Water purifier and working method of water purifier

Abstract

This invention relates to a water purifier and its operating method. The water purifier includes a first pipeline with one end as an inlet. The first pipeline is connected to the inlet of a membrane structure via a second pipeline. A pretreatment inlet switch is installed on the first pipeline. A booster pump and at least one first pretreatment filter element are installed on the second pipeline. The first outlet of the membrane structure is connected to a floor drain via a wastewater ratio solenoid valve. The second outlet of the membrane structure is connected to the floor drain via a third pipeline. The second outlet of the membrane structure is connected to one end of a first branch via a check valve. The other end of the first branch is connected to a second pipeline upstream of the booster pump. The outlet of the check valve is connected to a water storage container. The operating method of this invention effectively saves labor costs, avoids unnecessary expenditures, effectively solves the problem of stale water caused by various short holidays, and ensures the quality of water used by customers.

Description

Technical Field

[0001] This invention belongs to the field of water purifier technology, specifically relating to a water purifier and its working method. Background Technology

[0002] As people place increasing importance on healthy drinking water, water purifiers are being used more and more widely in homes and offices. However, many users are not fully aware of the importance of the protective solution in the reverse osmosis membrane during new installations and secondary filter replacements, or they may use incorrect operating methods. This could lead to a decrease in the filtration efficiency of the water purifier, or even harm to human health.

[0003] In addition, some after-sales technicians, when installing new machines or replacing filter cartridges for the second time, may not clean the filter cartridges thoroughly due to time constraints. This can lead to problems such as odors and foam in the water, causing significant communication costs for customers and dealers.

[0004] Therefore, there is a need for a water purifier that can overcome the shortcomings of existing technologies. Summary of the Invention

[0005] In order to solve all or some of the above problems, the present invention aims to provide a water purifier and a method for operating the water purifier. The method of the present invention effectively saves labor costs, avoids unnecessary expenditures, effectively solves the problem of water not being fresh due to various short holidays, and at the same time ensures the quality of water used by customers.

[0006] According to one aspect of the present invention, a water purifier is provided, comprising a first pipeline, one end of which is a water inlet, and the other end of which is connected to the water inlet of a membrane structure via a second pipeline. A pretreatment water inlet switch is provided on the first pipeline, and a booster pump and at least one first pretreatment filter element are provided on the second pipeline. The first outlet of the membrane structure is connected to a floor drain via a wastewater ratio solenoid valve. When the wastewater ratio solenoid valve is open, the flow rate of wastewater flowing into the floor drain through the wastewater ratio solenoid valve is greater than when the wastewater ratio solenoid valve is closed. The flow rate in the state; the second outlet of the membrane structure is connected to the floor drain through a third pipeline, and the third pipeline is equipped with a normally closed solenoid valve three and a check valve one. The second outlet of the membrane structure is connected to the inlet of the check valve two, and the outlet of the check valve two is connected to one end of the first branch. The first branch is equipped with a check valve three and a normally closed solenoid valve two. The other end of the first branch is connected to the second pipeline upstream of the booster pump. The outlet of the check valve two is connected to the water storage container. The inlets of the check valve one and the check valve three are both located near the second outlet of the membrane structure.

[0007] Furthermore, the pretreatment water inlet switch includes a normally closed solenoid valve and a low-pressure switch; the first pipeline is also equipped with a second pretreatment filter element and an inlet three-way valve; the membrane structure is a reverse osmosis membrane or a nanofiltration membrane.

[0008] Furthermore, the water storage container includes a first water storage container, and the outlet of the second check valve is connected to the first water storage container via a two-way solenoid valve; and / or, the water storage container includes a second water storage container, and the outlet of the second check valve is connected to the inlet of the second water storage container via a second branch, wherein a high-pressure switch and a normally open solenoid valve are provided on the second branch.

[0009] When the water storage container includes a first water storage container and a second water storage container, the inlet of the second water storage container and the first water storage container are connected by a normally closed solenoid valve.

[0010] Furthermore, a first flow meter is installed on the second pipeline between the connection point of the first branch and the second pipeline and the booster pump, or a first flow meter is installed on the second pipeline downstream of the booster pump.

[0011] This invention also provides a method for operating a water purifier, using the water purifier described above. The method includes a first flushing process, a second flushing process, an emptying process, a water production process, an power-on process, and a full-water process. Specifically:

[0012] When performing the first flushing process: the pretreatment water inlet switch is closed, the wastewater ratio solenoid valve and the normally closed solenoid valve three are energized and opened, the normally closed solenoid valve two is kept de-energized, the booster pump is started, and the water flow at the inlet end is discharged from the floor drain through the first and second outlets of the membrane structure.

[0013] When the second flushing process is executed: the pretreatment water inlet switch is closed, the normally closed solenoid valve three is energized and opened, the wastewater ratio solenoid valve and the normally closed solenoid valve two are de-energized, the booster pump is started, and the water flow at the inlet end is discharged from the floor drain through the first and second outlets of the membrane structure.

[0014] When the draining process is executed, the pretreatment water inlet switch is turned off, the normally closed solenoid valve three is de-energized, the normally closed solenoid valve two and the wastewater ratio solenoid valve are energized and opened, the booster pump is started, and the water in the storage container is discharged from the floor drain through the normally closed solenoid valve two and the wastewater ratio solenoid valve.

[0015] When the water production process is executed, the pretreatment water inlet switch is closed, the normally closed solenoid valves 2 and 3 and the wastewater ratio solenoid valve are de-energized, the normally closed solenoid valve 4 is energized and opened, the booster pump is started, the water at the inlet flows through the membrane structure to produce pure water, the pure water enters the water storage container through its second outlet, and the wastewater generated in the water production process is discharged from the floor drain through the wastewater ratio solenoid valve.

[0016] When the power-on process is executed, the pretreatment water inlet switch is closed, the wastewater ratio solenoid valve is energized and opened, the normally closed solenoid valves two and three are de-energized, and the booster pump starts.

[0017] When the full water process is executed, the pretreatment water inlet switch is closed, the booster pump is started, the wastewater ratio solenoid valve is energized and opened, and the normally closed solenoid valves three and two are de-energized, so the water purifier enters the full water standby state.

[0018] Furthermore, when the water storage container includes a first water storage container and a second water storage container, and the outlet of the second check valve is connected to the first water storage container via a two-way solenoid valve, and the outlet of the second check valve is connected to the inlet of the second water storage container via a second branch, the second branch being equipped with a high-pressure switch and a normally open solenoid valve, and the inlet of the second water storage container and the first water storage container being connected via a normally closed solenoid valve, the venting process includes a first venting process and a second venting process, specifically:

[0019] When the first evacuation process is executed, the pretreatment water inlet switch is disconnected, the normally closed solenoid valve 3, normally open solenoid valve, normally closed solenoid valve 4 and double-way solenoid valve are de-energized, the normally closed solenoid valve 2 and wastewater ratio solenoid valve are energized and opened, the booster pump is started, and the high-pressure water in the second water storage container is discharged from the floor drain through the high-pressure switch, normally open solenoid valve, normally closed solenoid valve 2 and wastewater ratio solenoid valve.

[0020] When the second venting process is executed, the pretreatment water inlet switch is turned off, and the states of the booster pump, normally closed solenoid valve 2, wastewater ratio solenoid valve, normally closed solenoid valve 3, normally open solenoid valve and normally closed solenoid valve 4 are the same as the states during the first venting process. The double-way solenoid valve is energized and opened, and the water in the water storage container is discharged from the floor drain through the double-way solenoid valve, normally closed solenoid valve 2 and wastewater ratio solenoid valve.

[0021] When the water production process is executed, the pretreatment inlet switch is closed, the normally closed solenoid valve 2, normally closed solenoid valve 3, normally open solenoid valve, double-way solenoid valve and wastewater ratio solenoid valve are de-energized, the normally closed solenoid valve 4 is energized and opened, the booster pump is started, and the water at the inlet end is purified after passing through the membrane structure. The purified water enters the first water storage container through its second outlet, high-pressure switch, normally open solenoid valve and normally closed solenoid valve 4. After the liquid level in the first water storage container reaches the set liquid level, the normally closed solenoid valve 4 is de-energized, and the purified water switches to enter the second water storage container. The wastewater generated in the water production process is discharged from the floor drain through the wastewater ratio solenoid valve.

[0022] Furthermore: When performing the first and second flushing processes: the normally open solenoid valve is energized and opened, while the normally closed solenoid valve four and the double-way solenoid valve remain de-energized; when performing the power-on process, the normally open solenoid valve and the double-way solenoid valve are de-energized, and the state of the normally closed solenoid valve four is determined by the liquid level in the water storage container; when performing the full water process, the double-way solenoid valve, the normally open solenoid valve, and the normally closed solenoid valve four are de-energized.

[0023] Furthermore, for membrane structures used for the first time, the working method includes:

[0024] The first rinsing process is executed within a first preset time period;

[0025] After the first rinsing process is completed, the second rinsing process is executed, and the execution time of the second rinsing process is a second preset time.

[0026] After the second flushing process is completed, the first evacuation process is executed, and the execution time of the first evacuation process is a third preset time.

[0027] After the first evacuation process is completed, the water production process is executed until the second water storage container is full and the high-pressure switch trips.

[0028] After the water purification process is completed, the full water process is executed, and the water purifier enters the full water standby state.

[0029] Furthermore, for situations where the interval between two water treatment processes is greater than a set time, or where the water quality does not meet requirements, the working method includes:

[0030] During a fourth preset time period, the first venting process is executed; and / or, during a fifth preset time period, the second venting process is executed;

[0031] The water production process continues until the second water storage container is full and the high-pressure switch trips.

[0032] After the water purification process is completed, the full water process is executed, and the water purifier enters the full water standby state.

[0033] Furthermore, for a water purifier in use, the operating method includes:

[0034] After the device is powered on again, the power-on procedure is executed.

[0035] After the power-on process is completed, the water production process continues until the second water storage container is full and the high-pressure switch trips.

[0036] After the water purification process is completed, the full water process is executed, and the water purifier enters the full water standby state.

[0037] Furthermore, the method also includes a third rinsing process, specifically,

[0038] When the third flushing process is executed, the pretreatment water inlet switch is opened, the wastewater ratio solenoid valve is energized and opened, the normally closed solenoid valves 2, 3, 4, and 5 are de-energized, the booster pump is started, and the state of the normally closed solenoid valve 4 is determined by the liquid level in the first water storage container.

[0039] During the water production process, the third flushing process is performed, and the execution time of the third flushing process is a sixth preset time.

[0040] Furthermore, the working method also includes a cyclic process, in which the cyclic process is executed if no water is used within a set time while the water purifier is in a full water standby state;

[0041] When the cycle process is executed, the pretreatment water inlet switch is closed, the wastewater ratio solenoid valve is energized and opened, the normally closed solenoid valves 2, 4, 3, 3, 4, and 5 are de-energized, the booster pump is started, and the water at the inlet end is discharged from the floor drain through the first outlet of the membrane structure.

[0042] After the cycle is completed, the water purifier enters a full-water standby state again;

[0043] The execution time of the cyclic process is the seventh preset time.

[0044] Furthermore, a first flow meter is installed on the second pipeline between the connection point of the first branch and the second pipeline and the booster pump, or a first flow meter is installed on the second pipeline downstream of the booster pump. The first flow meter is used to detect the flow rate of water flowing through the second pipeline.

[0045] Furthermore, for membrane structures used for the first time, the working method includes:

[0046] The first flushing process is executed, and the execution time of the first flushing process is determined by the water flow through the first flow meter and the corresponding first preset volume.

[0047] After the first rinsing process is completed, the second rinsing process is executed. The execution time of the second rinsing process is determined by the water flow through the first flow meter and the corresponding second preset volume.

[0048] After the second flushing process is completed, the first evacuation process is executed. The execution time of the first evacuation process is determined by the water flow through the first flow meter and the corresponding third preset volume.

[0049] After the first evacuation process is completed, the water production process is executed until the second water storage container is full and the high-pressure switch trips.

[0050] After the water purification process is completed, the full water process is executed, and the water purifier enters the full water standby state.

[0051] Furthermore, for situations where the interval between two water treatment processes is greater than a set time, or where the water quality does not meet requirements, the working method includes:

[0052] The first evacuation process is executed, the execution time of which is determined by the water flow through the first flow meter and the corresponding fourth preset volume; and / or, the second evacuation process is executed, the execution time of which is determined by the water flow through the first flow meter and the corresponding fifth preset volume.

[0053] The water production process continues until the second water storage container is full and the high-pressure switch trips.

[0054] After the water purification process is completed, the full water process is executed, and the water purifier enters the full water standby state.

[0055] Furthermore, for a water purifier in use, the operating method includes:

[0056] After the device is powered on again, the power-on procedure is executed.

[0057] After the power-on process is completed, the water production process is executed until the second water storage container is full and the high-pressure switch trips.

[0058] After the water purification process is completed, the full water process is executed, and the water purifier enters the full water standby state.

[0059] Furthermore, the method also includes a third rinsing process, specifically,

[0060] When the third flushing process is executed, the pretreatment water inlet switch is opened, the wastewater ratio solenoid valve is energized and opened, the normally closed solenoid valves 2, 3, 4, and 5 are de-energized, the booster pump is started, and the state of the normally closed solenoid valve 4 is determined by the liquid level in the first water storage container.

[0061] During the water production process, the third flushing process is performed, and the execution time of the third flushing process is determined by the water flow through the first flow meter and the corresponding sixth preset volume.

[0062] Furthermore, the working method also includes a cyclic process, in which the cyclic process is executed if no water is used within a set time while the water purifier is in a full water standby state;

[0063] When the cycle process is executed, the pretreatment water inlet switch is closed, the wastewater ratio solenoid valve is opened, the normally closed solenoid valves 2, 4, 3, 4, 5, and 6 are closed, the booster pump is started, and the water at the inlet end is discharged from the floor drain through the first outlet of the membrane structure.

[0064] After the cycle is completed, the water purifier enters a full-water standby state again;

[0065] The execution time of the cyclic process is determined by the water flow through the first flow meter and the corresponding seventh preset volume.

[0066] As can be seen from the above technical solution, the water purifier and its working method provided by the present invention have the following beneficial effects:

[0067] The working method of the present invention can realize intelligent flushing of reverse osmosis or nanofiltration membranes; at the same time, the embodiments of the present invention can more intelligently complete the emptying, including the emptying of the second water storage container and the emptying of the first water storage container; therefore, the working method of the embodiments of the present invention effectively saves labor costs and avoids unnecessary expenditures.

[0068] The working method of this invention enables the emptying function after holidays or water pollution, effectively solving the problem of stale water caused by various short holidays, while ensuring the quality of water used by customers. Attached Figure Description

[0069] Figure 1 This is a schematic diagram of a time-type water purifier according to an embodiment of the present invention. Figure 1 Two first pretreatment filter elements are installed in the middle. According to the flow direction of water during water production, the booster pump is located upstream of the two first pretreatment filter elements, and the pipeline where the normally closed solenoid valve two is located is connected to the upstream of the booster pump.

[0070] Figure 2 This is a schematic diagram of a time-type water purifier according to an embodiment of the present invention. Figure 2 Two first pretreatment filter elements are set up in the middle. According to the flow direction of water during water production, the booster pump is located between the two first pretreatment filter elements, and the pipeline where the normally closed solenoid valve two is located is connected to the upstream of the first pretreatment filter element in the middle of the two first pretreatment filter elements.

[0071] Figure 3 This is a schematic diagram of a time-type water purifier according to an embodiment of the present invention. Figure 3 Two first pretreatment filter elements are set in the middle. According to the flow direction of water during water production, the booster pump is located between the two first pretreatment filter elements, and the pipeline where the normally closed solenoid valve 2 is located is connected to the booster pump and the first pretreatment filter element upstream of it.

[0072] Figure 4 This is a schematic diagram of a time-type water purifier according to an embodiment of the present invention. Figure 4 Two first pretreatment filter elements are installed in the middle. According to the flow direction of water during water production, the booster pump is located downstream of the two first pretreatment filter elements, and the pipeline where the normally closed solenoid valve two is located is connected between the two first pretreatment filter elements.

[0073] Figure 5 This is a schematic diagram of a time-type water purifier according to an embodiment of the present invention. Figure 5 Two first pretreatment filter cartridges are installed in the middle. According to the flow direction of water during water production, the booster pump is located downstream of the two first pretreatment filter cartridges, and the pipeline where the normally closed solenoid valve 2 is located is connected between the booster pump and the first pretreatment filter cartridge upstream of it.

[0074] Figure 6 This is a schematic diagram of a flow-type water purifier according to an embodiment of the present invention. Figure 6 Two first pretreatment filter elements are set up. According to the flow direction of water during water production, the booster pump is located upstream of the two first pretreatment filter elements. The first flow meter is set upstream of the booster pump, and the pipeline where the normally closed solenoid valve two is located is connected to the upstream of the first flow meter.

[0075] Figure 7 This is a schematic diagram of a flow-type water purifier according to an embodiment of the present invention. Figure 7 Two first pretreatment filter elements are set up. According to the flow direction of water during water production, the booster pump is located between the two first pretreatment filter elements. The first flow meter is set upstream of the upstream first pretreatment filter element among the two first pretreatment filter elements, and the pipeline where the normally closed solenoid valve two is located is connected to the upstream of the first flow meter.

[0076] Figure 8 This is a schematic diagram of a flow-type water purifier according to an embodiment of the present invention. Figure 8 Two first pretreatment filter elements are set in the middle. According to the flow direction of water during water production, the booster pump is located between the two first pretreatment filter elements. The first flow meter is set between the booster pump and the first pretreatment filter element upstream of it. The pipeline where the normally closed solenoid valve two is located is connected to the upstream of the first pretreatment filter element upstream of the first flow meter.

[0077] Figure 9 This is a schematic diagram of a flow-type water purifier according to an embodiment of the present invention. Figure 9 Two first pretreatment filter elements are set up in the middle. According to the flow direction of water during water production, the booster pump is located between the two first pretreatment filter elements. The first flow meter is set between the booster pump and the first pretreatment filter element upstream of it. The pipeline where the normally closed solenoid valve two is located is connected between the first flow meter and the first pretreatment filter element upstream of it.

[0078] Figure 10 This is a schematic diagram of a flow-type water purifier according to an embodiment of the present invention. Figure 10Two first pretreatment filter elements are set up in the middle. According to the flow direction of water during water production, the booster pump is located downstream of the two first pretreatment filter elements. The first flow meter is set between the two first pretreatment filter elements, and the pipeline where the normally closed solenoid valve two is located is connected to the first flow meter and the first pretreatment filter element upstream of it.

[0079] Figure 11 This is a schematic diagram of a flow-type water purifier according to an embodiment of the present invention. Figure 11 Two first pretreatment filter elements are set up in the middle. According to the flow direction of water during water production, the booster pump is located downstream of the two first pretreatment filter elements. The first flow meter is set between the booster pump and the first pretreatment filter element upstream of it, and the pipeline where the normally closed solenoid valve two is located is connected between the two first pretreatment filter elements.

[0080] Figure 12 This is a schematic diagram of a flow-type water purifier according to an embodiment of the present invention. Figure 12 Two first pretreatment filter cartridges are set up. According to the flow direction of water during water production, the booster pump is located downstream of the two first pretreatment filter cartridges. The first flow meter is set between the booster pump and the first pretreatment filter cartridge upstream of it. The pipeline where the normally closed solenoid valve 2 is located is connected between the first flow meter and the first pretreatment filter cartridge upstream of it.

[0081] Figure 13 A schematic diagram showing the water flow during the first and second rinsing processes of a water purifier;

[0082] Figure 14 A schematic diagram showing the water flow during the first draining process of a water purifier;

[0083] Figure 15 A schematic diagram showing the water flow during the second draining process of the water purifier;

[0084] Figure 16 A schematic diagram illustrating the water flow during the water purification process of a water purifier;

[0085] Figure 17 A schematic diagram illustrating the water flow during the power-on, third flush, and circulation processes of the water purifier. Detailed Implementation

[0086] To better understand the purpose, structure, and function of this invention, the following detailed description of a water purifier and its working method, in conjunction with the accompanying drawings, is provided.

[0087] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0088] All components involved in the embodiments of this invention can be replaced with components with similar functions in the industry, and by changing the different positions of the components in the water channel, similar results can be produced; therefore, based on this structure, related products invented by changing components or changing the different positions of the components in the water channel are all protected.

[0089] like Figure 1 As shown, a water purifier according to an embodiment of the present invention is illustrated, which includes a first pipeline, one end of which is a water inlet, and the other end of which is connected to the water inlet of a membrane structure 11 through a second pipeline. A pretreatment water inlet switch 01 is provided on the first pipeline, and a booster pump 6 and at least one first pretreatment filter element 9 are provided on the second pipeline.

[0090] The first pretreatment filter element is used to pretreat the water flowing through it. In practice, it can be set to at least one, such as two or three, as needed. Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 There are two first pretreatment filter elements in each system. When more than one first pretreatment filter element is used, its position relative to the booster pump 6 can be adjusted arbitrarily, for example: Figure 1 The booster pump 6 is located upstream of the two first pretreatment filter elements. Figure 2 and Figure 3 The booster pump 6 is located between the two first pretreatment filter elements. Figure 4 and Figure 5 The booster pump 6 is located downstream of the two first pretreatment filter elements. For both the booster pump 6 and the first pretreatment filter elements, the overall requirement is that both the first pretreatment filter elements and the booster pump 6 are on the second pipeline.

[0091] The membrane structure in this embodiment is a reverse osmosis membrane or a nanofiltration membrane.

[0092] The first outlet of the membrane structure 11 is connected to the floor drain 13 through the wastewater ratio solenoid valve 12. When the wastewater ratio solenoid valve is in the open state, the flow rate of wastewater flowing into the floor drain 13 through the wastewater ratio solenoid valve is greater than the flow rate when the wastewater ratio solenoid valve is in the closed state. The second outlet of the membrane structure is connected to the floor drain 13 through the third pipeline. The third pipeline is equipped with a normally closed solenoid valve 16 and a check valve 17. The inlet of the check valve 17 is located close to the second outlet of the membrane structure.

[0093] Regarding the wastewater ratio solenoid valve 12, when it is in the open state, the flow rate of wastewater flowing into the floor drain through the wastewater ratio solenoid valve is greater than the corresponding flow rate when it is in the closed state, thus it can be used to pressurize the membrane structure. In this embodiment, the check valve 17 is set to allow the water to flow in one direction on the third pipeline.

[0094] The second outlet of the membrane structure is connected to the inlet of check valve 2 15. The outlet of check valve 2 15 is connected to one end of the first branch. Check valve 3 7 and normally closed solenoid valve 2 8 are installed on the first branch. The other end of the first branch is connected to the second pipeline upstream of the booster pump 6. The outlet of check valve 2 15 is connected to the water storage container. The inlets of check valve 1 17 and check valve 3 7 are both located near the second outlet of the membrane structure.

[0095] In practice, a second flow meter 14 can be set up as needed to monitor the water flow. One end of the second flow meter 14 is connected to the outlet of the check valve 15, and the other end of the second flow meter 14 is connected to one end of the first branch.

[0096] The water storage container includes a first water storage container 21, and the outlet of the second check valve 15 is connected to the first water storage container 21 through a double-way solenoid valve 10; and / or, the water storage container includes a second water storage container 20, and the outlet of the second check valve 15 is connected to the inlet of the second water storage container 20 through a second branch, and a high-pressure switch 18 and a normally open solenoid valve 19 are provided on the second branch.

[0097] When the water storage container includes a first water storage container 21 and a second water storage container 20, the inlet of the second water storage container 20 and the first water storage container 21 are connected by a normally closed solenoid valve 22.

[0098] Regarding the first water storage container in this embodiment, its outlet can be connected to an outlet pipe as needed. When cold and hot water are required, the outlet can be connected to the hot water outlet pipe and the cold water outlet pipe respectively. For example, the outlet of the first water storage container can be connected to one end of a tee, and the other two ends of the tee can be connected to the hot water outlet pipe and the cold water outlet pipe respectively. The hot water outlet pipe and the cold water outlet pipe are respectively equipped with corresponding outlet solenoid valves. At the same time, a heating device is installed on the hot water outlet pipe to heat the water to make it hot water. The heating device is, for example, a hot water tank. As an alternative, the tee can be replaced with a four-way valve. After replacing the tee with the four-way valve, the extra end is connected to the pipeline between the two-way solenoid valve 10 and the first water storage container 21. Finally, sterilization devices such as ultraviolet germicidal lamps and EDOG sterilizers can be installed as needed on the pipeline connecting the first water storage container, the four-way valve, and the pipeline between the two-way solenoid valve 10 and the first water storage container 21.

[0099] In this embodiment, the booster pump 6 is used to provide power for the water flow. At the intersection of the first branch and the second pipeline, it is sufficient that the other end of the first branch is connected to the second pipeline upstream of the booster pump 6. Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown.

[0100] In this embodiment, check valve 2 15 and check valve 3 7 are used to achieve unidirectional flow of water in the corresponding pipeline and prevent backflow of water.

[0101] The pretreatment inlet switch 01 includes a normally closed solenoid valve 4; a second pretreatment filter element 3 is also installed on the first pipeline, located upstream of the normally closed solenoid valve 4, and a low-pressure switch 2 is located upstream of the second pretreatment filter element 3. The second pretreatment filter element 3 is used to filter sediment and other impurities from the tap water, thus protecting the normally closed solenoid valve 4 downstream of it.

[0102] One end of the first pipeline is connected to the first end of the inlet three-way valve 1, the second end of the inlet three-way valve is connected to the tap water inlet, and the third end of the inlet three-way valve is connected to the tap water outlet.

[0103] The inlet three-way valve 1 has its first end connected to the tap water inlet and its second end connected to the first pipeline. Through the connection of the first and second ends of the inlet three-way valve 1, water can flow into the first pipeline. Its third end is used to connect to the tap water outlet faucet. Through the connection of the first and third ends of the inlet three-way valve 1, tap water can be released through the tap water outlet faucet.

[0104] The membrane structure 11 in this embodiment of the invention is a reverse osmosis membrane or a nanofiltration membrane.

[0105] The water purifier described in this embodiment is a time-based water purifier, meaning that its water production and rinsing processes are controlled by a preset time. As an alternative, it can also be set to a flow-based purifier, meaning that its water production and rinsing processes are controlled by a preset water volume and flow rate.

[0106] For flow-type water purifiers, a first flow meter 5 is installed on the second pipeline between the connection point of the first branch and the second pipeline and the inlet of the booster pump 6. Alternatively, the first flow meter 5 can be installed on the second pipeline downstream of the booster pump 6. The first flow meter 5 is used to detect the flow rate of water flowing through the second pipeline. By combining the flow rate detected by the first flow meter with the corresponding preset water volume, the corresponding time for the flow-type water purifier to execute each process can be obtained.

[0107] For flow-type water purifiers, the following explanation is provided again: Considering the changes in the positions of the booster pump 6 and the first pretreatment filter element, the connection point between the first branch and the second pipeline is also... Figure 6 Regarding the change in position A, in specific implementation, the flow-type water purifier in this embodiment can be as follows: Figures 6-12 Multiple structures. Targeting Figures 6-12 : Figure 6 The booster pump is located upstream of the two first pretreatment filter elements, and the first flow meter 5 is located between point A and the inlet of the booster pump; Figure 7 In the middle, the booster pump is between the two first pretreatment filter elements, and the first flow meter 5 is between point A and the upstream first pretreatment filter element; Figure 8 In the middle, the booster pump is located between the two first pretreatment filter elements, and the first flow meter 5 is located between the upstream first pretreatment filter element and the booster pump; Figure 9 In the middle, the booster pump is located between the two first pretreatment filter elements, and the first flow meter 5 is located between point A and the inlet of the booster pump; Figure 10 In the middle, the booster pump is downstream of the two first pretreatment filter elements, and the first flow meter 5 is between point A and the downstream first pretreatment filter element; Figure 11 In the middle, the booster pump is downstream of the two first pretreatment filter elements, point A is between the two first pretreatment filter elements, and the first flow meter 5 is between the downstream first pretreatment filter element and the booster pump. Figure 12 In this configuration, the booster pump is located downstream of the two first pretreatment filter cartridges, and the first flow meter 5 is located between point A and the inlet of the booster pump. It should be noted that: Figures 6-12 All of these structures are within the protection scope of the embodiments of the present invention.

[0108] This invention also provides a method for operating a water purifier, wherein the water purifier is as described above. Figures 6-12 Corresponding flow-type water purifiers or Figures 1-5 The corresponding time-based water purifier, specifically, operates through a process including a first flushing cycle, a second flushing cycle, an emptying cycle, a water production cycle, a power-on cycle, and a full-water cycle. The details of each cycle are explained below:

[0109] When performing the first flushing process: the pretreatment water inlet switch 01 is closed to allow water to flow through the inlet end, the wastewater ratio solenoid valve 12 and the normally closed solenoid valve 16 are energized and opened, allowing water to flow through, the normally closed solenoid valve 8 is kept de-energized to prevent water from flowing through, and the booster pump 6 is started to pump water.

[0110] For the first rinsing process, such as Figure 13As shown, after the booster pump 6 starts, the water flow from the inlet passes through the pretreatment inlet switch 01, the booster pump 6, and the first pretreatment filter element before entering the membrane structure. The water flowing into the membrane structure is used to rinse the membrane structure containing the protective fluid. Finally, part of the wastewater is discharged from its first outlet through the wastewater ratio solenoid valve 12 and then through the floor drain, while the other part is discharged through the normally closed solenoid valve 16 and the check valve 17. The normally closed solenoid valve 8 is designed to prevent water from contaminating other pipelines.

[0111] When executing the second flushing process: the pretreatment water inlet switch 01 is closed to allow water to flow through the inlet end, the normally closed solenoid valve 16 is energized and opened, and water is allowed to flow through after the normally closed solenoid valve 16 is energized and opened, and water is not allowed to flow through after it is energized and opened. The wastewater ratio solenoid valve 12 and the normally closed solenoid valve 8 are de-energized. After the wastewater ratio solenoid valve 12 is de-energized, the flow rate of the water flowing into the floor drain through it is reduced, and the booster pump 6 is started to pump water.

[0112] For the second rinsing process, such as Figure 13 As shown, after the booster pump 6 starts, the water flow from the inlet passes through the pretreatment inlet switch 01, the booster pump 6, and the first pretreatment filter element before entering the membrane structure. The water flowing into the membrane structure is used to rinse the membrane structure containing the protective fluid. Finally, part of the wastewater is discharged from its first outlet through the wastewater ratio solenoid valve 12 and then through the floor drain, while the other part is discharged through the normally closed solenoid valve 16 and the check valve 17. Furthermore, because the wastewater ratio solenoid valve 12 is de-energized, it further pressurizes the membrane structure, thereby further washing away the protective fluid. The normally closed solenoid valve 8 is designed to prevent water contamination of other pipelines.

[0113] When the draining process is executed, the pretreatment water inlet switch 01 is disconnected, the normally closed solenoid valve 3 16 is de-energized, the normally closed solenoid valve 2 8 and the wastewater ratio solenoid valve 12 are energized and opened, the booster pump 6 is started, and the water in the water storage container is discharged from the floor drain through the normally closed solenoid valve 2 8 and the wastewater ratio solenoid valve 12.

[0114] When the water production process is executed, the pretreatment inlet switch 01 is closed to allow water to flow through the inlet. The normally closed solenoid valve 8 and normally closed solenoid valve 16 are de-energized to prevent water from flowing through the corresponding solenoid valves. The wastewater ratio solenoid valve 12 is de-energized to reduce the flow rate of the water passing through it. The booster pump is started to pump the water from the inlet to the membrane structure.

[0115] When the power-on process is executed, the pretreatment water inlet switch 01 is closed to allow water to flow through the inlet, the wastewater ratio solenoid valve 12 is energized and opened, the normally closed solenoid valve 2 8 and normally closed solenoid valve 3 16 are de-energized, and the booster pump 6 is started.

[0116] During the power-on process, such as Figure 17As shown, the water flow at the inlet end enters the membrane structure through the pretreatment inlet switch 01, the booster pump and the first pretreatment filter element 9 to flush the membrane structure. The wastewater generated during flushing flows into the floor drain through the wastewater ratio solenoid valve 12.

[0117] When the full water process is executed, the pretreatment water inlet switch 01 is closed to allow water to flow through the inlet, the booster pump 6 is started, the wastewater ratio solenoid valve 12 is energized and opened, the normally closed solenoid valve 3 16 and the normally closed solenoid valve 2 8 are de-energized, and the water purifier enters the full water standby state.

[0118] For each of the aforementioned processes, the state changes of the pretreatment water inlet switch 01 are involved. The pretreatment water inlet switch 01 is explained as follows: In this embodiment, when the pretreatment water inlet switch is closed, the water flow at the inlet end can enter the inlet of the booster pump through the pretreatment water inlet switch. When the pretreatment water inlet switch is open, the water flow at the inlet end cannot enter the inlet of the booster pump through it. For both flow-type and time-type water purifiers, the pretreatment water inlet switch includes a normally closed solenoid valve and a low-pressure switch. The low-pressure switch closes when the tap water pressure is greater than 0.1 MPa, allowing water flow. The normally closed solenoid valve opens when energized, allowing water flow. Therefore, closing the pretreatment water inlet switch means the low-pressure switch is closed and the normally closed solenoid valve is energized; opening the pretreatment water inlet switch means the low-pressure switch is closed and the normally closed solenoid valve is de-energized.

[0119] Furthermore, regarding the case where the water storage containers include a first water storage container 21 and a second water storage container 20, and the outlet of the second check valve 15 is connected to the first water storage container 21 via a double-way solenoid valve 10, and the outlet of the second check valve 15 is connected to the inlet of the second water storage container 20 via a second branch, the second branch being equipped with a high-pressure switch 18 and a normally open solenoid valve 19, and the inlet of the second water storage container 20 and the first water storage container 21 are connected via a normally closed solenoid valve 22, the venting process includes a first venting process and a second venting process, specifically:

[0120] When the first evacuation process is executed, the pretreatment water inlet switch 01 is disconnected, preventing water from entering the inlet. The normally closed solenoid valve 16, normally open solenoid valve 19, normally closed solenoid valve 22 and double-way solenoid valve 10 are de-energized. The normally open solenoid valve 19 is de-energized, allowing water to flow through. The normally closed solenoid valve 8 and wastewater ratio solenoid valve 12 are energized and opened, allowing water to flow through. The booster pump 6 is started to pump water.

[0121] In the first evacuation process, such as Figure 14As shown, high-pressure water in the second water storage container is discharged from the floor drain through a high-pressure switch 18, a normally open solenoid valve 19, a normally closed solenoid valve 8, and a wastewater ratio solenoid valve 12. During this process, the state of the high-pressure switch is determined by the water pressure in the second water storage container. This process is used to discharge water from the second water storage container through a membrane structure. The normally closed solenoid valve 22 and the double-way solenoid valve 10 are de-energized during this process, preventing water flow and thus avoiding the problem of water from the second water storage container entering the first water storage container.

[0122] When the second venting process is executed, the pretreatment water inlet switch 01 is disconnected, preventing water from entering the inlet. The states of booster pump 6, normally closed solenoid valve 2 8, wastewater ratio solenoid valve 12, normally closed solenoid valve 3 16, normally open solenoid valve 19, and normally closed solenoid valve 4 22 are the same as those during the first venting process. The double-pass solenoid valve 10 is energized and opened.

[0123] In the second venting process, such as Figure 15 As shown, the water in the first water storage container is discharged from the floor drain through the double-pass solenoid valve 10, the normally closed solenoid valve 8 and the wastewater ratio solenoid valve 12; this process is used to discharge the water in the first water storage container through the membrane structure, mainly for situations where the water quality in the first water storage container is substandard.

[0124] When the water production process is executed, the pretreatment inlet switch 01 is closed, the normally closed solenoid valve 2 8, normally closed solenoid valve 3 16, normally open solenoid valve 19, double-way solenoid valve 10 and wastewater ratio solenoid valve 12 are de-energized, the normally closed solenoid valve 4 22 is energized and opened, the booster pump 6 is started, and the water at the inlet end is purified after passing through the membrane structure. The purified water enters the first water storage container 21 through its second outlet, high pressure switch 18, normally open solenoid valve 19 and normally closed solenoid valve 4 22. After the liquid level in the first water storage container 21 reaches the set liquid level, the normally closed solenoid valve 4 22 is de-energized, and the purified water switches to enter the second water storage container 20. The wastewater generated in the water production process is discharged from the floor drain through the wastewater ratio solenoid valve 12.

[0125] Furthermore: When performing the first and second flushing processes: the normally open solenoid valve 19 is energized and opened, while the normally closed solenoid valve 22 and the double-way solenoid valve 10 remain de-energized; when performing the power-on process, the normally open solenoid valve 19 and the double-way solenoid valve 10 are de-energized, and the state of the normally closed solenoid valve 22 is determined by the liquid level in the water storage container; when performing the full water process, the double-way solenoid valve 10, the normally open solenoid valve 19, and the normally closed solenoid valve 22 are de-energized.

[0126] Regarding the aforementioned processes of the water purifier, embodiments of the present invention also disclose a method for operating a time-type water purifier for the first use of a membrane structure, the method comprising:

[0127] Step D1: Execute the first rinsing process within the first preset time period;

[0128] Step D2: After the first rinsing process is completed, the second rinsing process is executed. The execution time of the second rinsing process is the second preset time.

[0129] Step D3: After the second flushing process is completed, the first evacuation process is executed. The execution time of the first evacuation process is the third preset time.

[0130] Step D4: After the first purging process is completed, execute the water production process until the second water storage container is full and the high-pressure switch 18 trips.

[0131] Step D5: After the water purification process is completed, the full water process is executed, and the water purifier enters the full water standby state.

[0132] In the event of a power outage or water outage (low-pressure switch disconnection) during the membrane washing process, the method will be interrupted. When power or water is restored (low-pressure switch is closed), the membrane washing procedure will continue the previous steps or restart from step D1 to ensure the effectiveness of membrane washing.

[0133] For the membrane structure used for the first time, the working method of the time-type water purifier in this embodiment of the invention includes a first flushing process, a second flushing process, a first draining process, a water production process, and a full water process. The first flushing process is used to flush the membrane structure; the second flushing process is used to further flush the membrane structure by reducing the flow rate of wastewater flowing out of the first outlet; and the first draining process is used to drain the water in the second water storage container and utilize the water in the second water storage container to further flush the membrane structure. For the membrane structure used for the first time, the states of each solenoid valve are shown in Table 1 below. In Table 1, the state of the normally closed solenoid valve in the water production process is: after being energized, it is controlled by the liquid level in the first water storage container.

[0134] Table 1: Status of each solenoid valve for membrane structures used for the first time.

[0135]

[0136] For situations where the interval between two water purification processes is greater than the set time, i.e., during holidays, or when the water quality does not meet requirements, such as when water pollution is detected, the working method of a time-based water purifier includes:

[0137] Step E1: Execute the first purging process within the fourth preset time period; and / or, execute the second purging process within the fifth preset time period;

[0138] Step E2: Execute the water production process until the second water storage container is full and the high-pressure switch 18 trips;

[0139] Step E3: After the water purification process is completed, the full water process is executed, and the water purifier enters the full water standby state.

[0140] In this embodiment, under holiday mode or when water quality is substandard, the water purifier operates through a first evacuation process and / or a second evacuation process, a water production process, and a full water process. The first evacuation process empties the water from the second water storage container, the second evacuation process empties the water from the first water storage container, and the water production process produces water for both the empty second and first water storage containers. Under holiday mode or when water quality is substandard, the states of each solenoid valve are as shown in Table 2. In Table 2, the state of the normally closed solenoid valve four in the water production process is: energized and controlled by the liquid level in the first water storage container before de-energization.

[0141] Table 2: Status table of each solenoid valve for holiday mode or situations where water quality does not meet standards.

[0142]

[0143] For time-based water purifiers in use, the aforementioned working method includes:

[0144] Step F1: After the device is powered on again, execute the power-on procedure;

[0145] Step F2: After the power-on process is completed, the water production process continues until the second water storage container is full and the high-pressure switch 18 trips.

[0146] Step F3: After the water purification process is completed, the full water process is executed, and the water purifier enters the full water standby state.

[0147] For time-type water purifiers, the working method of this invention embodiment further includes a third rinsing process, specifically:

[0148] When performing the third flushing procedure, such as Figure 17 As shown, when the pretreatment water inlet switch 01 is closed, water can flow through the inlet end. The wastewater ratio solenoid valve 12 is energized and opened. The normally closed solenoid valve 8, normally closed solenoid valve 3 16, normally open solenoid valve 19 and double-way solenoid valve 10 are de-energized. The booster pump 6 is started. The state of the normally closed solenoid valve 4 22 is determined by the liquid level in the first water storage container.

[0149] The third flushing process is used for routine flushing of the membrane structure. Specifically, in the third flushing process, the water flow from the inlet end enters the membrane structure through the pretreatment inlet switch 01, the booster pump, and the first pretreatment filter element 9 to flush the membrane structure. The wastewater generated during flushing flows into the floor drain through the wastewater ratio solenoid valve 12. During this process, the state of the normally closed solenoid valve 22 is determined by the liquid level in the first water storage container.

[0150] During the water production process, the third flushing process is executed, and the execution time of the third flushing process is the sixth preset time.

[0151] For time-based water purifiers, the working method of this embodiment of the invention further includes a circulation process; specifically, during the period when the water purifier is in a full water standby state, if no water is used within a set time and the water purifier does not enter the water production state, then the circulation process is executed.

[0152] When the cycle process is executed, the pretreatment water inlet switch 01 is closed to allow water to flow through the inlet end, the wastewater ratio solenoid valve 12 is energized and opened, the normally closed solenoid valve 28, normally closed solenoid valve 42, normally closed solenoid valve 316, normally open solenoid valve 19 and double-way solenoid valve 10 are de-energized, and the booster pump 6 is started.

[0153] In a cyclical process, such as Figure 17 As shown, the water flow at the inlet end is discharged from the floor drain through the first outlet of the membrane structure and the wastewater ratio solenoid valve 12;

[0154] After the circulation process is completed, the water purifier enters a full-water standby state again.

[0155] The execution time of the loop process is the seventh preset time.

[0156] In practice, if no water is used for 24 hours, meaning the water purifier has not entered the water production process for 24 hours, then a circulation process will be executed. The circulation process will last for the seventh preset time. After the circulation process is completed, the water purifier will enter the full water standby state again.

[0157] All of the aforementioned processes involve time-type water purifiers. As can be seen from the foregoing, the embodiments of the present invention also include a flow-type water purifier. That is, a first flow meter 5 is provided on the second pipeline between the connection of the first branch and the second pipeline of the water purifier of the present invention and the booster pump 6, or a first flow meter 5 is provided on the second pipeline downstream of the booster pump 6. The first flow meter is used to detect the flow rate of water flowing through the second pipeline.

[0158] For a flow-type water purifier equipped with a first flow meter 5, the operating method for the membrane structure used for the first time includes:

[0159] Step A1: Execute the first flushing process. The execution time of the first flushing process is determined by the water flow through the first flow meter and the corresponding first preset volume.

[0160] Step A2: After the first flushing process is completed, the second flushing process is executed. The execution time of the second flushing process is determined by the water flow through the first flow meter and the corresponding second preset volume.

[0161] Step A3: After the second flushing process is completed, the first evacuation process is executed. The execution time of the first evacuation process is determined by the water flow through the first flow meter and the corresponding third preset volume.

[0162] Step A4: After the first purging process is completed, execute the water production process until the second water storage container is full and the high-pressure switch 18 trips.

[0163] Step A5: After the water purification process is completed, the full water process is executed, and the water purifier enters the full water standby state.

[0164] For a membrane structure used for the first time, the working method of the flow-type water purifier in this embodiment of the invention includes a first flushing process, a second flushing process, a first draining process, a water production process, and a full water process. The first flushing process is used to flush the membrane structure; the second flushing process is used to further flush the membrane structure by reducing the flow rate of wastewater flowing out of the first outlet; and the first draining process is used to drain the water in the second water storage container and use the water in the second water storage container to further flush the membrane structure.

[0165] For situations where the interval between two water purification processes is greater than a set time, or where the water quality does not meet requirements, the operating method of the flow-type water purifier in this embodiment of the invention includes:

[0166] Step B1: Execute the first evacuation process, the execution time of which is determined by the water flow through the first flow meter and the corresponding fourth preset volume; and / or, execute the second evacuation process, the execution time of which is determined by the water flow through the first flow meter and the corresponding fifth preset volume.

[0167] Step B2: Execute the water production process until the second water storage container is full and the high-pressure switch 18 trips;

[0168] Step B3: After the water purification process is completed, the full water process is executed, and the water purifier enters the full water standby state.

[0169] In this embodiment, under holiday mode or when the water quality is substandard, the water purifier operates in the following ways: a first drain process and / or a second drain process, a water production process, and a full water process. The first drain process is used to drain the water in the second water storage container, the second drain process is used to drain the water in the first water storage container, the water production process is used to produce water for the empty second water storage container and the first water storage container, and after water production, it enters the full water process.

[0170] For water purifiers in use, the operating method of the flow-type water purifier in this embodiment of the invention includes:

[0171] Step C1: After the device is powered on again, execute the power-on procedure;

[0172] Step C2: After the power-on process is completed, execute the water production process until the second water storage container is full and the high-pressure switch 18 trips.

[0173] Step C3: After the water purification process is completed, the full water process is executed, and the water purifier enters the full water standby state.

[0174] For flow-type water purifiers, the working method of this invention embodiment further includes a third rinsing process, specifically...

[0175] When the third flushing process is executed, the pretreatment water inlet switch 01 is closed to allow water to flow through the inlet end, the wastewater ratio solenoid valve 12 is energized and opened, the normally closed solenoid valve 2 8, normally closed solenoid valve 3 16, normally open solenoid valve 19 and double-way solenoid valve 10 are de-energized, the booster pump is started, and the state of the normally closed solenoid valve 4 22 is determined by the liquid level in the first water storage container.

[0176] During the water production process, a third flushing process is performed. The execution time of the third flushing process is determined by the water flow through the first flow meter and the corresponding sixth preset volume.

[0177] For flow-type water purifiers, the working method of this embodiment of the invention also includes a circulation process; specifically, during the period when the water purifier is in a full water standby state, if no water is used within a set time and the water purifier does not enter the water production state, the circulation process is executed.

[0178] When the cycle process is executed, the pretreatment water inlet switch 01 is closed to allow water to flow through the inlet end, the wastewater ratio solenoid valve 12 is energized and opened, the normally closed solenoid valve 28, normally closed solenoid valve 42, normally closed solenoid valve 316, normally open solenoid valve 19 and double-way solenoid valve 10 are de-energized, and the booster pump 6 is started.

[0179] In the circulating process, the water at the inlet flows out through the first outlet of the membrane structure and the wastewater ratio solenoid valve 12 and is discharged from the floor drain.

[0180] After the circulation process is completed, the water purifier enters a full-water standby state again.

[0181] The execution time of the cyclic process is determined by the water flow through the first flow meter and the corresponding seventh preset volume.

[0182] In practice, if no water is used for 24 hours, that is, the water purifier does not enter the water production process for 24 hours, the circulation process is executed. The execution time of the circulation process is determined by the water flow through the first flow meter and the corresponding seventh preset volume. After the circulation process is completed, the water purifier enters the full water standby state again.

[0183] The working method of this invention can realize intelligent flushing of reverse osmosis or nanofiltration membranes; the working method of this invention can more intelligently complete the emptying, including the emptying of the second water storage container and the emptying of the first water storage container; therefore, the working method of this invention effectively saves labor costs and avoids unnecessary expenditures.

[0184] The working method of this invention realizes the function of draining water after holidays or water pollution, effectively solving the problem of water not being fresh due to various short holidays, while ensuring the quality of water used by customers.

[0185] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0186] Furthermore, the terms "a," "two," etc., 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. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly defined.

[0187] In this application, unless otherwise expressly 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. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0188] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A method for operating a water purifier, characterized in that, The water purifier includes a first pipeline, one end of which is the inlet, and the other end of which is connected to the inlet of the membrane structure via a second pipeline. A pretreatment inlet switch (01) is installed on the first pipeline, and a booster pump (6) and at least one first pretreatment filter element (9) are installed on the second pipeline. The first outlet of the membrane structure is connected to a floor drain via a wastewater ratio solenoid valve (12). When the wastewater ratio solenoid valve is open, the flow rate of wastewater flowing into the floor drain through the wastewater ratio solenoid valve is greater than the flow rate when the wastewater ratio solenoid valve is closed. The second outlet of the membrane structure is connected to... The third pipeline is connected to the floor drain. A normally closed solenoid valve three (16) and a check valve one (17) are installed on the third pipeline. The second outlet of the membrane structure is connected to the inlet of check valve two (15). The outlet of check valve two (15) is connected to one end of the first branch. The first branch is equipped with check valve three (7) and a normally closed solenoid valve two (8). The other end of the first branch is connected to the second pipeline upstream of the booster pump (6). The outlet of check valve two (15) is connected to the water storage container. The inlets of check valve one (17) and check valve three (7) are both located near the second outlet of the membrane structure. The water storage container includes a first water storage container (21), and the outlet of the check valve 2 (15) is connected to the first water storage container (21) through a double-way solenoid valve (10); the water storage container also includes a second water storage container (20), and the outlet of the check valve 2 (15) is connected to the inlet of the second water storage container (20) through a second branch. A high-pressure switch (18) and a normally open solenoid valve (19) are provided on the second branch. When water is produced, the purified water obtained by the second outlet of the membrane structure, the high-pressure switch (18), the normally open solenoid valve (19) and the normally closed solenoid valve 4 (22) enter the first water storage container (21). After the liquid level in the first water storage container (21) reaches the set liquid level, the normally closed solenoid valve 4 (22) is de-energized, and the purified water is switched to enter the second water storage container (20). The double-way solenoid valve (10) is used to discharge the purified water in the first water storage container (21). The inlet of the second water storage container (20) and the first water storage container (21) are connected by a normally closed solenoid valve four (22); The working method includes a first flushing process, a second flushing process, a first draining process, a second draining process, a water production process, an electrical connection process, and a full water filling process, specifically: When performing the first flushing process: the pretreatment water inlet switch (01) is closed, the wastewater ratio solenoid valve (12) and the normally closed solenoid valve three (16) are energized and opened, the normally closed solenoid valve two (8) is kept de-energized, the booster pump (6) is started, and the water flow at the inlet end is discharged from the floor drain through the first and second outlets of the membrane structure. When the second flushing process is performed: the pretreatment water inlet switch (01) is closed, the normally closed solenoid valve three (16) is energized and opened, the wastewater ratio solenoid valve (12) and the normally closed solenoid valve two (8) are de-energized, the booster pump (6) is started, and the water flow at the inlet end is discharged from the floor drain through the first and second outlets of the membrane structure. When the first evacuation process is executed, the pretreatment water inlet switch (01) is disconnected, the normally closed solenoid valve three (16), the normally open solenoid valve (19), the normally closed solenoid valve four (22) and the double-pass solenoid valve (10) are de-energized, the normally closed solenoid valve two (8) and the wastewater ratio solenoid valve (12) are energized and opened, the booster pump (6) is started, and the high-pressure water in the second water storage container is discharged from the floor drain through the high-pressure switch (18), the normally open solenoid valve (19), the normally closed solenoid valve two (8) and the wastewater ratio solenoid valve (12); When the second venting process is executed, the pretreatment water inlet switch (01) is disconnected, and the states of the booster pump (6), normally closed solenoid valve 2 (8), wastewater ratio solenoid valve (12), normally closed solenoid valve 3 (16), normally open solenoid valve (19) and normally closed solenoid valve 4 (22) are the same as the states corresponding to the first venting process. The double-pass solenoid valve (10) is energized and opened, and the water in the first water storage container is discharged from the floor drain through the double-pass solenoid valve (10), normally closed solenoid valve 2 (8) and wastewater ratio solenoid valve (12). When the water production process is executed, the pretreatment inlet switch (01) is closed, the normally closed solenoid valve 2 (8), normally closed solenoid valve 3 (16) and wastewater ratio solenoid valve (12) are de-energized, the normally closed solenoid valve 4 (22) is energized and opened, the booster pump (6) is started, the water at the inlet flows through the membrane structure to produce pure water, the pure water enters the water storage container through its second outlet, and the wastewater generated in the water production process is discharged from the floor drain through the wastewater ratio solenoid valve (12); When the power-on process is executed, the pretreatment water inlet switch (01) is closed, the wastewater ratio solenoid valve (12) is energized and opened, the normally closed solenoid valve two (8) and normally closed solenoid valve three (16) are de-energized, and the booster pump (6) is started. When the full water process is executed, the pretreatment water inlet switch (01) is closed, the booster pump (6) is started, the wastewater ratio solenoid valve (12) is energized and opened, the normally closed solenoid valve three (16) and normally closed solenoid valve two (8) are de-energized, and the water purifier enters the full water standby state.

2. The working method according to claim 1, characterized in that, The pretreatment water inlet switch (01) includes a normally closed solenoid valve; a second pretreatment filter element (3) is also provided on the first pipeline, and the second pretreatment filter element (3) is located upstream of the normally closed solenoid valve; one end of the first pipeline is connected to the first end of the inlet three-way valve, the second end of the inlet three-way valve is connected to the tap water inlet, and the third end of the inlet three-way valve is connected to the tap water outlet; the membrane structure is a reverse osmosis membrane or a nanofiltration membrane.

3. The working method according to any one of claims 1-2, characterized in that, A first flow meter (5) is provided on the second pipeline between the connection point of the first branch and the second pipeline and the booster pump (6), or a first flow meter (5) is provided on the second pipeline downstream of the booster pump (6).

4. The working method according to claim 1, characterized in that, When the water production process is executed, the pretreatment inlet switch (01) is closed, the normally closed solenoid valve 2 (8), normally closed solenoid valve 3 (16), normally open solenoid valve (19), double-pass solenoid valve (10) and wastewater ratio solenoid valve (12) are de-energized, the normally closed solenoid valve 4 (22) is energized and opened, the booster pump (6) is started, the water flow at the inlet end passes through the membrane structure to produce pure water, the pure water enters the first water storage container (21) through its second outlet, high pressure switch (18), normally open solenoid valve (19) and normally closed solenoid valve 4 (22), after the liquid level in the first water storage container (21) reaches the set liquid level, the normally closed solenoid valve 4 (22) is de-energized, the pure water is switched to enter the second water storage container (20), and the wastewater generated by the water production process is discharged from the floor drain through the wastewater ratio solenoid valve (12); Furthermore: When performing the first flushing process and the second flushing process: the normally open solenoid valve (19) is energized and opened, while the normally closed solenoid valve four (22) and the double-way solenoid valve (10) remain de-energized; when performing the power-on process, the normally open solenoid valve (19) and the double-way solenoid valve (10) are de-energized, and the state of the normally closed solenoid valve four (22) is determined by the liquid level in the first water storage container; when performing the full water process, the double-way solenoid valve (10), the normally open solenoid valve (19), and the normally closed solenoid valve four (22) are de-energized.

5. The working method according to claim 1, characterized in that, For membrane structures used for the first time, the working method includes: The first rinsing process is executed within a first preset time period; After the first rinsing process is completed, the second rinsing process is executed, and the execution time of the second rinsing process is a second preset time. After the second flushing process is completed, the first evacuation process is executed, and the execution time of the first evacuation process is a third preset time. After the first evacuation process is completed, the water production process is executed until the second water storage container (20) is full and the high-pressure switch (18) trips. After the water purification process is completed, the full water process is executed, and the water purifier enters the full water standby state.

6. The working method according to claim 1, characterized in that, For situations where the interval between two water purification processes exceeds a set time, or where the water quality does not meet requirements, the working method includes: During a fourth preset time period, the first venting process is executed; and / or, during a fifth preset time period, the second venting process is executed; The water production process is executed until the second water storage container is full and the high-pressure switch (18) trips. After the water purification process is completed, the full water process is executed, and the water purifier enters the full water standby state.

7. The working method according to claim 1, characterized in that, For a water purifier in use, the working method includes: After the device is powered on again, the power-on procedure is executed. After the power-on process is completed, the water production process continues until the second water storage container (20) is full of water; After the water purification process is completed, the full water process is executed, and the water purifier enters the full water standby state.

8. The working method according to any one of claims 5-7, characterized in that, The method also includes a third rinsing process, specifically... When the third flushing process is performed, the pretreatment water inlet switch (01) is closed, the wastewater ratio solenoid valve (12) is energized and opened, the normally closed solenoid valve 2 (8), normally closed solenoid valve 3 (16), normally open solenoid valve (19) and double-pass solenoid valve (10) are de-energized, the booster pump is started, and the state of the normally closed solenoid valve 4 (22) is determined by the liquid level in the first water storage container. During the water production process, the third flushing process is performed, and the execution time of the third flushing process is a sixth preset time.

9. The working method according to any one of claims 5-7, characterized in that, The working method also includes a cyclic process, in which the cyclic process is executed if no water is used within a set time while the water purifier is in a full water standby state. When the cycle process is executed, the pretreatment water inlet switch (01) is closed, the wastewater ratio solenoid valve (12) is energized and opened, the normally closed solenoid valve 2 (8), normally closed solenoid valve 4 (22), normally closed solenoid valve 3 (16), normally open solenoid valve (19) and double-way solenoid valve (10) are de-energized, the booster pump (6) is started, and the water flow at the inlet end is discharged from the floor drain through the first outlet of the membrane structure; After the cycle is completed, the water purifier enters a full-water standby state again; The execution time of the cyclic process is the seventh preset time.

10. The working method according to claim 1, characterized in that, A first flow meter (5) is provided on the second pipeline between the connection point of the first branch and the second pipeline and the booster pump (6), or a first flow meter (5) is provided on the second pipeline downstream of the booster pump (6). The first flow meter is used to detect the flow rate of water flowing through the second pipeline.

11. The working method according to claim 10, characterized in that, For membrane structures used for the first time, the working method includes: The first flushing process is executed, and the execution time of the first flushing process is determined by the water flow through the first flow meter and the corresponding first preset volume. After the first rinsing process is completed, the second rinsing process is executed. The execution time of the second rinsing process is determined by the water flow through the first flow meter and the corresponding second preset volume. After the second flushing process is completed, the first evacuation process is executed. The execution time of the first evacuation process is determined by the water flow through the first flow meter and the corresponding third preset volume. After the first evacuation process is completed, the water production process is executed until the second water storage container is full and the high-pressure switch (18) trips. After the water purification process is completed, the full water process is executed, and the water purifier enters the full water standby state.

12. The working method according to claim 10, characterized in that, For situations where the interval between two water purification processes exceeds a set time, or where the water quality does not meet requirements, the working method includes: The first evacuation process is executed, the execution time of which is determined by the water flow through the first flow meter and the corresponding fourth preset volume; and / or, the second evacuation process is executed, the execution time of which is determined by the water flow through the first flow meter and the corresponding fifth preset volume. The water production process is executed until the second water storage container is full and the high-pressure switch (18) trips. After the water purification process is completed, the full water process is executed, and the water purifier enters the full water standby state.

13. The working method according to claim 10, characterized in that, For a water purifier in use, the working method includes: After the device is powered on again, the power-on procedure is executed. After the power-on process is completed, the water production process is executed until the second water storage container is full and the high-pressure switch (18) trips. After the water purification process is completed, the full water process is executed, and the water purifier enters the full water standby state.

14. The working method according to any one of claims 11-13, characterized in that, The method also includes a third rinsing process, specifically... When the third flushing process is performed, the pretreatment water inlet switch (01) is closed, the wastewater ratio solenoid valve (12) is energized and opened, the normally closed solenoid valve 2 (8), normally closed solenoid valve 3 (16), normally open solenoid valve (19) and double-pass solenoid valve (10) are de-energized, the booster pump is started, and the state of the normally closed solenoid valve 4 (22) is determined by the liquid level in the first water storage container. During the water production process, the third flushing process is performed, and the execution time of the third flushing process is determined by the water flow through the first flow meter and the corresponding sixth preset volume.

15. The working method according to any one of claims 11-13, characterized in that, The working method also includes a cyclic process, in which the cyclic process is executed if no water is used within a set time while the water purifier is in a full water standby state. When the cycle process is executed, the pretreatment water inlet switch (01) is closed, the wastewater ratio solenoid valve (12) is opened, the normally closed solenoid valve 2 (8), normally closed solenoid valve 4 (22), normally closed solenoid valve 3 (16), normally open solenoid valve (19) and double-pass solenoid valve (10) are closed, the booster pump (6) is started, and the water flow at the inlet end is discharged from the floor drain through the first outlet of the membrane structure. After the cycle is completed, the water purifier enters a full-water standby state again; The execution time of the cyclic process is determined by the water flow through the first flow meter and the corresponding seventh preset volume.

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