Membraneless water purification device and control method thereof

Abstract

This invention relates to the field of water purification technology, specifically providing a membrane-free water purification device and its control method, aiming to solve the problem of increased operating costs due to the frequent replacement of reverse osmosis membranes in existing water purifiers. To this end, the water purification device of this invention includes a water flow distribution device, a first treatment chamber, a second treatment chamber, and an electro-adsorption assembly. The two outlets of the water flow distributor are respectively connected to the inlets of the first and second treatment chambers. The electro-adsorption assembly includes a reversing device connected to a power source and a first electrode plate and a second electrode plate respectively disposed in the first and second treatment chambers, connected to the reversing device. By switching the connection mode of the first and second electrodes with the positive and negative terminals of the power source at a certain frequency, the first and second treatment chambers alternately function as purified water discharge chambers for adsorbing calcium and magnesium ions and as wastewater discharge chambers for discharging calcium and magnesium ions. Calcium and magnesium ions can be removed without the use of a filter membrane, reducing operating costs.

Description

Technical Field

[0001] This invention relates to the field of water purification technology, specifically providing a membrane-free water purification device and its control method. Background Technology

[0002] With the continuous improvement of people's living standards and the increasing awareness of healthy drinking water, water purification devices have become a common household appliance.

[0003] Currently, most household water purifiers on the market use reverse osmosis membranes to filter tap water to produce drinking water. Although reverse osmosis membranes have a high desalination rate, they need to be replaced after a period of use. To ensure good filtration results, the reverse osmosis membrane needs to be replaced frequently, which significantly increases operating costs.

[0004] Therefore, a new technical solution is needed in this field to solve the above problems. Summary of the Invention

[0005] The present invention aims to solve the above-mentioned technical problems, namely, to solve the problem that existing water purifiers require frequent replacement of reverse osmosis membranes, which increases the cost of use.

[0006] In a first aspect, the present invention provides a membrane-free water purification device, the water purification device comprising:

[0007] A water flow distributor has a raw water inlet, a first raw water outlet, and a second raw water outlet, and is used to adjust the ratio of the water flow at the first raw water outlet and the second raw water outlet.

[0008] A first processing chamber has a first inlet and a first outlet, wherein the first inlet is connected to the first raw water outlet;

[0009] The second processing chamber has a second inlet and a second outlet, the second inlet being connected to the second raw water outlet;

[0010] An electro-adsorption assembly includes a reversing device connected to a power source and a first electrode plate and a second electrode plate connected to the reversing device, wherein the first electrode plate and the second electrode plate are respectively disposed in the first processing chamber and the second processing chamber.

[0011] In the preferred embodiment of the above-mentioned water purification device, the water purification device includes a controller, which is communicatively connected to the water flow distributor and the inverted electrode device.

[0012] In the preferred embodiment of the above-mentioned water purification device, a first TDS sensor and a second TDS sensor are respectively installed in the first treatment chamber and the second treatment chamber, and a third TDS sensor is installed at the raw water inlet. The first TDS sensor, the second TDS sensor and the third TDS sensor are communicatively connected to the controller.

[0013] In the preferred embodiment of the above-mentioned water purification device, the water purification device includes a voltage regulating element for adjusting the voltage between the first electrode plate and the second electrode plate, and the voltage regulating element is communicatively connected to the controller.

[0014] In the preferred embodiment of the above-mentioned water purification device, the water purification device includes an inlet pipe, the downstream end of which is connected to the raw water inlet, and an adjustable water pump is installed on the inlet pipe, the water pump being communicatively connected to the controller.

[0015] In the preferred embodiment of the above-mentioned water purification device, the water purification device further includes a hardness sensor for detecting the hardness of the raw water, and the hardness sensor is communicatively connected to the controller.

[0016] With the above technical solution, the first electrode plate in the first processing chamber and the second electrode plate in the second processing chamber are respectively connected to the positive and negative terminals of the power supply. Raw water is divided into two streams by a water distributor, flowing into the first and second processing chambers respectively. Most of the water flows into the second processing chamber, while a small portion flows into the first processing chamber. Calcium and magnesium ions in the water in the second processing chamber are adsorbed onto the second electrode plate. The water without adsorbed calcium and magnesium ions flows out from the second outlet for drinking. After a period of time, the first and second electrode plates are connected to the negative and positive terminals of the power supply respectively via a reversing device, and the water distributor is adjusted so that most of the water flows into the first processing chamber, while a small portion flows into the second processing chamber. Calcium and magnesium ions in the water in the first processing chamber are adsorbed onto the first electrode plate. The water without adsorbed calcium and magnesium ions flows out from the first outlet for drinking. Simultaneously, the calcium and magnesium ions previously adsorbed onto the second electrode plate are released and discharged from the second outlet along with the water in the second processing chamber. After a period of time, the connection between the first and second plates and the power supply is switched again, and the water flow distributor is adjusted so that most of the water flows into the second processing chamber and a small portion flows into the first processing chamber, thus continuously circulating. This method can continuously produce pure water with calcium and magnesium ions removed, without the need for a filter membrane, avoiding the increased operating costs that would result from the need to replace the filter membrane over long-term use.

[0017] Preferably, the water flow distributor and the reversing device are communicatively connected to the controller of the water purification device, and can automatically switch the connection mode of the first and second plates with the power supply and the flow rate of the water flowing to the first and second processing chambers according to the set periodic frequency during operation.

[0018] Preferably, a first TDS sensor and a second TDS sensor are respectively installed in the first and second processing chambers, and a third TDS sensor is installed at the raw water inlet. The first, second, and third TDS sensors are communicatively connected to the controller. This configuration allows for the acquisition of the TDS (Total Dissolved Solids) value of the raw water and the TDS value of the water after calcium and magnesium ions have been adsorbed. Based on these values, the desalination rate can be calculated. If the desalination rate does not meet the requirements, the flow rate of water flowing to the electrode connected to the negative terminal of the power supply or the voltage between the two electrodes can be adjusted to achieve the required desalination rate.

[0019] Preferably, the water purification device further includes a hardness sensor for detecting the hardness of the raw water, and the hardness sensor is communicatively connected to the controller. With this configuration, the switching cycle of the connection between the first and second plates and the two poles of the power supply can be determined based on the hardness of the raw water before the water purification device operates, thus adapting the switching cycle to the hardness of the raw water.

[0020] In a second aspect, the present invention also provides a control method for a membrane-free water purification device, the water purifier comprising:

[0021] A water flow distributor has a raw water inlet, a first raw water outlet, and a second raw water outlet, and is used to adjust the ratio of the water flow at the first raw water outlet and the second raw water outlet.

[0022] A first processing chamber has a first inlet and a first outlet, wherein the first inlet is connected to the first raw water outlet;

[0023] The second processing chamber has a second inlet and a second outlet, the second inlet being connected to the second raw water outlet;

[0024] An electro-adsorption assembly includes a reversing device connected to a power source and a first electrode plate and a second electrode plate connected to the reversing device, wherein the first electrode plate and the second electrode plate are respectively disposed in the first processing chamber and the second processing chamber.

[0025] The control method includes:

[0026] Step S1: Connect the first electrode plate and the second electrode plate to the positive and negative terminals of the power supply respectively for a first preset time, and at the same time, introduce raw water into the first processing chamber and the second processing chamber at a first flow rate and a second flow rate respectively.

[0027] Step S2: Connect the first electrode plate and the second electrode plate to the negative and positive terminals of the power supply respectively for a second preset time. At the same time, feed raw water into the first processing chamber and the second processing chamber according to the second flow rate and the first flow rate respectively. Then return to step S1.

[0028] Wherein, the second preset duration is equal to the first preset duration, and the ratio of the first traffic to the second traffic is between 1 / 9 and 3 / 7.

[0029] In the preferred embodiment of the above control method, the water purification device includes a controller and a voltage regulating element for adjusting the voltage between the first electrode plate and the second electrode plate. A first TDS sensor and a second TDS sensor are respectively installed in the first processing chamber and the second processing chamber, and a third TDS sensor is installed at the raw water inlet. The water flow distributor, the reversing device, the voltage regulating element, the first TDS sensor, the second TDS sensor, and the third TDS sensor are communicatively connected to the controller.

[0030] The control method further includes:

[0031] Determine the desalination rate;

[0032] If the desalination rate is less than a preset value, the voltage between the first electrode and the second electrode is increased.

[0033] In the preferred embodiment of the above control method, the water purification device includes a controller and an inlet pipe. A first TDS sensor and a second TDS sensor are respectively installed in the first processing chamber and the second processing chamber. A third TDS sensor is installed at the raw water inlet. The downstream end of the inlet pipe is connected to the raw water inlet. An adjustable-speed water pump is installed on the inlet pipe. The water flow distributor, the polarity reversing device, the water pump, the first TDS sensor, the second TDS sensor, and the third TDS sensor are communicatively connected to the controller.

[0034] The control method further includes:

[0035] Determine the desalination rate;

[0036] If the desalination rate is less than a preset value, the speed of the water pump is reduced.

[0037] In a preferred embodiment of the above control method, the water purification device further includes a hardness sensor for detecting the hardness of the raw water, the hardness sensor being communicatively connected to the controller; before step S1, the control method further includes:

[0038] To determine the hardness of the raw water;

[0039] The first preset time is determined based on the hardness of the raw water.

[0040] It should be noted that this control method has all the technical effects of the aforementioned membrane-free water purification device, which will not be elaborated here. Attached Figure Description

[0041] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings, in which:

[0042] Figure 1 This is a schematic diagram of the structure of a water purification device according to an embodiment of the present invention;

[0043] Figure 2 This is a schematic diagram of the main steps of the control method of the water purification device of the present invention.

[0044] List of reference numerals in the attached diagram:

[0045] 1. Water flow distributor; 2. First processing chamber; 21. First outlet; 3. Second processing chamber; 31. Second outlet; 41. First electrode plate; 42. Second electrode plate; 43. H-bridge reversal circuit; 44. Programmable DC-DC circuit; 51. Circuit board; 52. Main control MCU circuit; 61. First TDS sensor; 62. Second TDS sensor; 63. Third TDS sensor; 71. Raw water tank; 72. Hardness sensor; 8. Water pump. Detailed Implementation

[0046] First, those skilled in the art should understand that the embodiments described below are merely for explaining the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. For example, the water purification device of the present invention may be a cabinet-type water purifier, a countertop water purifier, or a wall-mounted water purifier, etc.

[0047] It should be noted that in the description of this invention, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0048] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; and it can also refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0049] Addressing the issue mentioned in the background art where existing water purifiers require frequent replacement of reverse osmosis membranes, increasing operating costs, this invention provides a membrane-free water purification device. This device includes a water flow distribution device, a first treatment chamber, a second treatment chamber, and an electro-adsorption assembly. The water flow distribution device has a raw water inlet, a first raw water outlet, and a second raw water outlet, used to adjust the ratio of water flow at the first and second raw water outlets. The first treatment chamber has a first inlet and a first outlet, with the first inlet connected to the first raw water outlet. The second treatment chamber has a second inlet and a second outlet, with the second inlet connected to the second raw water outlet. The electro-adsorption assembly includes a reversing device connected to a power source and a first electrode plate and a second electrode plate connected to the reversing device. The first and second electrode plates are respectively disposed in the first and second treatment chambers.

[0050] During use, the first and second electrode plates in the first and second processing chambers are connected to the positive and negative terminals of the power supply, respectively. Raw water is divided into two streams by a water distributor, flowing into the first and second processing chambers respectively. Most of the water flows into the second processing chamber, while a small portion flows into the first. Calcium and magnesium ions in the water in the second processing chamber are adsorbed onto the second electrode plate. The water without adsorbed calcium and magnesium ions flows out from the second outlet for drinking. After a period of time, the first and second electrode plates are connected to the negative and positive terminals of the power supply via a reversal device, and the water distributor is adjusted so that most of the water flows into the first processing chamber, while a small portion flows into the second processing chamber. Calcium and magnesium ions in the water in the first processing chamber are adsorbed onto the first electrode plate. The water without adsorbed calcium and magnesium ions flows out from the first outlet for drinking. Simultaneously, the calcium and magnesium ions previously adsorbed onto the second electrode plate are released and discharged from the second outlet along with the water in the second processing chamber. After a period of time, the connection between the first and second plates and the power supply is switched again, and the water flow distributor is adjusted so that most of the water flows into the second processing chamber and a small portion flows into the first processing chamber, thus continuously circulating. This method can continuously produce pure water with calcium and magnesium ions removed, without the need for a filter membrane, avoiding the increased operating costs that would result from the need to replace the filter membrane over long-term use.

[0051] The following reference Figure 1 The water purification device of the present invention will now be described. Among other things, Figure 1 This is a schematic diagram of the structure of a water purification device according to an embodiment of the present invention.

[0052] like Figure 1As shown, the water purification device of the present invention includes a water flow distributor 1, a first processing chamber 2, a second processing chamber 3, an electro-adsorption component, a controller, and a raw water tank 71 as a water source. The water flow distributor 1 has a raw water inlet, a first raw water outlet, and a second raw water outlet. The water flow distributor 1 is used to adjust the ratio of water flow at the first and second raw water outlets. For example, the water flow distributor 1 can be a three-way proportional control valve capable of adjusting the opening of the two outlets, or it can be a combination device where two solenoid valves are connected to the two outlets of a three-way pipe respectively. The raw water inlet is connected to the raw water tank 71 through an inlet pipe, and a water pump 8 with adjustable speed is connected in series on the inlet pipe. The first processing chamber 2 has a first inlet and a first outlet 21, with the first inlet communicating with the first raw water outlet. The second processing chamber 3 has a second inlet and a second outlet 31, with the second inlet communicating with the second raw water outlet. A first TDS sensor 61 is installed in the first processing chamber 2, a second TDS sensor 62 is installed in the second processing chamber 3, and a third TDS sensor 63 is installed at the raw water inlet of the water flow distributor 1. A hardness sensor 72 for detecting the hardness of raw water is installed inside the raw water tank 72. The controller includes a circuit board 51 and a main control MCU circuit 52 mounted on the circuit board 51. The electro-adsorption assembly includes an H-bridge reversing circuit 43 mounted on the circuit board 51 and a first electrode plate 41 and a second electrode plate 42 respectively mounted in the first processing chamber 2 and the second processing chamber 3. A programmable DC-DC circuit 44 is also mounted on the circuit board 51, which can output a voltage of 5-36V. The first electrode plate 41 and the second electrode plate 42 are respectively connected to the H-bridge reversing circuit 43, which serves as a reversing device, via wires. The H-bridge reversing circuit 43 is connected to the programmable DC-DC circuit 44 via wires. The H-bridge reversing circuit 43, the programmable DC-DC circuit 44, the water flow distributor 1, the first TDS sensor 61, the second TDS sensor 62, the third TDS sensor 63, the hardness sensor 72, and the main control MCU circuit 52 are communicatively connected. It can be understood that the communication connection can be a wired communication line or a wireless connection such as Bluetooth.

[0053] During use, the main control MCU circuit 52 controls the H-bridge inversion circuit 43 to connect the first electrode plate 41 and the second electrode plate 42 in the first processing chamber 2 and the second processing chamber 3 to the positive and negative terminals of the programmable DC-DC circuit 44, respectively. At the same time, the main control MCU circuit 52 controls the water pump 8 to work, and the water in the raw water tank 71 is transported to the water distributor 1. The raw water is divided into two streams by the water distributor 1 and flows into the first processing chamber 2 and the second processing chamber 3, respectively. Most of the water flows into the second processing chamber 3 and a small portion flows into the first processing chamber 2. The calcium and magnesium ions in the water in the second processing chamber 3 are adsorbed on the second electrode plate 42. The water with the adsorbed calcium and magnesium ions flows out from the second outlet 31 for the user to drink. After a period of time, the main control MCU circuit 52 controls the H-bridge reversing circuit 43 to connect the first electrode 41 and the second electrode 42 to the negative and positive terminals of the programmable DC-DC circuit 44, respectively, and adjusts the water flow distributor 1 so that most of the water flows into the first processing chamber 2 and a small portion flows into the second processing chamber 3. Calcium and magnesium ions in the water in the first processing chamber 2 are adsorbed onto the first electrode 41, and the water with adsorbed calcium and magnesium ions flows out from the first outlet 21 for the user to drink. At the same time, the calcium and magnesium ions previously adsorbed onto the second electrode 42 are released and discharged from the second outlet 31 along with the water in the second processing chamber 3. After another period of time, the main control MCU circuit 52 controls the H-bridge reversing circuit 43 to switch the connection mode of the first electrode 41 and the second electrode 42 with the programmable DC-DC circuit 44 again, and adjusts the water flow distributor 1 so that most of the water flows into the second processing chamber 3 and a small portion flows into the first processing chamber 2, and so on in a continuous cycle. This method can continuously produce pure water with calcium and magnesium ions removed, without the need for a filter membrane, thus avoiding increased operating costs due to the need to replace filter membranes over long-term use. The inventors of this invention have verified through experiments that the purified water to wastewater ratio during the desalination process of this water purification device is far higher than that of existing reverse osmosis membranes, and no scale buildup occurs on the plates during use, maintaining high purification efficiency even after long-term use.

[0054] A first TDS sensor 61 and a second TDS sensor 62 are respectively installed in the first processing chamber 2 and the second processing chamber 3. A third TDS sensor 63 is installed at the raw water inlet. The first TDS sensor 61, the second TDS sensor 62 and the third TDS sensor 63 are connected to the main control MCU circuit. The programmable DC-DC circuit 44 is configured to adjust the output voltage between 5 and 36V. The water pump 8 is configured to have an adjustable speed. In this way, the desalination rate can be calculated based on the detection values ​​of the third TDS sensor 63 and the first TDS sensor 61 or the second TDS sensor 62 (when the first electrode plate 41 is connected to the positive terminal of the programmable DC-DC circuit 44, the desalination rate is calculated based on the detection values ​​of the third TDS sensor 63 and the second TDS sensor 62; when the first electrode plate 41 is connected to the negative terminal of the programmable DC-DC circuit 44, the desalination rate is calculated based on the detection values ​​of the third TDS sensor 63 and the first TDS sensor 61). When the desalination rate is less than the set value (e.g., 95%), increase the voltage between the first electrode 41 and the second electrode 42 or decrease the speed of the water pump 8 until the desalination rate reaches the set value. Alternatively, when the desalination rate is less than the set value (e.g., 95%), first increase the voltage between the first electrode 41 and the second electrode 42. If the desalination rate still does not reach the set value when the voltage is increased to the maximum, then decrease the speed of the water pump 8. This setting allows for more accurate water desalination.

[0055] By installing a hardness sensor 72 in the raw water tank 71 to detect the hardness of the raw water, the hardness of the raw water in the raw water tank 71 can be detected. Then, before starting work, the cycle duration for switching the connection mode of the first electrode plate 41 and the second electrode plate 42 can be set according to the hardness of the raw water in the raw water tank 71, so as to remove calcium and magnesium ions in the water more accurately.

[0056] It should be noted that using the original water tank 71 as the water source in the above embodiment is only a specific setting method. In actual applications, it can be adjusted, such as using a tap water pipe as the water source.

[0057] In another feasible embodiment, the hardness sensor 72 in the above embodiment can be removed, and the switching cycle of the connection mode between the first electrode plate and the second electrode plate and the two poles of the power supply can be set to a preset duration.

[0058] In another feasible embodiment, the reversing device of the above embodiment is configured as a mechanical switching device, and the user can manually switch the connection mode between the first electrode plate 41 and the second electrode plate 42 and the positive and negative terminals of the power supply.

[0059] Reference Figure 2 The control method of the water purification device of the present invention will be introduced here. Figure 2 This is a schematic diagram of the main steps of the control method of the water purification device of the present invention.

[0060] like Figure 2 As shown, the control method of the water purification device of the present invention mainly includes the following steps:

[0061] Step S1: Connect the first electrode plate and the second electrode plate to the positive and negative terminals of the power supply respectively for a first preset time, and at the same time, introduce raw water into the first processing chamber and the second processing chamber at the first flow rate and the second flow rate respectively.

[0062] Step S2: Connect the first electrode plate and the second electrode plate to the negative and positive terminals of the power supply, respectively, for a second preset duration. Simultaneously, feed raw water into the first and second processing chambers at the second and first flow rates, respectively. Then return to step S1. The second preset duration is equal to the first preset duration, and the ratio of the first flow rate to the second flow rate is between 1 / 9 and 3 / 7.

[0063] In other words, the first and second electrode plates in the first and second processing chambers are connected to the positive and negative terminals of the power supply, respectively. Raw water is divided into two streams by a water distributor, flowing into the first and second processing chambers respectively. Most of the water flows into the second processing chamber, while a small portion flows into the first. Calcium and magnesium ions in the water in the second processing chamber are adsorbed onto the second electrode plate. The water without adsorbed calcium and magnesium ions flows out from the second outlet for drinking. After a period of time, the first and second electrode plates are reconnected to the negative and positive terminals of the power supply via a reversal device, and the water distributor is adjusted so that most of the water flows into the first processing chamber, while a small portion flows into the second. Calcium and magnesium ions in the water in the first processing chamber are adsorbed onto the first electrode plate, and the water without adsorbed calcium and magnesium ions flows out from the first outlet for drinking. Simultaneously, the calcium and magnesium ions previously adsorbed onto the second electrode plate are released and discharged from the second outlet along with the water in the second processing chamber. After another period of time, the connection method of the first and second electrode plates to the power supply is switched again, and the water distributor is adjusted so that most of the water flows into the second processing chamber, while a small portion flows into the first processing chamber. This cycle continues continuously. This allows for the continuous production of purified water with calcium and magnesium ions removed, eliminating the need for filter membranes and avoiding increased operating costs due to the need to replace filter membranes over long-term use.

[0064] Preferably, the water purification device includes a controller and a voltage regulating element for adjusting the voltage between the first and second electrodes. A first TDS sensor and a second TDS sensor are respectively installed in the first and second processing chambers, and a third TDS sensor is installed at the raw water inlet. The water flow distributor, the electrode reversing device, the voltage regulating element, the first TDS sensor, the second TDS sensor, and the third TDS sensor are communicatively connected to the controller. The control method of the water purification device further includes:

[0065] Determine the desalination rate;

[0066] If the desalination rate is less than the preset value, the voltage between the first and second plates is increased.

[0067] Specifically, when the first electrode is connected to the positive terminal of the power supply, the desalination rate is calculated based on the detection values ​​of the third TDS sensor and the second TDS sensor; when the first electrode is connected to the negative terminal of the power supply, the desalination rate is calculated based on the detection values ​​of the third TDS sensor and the first TDS sensor. When the desalination rate is less than a set value (e.g., 95%), the voltage between the first electrode and the second electrode is increased.

[0068] Preferably, the water purification device further includes a hardness sensor for detecting the hardness of the raw water, and the hardness sensor is communicatively connected to the controller. Before step S1, the control method for the water purification device further includes:

[0069] To determine the hardness of the raw water;

[0070] The first preset time is determined based on the hardness of the raw water.

[0071] With this setup, when the water purifier is turned on, the hardness of the raw water is first obtained through a hardness sensor. The first preset time is then determined based on the stored mapping relationship between the first preset time and the water hardness, as well as the detected hardness of the raw water.

[0072] With this setup, the reversal cycle time of the first and second plates of the water purification device is different when processing raw water of different hardness, ensuring the desalination effect and avoiding excessive reversal operations when the raw water hardness is low.

[0073] In another preferred embodiment, the water purification device includes a controller and an inlet pipe. A first TDS sensor and a second TDS sensor are respectively installed in the first and second treatment chambers. A third TDS sensor is installed at the raw water inlet. The downstream end of the inlet pipe is connected to the raw water inlet. An adjustable-speed water pump is installed on the inlet pipe. A water flow distributor, a polarity reversing device, the water pump, the first TDS sensor, the second TDS sensor, and the third TDS sensor are communicatively connected to the controller. The control method of the water purification device further includes:

[0074] Determine the desalination rate;

[0075] If the desalination rate is less than the preset value, reduce the pump speed.

[0076] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A water purification device without membrane elements, characterized in that, The water purification device includes: A water flow distributor has a raw water inlet, a first raw water outlet, and a second raw water outlet, and is used to adjust the ratio of the water flow at the first raw water outlet and the second raw water outlet. A first processing chamber has a first inlet and a first outlet, wherein the first inlet is connected to the first raw water outlet; The second processing chamber has a second inlet and a second outlet, the second inlet being connected to the second raw water outlet; An electro-adsorption assembly includes a reversing device connected to a power source and a first electrode plate and a second electrode plate connected to the reversing device, wherein the first electrode plate and the second electrode plate are respectively disposed in the first processing chamber and the second processing chamber.

2. The water purification device according to claim 1, characterized in that, The water purification device includes a controller, which is communicatively connected to the water flow distributor and the polarity reversal device.

3. The water purification device according to claim 2, characterized in that, A first TDS sensor and a second TDS sensor are respectively installed in the first processing chamber and the second processing chamber, and a third TDS sensor is installed at the raw water inlet. The first TDS sensor, the second TDS sensor and the third TDS sensor are communicatively connected to the controller.

4. The water purification device according to claim 3, characterized in that, The water purification device includes a voltage regulating element for adjusting the voltage between the first electrode plate and the second electrode plate, and the voltage regulating element is communicatively connected to the controller.

5. The water purification device according to claim 3, characterized in that, The water purification device includes an inlet pipe, the downstream end of which is connected to the raw water inlet. An adjustable water pump is installed on the inlet pipe, and the water pump is communicatively connected to the controller.

6. The water purification device according to any one of claims 2 to 5, characterized in that, The water purification device also includes a hardness sensor for detecting the hardness of the raw water, and the hardness sensor is communicatively connected to the controller.

7. A control method for a membrane-free water purification device, characterized in that, The water purification device includes: A water flow distributor has a raw water inlet, a first raw water outlet, and a second raw water outlet, and is used to adjust the ratio of the water flow at the first raw water outlet and the second raw water outlet. A first processing chamber has a first inlet and a first outlet, wherein the first inlet is connected to the first raw water outlet; The second processing chamber has a second inlet and a second outlet, the second inlet being connected to the second raw water outlet; An electro-adsorption assembly includes a reversing device connected to a power source and a first electrode plate and a second electrode plate connected to the reversing device, wherein the first electrode plate and the second electrode plate are respectively disposed in the first processing chamber and the second processing chamber. The control method includes: Step S1: Connect the first electrode plate and the second electrode plate to the positive and negative terminals of the power supply respectively for a first preset time, and at the same time, introduce raw water into the first processing chamber and the second processing chamber at a first flow rate and a second flow rate respectively. Step S2: Connect the first electrode plate and the second electrode plate to the negative and positive terminals of the power supply respectively for a second preset time. At the same time, feed raw water into the first processing chamber and the second processing chamber according to the second flow rate and the first flow rate respectively. Then return to step S1. Wherein, the second preset duration is equal to the first preset duration, and the ratio of the first traffic to the second traffic is between 1 / 9 and 3 / 7.

8. The control method according to claim 7, characterized in that, The water purification device includes a controller and a voltage regulating element for adjusting the voltage between the first electrode plate and the second electrode plate. A first TDS sensor and a second TDS sensor are respectively installed in the first processing chamber and the second processing chamber. A third TDS sensor is installed at the raw water inlet. The water flow distributor, the polarity reversing device, the voltage regulating element, the first TDS sensor, the second TDS sensor, and the third TDS sensor are communicatively connected to the controller. The control method further includes: Determine the desalination rate; If the desalination rate is less than a preset value, the voltage between the first electrode and the second electrode is increased.

9. The control method according to claim 7, characterized in that, The water purification device includes a controller and an inlet pipe. A first TDS sensor and a second TDS sensor are respectively installed in the first treatment chamber and the second treatment chamber. A third TDS sensor is installed at the raw water inlet. The downstream end of the inlet pipe is connected to the raw water inlet. An adjustable-speed water pump is installed on the inlet pipe. The water flow distributor, the polarity reversing device, the water pump, the first TDS sensor, the second TDS sensor, and the third TDS sensor are communicatively connected to the controller. The control method further includes: Determine the desalination rate; If the desalination rate is less than a preset value, the speed of the water pump is reduced.

10. The control method according to claim 8 or 9, characterized in that, The water purification device also includes a hardness sensor for detecting the hardness of the raw water, and the hardness sensor is communicatively connected to the controller; Prior to step S1, the control method further includes: To determine the hardness of the raw water; The first preset time is determined based on the hardness of the raw water.

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