Water purification system control method

Abstract

The present invention relates to a control method for a water purification system. The water purification system includes: a first filter element having a raw water inlet, a purified water outlet, and a wastewater outlet; a booster pump disposed upstream of the raw water inlet, the booster pump being capable of driving water to enter the first filter element from the raw water inlet; a water flow parameter detection component disposed upstream of the booster pump; the control method includes: when a preset start condition is satisfied, controlling the operating parameters of the booster pump to a preset operating parameter range; when the water flow parameters detected by the water flow parameter detection component are within a preset water flow parameter range, controlling the booster pump to operate within the preset operating parameter range; when the water flow parameters detected by the water flow parameter detection component are not within the preset water flow parameter range, controlling the booster pump to be adjusted according to a preset rule. The water purification system of the present invention can provide users with a water purification experience of large flow rate and low noise.

Description

Technical Field

[0001] The present invention relates to the field of water purification equipment, and particularly to a control method for a water purification system. Background Art

[0002] At present, with the increasing demand of users for large-flow water purification, how to obtain a larger water purification flow rate and lower operating noise of the water purifier has become a major pain point in the use of water purifiers.

[0003] Therefore, based on the experience and practice of the inventor in the related industry for many years, a control method for a water purification system is proposed to overcome the defects of the prior art. Summary of the Invention

[0004] The purpose of the present invention is to provide a control method for a water purification system, which can provide users with a water purification experience of large flow rate and low noise.

[0005] The purpose of the present invention can be achieved by the following solutions:

[0006] The present invention provides a control method for a water purification system, and the water purification system includes:

[0007] A first filter element having a raw water inlet, a purified water outlet and a wastewater outlet;

[0008] A booster pump provided upstream of the raw water inlet, and the booster pump can drive water to enter the first filter element from the raw water inlet;

[0009] A water flow parameter detection component provided upstream of the booster pump;

[0010] The control method includes: when a preset start condition is satisfied, controlling the operating parameters of the booster pump to a preset operating parameter range;

[0011] When the water flow parameters detected by the water flow parameter detection component are within a preset water flow parameter range, controlling the booster pump to operate within the preset operating parameter range;

[0012] When the water flow parameters detected by the water flow parameter detection component are not within the preset water flow parameter range, controlling the booster pump to be adjusted according to a preset rule.

[0013] In a preferred embodiment of the present invention, when the water flow parameters detected by the water flow parameter detection component are not within the preset water flow parameter range, controlling the booster pump to be adjusted to an operating parameter at which the water flow parameters detected by the water flow parameter detection component approach or are within the preset water flow parameter range.

[0014] In a preferred embodiment of the present invention, the preset operating parameter range at least includes one of the following parameter ranges: a preset current range, a preset voltage range, a preset operating speed range, or a preset power range.

[0015] In a preferred embodiment of the present invention, the water flow parameter detection component is a pressure detection component, a flow rate detection component, or a flow detection component.

[0016] In a preferred embodiment of the present invention, the first filter element is a reverse osmosis filter element or a fiber membrane filter element.

[0017] In a preferred embodiment of the present invention, the water flow parameter detection component is a pressure detection component, and the control method includes:

[0018] When the water pressure parameter detected by the pressure detection component is within the preset water pressure parameter range, control the booster pump to operate within the preset operating parameter range;

[0019] When the water pressure parameter detected by the pressure detection component is not within the preset water pressure parameter range, control the booster pump to adjust to an operating parameter at which the water pressure detected by the pressure detection component approaches or is within the preset water pressure parameter range.

[0020] In a preferred embodiment of the present invention, when the booster pump operates within the preset operating parameter range, the noise of the water purification system is less than or equal to a preset noise value, and the purified water output flow rate of the water purification system is greater than or equal to a preset flow rate.

[0021] In a preferred embodiment of the present invention, when the water pressure parameter detected by the pressure detection component is less than or equal to the minimum value of the preset water pressure parameter range, or the water pressure parameter detected by the pressure detection component is greater than or equal to the maximum value of the preset water pressure parameter range, control the booster pump to adjust to an operating parameter at which the water pressure parameter detected by the pressure detection component approaches or is within the preset water pressure parameter range.

[0022] In a preferred embodiment of the present invention, when the water pressure parameter detected by the pressure detection component is greater than or equal to the maximum value of the preset water pressure parameter range, control the operating speed of the booster pump to increase from the preset operating speed range to an operating speed at which the water pressure parameter detected by the pressure detection component decreases to approach or is within the preset water pressure parameter range.

[0023] In a preferred embodiment of the present invention, when the water pressure parameter detected by the pressure detection component is greater than or equal to the maximum value of the preset water pressure parameter range, the operating speed of the booster pump is adjusted so that the water pressure parameter detected by the pressure detection component decreases to approach or be within the preset water pressure parameter range, and then the booster pump maintains the adjusted operating speed.

[0024] In a preferred embodiment of the present invention, when the water pressure parameter detected by the pressure detection component is less than or equal to the minimum value of the preset water pressure parameter range, the operating speed of the booster pump is controlled to decrease from the preset operating speed range to an operating speed at which the water pressure parameter detected by the pressure detection component increases to approach or be within the preset water pressure parameter range.

[0025] In a preferred embodiment of the present invention, when the water pressure parameter detected by the pressure detection component is less than or equal to the minimum value of the preset water pressure parameter range, the operating speed of the booster pump is adjusted so that the water pressure parameter detected by the pressure detection component increases to approach or be within the preset water pressure parameter range, and then the booster pump maintains the adjusted operating speed.

[0026] In a preferred embodiment of the present invention, the preset operating parameter range is the preset operating speed range, and the preset operating speed range is from 700 rpm to 800 rpm; the preset water flow parameter range is the preset water pressure parameter range, and the preset water pressure parameter range is from 2 psi to 9 psi.

[0027] In a preferred embodiment of the present invention, the water purification system further includes a second filter element, the second filter element is arranged upstream of the booster pump, and the water flow parameter detection component is arranged between the second filter element and the booster pump.

[0028] In a preferred embodiment of the present invention, the second filter element is a pretreatment filter element, and the pretreatment filter element includes PP cotton and / or carbon fiber and / or granular activated carbon.

[0029] In a preferred embodiment of the present invention, the preset start condition includes the obtained water use signal of the user.

[0030] In a preferred embodiment of the present invention, when the water pressure parameter detected by the pressure detection component is greater than or equal to the maximum value of the preset water pressure parameter range, the operating speed of the booster pump is controlled to increase. When the operating speed of the booster pump increases to the preset maximum operating speed, if the water pressure parameter still does not approach the maximum value of the preset water pressure parameter range, then the booster pump is controlled to maintain the maximum operating speed or the booster pump is controlled to stop operating.

[0031] In a preferred embodiment of the present invention, when the water pressure parameter detected by the pressure detection component is less than or equal to the minimum value of the preset water pressure parameter range, the operating speed of the booster pump is controlled to decrease. When the operating speed of the booster pump decreases to less than the preset minimum operating speed, if the water pressure parameter still does not approach the minimum value of the preset water pressure parameter range, then the booster pump is controlled to maintain the minimum operating speed or the booster pump is controlled to stop operating.

[0032] In a preferred embodiment of the present invention, when the water pressure parameter detected by the pressure detection component is less than or equal to the minimum value of the preset water pressure parameter range, if after a first preset time, the operating speed of the booster pump decreases to be greater than the preset water shortage speed and the water pressure parameter detected by the pressure detection component is negative pressure, it is determined that the water purification system meets the water shortage condition, and the booster pump is controlled to stop operating. It is determined that the water purification system meets the water shortage condition, and the booster pump is controlled to stop operating.

[0033] In a preferred embodiment of the present invention, when the preset start condition is satisfied, if within a second preset time, the operating parameters of the booster pump do not reach the minimum value of the preset operating parameter range, then the booster pump is controlled to stop operating.

[0034] As described above, the characteristics and advantages of the water purification system control method of the present invention are: a booster pump for driving water to enter the first filter element from the raw water inlet is provided upstream of the raw water inlet of the first filter element in the water purification system, and a water flow parameter detection component is provided upstream of the booster pump. When the water purification system meets the preset start condition, the operating parameters of the booster pump are controlled to start operating within the preset operating parameter range, so that the water purification system ensures the effects of large flow and low noise at the start-up stage; during use, when the water flow parameter detected by the water flow parameter detection component is within the preset water flow parameter range, the booster pump is controlled to operate within the preset operating parameter range to maintain the effects of large flow and low noise of the water purification system during the operating state; when the water flow parameter detected by the water flow parameter detection component is not within the preset water flow parameter range, the booster pump is controlled to adjust to the operating parameter at which the water flow parameter detected by the water flow parameter detection component approaches or is within the preset water flow parameter range, thereby avoiding the occurrence of excessive noise or water shortage alarm when the booster pump operates under the state of negative pressure in front of the pump, prolonging the service life of the booster pump, and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The following drawings are only intended to illustrate and explain the present invention schematically and do not limit the scope of the present invention.

[0036] Wherein:

[0037] Figure 1 : is one of the flow block diagrams of the water purification system control method of the present invention.

[0038] Figure 2 : It is the second flow block diagram of the control method for the water purification system of the present invention.

[0039] Figure 3 : It is the third flow block diagram of the control method for the water purification system of the present invention.

[0040] Figure 4 : It is the structural schematic diagram of the water purification system in the control method for the water purification system of the present invention.

[0041] Figure 5 : It is the layout diagram of the booster pump in the control method for the water purification system of the present invention.

[0042] Figure 6 : It is the three-dimensional view of the booster pump in the control method for the water purification system of the present invention.

[0043] Figure 7 : It is the front view of the booster pump in the control method for the water purification system of the present invention.

[0044] Figure 8 : It is the three-dimensional view of the buffer in the control method for the water purification system of the present invention.

[0045] Figure 9 : It is the front view of the buffer in the control method for the water purification system of the present invention.

[0046] Figure 10 : It is Figure 9 the cross-sectional schematic diagram in the A-A direction in

[0047] The reference numerals in the present invention are:

[0048] 1. Water flow parameter detection component; 2. Booster pump;

[0049] 3. First filter element; 301. Raw water inlet;

[0050] 302. Purified water outlet; 303. Waste water outlet;

[0051] 4. Second filter element; 5. First valve member;

[0052] 6. Third filter element; 7. Second valve member;

[0053] 8. Pump chamber; 9. Sound insulation layer;

[0054] 10. Sheet metal structural member; 11. Hoop;

[0055] 12. Shock absorber; 13. Buffer;

[0056] 1301. Convex part; 1302. Buffer cavity;

[0057] 1303. Concave part. Detailed implementation manner

[0058] For a clearer understanding of the technical features, objectives, and effects of the present invention, the specific implementation manner of the present invention will now be described with reference to the accompanying drawings.

[0059] As Figures 1 to 4 shown, the present invention provides a control method for a water purification system. The water purification system includes a first filter element 3, a booster pump 2, and a water flow parameter detection component 1. The first filter element 3 has a raw water inlet 301, a purified water outlet 302, and a wastewater outlet 303. The booster pump 2 is arranged upstream of the raw water inlet 301, and the booster pump 2 can drive water to enter the first filter element 3 from the raw water inlet 301. The water flow parameter detection component 1 is arranged upstream of the booster pump 2.

[0060] As Figures 1 to 3 shown, the control method includes: when the preset start condition is satisfied, controlling the operating parameters of the booster pump 2 to the preset operating parameter range (N 最小 <N 实际 <N 最大 ); when the water flow parameter detected by the water flow parameter detection component 1 is within the preset water flow parameter range (M 最小 <M 实际 <M 最大 ), controlling the booster pump 2 to operate within the preset operating parameter range; when the water flow parameter detected by the water flow parameter detection component 1 is not within the preset water flow parameter range (M 实际 ≤M 最小 or M 实际 ≥M 最大 ), controlling the booster pump 2 to adjust according to a preset rule.

[0061] In the present invention, a booster pump 2 for driving water to enter the first filter element 3 from the raw water inlet 301 is provided upstream of the raw water inlet 301 of the first filter element 3 in the water purification system, and a water flow parameter detection component 1 is provided upstream of the booster pump 2. When the water purification system meets the preset start-up conditions, the operating parameters of the booster pump 2 are directly controlled to the preset operating parameter range to start running, so that the large flow rate and low noise effects are ensured in the start-up stage of the water purification system; during the use of the water purification system, when the water flow parameters detected by the water flow parameter detection component 1 are within the preset water flow parameter range, the booster pump 2 is controlled to operate within the preset operating parameter range to maintain the operating state of the water purification system with both large flow rate and low noise; when the water flow parameters detected by the water flow parameter detection component 1 are not within the preset water flow parameter range (i.e., less than or equal to the minimum value of the preset water flow parameter range, or greater than or equal to the maximum value of the preset water flow parameter range), the booster pump 2 is controlled to adjust to the operating parameters at which the water flow parameters detected by the water flow parameter detection component 1 approach or are within the preset water flow parameter range, so as to avoid the occurrence of excessive noise or water shortage alarm when the booster pump 2 operates in the negative pressure state in front of the pump when the water flow parameters detected by the water flow parameter detection component 1 are less than or equal to the minimum value of the preset water flow parameter range, extend the service life of the booster pump 2, and improve the user experience; or when the water flow parameters detected by the water flow parameter detection component 1 are greater than or equal to the maximum value of the preset water flow parameter range, the booster pump 2 is adjusted so that the user can obtain a larger amount of purified water.

[0062] Among them, the water entering the first filter element 3 through the raw water inlet 301 can be, but is not limited to, tap water. After the first filter element 3 in the water purification system purifies the tap water, it is supplied to the user through the purified water outlet 302, and the generated waste liquid is discharged through the waste water outlet 303 of the first filter element 3.

[0063] In an optional embodiment of the present invention, the preset start-up conditions include the obtained user water use signal. After the water purification system receives the user water use signal, it controls the operating parameters of the booster pump 2 to the preset operating parameter range (N 最小 <N 实际 <N 最大 ) to start running.

[0064] In an alternative embodiment of the present invention, the preset operating parameter range includes a preset operating speed range. Within this preset operating speed range, the booster pump 2 can not only ensure a large flow rate of the water purification system but also ensure that the water purification system generates low noise, enhancing the user experience. When the preset operating parameter range is the preset operating speed range, the operating parameters of the booster pump 2 can be detected most directly, facilitating the control of the booster pump 2. Of course, the preset operating parameter range can also be one or more of a preset current range, a preset voltage range, or a preset power range. When the preset operating parameter range is one or more of the preset current range, the preset voltage range, or the preset power range, the rotational speed of the booster pump 2 can be obtained by detecting operating parameters such as the current, voltage, or power of the booster pump 2, and then it can be determined whether the water purification system is in a large-flow, low-noise operating state.

[0065] Further, the water flow parameter detection component 1 can be a pressure detection component. By directly detecting the pressure before the pump with the pressure detection component, the rotational speed of the booster pump 2 is adjusted according to different pressure parameters before the pump to adapt to the water pressure in different users' homes and prevent the occurrence of large noise or water shortage alarms caused by negative pressure before the pump. Of course, the water flow parameter detection component 1 can also be a flow velocity detection component or a flow rate detection component. By collecting the flow velocity or flow rate before the pump, the operating state of the booster pump 2 is known, and then the booster pump 2 can be adjusted to maintain the large-flow, low-noise operating state of the water purification system.

[0066] Further, the first filter element can be, but is not limited to, a reverse osmosis filter element or a fiber membrane filter element.

[0067] In an alternative embodiment of the present invention, when the booster pump 2 operates within the preset operating parameter range (N 最小 <N 实际 <N 最大 ), the noise of the water purification system is less than or equal to the preset noise value, and the purified water output flow rate of the water purification system is greater than or equal to the preset flow rate. In this embodiment, the preset noise value is, but is not limited to, 40 dB, and the preset flow rate is 3 L / min.

[0068] In an alternative embodiment of the present invention, when the water flow parameters detected by the water flow parameter detection component are not within the preset water flow parameter range (M 实际 ≤M 最小 or M 实际 ≥M 最大 ), the booster pump 2 is controlled to be adjusted according to a preset rule, where the preset rule is: controlling the booster pump 2 to be adjusted so that the water flow parameters detected by the water flow parameter detection component 1 approach or are within the preset water flow parameter range (M 最小 <M 实际 <M 最大 or approaching M 最小 <M 实际 <M最大 ) operates according to the operating parameters, so that the booster pump 2 is restored to within the preset operating parameter range or approaches the preset operating parameter range (N 最小 <N 实际 <N 最大 or approaches N 最小 <N 实际 <N 最大 ) runs. Thus, the user can obtain a water use experience with large flow and low noise. At the same time, it can avoid the occurrence of negative pressure in front of the pump caused by water shortage in the water purification system, and can also make full use of the situation where the water flow parameters exceed the preset water flow parameter range, enabling the user to obtain a larger purified water flow and improving the user's water use experience.

[0069] In an alternative embodiment of the present invention, when the water flow parameter detection component 1 adopted is a pressure detection component, the control method includes: when the water pressure parameter detected by the pressure detection component is within the preset water pressure parameter range, controlling the booster pump 2 to operate within the preset operating parameter range; when the water pressure parameter detected by the pressure detection component is not within the preset water pressure parameter range, controlling the booster pump 2 to adjust to an operating parameter at which the water pressure detected by the pressure detection component approaches or is within the preset water pressure parameter range.

[0070] Further, the water pressure parameter detected by the pressure detection component not being within the preset water pressure parameter range includes that the water pressure parameter detected by the pressure detection component is less than or equal to the minimum value of the preset water pressure parameter range and the water pressure parameter detected by the pressure detection component is greater than or equal to the maximum value of the preset water pressure parameter range. When the water pressure parameter detected by the pressure detection component is less than or equal to the minimum value of the preset water pressure parameter range, or the water pressure parameter detected by the pressure detection component is greater than or equal to the maximum value of the preset water pressure parameter range, it is necessary to control the booster pump 2 to adjust to an operating parameter at which the water pressure parameter detected by the pressure detection component approaches or is within the preset water pressure parameter range, so that the user can obtain a water use experience with large flow and low noise. At the same time, it can avoid the occurrence of negative pressure in front of the pump caused by water shortage in the water purification system, and can also utilize the situation where the current water pressure parameter exceeds the preset water pressure parameter range to control the booster pump 2 to increase the rotation speed, enabling the user to obtain a larger purified water flow and improving the user's water use experience.

[0071] In an alternative embodiment of the present invention, as Figure 2 shown, when the preset operating parameter range is the preset operating rotation speed range (N 最小 <N 实际 <N 最大 ), the preset operating rotation speed range can be set to 700 rpm to 800 rpm (i.e., N 最小 is 700 rpm, N 最大 is 800 rpm); the preset water flow parameter range is the preset water pressure parameter range, and the preset water pressure parameter range is 2 psi to 9 psi (i.e., M最小 is 2 psi, M 最大 is 9 psi).

[0072] In this embodiment, as Figure 1 , Figure 2 shown, when the water pressure parameter detected by the pressure detection component is greater than or equal to the maximum value of the preset water pressure parameter range (M 实际 ≥M 最大 ), it is necessary to control the booster pump 2 to increase its operating speed until the booster pump 2 increases from the preset operating speed range to a speed at which the water pressure parameter detected by the pressure detection component decreases to approach or be within the preset water pressure parameter range (M 最小 <M 实际 <M 最大 or approaches M 最小 <M 实际 <M 最大 ), so that the water purification system resumes the operation state of large flow and low noise. To ensure the normal operation of the water purification system, it is necessary to increase the operating speed of the booster pump 2. When the operating speed of the booster pump 2 increases to the speed limit, even if the water pressure parameter detected by the pressure detection component still does not decrease to approach or be within the preset water pressure parameter range, the operating speed of the booster pump 2 will no longer continue to increase, but will maintain at this speed limit for operation. By setting a speed limit for the booster pump 2, it is avoided that the excessive speed of the booster pump 2 causes damage to itself, which plays a role in protecting the booster pump 2 and prolongs the service life of the booster pump 2. Among them, the speed limit of the booster pump 2 can be but is not limited to 1000 rpm.

[0073] Furthermore, as Figure 1 , Figure 2 shown, when the water pressure parameter detected by the pressure detection component is greater than or equal to the maximum value of the preset water pressure parameter range (M 实际 ≥M 最大 ), adjusting the operating speed of the booster pump 2 makes the water pressure parameter detected by the pressure detection component decrease to approach or be within the preset water pressure parameter range (M 最小 <M 实际 <M 最大 or approaches M 最小 <M 实际 <M 最大) Then, control the booster pump 2 to maintain the adjusted operating speed. The above adjustment method is applicable to the situation where the booster pump 2 is finely adjusted or adjusted once to reduce the water pressure parameter detected by the pressure detection component to approach or be within the preset water pressure parameter range. After adjusting the operating speed of the booster pump 2, the operating speed of the booster pump 2 is maintained between 800 rpm and 1000 rpm. When the water pressure parameter is greater than or equal to the maximum value of the preset water pressure parameter range, the water flow can be fully utilized, enabling the user to obtain a larger net water flow rate and enhancing the user's water use experience.

[0074] In this embodiment, as Figure 1 , Figure 2 shown, when the water pressure parameter detected by the pressure detection component is less than or equal to the minimum value (M 实际 ≤M 最小 ) of the preset water pressure parameter range, it is necessary to control the booster pump 2 to reduce the operating speed until the booster pump 2 is reduced from the preset operating speed range to a speed at which the water pressure parameter detected by the pressure detection component increases to approach or be within the preset water pressure parameter range (M 最小 <M 实际 <M 最大 or approaches M 最小 <M 实际 <M 最大 ). The operating speed is maintained so that the water purification system resumes the operation state of large flow and low noise, enabling the user to obtain a large flow and low noise water use experience, and at the same time, it can avoid the situation of pump front negative pressure caused by water shortage in the water purification system. To ensure the normal operation of the water purification system, it is necessary to preset a lower limit of the rotational speed for the booster pump 2. When the operating speed of the booster pump 2 decreases to the rotational speed lower limit, even if the water pressure parameter detected by the pressure detection component still has not increased to approach or be within the preset water pressure parameter range, the operating speed of the booster pump 2 will no longer continue to decrease but will be maintained at this rotational speed lower limit for operation. Among them, the lower limit of the rotational speed of the booster pump 2 can be but is not limited to 300 rpm.

[0075] Furthermore, when the water pressure parameter detected by the pressure detection component is less than or equal to the minimum value (M 实际 ≤M 最小 ) of the preset water pressure parameter range, adjusting the operating speed of the booster pump 2 makes the water pressure parameter detected by the pressure detection component increase to approach or be within the preset water pressure parameter range (M 最小 <M 实际 <M 最大 or approaches M 最小 <M 实际 <M 最大) Then, the booster pump 2 maintains the adjusted operating speed. The above adjustment method is applicable to the situation where the booster pump 2 is finely adjusted or adjusted once to increase the water pressure parameter detected by the pressure detection component to approach or be within the preset water pressure parameter range. After adjusting the operating speed of the booster pump 2, the operating speed of the booster pump 2 is maintained between 300 rpm and 700 rpm. When the water pressure parameter is less than or equal to the minimum value of the preset water pressure parameter range, it can enable users to obtain a large-flow and low-noise water use experience, and at the same time, it can avoid the situation of pump front negative pressure caused by water shortage in the water purification system.

[0076] In an alternative embodiment of the present invention, as Figure 1 , Figure 2 shown, when the water pressure parameter detected by the pressure detection component is greater than or equal to the maximum value (M 实际 ≥M 最大 ) of the preset water pressure parameter range, the operating speed of the booster pump 2 is controlled to increase. When the operating speed of the booster pump 2 increases to the preset maximum operating speed (i.e., the speed upper limit of 1000 rpm), if the water pressure parameter still does not approach the maximum value of the preset water pressure parameter range, the operating speed of the booster pump 2 will no longer continue to increase, but instead, the booster pump 2 is controlled to maintain at this speed of 1000 rpm, or the booster pump 2 is controlled to stop running.

[0077] In an alternative embodiment of the present invention, as Figure 1 , Figure 2 shown, when the water pressure parameter detected by the pressure detection component is less than or equal to the minimum value (M 实际 ≤M 最小 ) of the preset water pressure parameter range, the operating speed of the booster pump 2 is controlled to decrease. When the operating speed of the booster pump 2 decreases to less than the preset minimum operating speed (i.e., the speed lower limit of 300 rpm), if the water pressure parameter still does not approach the minimum value of the preset water pressure parameter range, then the booster pump 2 is controlled to maintain the minimum operating speed of 300 rpm. Since there is a risk that the desalination rate of the first filter element 3 will be unqualified under the condition that the operating speed of the booster pump 2 is less than 300 rpm, it is necessary to control the booster pump 2 to maintain the operating speed of 300 rpm to ensure that the water purification system always maintains a qualified desalination rate. In this embodiment, when the water pressure parameter detected by the pressure detection component is less than the minimum value (M 实际 ≤M 最小 ) of the preset water pressure parameter range, the operating speed of the booster pump 2 continuously decreases to less than the preset minimum operating speed (i.e., the speed lower limit of 300 rpm), and the water pressure parameter detected by the pressure detection component is still less than the minimum value of 2 psi of the preset water pressure parameter range, then it can be determined that the water purification system meets the water shortage condition, and the booster pump 2 is controlled to stop running.

[0078] In another alternative embodiment of the present invention, when the water pressure parameter detected by the pressure detection component is less than or equal to the minimum value (M 实际 ≤M 最小 ) of the preset water pressure parameter range, if after the first preset time t1, the operating speed of the booster pump 2 decreases to be greater than the preset water shortage speed (i.e., the speed is 700 rpm) and the water pressure parameter detected by the pressure detection component is negative pressure, it can be determined that the water purification system meets the water shortage condition, and the operation of the booster pump 2 is controlled to stop. In this embodiment, it may be due to adding other water usage points during the use of the water purification system, resulting in the water pressure before the pump being less than the minimum value of the preset water pressure parameter range, and even the situation of negative pressure before the pump occurs. At this time, the operating speed of the booster pump 2 decreases but is still greater than the preset water shortage speed of 700 rpm. If after the first preset time t1, the water pressure before the pump returns to be greater than the minimum value of the preset water pressure parameter range, the continuous operation of the booster pump 2 can be controlled; if after the first preset time t1, the water pressure parameter detected by the pressure detection component is negative pressure, at this time, it can be determined that the water purification system meets the water shortage condition, and the operation of the booster pump 2 is controlled to stop.

[0079] In another alternative embodiment of the present invention, as Figure 3 shown, when the preset start condition is met, if within the second preset time t2, the operating parameters of the booster pump 2 do not reach the minimum value (N 实际 <N 最小 ) of the preset operating parameter range, it is necessary to determine whether the booster pump 2 fails and cannot reach the preset operating parameter range, and the operation of the booster pump 2 is controlled to stop.

[0080] In an alternative embodiment of the present invention, as Figure 4 shown, the water purification system further includes a second filter element 4. The second filter element 4 is arranged on the upstream water path of the booster pump 2, and the water flow parameter detection component 1 is arranged between the second filter element 4 and the booster pump 2. Among them, the second filter element 4 is a pretreatment filter element, and the pretreatment filter element includes PP cotton and / or carbon fiber and / or granular activated carbon. Before the tap water enters the first filter element 3, the impurities in the tap water are filtered by the second filter element 4.

[0081] Furthermore, as Figure 4 shown, the water purification system further includes a first valve member 5. The first valve member 5 is arranged on the upstream water path of the second filter element 4. The inlet of the first valve member 5 can be connected to a tap water faucet, and the on-off of the water path upstream of the second filter element 4 is controlled by the first valve member 5.

[0082] Furthermore, as Figure 4 shown, the water purification system further includes a third filter element 6. The third filter element 6 is arranged on the downstream water path of the first filter element 3. Among them, the third filter element 6 includes granular activated carbon, and the pure water output by the first filter element 3 is filtered again by the third filter element 6.

[0083] Furthermore, as Figure 4 shown, the water purification system further includes a second valve member 7, which is disposed on the downstream water path of the wastewater outlet 303 of the first filter element 3, and the on-off of the downstream water path of the wastewater outlet 303 of the first filter element 3 is controlled by the second valve member 7.

[0084] In an alternative embodiment of the present invention, as Figure 5 shown, the booster pump 2 is fixedly disposed in the pump chamber 8, and a sound insulation layer 9 is provided on the inner wall of the pump chamber 8, thereby achieving a noise reduction effect. Among them, the sound insulation layer 9 can be, but is not limited to, a damping plate, and the low-frequency noise is improved by the damping plate. Preferably, the damping plate is made of a damping material formed by compounding PET (polyethylene terephthalate) and butyl rubber.

[0085] In an alternative embodiment of the present invention, as Figure 6 、 Figure 7 shown, the booster pump 2 is fixedly disposed on the sheet metal structural member 10. Hoop members 11 are respectively provided in a ring shape on the outer wall of the booster pump 2 and near both ends of the booster pump 2. The hoop members 11 are fixed to the sheet metal structural member 10 by bolts. A shock-absorbing ring is clamped between the outer wall of the hoop member 11 and the outer wall of the booster pump 2, playing a role in shock absorption and noise reduction.

[0086] Furthermore, as Figure 6 、 Figure 7 shown, at least two shock-absorbing blocks 12 are fixedly disposed inside the pump chamber 8. Both ends of the sheet metal structural member 10 are respectively inserted into the shock-absorbing blocks 12 at corresponding positions, so that a certain gap is left between the bottom surface of the sheet metal structural member 10 and the inner wall of the pump chamber 8, further playing a role in shock absorption and noise reduction.

[0087] Furthermore, as Figures 6 to 10 shown, at least one buffer member 13 is further provided between the booster pump 2 and the sheet metal structural member 10; among them, a plurality of convex portions 1301 are vertically and spaced apart on the outer wall of the buffer member 13, and the convex portions 1301 are in a circular ring structure arranged along the circumferential direction of the buffer member 13. A buffer cavity 1302 is formed inside the buffer member 13, and circular ring-shaped concave portions 1303 are respectively formed on the inner wall of the buffer cavity 1302 and at positions axially opposite to the respective convex portions 1301, further playing a role in shock absorption and noise reduction through the buffer member 13.

[0088] The booster pump 2 in the present invention, through the cooperation of the shock-absorbing ring, the shock-absorbing blocks 12 and the buffer member 13, achieves a triple shock-absorbing effect, fully reducing the noise generated during the operation of the water purification system and ensuring a good user experience.

[0089] The characteristics and advantages of the control method of the water purification system of the present invention are:

[0090] 1. For the control method of this water purification system, when starting, the water pump is controlled to start at a preset speed, and then the parameters before the water pump are detected, and the speed of the water pump is adjusted according to the detected parameters to provide users with a water purification experience of large flow and low noise.

[0091] 2. For the control method of this water purification system, during the use of the water purification system, when the water flow parameters detected by the water flow parameter detection component 1 are within the preset water flow parameter range, the booster pump 2 is controlled to operate within the preset operating parameter range to maintain the operation state of the water purification system with both large flow and low noise; when the water flow parameters detected by the water flow parameter detection component 1 are not within the preset water flow parameter range, the booster pump 2 is controlled to adjust to an operating parameter that makes the water flow parameters detected by the water flow parameter detection component approach or be within the preset water flow parameter range, so that users can obtain a water use experience of large flow and low noise. At the same time, it can avoid the situation of negative pressure before the pump caused by water shortage in the water purification system, and can also utilize the situation where the current water pressure parameter exceeds the preset water pressure parameter range to enable users to obtain a larger water purification flow rate and improve the user's water use experience.

[0092] The above are only illustrative specific embodiments of the present invention and are not intended to limit the scope of the present invention. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A water purification system control method, characterized in that, The water purification system includes: a first filter element having a raw water inlet, a purified water outlet, and a wastewater outlet; a booster pump disposed upstream of the raw water inlet, the booster pump being capable of driving water to enter the first filter element from the raw water inlet; a water flow parameter detection component disposed upstream of the booster pump, the water flow parameter detection component being a pressure detection component; The control method includes: when a preset start condition is satisfied, controlling the operating parameters of the booster pump to a preset operating parameter range; when the water flow parameters detected by the water flow parameter detection component are within a preset water flow parameter range, controlling the booster pump to operate within the preset operating parameter range, including: when the water pressure parameter detected by the pressure detection component is within a preset water pressure parameter range, controlling the booster pump to operate within the preset operating parameter range; when the water flow parameters detected by the water flow parameter detection component are not within the preset water flow parameter range, controlling the booster pump to be adjusted according to a preset rule, including: when the water pressure parameter detected by the pressure detection component is not within the preset water pressure parameter range, controlling the booster pump to be adjusted to an operating parameter at which the water pressure parameter detected by the pressure detection component approaches or is within the preset water pressure parameter range, wherein when the water pressure parameter detected by the pressure detection component is less than or equal to the minimum value of the preset water pressure parameter range, or the water pressure parameter detected by the pressure detection component is greater than or equal to the maximum value of the preset water pressure parameter range, controlling the booster pump to be adjusted to an operating parameter at which the water pressure parameter detected by the pressure detection component approaches or is within the preset water pressure parameter range; when the water pressure parameter detected by the pressure detection component is greater than or equal to the maximum value of the preset water pressure parameter range, controlling the operating speed of the booster pump to increase from a preset operating speed range to an operating speed at which the water pressure parameter detected by the pressure detection component decreases to approach or is within the preset water pressure parameter range; when the water pressure parameter detected by the pressure detection component is less than or equal to the minimum value of the preset water pressure parameter range, controlling the operating speed of the booster pump to decrease from a preset operating speed range to an operating speed at which the water pressure parameter detected by the pressure detection component increases to approach or is within the preset water pressure parameter range.

2. The water purification system control method according to claim 1, characterized in that when the water flow parameters detected by the water flow parameter detection component are not within the preset water flow parameter range, controlling the booster pump to be adjusted to an operating parameter at which the water flow parameters detected by the water flow parameter detection component approach or are within the preset water flow parameter range.

3. The water purification system control method according to claim 1, characterized in that, The preset operating parameter range includes at least one of the following parameter ranges: a preset current range, a preset voltage range, a preset operating speed range, or a preset power range.

4. The water purification system control method according to claim 1, characterized in that, The first filter element is a reverse osmosis filter element or a fiber membrane filter element.

5. The water purification system control method according to claim 1, characterized in that When the booster pump operates within the preset operating parameter range, the noise of the water purification system is less than or equal to a preset noise value, and the purified water output flow rate of the water purification system is greater than or equal to a preset flow rate.

6. The control method of the water purification system according to claim 1, characterized in that, When the water pressure parameter detected by the pressure detection component is greater than or equal to the maximum value of the preset water pressure parameter range, adjust the operating speed of the booster pump so that the water pressure parameter detected by the pressure detection component decreases to approach or be within the preset water pressure parameter range, and then the booster pump maintains the adjusted operating speed.

7. The water purification system control method according to claim 1, characterized in that When the water pressure parameter detected by the pressure detection component is less than or equal to the minimum value of the preset water pressure parameter range, adjust the operating speed of the booster pump so that the water pressure parameter detected by the pressure detection component increases to approach or be within the preset water pressure parameter range, and then the booster pump maintains the adjusted operating speed.

8. The water purification system control method according to claim 2, wherein The preset operating parameter range is the preset operating speed range, and the preset operating speed range is from 700 rpm to 800 rpm; the preset water flow parameter range is the preset water pressure parameter range, and the preset water pressure parameter range is from 2 psi to 9 psi.

9. The control method of the water purification system according to claim 1, characterized in that The water purification system further includes a second filter element, the second filter element is arranged upstream of the booster pump, and the water flow parameter detection component is arranged between the second filter element and the booster pump.

10. The water purification system control method according to claim 9, wherein, The second filter element is a pretreatment filter element, and the pretreatment filter element includes PP cotton and / or carbon fiber and / or granular activated carbon.

11. The water purification system control method according to claim 1, characterized in that, The preset start condition includes the obtained water use signal of the user.

12. The control method of the water purification system according to claim 1, characterized in that, When the water pressure parameter detected by the pressure detection component is greater than or equal to the maximum value of the preset water pressure parameter range, control the operating speed of the booster pump to increase. When the operating speed of the booster pump increases to the preset maximum operating speed, if the water pressure parameter still does not approach the maximum value of the preset water pressure parameter range, then control the booster pump to maintain the maximum operating speed or control the booster pump to stop operating.

13. The water purification system control method according to claim 1, wherein, When the water pressure parameter detected by the pressure detection component is less than or equal to the minimum value of the preset water pressure parameter range, control the operating speed of the booster pump to decrease. When the operating speed of the booster pump decreases to less than the preset minimum operating speed, if the water pressure parameter still does not approach the minimum value of the preset water pressure parameter range, then control the booster pump to maintain the minimum operating speed or control the booster pump to stop operating.

14. The water purification system control method according to claim 1, characterized in that, When the water pressure parameter detected by the pressure detection component is less than or equal to the minimum value of the preset water pressure parameter range, if after the first preset time, the operating speed of the booster pump decreases to be greater than the preset water shortage speed and the water pressure parameter detected by the pressure detection component is negative pressure, it is determined that the water purification system meets the water shortage condition, and control the booster pump to stop operating.

15. The control method of the water purification system according to claim 1, characterized in that When the preset start condition is satisfied, if within the second preset time, the operating parameters of the booster pump do not reach the minimum value of the preset operating parameter range, then control the booster pump to stop operating.

Images