CN111348724B - Control method of pressure regulating pump of water purifier and water purifier - Google Patents

Abstract

The invention discloses a control method for a pressure regulating pump of a water purifier and a water purifier. Original voltage value; the water purifier obtains the actual amount of pure water it currently produces. When the actual amount of pure water reaches the preset amount of pure water, the water purifier is based on the TDS value of the original water, the temperature value of the original water, the original voltage value of the pressure regulating pump and the The actual pure water produced by the water purifier, calculate the theoretical voltage value that needs to be adjusted by the pressure regulating pump, and adjust the original voltage value of the pressure regulating pump to the theoretical voltage value, so that the raw water after the water pressure is adjusted by the pressure regulating pump has a suitable value. the water pressure value. The present invention reduces the noise of the water purifier and prolongs the service life of the reverse osmosis membrane unit in the water purifier through the pressure regulating pump adaptively adjusting its own voltage value according to the water quality conditions, water temperature and other parameters in different regions.

Description

A kind of control method of pressure regulating pump of water purifier and water purifier

technical field

The invention belongs to the field of water purifiers, and in particular relates to a control method for a pressure regulating pump of a water purifier and a water purifier.

Background technique

Most reverse osmosis membrane water purifiers use a DC pressure regulating pump to increase the water pressure in front of the reverse osmosis membrane, so that the water can pass through the reverse osmosis membrane smoothly, so as to filter water. However, due to the different water quality in different regions, in the case of using a constant pump voltage, in areas with better water quality, the pre-membrane pressure of the reverse osmosis membrane will be too large, causing noise and reducing the service life of the reverse osmosis membrane. Raw water with low temperature and high pressure will cause risks such as bursting of water pipes and shortening of reverse osmosis membrane life.

The present invention has been made in view of this.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and to provide a control method and a water purifier for a pressure regulating pump of a water purifier. The raw water pressure is adjusted to an appropriate value to avoid excessive pressure in front of the reverse osmosis membrane and shorten the service life of the reverse osmosis membrane. At the same time, the control method enables the water purifier to adjust the pressure of the pump according to the water quality conditions and water temperature conditions in different regions, so as to achieve the purpose of reducing the noise and power consumption of the whole machine and prolonging the life of the reverse osmosis membrane.

In order to solve the above-mentioned technical problems, the basic conception of the technical scheme adopted in the present invention is:

A control method for a pressure regulating pump of a water purifier, comprising the following steps:

After the water purifier starts to produce water, obtain the TDS value of the raw water upstream of the pressure regulating pump, the water temperature value of the raw water and the original voltage value of the pressure regulating pump;

The water purifier obtains the actual amount of pure water it currently produces. When the actual amount of pure water reaches the preset amount of pure water, the water purifier will generate the original water TDS value, the original water temperature value, the original voltage value of the pressure regulating pump and the According to the actual pure water volume, calculate the theoretical voltage value that needs to be adjusted by the pressure regulating pump, and adjust the original voltage value of the pressure regulating pump to the theoretical voltage value, so that the raw water after the water pressure adjustment by the pressure regulating pump has a suitable water pressure value .

Further, after the water purifier starts to produce water, the pressure regulating pump works with the original voltage value. When the actual pure water volume produced by the water purifier reaches the preset pure water volume, the water purifier will adjust the original voltage value of the pressure regulating pump. Adjust to the theoretical voltage value;

Preferably, when the water purifier detects that the actual amount of pure water it produces reaches the preset amount of pure water, the water purifier stops producing water; after the water purifier adjusts the original voltage value of the pressure regulating pump to the theoretical voltage value, The water purifier restarts water production, and the pressure regulating pump runs at the theoretical voltage value.

Further, the water purifier obtains the theoretical voltage value that the pressure regulating pump needs to adjust according to the original voltage value of the pressure regulating pump:

V=V0×A, where V0 is the original voltage value, and A is the voltage correction coefficient.

Further, the voltage correction factor is calculated by the following formula:

A=X+T+L, where X is the voltage correction reference value, T is the first voltage correction value, and L is the second voltage correction value.

Further, a plurality of different TDS range intervals are preset in the water purifier, each TDS range interval corresponds to a different voltage correction reference value, and the voltage correction reference value is preset in the water purifier; wherein the first TDS range interval is TDS<200mg/L, the corresponding voltage correction reference value is 60%; the second TDS range interval is 200mg/L≤TDS<300mg/L, the corresponding voltage correction reference value is 70%; the third TDS range interval is 300mg/ L≤TDS<400mg/L, the corresponding voltage correction reference value is 80%; the fourth TDS range interval is 400mg/L≤TDS<500mg/L, the corresponding voltage correction reference value is 90%; the fifth TDS range interval is TDS≥500mg/L, the corresponding voltage correction reference value is 100%; after the water purifier starts to produce water, according to the detected TDS value of raw water, determine the TDS range to which it belongs, and obtain the corresponding voltage correction reference value.

Further, after the water purifier starts to produce water, the first voltage correction value is obtained according to the detected raw water temperature value:

T=[(T0-25)/100]×100%, where T0 is the water temperature value.

Further, when the actual pure water volume produced by the water purifier reaches the preset pure water volume, the second voltage correction value is obtained according to the actual pure water volume:

L=[(7000-L0)/1050]×100%, where L0 is the amount of pure water.

The purpose of the present invention is also to provide a water purifier with any one of the above control methods, including a water purifying water pipe through which the water supply flow flows, and the water purifying water pipe is sequentially arranged along the flow direction of the water flow:

The temperature detection unit is used to detect the raw water temperature value;

TDS detection unit, used to detect the TDS value of raw water;

Pressure regulating pump, used to adjust the water pressure of raw water;

The reverse osmosis membrane unit is used to filter the raw water after pressure regulation;

The flow detection unit is used to obtain the actual pure water volume produced by the water purifier.

Further, the water purifier includes a voltage adjustment module, and the voltage adjustment module is electrically connected with the pressure regulating pump to adjust the voltage value of the pressure regulating pump.

Further, the water purifier includes a control unit, and the control unit is used to control the normal operation of the temperature detection unit, the TDS detection unit, the pressure regulating pump, the reverse osmosis detection unit and the flow detection unit, and to control the start and stop of the water purifier; the control unit It is also used to calculate the theoretical voltage value to be adjusted by the pressure regulating pump, and control the voltage adjustment module to adjust the original voltage value of the pressure regulating pump to the theoretical voltage value.

After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

1. In the present invention, the water purifier can adjust the voltage of the pump, so that the raw water has a suitable water pressure before entering the reverse osmosis membrane unit, so as to reduce the noise and power consumption of the whole machine.

2. In the present invention, the water purifier can adjust the voltage of the pressure regulating pump according to the water quality and water temperature conditions in different regions, so as to adjust the water pressure in front of the reverse osmosis membrane, so that the reverse osmosis membrane can filter the raw water smoothly. , while extending the service life of the reverse osmosis membrane.

3. In the present invention, the water purifier can adapt to the water quality in different regions, and adjust the water pressure before the membrane of the reverse osmosis membrane unit adaptively, so as to avoid excessive pressure before the membrane and excessive internal pressure of the machine. The machine exploded.

The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Description of drawings

The accompanying drawings, as a part of the present invention, are used to provide further understanding of the present invention, and the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings in the following description are only some embodiments, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort. In the attached image:

Fig. 1 is the schematic diagram of the water purification process of the water purifier of the present invention;

FIG. 2 is a flow chart of a method for self-regulating water pressure of a water purifier in an embodiment of the present invention.

In the figure: 1-purifying water pipe; 2-water inlet; 3-water outlet; 4-first filter unit; 5-water inlet solenoid valve; 6-temperature detection unit; 7-TDS detection unit; 8-pressure regulating pump ; 9-reverse osmosis membrane unit; 10-flow detection unit; 11-second filter unit; 12-concentrated water pipe.

It should be noted that these drawings and written descriptions are not intended to limit the scope of the present invention in any way, but to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used to illustrate the present invention , but are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limiting the invention.

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; it can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

As shown in FIG. 1 to FIG. 2 , the present invention provides a method for controlling a pressure regulating pump of a water purifier and a water purifier. The water purifier includes a water purifying water pipe 1 through which a water supply flow flows. A temperature detection unit 6 , a TDS detection unit 7 , a pressure regulating pump 8 , a reverse osmosis membrane unit 9 and a flow detection unit 10 are sequentially arranged along the water flow direction. The water purification water pipe 1 includes a water inlet 2 and a water outlet 3, and the external water source is communicated with the water inlet 2 of the water purification water pipe 1 to supply water for the water purifier. After the water purifier starts to produce water, the raw water provided by the external water source passes through the water inlet. 2 Enter the water purification pipe 1. At this time, the voltage of the pressure regulating pump 8 is the original voltage value. The pressure regulating pump 8 works at the original voltage value, and the pressure of the raw water entering the pressure regulating pump 8 is adjusted, so that the water pressure of the raw water changes. The raw water can pass through the reverse osmosis membrane unit 9 smoothly. During the water production process of the water purifier, the temperature detection unit 6 in the water purifier obtains the water temperature value of the raw water, the TDS detection unit 7 detects the TDS value in the raw water, and the flow detection unit 10 obtains the actual amount of pure water produced by the water purifier, The control unit of the water purifier calculates the theoretical voltage value that the pressure regulating pump 8 needs to reach according to the raw water temperature value, the TDS value and the actual pure water volume, and adjusts the original voltage value of the pressure regulating pump 8 to the theoretical voltage value, so that the pressure regulating pump 8 needs to reach the theoretical voltage value. 8 Operates at the theoretical voltage value. When the water purifier is used in different regions, due to the difference in the quality or temperature of the raw water in the region, when the pressure regulating pump 8 of the water purifier works at a constant voltage, the pre-membrane pressure of the reverse osmosis membrane unit 9 occurs in the region with better water quality. If it is too large, the noise will be loud, the service life of the reverse osmosis membrane unit 9 will be shortened, and even in serious cases, the risk of bursting the water purifier water pipe 1 will occur; using the control method of the pressure regulating pump 8 in the present invention can make The water purifier adaptively adjusts the working pressure of the pressure regulating pump 8 according to the water temperature value and water quality in different regions, so that the water purifier can adapt to the use in different regions by changing the working voltage of the pressure regulating pump 8 and expand the water purifier. The scope of use can reduce the use noise of the water purifier and prolong the service life of the reverse osmosis membrane unit 9 in the water purifier.

Example 1

As shown in FIG. 1 , in this embodiment, a method for controlling a pressure regulating pump of a water purifier is provided. The control method includes the following steps. Step 1: After the water purifier starts to produce water, obtain the upstream pressure of the pressure regulating pump 8 . The raw water TDS value, the raw water temperature value and the original voltage value of the pressure regulating pump 8; Step 2: The water purifier obtains the actual amount of pure water currently produced. When the actual pure water amount reaches the preset pure water amount, the water purifier Raw water TDS value, raw water temperature value, the original voltage value of the pressure regulating pump 8 and the actual pure water produced by the water purifier, calculate the theoretical voltage value that the pressure regulating pump 8 needs to adjust, and adjust the original voltage value of the pressure regulating pump 8 It is a theoretical voltage value, so that the raw water after the water pressure is adjusted by the pressure regulating pump 8 has an appropriate water pressure value.

In this embodiment, after the water purifier starts to produce water, the pressure regulating pump 8 works at the original voltage value, and when the actual pure water amount produced by the water purifier reaches the preset pure water amount, the water purifier will adjust the pressure regulating pump The original voltage value of 8 is adjusted to the theoretical voltage value. When the water purifier detects that the actual amount of pure water it produces reaches the preset amount of pure water, the water purifier stops producing water; when the water purifier adjusts the original voltage value of the pressure regulating pump 8 to the theoretical voltage value, the water purifier stops producing water. The water purifier restarts water production, and the pressure regulating pump runs at the theoretical voltage value; or, the water purifier can adjust the voltage value of the pressure regulating pump 8 without stopping, so that the voltage value of the pressure regulating pump 8 is adjusted to the theoretical voltage value, and the theoretical voltage value is adjusted. voltage value to work.

In this embodiment, in step 1, after the water purifier starts to produce water, the TDS detection unit 7 detects the raw water and obtains the TDS value of the raw water. The TDS value is the total solid content dissolved in the raw water, which is preset in the water purifier. There are multiple TDS range intervals, each TDS range interval corresponds to a different voltage correction reference value, the voltage correction reference value is denoted as X, and the voltage correction reference value is preset in the water purifier; wherein the first TDS range interval is TDS< 200mg/L, the corresponding reference value is 60%; the second TDS range is 200mg/L≤TDS<300mg/L, the corresponding reference value is 70%; the third TDS range is 300mg/L≤TDS<400mg/ L, the corresponding reference value is 80%; the fourth TDS range interval is 400mg/L≤TDS<500mg/L, the corresponding reference value is 90%; the fifth TDS range interval is TDS≥500mg/L, the corresponding reference value is 100%. After the TDS detection unit 7 obtains the TDS value of the raw water, the water purifier will determine the TDS range interval to which the TDS value of the raw water detected by the TDS detection unit 7 belongs, obtain the corresponding voltage correction reference value, and adjust the corresponding voltage to the reference value. recorded in the water purifier.

In this embodiment, in step 1, after the water purifier starts to produce water, the temperature detection unit 6 in the water purifier detects the water temperature value of the raw water, and the water purifier will calculate the first voltage correction value according to the water temperature value of the raw water. The relationship between the voltage correction value and the raw water temperature value is as follows, and the relationship between the first voltage correction value and the raw water temperature value is preset in the water purifier:

T=[(T0-25)/100]×100%; wherein, T is the first voltage correction value, and T0 is the raw water temperature value.

In this embodiment, in step 2, after the water purifier starts to produce water, a preset amount of pure water is set in the water purifier. When the water purifier detects that the actual amount of pure water produced by the water purifier reaches the preset amount of pure water Then, the water purifier will calculate the second voltage correction value according to the actual pure water volume produced by the water purifier. The relationship between the second voltage correction value and the actual pure water volume is as follows, the second voltage correction value and the actual pure water The relationship between the quantities is preset in the water purifier:

L=[(7000-L0)/1050]×100%; wherein L is the second voltage correction value, and L0 is the actual amount of pure water.

In this embodiment, in step 2, after the water purifier obtains the voltage correction reference value, the first voltage correction value and the second voltage correction value, the three are summed to calculate the voltage correction coefficient, and the voltage correction coefficient is given by the following formula Calculated; the relationship between the voltage correction coefficient and the voltage correction reference value, the first voltage correction value, and the second voltage correction value is preset in the water purifier:

A=X+T+L; where A is the voltage correction coefficient.

In this embodiment, in step 2, the water purifier calculates the theoretical voltage value that the pressure regulating pump 8 needs to reach according to the voltage correction coefficient and the original voltage value of the pressure regulating pump 8, and the theoretical voltage value is calculated by the following formula: The relationship between the theoretical voltage value and the original voltage value is preset in the water purifier:

V=V0×A; where V is the theoretical voltage value, and V0 is the original voltage value.

In this embodiment, in step 2, after calculating the theoretical voltage value of the pressure regulating pump 8, the water purifier will control the pressure regulating pump 8 to adjust the voltage value, adjust its original voltage value to the theoretical voltage value, and use the theoretical The voltage value work continues to make water. After the voltage of the pressure regulating pump 8 is adjusted to the theoretical voltage, the water pressure of the corresponding raw water after being regulated by the pressure regulating pump 8 will also change, so that the raw water can obtain an appropriate water pressure. When the raw water passes through the reverse osmosis membrane unit 9, it can be It has the ability to pass through the reverse osmosis membrane unit 9, and ensures that the pre-membrane pressure of the reverse osmosis membrane unit 9 will not be too large, shortening the service life of the reverse osmosis membrane unit 9; The noise can be reduced, and the water pipe burst caused by the unsuitable water pressure of the water purification water pipe 1 can be avoided, thereby causing loss of life and property to users.

Embodiment 2

As shown in FIG. 2 , in this embodiment, the water purifier includes a water purifying water pipe 1, and the two ends of the water pipe are a water inlet 2 and a water outlet 3 respectively. A filter unit 4 , a water inlet solenoid valve 5 , a temperature detection unit 6 , a TDS detection unit 7 , a pressure regulating pump 8 , a reverse osmosis membrane unit 9 , a flow detection unit 10 and a second filter unit 11 . The reverse osmosis membrane unit 9 is connected with a concentrated water pipe 12 , and the concentrated water produced after being processed by the reverse osmosis membrane unit 9 flows out through the concentrated water pipe 12 . The water treated by the reverse osmosis membrane unit 9 is treated by the second filter unit 11 and then discharged through the water outlet 3 to form pure water for human use; the water purifier is provided with a control unit inside, and the control unit is used to control The normal operation of each unit in the water purifier.

In this embodiment, the water inlet side of the first filter unit 4 is connected to the water inlet 2 of the water purification water pipe 1, and the external water source supplies the raw water to the water purification water pipe 1. The raw water first passes through the first filtering unit 4, and the control unit The first filtering unit 4 is controlled to perform preliminary filtration on the raw water, and the large particle pollutants, chemical pollutants, etc. in the raw water are filtered and removed.

In this embodiment, the water inlet solenoid valve 5 is opened, and the raw water filtered by the first filter unit 4 enters the pressure regulating pump 8 for pressure regulation, so that the raw water can obtain sufficient water pressure and smoothly pass through the reverse osmosis membrane. Unit 9. A TDS detection unit 7 and a temperature detection unit 6 are arranged between the water inlet solenoid valve 5 and the pressure regulating pump 8 . During the process of the raw water flowing into the pressure regulating pump 8 through the water inlet solenoid valve 5, the TDS detection unit 7 and the temperature detection unit 6 determine the TDS value of the raw water on the component side and the water temperature value of the raw water.

In this embodiment, the TDS detection unit 7 is a TDS probe, the control unit controls the water inlet solenoid valve 5 to open, the raw water enters the pressure regulating pump 8, and the control unit of the water purifier will control the TDS detection unit 7 to detect the TDS value of the raw water, and clean the water. A plurality of TDS range intervals are preset in the control unit of the water appliance, and different TDS range intervals correspond to different voltage correction reference values X. The TDS range interval includes: the first TDS range interval is TDS<200mg/L, and the corresponding voltage correction reference value is 60%; the second TDS range interval is 200mg/L≤TDS<300mg/L, and the corresponding voltage correction reference value value is 70%; the third TDS range is 300mg/L≤TDS<400mg/L, and the corresponding voltage correction reference value is 80%; the fourth TDS range is 400mg/L≤TDS<500mg/L, which corresponds to The voltage correction reference value is 90%; the fifth TDS range interval is TDS≥500mg/L, and the corresponding voltage correction reference value is 100%. The control unit of the water purifier will, according to the TDS value of the raw water detected by the TDS detection unit 7, determine the TDS range to which it belongs, and determine the corresponding voltage correction reference value.

In this embodiment, the control unit of the water purifier will control the temperature detection unit 6 to detect the water temperature value of the raw water. After the temperature detection unit 6 obtains the raw water temperature value, the control unit will calculate the first corrected voltage value T according to the raw water temperature value. , the relationship between the first corrected voltage value and the raw water temperature value is preset in the control unit.

In this embodiment, after the raw water enters the pressure regulating pump 8, the pressure regulating pump 8 operates at a constant original voltage value to adjust the raw water to a certain water pressure, and the raw water enters the reverse osmosis membrane unit 9 for filtration. The reverse osmosis membrane The unit 9 can completely retain the pollutants that are not filtered and removed by the first filter unit 4 .

In this embodiment, the flow detection unit 10 is arranged downstream of the reverse osmosis membrane unit 9, and the flow detection unit 10 is a flow meter. After the raw water is filtered by the reverse osmosis membrane unit 9, the control unit will control the flow detection unit 10 to detect purified water When the actual pure water volume produced by the water purifier reaches the preset pure water volume, the water purifier calculates the second voltage correction value, the second voltage correction value and the pure water volume according to the actual pure water volume The relationship between them is preset in the control unit. The preset pure water amount is preset in the water purifier.

In this embodiment, the concentrated water generated after being filtered by the reverse osmosis membrane unit 9 is discharged through the concentrated water pipe 12; the pure water generated after being filtered by the reverse osmosis membrane unit 9 enters the second filtering unit 11 for filtering, and the second filtering unit 11 can Remove chlorine and odors in pure water and change the taste of pure water.

In this embodiment, after obtaining the voltage correction reference value, the first voltage correction value and the second voltage correction value, the control unit will calculate the voltage correction coefficient, the voltage correction coefficient and the voltage correction reference value, the first voltage correction value The calculation relationship with the second voltage correction value is preset in the control unit.

In this embodiment, after obtaining the voltage correction coefficient, the control unit will calculate the theoretical voltage value of the pressure regulating pump 8 according to the original voltage value of the pressure regulating pump 8, and the difference between the theoretical voltage value and the original voltage value and the voltage correction coefficient The relationship is preset in the control unit.

In this embodiment, the water purifier includes a voltage adjustment module for adjusting the voltage of the pressure regulating pump 8, and the voltage adjustment module is electrically connected to the pressure regulating pump 8. After the control unit obtains the theoretical voltage value of the pressure regulating pump 8, the control unit will The control voltage adjustment module adjusts the voltage of the pressure regulating pump 8 to adjust the original voltage value of the pressure regulating pump 8 to the theoretical voltage value, so that the raw water passing through the pressure regulating pump 8 can obtain a suitable water pressure, avoiding the membrane of the reverse osmosis membrane unit 9. If the front water pressure is too high, the service life of the reverse osmosis membrane unit 9 will be shortened, the noise of the water purifier will be too high, or even the water purifying water pipe 1 will burst.

In this embodiment, the voltage adjustment module can adaptively adjust the voltage of the pressure regulating pump under the control of the control unit, so that when the water purifier performs water purification work in different regions, it can be adjusted according to the water quality and water temperature in different regions. , intelligently adjust the voltage of the pressure regulating pump 8, so that the raw water pressure-regulated by the pressure regulating pump 8 can reach a suitable water pressure, ensuring that when the raw water passes through the reverse osmosis membrane unit 9, not only can it pass through the reverse osmosis membrane unit 9 smoothly, At the same time, it can ensure that the water pressure is suitable, and the pre-membrane pressure of the reverse osmosis membrane unit 9 will not be too high and the life of the membrane will not be shortened.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Within the scope of the technical solution of the present invention, personnel can make some changes or modifications to equivalent examples of equivalent changes by using the above-mentioned technical content, but any content that does not depart from the technical solution of the present invention is based on the technical solution of the present invention. Substantially any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the solutions of the present invention.

Claims (6)

1. a control method of a water purifier pressure regulating pump, is characterized in that, comprises the steps: After the water purifier starts to produce water, obtain the TDS value of the raw water upstream of the pressure regulating pump, the water temperature value of the raw water and the original voltage value of the pressure regulating pump; The water purifier obtains the actual amount of pure water it currently produces. When the actual amount of pure water reaches the preset amount of pure water, the water purifier will generate the original water TDS value, the original water temperature value, the original voltage value of the pressure regulating pump and the According to the actual pure water volume, calculate the theoretical voltage value that needs to be adjusted by the pressure regulating pump, and adjust the original voltage value of the pressure regulating pump to the theoretical voltage value, so that the raw water after the water pressure adjustment by the pressure regulating pump has a suitable water pressure value ; The water purifier obtains the theoretical voltage value that the pressure regulating pump needs to adjust according to the original voltage value of the pressure regulating pump: V=V0×A, where V0 is the original voltage value, and A is the voltage correction coefficient; The voltage correction coefficient is calculated and obtained by the following formula: A=X+T+L, where X is the voltage correction reference value, T is the first voltage correction value, and L is the second voltage correction value; A plurality of different TDS range intervals are preset in the water purifier, each TDS range interval corresponds to a different voltage correction reference value, and the voltage correction reference value is preset in the water purifier; wherein the first TDS range interval is TDS< 200mg/L, the corresponding voltage correction reference value is 60%; the second TDS range is 200mg/L≤TDS<300mg/L, the corresponding voltage correction reference value is 70%; the third TDS range is 300mg/L≤ TDS<400mg/L, the corresponding voltage correction reference value is 80%; the fourth TDS range interval is 400mg/L≤TDS<500mg/L, the corresponding voltage correction reference value is 90%; the fifth TDS range interval is TDS≥ 500mg/L, the corresponding voltage correction reference value is 100%; after the water purifier starts to produce water, according to the detected TDS value of raw water, determine the TDS range to which it belongs, and obtain the corresponding voltage correction reference value; After the water purifier starts to produce water, the first voltage correction value is obtained according to the detected raw water temperature value: T=[(T0-25)/100]×100%, where T0 is the water temperature value; When the actual amount of pure water produced by the water purifier reaches the preset amount of pure water, the second voltage correction value is obtained according to the actual amount of pure water: L=[(7000-L0)/1050]×100%, where L0 is pure water quantity. 2. The control method of a water purifier pressure regulating pump according to claim 1, characterized in that: after the water purifier starts to produce water, the pressure regulating pump works with the original voltage value, and the actual voltage generated by the water purifier is waited for. When the pure water volume reaches the preset pure water volume, the water purifier adjusts the original voltage value of the pressure regulating pump to the theoretical voltage value. 3. The control method of a water purifier pressure regulating pump according to claim 2, characterized in that: when the water purifier detects that the actual amount of pure water it produces reaches a preset amount of pure water, the water purifier stops Water production; when the water purifier adjusts the original voltage value of the pressure regulating pump to the theoretical voltage value, the water purifier restarts water production, and the pressure regulating pump runs at the theoretical voltage value. 4. The control method of a water purifier pressure regulating pump according to any one of claims 1 to 3, wherein: the water purifying water pipe of the water purifier is sequentially provided with: The temperature detection unit is used to detect the raw water temperature value; TDS detection unit, used to detect the TDS value of raw water; Pressure regulating pump, used to adjust the water pressure of raw water; The reverse osmosis membrane unit is used to filter the raw water after pressure regulation; And flow detection unit, used to obtain the actual pure water volume produced by the water purifier. 5 . The method for controlling a pressure regulating pump of a water purifier according to claim 4 , wherein the water purifier comprises a voltage regulating module, and the voltage regulating module is electrically connected with the pressure regulating pump to adjust the pressure regulating pump 5 . voltage value. 6 . The method for controlling a pressure regulating pump of a water purifier according to claim 4 , wherein the water purifier comprises a control unit, and the control unit is used to control the temperature detection unit, the TDS detection unit, and the pressure regulating pump 6 . , the normal operation of the reverse osmosis detection unit and the flow detection unit, and control the start and stop of the water purifier; the control unit is also used to calculate the theoretical voltage value that the pressure regulating pump needs to adjust, and control the voltage adjustment module to adjust the original voltage of the pressure regulating pump. The value is adjusted to the theoretical voltage value.

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