CN114656009A - Water purifier and control method thereof - Google Patents

Abstract

The invention provides a water purifier and a control method of the water purifier. The water purifier comprises a main water pipeline, wherein a booster pump and a reverse osmosis filter element are arranged on the main water pipeline, and the water purifier further comprises a water storage device which comprises a power cavity and a water storage cavity. The water storage cavity is communicated with a pure water port of the reverse osmosis filter element through a water inlet pipeline, and is also communicated with a raw water port of the reverse osmosis filter element through a water outlet pipeline. The water purifier also comprises a controller, which is used for controlling the booster pump to start automatically or according to a first electric signal from the water storage starting control device when the water purifier is in a standby state; and controlling the booster pump to stop working automatically or according to a second electric signal from the water storage end control device. This purifier can reduce the TDS value of the first cup of water that the user was next time connecing and is got, can also avoid reverse osmosis filter core bacterial growing. The water purifier has a simple water path and small water leakage risk; the control logic is also relatively simple correspondingly and has high reliability.

Description

Water purifier and control method thereof

Technical Field

The invention relates to the technical field of water purification, in particular to a water purifier and a control method of the water purifier.

Background

With the pursuit of the public for quality of life, the water quality is getting more attention. Reverse osmosis water purifiers are becoming more popular because of the fresher, more sanitary, and safer purified water produced by the reverse osmosis water purifiers.

The raw water has higher TDS (total dissolved solids) more, and the reverse osmosis filter core can block a large amount of ions in the raw water before the osmotic membrane under the effect of booster pump, and makes the TDS of the water through the osmotic membrane accord with the standard of straight drinking water. However, a small amount of concentrated water still remains in the reverse osmosis filter element after water preparation is finished. After long-time shutdown, according to the principle that ions are diffused from high-concentration solution to low-concentration solution, the ions in the concentrated water in front of the membrane can be diffused into the directly drinking water purified behind the membrane, so that the purified directly drinking water is polluted. When the water is taken next time, the polluted direct drinking water can be mixed with new direct drinking water to flow out together, so that the TDS of the first section of water taken by the user is higher than the standard value.

In order to solve this problem, it is a prior art practice to provide a return water path between the pure water port of the reverse osmosis filter element and the water inlet of the booster pump, and a plurality of water path control devices such as valves are provided in the return water path to control the communication of the water path. After the user stops getting water, the pressure in the booster pump is utilized to extrude the pure water out of the reverse osmosis filter element and return the pure water to the upstream of the booster pump, so that the booster pump and the reverse osmosis filter element are flushed and soaked. Thereby reducing the TDS value of the first section of water taken by the water purifier after long-time standby.

However, the water purifier has a complex waterway structure, a plurality of interfaces in the waterway and a large water leakage risk; a plurality of control devices on the water path need to be controlled, the control logic is correspondingly complex, and errors are easy to occur.

Disclosure of Invention

In order to at least partially solve the problems in the prior art, according to an aspect of the present invention, there is provided a water purifier, including a main water pipeline, the main water pipeline communicating with a water inlet and a water intake of the water purifier, the main water pipeline being sequentially provided with a booster pump and a reverse osmosis filter element in a water flow direction, the water purifier further including a water storage device, the water storage device including: the total volume of the power cavity and the water storage cavity is fixed and can change the volume ratio of the power cavity and the water storage cavity according to the water pressure in the cavities; the water storage cavity is communicated with a pure water port of the reverse osmosis filter element through a water inlet pipeline, the water storage cavity is also communicated with a raw water port of the reverse osmosis filter element through a water outlet pipeline, a first check valve is arranged on the water outlet pipeline, and the communication direction of the first check valve is from the water storage cavity to the raw water port; the water purifier further comprises a controller, the controller is electrically connected to the booster pump, and the controller is used for: and in the time period when the water purifier is in the standby state, automatically controlling the booster pump to start according to a first electric signal from the water storage starting control device and automatically controlling the booster pump to stop working according to a second electric signal from the water storage ending control device.

The water purifier with the structure can automatically or according to a first electric signal from the water storage starting control device to control the booster pump to start after standby, the reverse osmosis filter element fills pure water into the water storage device, and the pure water washes and soaks the reverse osmosis filter element. Avoided after the long-time standby of purifier, received the influence of diffusion phenomenon, made the TDS value of the pure water side of reverse osmosis filter core rise to the TDS value of the first cup water that the user was next accepted and is got has been reduced. Moreover, even after washing, the static water body for a long time can generate bacteria, which is not beneficial to drinking. And the booster pump is started at intervals to flush the reverse osmosis filter element, so that the condition of bacterial breeding in the reverse osmosis filter element can be avoided. The water purifier achieves the purposes by arranging the water storage device, and has the advantages of simple water path and small water leakage risk; the control logic is also relatively simple correspondingly and has high reliability.

Illustratively, the controller automatically controls the booster pump to start by: starting to execute a first timing operation when the water purifier enters a standby state, and controlling the booster pump to start every first time threshold when the time counted by the first timing operation reaches the first time threshold; and/or the controller automatically controls the booster pump to stop working through the following operations: and in the time period when the water purifier is in the standby state, starting to execute the second timing operation when the booster pump is started, and controlling the booster pump to stop working when the time counted by the second timing operation reaches a second time threshold value.

The controller performs the first timing operation and the second timing operation, so that the automatic start and stop of the booster pump can be easily controlled. The control of the booster pump is directly realized through the controller, so that the control device in the water purifier can be reduced, and the water leakage risk and the product cost of the water purifier are reduced.

Illustratively, an operable piece is arranged on the shell of the water purifier, and the operable piece is electrically connected with the controller to be used as a water storage starting control device.

Through setting up the operable piece as retaining start control device, can control the purifier artificially and get into and wash the stage, realize artifical and automatic multiple selection operation.

Illustratively, a first flow meter is arranged on a main water pipeline between the booster pump and the reverse osmosis filter element, an inlet water pipeline or a concentrated water pipeline arranged at a concentrated water port of the reverse osmosis filter element, and the first flow meter is electrically connected with the controller to be used as a water storage end control device.

The first flowmeter is used as a water storage ending control device, so that the water storage amount is not influenced by water pressure, and the control precision is higher. The water purifier with the first flowmeter can calculate the water amount flowing into the water storage cavity, can also have other application functions, and lays a hardware foundation for the expansion of the functions of the water purifier.

The controller is further used for controlling the booster pump to start according to the electric signal for starting water taking from the water outlet control device and controlling the booster pump to stop working according to the electric signal for stopping water taking from the water outlet control device, so that the water purifier enters a standby state.

The water purifier with the controller can control the state of the water purifier in various modes by a user.

Illustratively, a second check valve and a high-pressure switch are sequentially arranged on the main water pipeline between the pure water port and the water intake according to the water flow direction, the communication direction of the second check valve is from the pure water port to the water intake, and the high-pressure switch is electrically connected to the controller to serve as a water outlet control device.

The water purifier with the water purifying device can be communicated with the mechanical faucet, and the starting and stopping of the water purifier are controlled by opening and closing the mechanical faucet, so that the water purifier is simple and feasible, and the application range of the water purifier can be enlarged. And, can also just wash the reverse osmosis filter core when the purifier gets into standby state, carry out the pure water bubble membrane to the reverse osmosis filter core in advance, further have slowed down the diffusion phenomenon in the reverse osmosis filter core.

Illustratively, the water outlet control device is an electrically controlled faucet, and the controller is also used for electrically connecting the electrically controlled faucet.

The water purifier for the external electric control faucet has the advantages of simple water path, clear control logic and easy realization.

Illustratively, a second flow meter is arranged on the main water pipeline between the booster pump and the reverse osmosis filter element, the water inlet pipeline or the concentrated water pipeline arranged at the concentrated water port of the reverse osmosis filter element, and the second flow meter is electrically connected to the controller.

The water purifier with the second flowmeter can also flush the reverse osmosis filter element immediately when the water purifier enters a standby state, so that pure water bubble membranes are carried out on the reverse osmosis filter element in advance, and the diffusion phenomenon in the reverse osmosis filter element is further slowed down. The water storage device is controlled by the second flowmeter, so that the water storage amount is not influenced by water pressure, and the control precision is higher. And the second flowmeter can not only calculate the water amount flowing into the water storage cavity, but also have other application functions, and make a hardware foundation for the expansion of the functions of the water purifier.

Illustratively, the water storage device is a pressure barrel and the power chamber includes an air bladder.

The water storage device with the air bag in the power cavity can reduce water path connection of the water storage device, power for discharging water in the water storage cavity can be generated without communicating the power cavity with a water inlet of the water purifier, the structure is simple, and connection is facilitated.

Illustratively, the power chamber communicates with a water inlet of the water purifier.

When the water storage device is used, the power cavity is communicated with the water inlet of the water purifier, and the pushing pressure of the power cavity can be kept constant, so that the water outlet speed of the water storage cavity can be kept constant in the process of discharging pure water from the water storage cavity, all the pure water in the water storage cavity can be discharged, and the pure water is prevented from being left in the water storage cavity.

Illustratively, the concentrate port of the reverse osmosis filter element is provided with a concentrate solenoid valve.

When the purifier washed the reverse osmosis filter core, the dense water solenoid valve would switch on, like this, can utilize the rivers of big flux to wash the reverse osmosis filter core, improved the filter effect of reverse osmosis filter core, also prolonged the life of reverse osmosis filter core.

According to another aspect of the present invention, there is provided a control method for a water purifier, the water purifier includes a main water pipeline, the main water pipeline is communicated with a water inlet and a water intake of the water purifier, a booster pump and a reverse osmosis filter element are sequentially disposed on the main water pipeline along a water flow direction, the water purifier further includes a water storage device, the water storage device includes: the total volume of the power cavity and the water storage cavity is fixed and can change the volume ratio of the power cavity and the water storage cavity according to the water pressure in the cavities; the water storage cavity is communicated with a pure water port of the reverse osmosis filter element through a water inlet pipeline, the water storage cavity is also communicated with a raw water port of the reverse osmosis filter element through a water outlet pipeline, a first check valve is arranged on the water outlet pipeline, and the communication direction of the first check valve is from the water storage cavity to the raw water port; the water purifier also comprises a controller which is electrically connected to the booster pump; the control method comprises the following steps: and in the time period when the water purifier is in the standby state, automatically controlling the booster pump to start according to a first electric signal from the water storage starting control device and automatically controlling the booster pump to stop working according to a second electric signal from the water storage ending control device.

Illustratively, automatically controlling the booster pump to start comprises: starting to execute a first timing operation when the water purifier enters a standby state; when the time counted by the first timing operation reaches a first time threshold, controlling the booster pump to start every other first time threshold; and/or automatically controlling the booster pump to stop working comprises: starting to execute a second timing operation when the booster pump is started in the time period when the water purifier is in the standby state; and controlling the booster pump to stop working when the time counted by the second timing operation reaches a second time threshold value.

Illustratively, a first flowmeter is arranged on a main water pipeline between the booster pump and the reverse osmosis filter element, an inlet water pipeline or a concentrated water pipeline arranged at a concentrated water port of the reverse osmosis filter element, and the first flowmeter is electrically connected with the controller to be used as a water storage end control device; the control method further comprises the following steps: accumulating the first water quantity passing through the first flowmeter when the booster pump is started according to the second electric signal from the first flowmeter in the time period when the water purifier is in the standby state; and controlling the booster pump to stop working when the first water amount reaches a first water amount threshold value.

Illustratively, the control method further includes: controlling the booster pump to start according to the electric signal for starting water taking from the water outlet control device; and controlling the booster pump to stop working according to the water taking stopping electric signal from the water outlet control device so as to enable the water purifier to enter a standby state.

Illustratively, the water outlet control device is an electrically controlled faucet, and the controller is further configured to electrically connect the electrically controlled faucet: the step of controlling the booster pump to stop working according to the water taking stopping electric signal from the water outlet control device comprises the following steps: starting a third timing operation after receiving an electric signal for stopping water taking of the electric control faucet; and controlling the booster pump to stop working when the time counted by the third timing operation reaches a third time threshold value.

Illustratively, the water outlet control device is an electrically controlled faucet, and the controller is further configured to electrically connect the electrically controlled faucet: a second flowmeter is arranged on a main water pipeline and a water inlet pipeline between the booster pump and the reverse osmosis filter element or a concentrated water pipeline arranged at a concentrated water port of the reverse osmosis filter element, and the second flowmeter is electrically connected to the controller; the step of controlling the booster pump to stop working according to the water taking stopping electric signal from the water outlet control device comprises the following steps: accumulating the second water quantity which passes through the second flowmeter since the electric signal for stopping water taking of the electric control faucet is received; and controlling the booster pump to stop working when the second water amount reaches a second water amount threshold value.

A series of concepts in a simplified form are introduced in the summary of the invention, which is described in further detail in the detailed description section. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

The advantages and features of the present invention are described in detail below with reference to the accompanying drawings.

Drawings

The following drawings of the invention are included to provide a further understanding of the invention. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. In the drawings there is shown in the drawings,

fig. 1 is a schematic water circuit diagram of a water purifier according to a first exemplary embodiment of the present invention;

FIG. 2 is a schematic flow chart of a water purifier according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a water circuit of a water purifier according to a second exemplary embodiment of the present invention;

FIG. 4 is a schematic illustration of a water circuit of a water purifier according to a third exemplary embodiment of the present invention; and

fig. 5 is a schematic water path diagram of a water purifier according to a fourth exemplary embodiment of the invention.

Wherein the figures include the following reference numerals:

100. a main water line; 101. a water inlet; 102. a water intake; 110. a booster pump; 120. a reverse osmosis filter element; 121. a raw water port; 122. a pure water port; 123. a dense water port; 200. a water storage device; 210. a power cavity; 220. a water storage cavity; 230. a water inlet pipeline; 240. a water outlet pipeline; 250. a first check valve; 310. a second check valve; 320. a high voltage switch; 510. a water inlet electromagnetic valve; 520. a concentrated water electromagnetic valve; 530. a third check valve; 610. a first flow meter; 700. the front-mounted filter element.

Detailed Description

In the following description, numerous details are provided to provide a thorough understanding of the invention. One skilled in the art, however, will understand that the following description merely illustrates a preferred embodiment of the invention and that the invention may be practiced without one or more of these details. In other instances, well known features have not been described in detail so as not to obscure the invention.

As shown in fig. 1, the present invention provides a water purifier, which comprises a main water pipeline 100, wherein the main water pipeline 100 is communicated between a water inlet 101 and a water intake 102 of the water purifier. Typically, the water inlet 101 may be in communication with a source of water such as a municipal water line, and the water intake 102 may be adapted to communicate with a water intake device, which may include a mechanical faucet, an electrically controlled faucet, and a line machine. The main water line 100 is provided with a booster pump 110 and a reverse osmosis filter 120. The booster pump 110 is used to increase the pressure in the main water line 100 downstream thereof, so that water having a certain pressure passes through the reverse osmosis filter element 120, and is filtered by the reverse osmosis filter element 120 to generate drinkable direct drinking water. The reverse osmosis filter element 120 is a prior art, and the filtering process of the reverse osmosis filter element 120 is a technical means well known to those skilled in the art, and the specific principle will not be described in detail.

The water purifier further comprises a water storage device 200. The water storage device 200 includes a power chamber 210 and a water storage chamber 220. The power chamber 210 and the water storage chamber 220 are not communicated with each other, and the volume thereof can be changed according to the water pressure in the chambers. Specifically, the total volume of both is fixed. The total volume may be set based on the amount of water required to flush the reverse osmosis cartridge 120. Moreover, the two can change their respective volume ratios according to the water pressure in the chamber. The water storage means 200 may be, for example, a water drive means as in the prior art.

The power chamber 210 serves to provide power for discharging the water stored in the reservoir chamber 220. The water stored in the water storage chamber 220 is discharged out of the chamber by the squeezing or pushing of the power chamber 210.

The water storage chamber 220 is provided with an inlet pipe 230 and an outlet pipe 240. The water inlet pipe 230 connects the water storage chamber 220 with the pure water port 122 of the reverse osmosis filter element 120, that is, pure water filtered by the reverse osmosis filter element 120 is stored in the water storage chamber 220. The water outlet pipeline 240 connects the water storage cavity 220 with the raw water port 121 of the reverse osmosis filter element 120. The water outlet pipe 240 is provided with a first check valve 250, and the first check valve 250 is communicated from the water storage chamber 220 to the raw water port 121.

The water inlet pipe 230 and the water outlet pipe 240 may be two pipes branched from one water outlet of the water storage cavity 220, or two pipes respectively connected to two water outlets of the water storage cavity 220. The two communication modes do not influence the use condition of the device.

The purifier still includes the controller. The controller is electrically connected to the booster pump 110. The controller may be configured to automatically flush and soak the reverse osmosis filter element 120 with the pure water stored in the water storage chamber 220 during a standby period of time. The standby state refers to a state that the water purifier does not produce water for a user. The standby state may be completed from the time when the booster pump 110 stops operating after the previous water intake is completed to the time when the booster pump 110 starts operating when the next water intake is started. When the water purifier is in a standby state, the water taking device is closed. Specifically, the controller may be configured to automatically control the booster pump 110 to start up during a period when the water purifier is in a standby state. The controller may also be configured to automatically control the booster pump 110 to stop operating during a period when the water purifier is in a standby state. The controller can also be used for controlling the booster pump 110 to start according to the first electric signal from the water storage starting control device in the time period when the water purifier is in the standby state. The water storage activation control device may be used to activate the process of storing water into the water storage chamber 220. The controller may be further configured to control the booster pump 110 to stop operating in response to a second electric signal from the end-of-water-storage control device. The end-of-water-storage control means may be used to terminate the process of storing water into the water storage chamber 220. It will be appreciated that two ways of controlling the booster pumps 110 to start up and two ways of controlling the booster pumps 110 to stop operating are given above. The manner in which booster pump 110 is controlled to start and stop operation may be any combination. For example, the controller may automatically control the booster pumps 110 to start and stop operating. The controller may also first automatically control the booster pump 110 to start, and then control the booster pump 110 to stop operating according to the second electric signal. The controller may first control the booster pump 110 to start according to the first electric signal, and then automatically control the booster pump 110 to stop operating. The controller may also first control the booster pump 110 to start according to the first electric signal, and then control the booster pump 110 to stop according to the second electric signal. Automatically controlling the start and stop of booster pump 110 may be accomplished using a timer within the controller that controls the start and stop of booster pump 110 over time. The impounded water activation control can be an element disposed on the housing of the water purifier, such as a switch, button, or the like. The water storage end control device can comprise a flowmeter for detecting the flow in the pipeline or a pressure sensor for detecting the pressure in the pipeline. Which will also be described in detail below.

With the water purifier provided above, when the water purifier is in a standby state, the raw water side of the reverse osmosis filter element 120 is flushed with the pure water stored in the water storage cavity 220, and the raw water on the raw water side is replaced with the pure water, so that the water purifier plays a role of a pure water bubble membrane.

The following will describe the specific working process of the water purifier in detail.

The user opens the water intake device to take water, and the water is made by the water purifier. The booster pump 110 is activated, the reverse osmosis filter element 120 filters the inflow raw water, and the pure water is discharged from the water intake 102 through the pure water port 122 of the reverse osmosis filter element 120. Because the power cavity 210 generates a certain resistance to the water storage cavity 220, the pure water discharged from the pure water port 122 will not flow into the water storage cavity 220 to press the power cavity 210, but completely flow out from the water intake device to be taken by the user. When the user turns off the water intake device, the booster pump 110 stops operating. The water purifier stops making water and enters a standby state until the water taking device is opened by a user next time.

In the standby state period of the water purifier, the water purifier may control the start and stop of the booster pump 110 by using the controller, so as to store pure water into the water storage cavity 220 of the water storage device 200 and flush and soak the reverse osmosis filter element 120 by using the pure water in the water storage cavity 220.

In one embodiment, the water purifier may automatically control the booster pump 110 to start and stop operating via a controller. When the water purifier enters the standby state, that is, the water intake by the user is finished, and the booster pump 110 stops working, the controller starts to execute the first timing operation. When the time counted by the first timing operation reaches a first time threshold, the booster pump 110 is controlled to start every first time threshold. According to the occurrence rule of the diffusion phenomenon in the reverse osmosis filter element 120, the diffusion phenomenon reaches a peak value about one hour after the reverse osmosis filter element 120 stops producing water, that is, at this time, ions on the raw water side move to the pure water side through the reverse osmosis membrane, resulting in an increase in the TDS value on the pure water side. The first time threshold value can be set at any value between 30 minutes and 60 minutes.

After the controller controls the booster pump 110 to start, the pure water prepared by the reverse osmosis filter element 120 is filled into the water storage cavity 220 through the water inlet pipeline 230 and extrudes the power cavity 210, so that the volume of the power cavity 210 is reduced.

Upon startup of the booster pump 110, the controller starts to perform a second clocking operation. The operating time of the booster pump 110 is timed. And controlling the booster pump 110 to stop working when the time counted by the second timing operation reaches a second time threshold value. The second time threshold may be calculated according to the volume of the water storage chamber 220 and the displacement of the booster pump 110, that is, after the water storage chamber 220 stores a desired volume of pure water, the booster pump 110 may stop operating.

After the booster pump 110 stops working, the water pressure provided by the booster pump 110 to the water storage chamber 220 is also eliminated. The power chamber 210 presses the water storage chamber 220, so that the pure water previously prepared in the water storage chamber 220 flows into the raw water port 121 of the reverse osmosis filter element 120 through the water outlet pipe 240. The pure water displaces the raw water on the raw water side before the reverse osmosis filter element 120, and the reverse osmosis membrane is washed and immersed in the pure water.

Fig. 2 is a schematic flow chart of a water purifier according to an embodiment of the present invention. The time period between two water fetches is the period of the standby state, wherein the period can be divided into a rinsing phase and a non-rinsing phase. The total duration of one non-rinsing phase and one rinsing phase is a first time threshold. During the last period of the non-flushing period, which is the second time threshold, the booster pump 110 completes the operation of starting and stopping the operation, so as to store water for the water storage device 200 during the period.

In the above embodiment, the controller performs the first timing operation and the second timing operation, so that the control of the automatic start and stop of the booster pump 110 can be easily performed. The booster pump 110 is directly controlled by the controller, so that the control device in the water purifier can be reduced, and the water leakage risk and the product cost of the water purifier are reduced.

In another embodiment, an operable element may be disposed on the housing of the water purifier, and the operable element is electrically connected to the controller to serve as a water storage start control device. In other words, by operating the operable member, a user can start the booster pump 110 at any time when the water purifier is in a standby state, fill the water storage cavity 220 with pure water, and flush the raw water side of the reverse osmosis filter element 120 with the pure water in the water storage cavity 220. It is understood that the stopping of the booster pump 110 may be performed by referring to the above-mentioned process of the second timing operation, or may be performed according to the second electric signal.

Through setting up the operable piece as retaining start control device, can control the purifier artificially and get into and wash the stage, realize artifical and automatic multiple selection operation.

In still another embodiment, the first flow meter 610 is disposed on the main water line 100 from the booster pump 110 to the reverse osmosis filter element 120, the water inlet line 230, or the concentrate line disposed at the concentrate inlet 123 of the reverse osmosis filter element 120. The first flow meter 610 is electrically connected to the controller to serve as a water storage end control means. In other words, the stop of the booster pump 110 may be controlled by the amount of water flowing through the first flow meter 610 during the pure water storage into the water storage chamber 220.

As shown in fig. 3, the first flow meter 610 may be provided on the water inlet line 230. The first flow meter 610 may detect the flow into the water storage cavity 220 to generate a second electrical signal accordingly. The controller may accumulate the first amount of water passed by the first flow meter from the time when the booster pump 110 is started, and control the booster pump 110 to stop operating when the first amount of water reaches a volume expected to fill pure water into the water storage chamber 220. It is understood that the volume of pure water expected to be filled into the water storage chamber 220 may be preset to the first water volume threshold. Alternatively, the first flow meter 610 is disposed on the main water line 100 and the concentrated water line, and the volume of the pure water entering the water storage chamber 220 can be indirectly calculated through the proportional relationship between the reverse osmosis filter element 120 and the raw water, the pure water and the concentrated water.

The first flow meter 610 is used as a water storage end control device, so that the water storage amount is not influenced by the water pressure, and the control precision is higher. The water purifier with the first flow meter 610 can not only calculate the amount of water flowing into the water storage cavity 220, but also has other application functions, and makes a hardware basis for the expansion of the functions of the water purifier.

In summary, the water purifier can control the booster pump 110 to start automatically or according to the first electric signal from the water storage start control device after the water purifier is standby, and the reverse osmosis filter element 120 fills the water storage device 200 with pure water, and the pure water flushes and soaks the reverse osmosis filter element 120. Avoided after the long-time standby of purifier, received the influence of diffusion phenomenon, made the TDS value of reverse osmosis filter core 120's pure water side rise to reduced the TDS value of the first cup water that the user was next accepted and was got. Moreover, even after washing, the static water body for a long time can generate bacteria, which is not beneficial to drinking. And the booster pump 110 is started at intervals to flush the reverse osmosis filter element 120, so that the condition of bacterial breeding in the reverse osmosis filter element 120 can be avoided. The water purifier achieves the purpose by arranging the water storage device, and has a simple water path and small water leakage risk; the control logic is also relatively simple and reliable.

For example, the power chamber 210 of the water storage device 200 may have a structure for providing power transmission, for example, the power chamber 210 may communicate with the water inlet 101 of the water purifier, and the power chamber 210 may also have a structure capable of storing energy, such as an air bag or a spring.

In one embodiment, taking the power chamber 210 in communication with the water inlet 101 of the water purifier as an example, as shown in fig. 4, the user turns on the water intake device to take water, the booster pump 110 is activated, the reverse osmosis filter element 120 filters the water, and the pure water is discharged from the water inlet 102 through the pure water port 122. In a normal case, the water inlet 101 of the water purifier is connected to a water circuit with pressure, such as a municipal water circuit, wherein the water pressure can be maintained between 0.1MPa and 0.6 MPa. At the intake 102 end, since the intake 102 is open to the atmosphere, the pressure at the intake 102 will be less than the pressure at the intake 101. The pure water discharged from the pure water inlet 122 will not flow into the water storage cavity 220 to press the power cavity 210, but will completely flow out from the water outlet device and be received by the user.

In the standby state of the water purifier, the booster pump 110 may be activated according to the above-described conditions. The pressure generated by the booster pump 110 during operation is much higher than the pressure of the water inlet 101 of the water purifier. At this time, the pure water prepared by the reverse osmosis filter element 120 is filled into the water storage chamber 220 through the water inlet pipe 230, and the raw water in the power chamber 210 is extruded and discharged. The discharged raw water may flow into the water inlet of the booster pump 110 to be circulated and filtered.

After the water storage cavity 220 is filled with pure water of a desired volume, the booster pump 110 stops working. At this time, the pressure provided by the booster pump 110 to the water storage chamber 220 is also lost. Under the influence of the pressure at the water inlet 101 of the water purifier, the raw water enters the power chamber 210 to press the water storage chamber 220, so that the pure water prepared in the water storage chamber 220 flows into the raw water port 121 of the reverse osmosis filter element 120 through the water outlet pipeline 240. The raw water on the raw water side before the reverse osmosis filter element 120 is replaced, and the reverse osmosis membrane is washed and immersed in pure water.

When the water storage device 200 is used, the power cavity 210 is communicated with the water inlet 101 of the water purifier, and the pushing pressure of the power cavity can be kept constant, so that the water outlet speed of the water storage cavity 220 can be kept constant in the process of discharging pure water from the water storage cavity 220, all the pure water in the water storage cavity 220 can be discharged, and the pure water is prevented from being left in the water storage cavity 220.

In another embodiment, as shown with reference to FIG. 1, the water storage device 200 may be a pressure tank, wherein the power chamber 210 includes an air bladder. That is, a gas-filled airbag is provided in the power chamber 210. When water is stored in the water storage cavity 220, the air bag is squeezed, and the pressure in the air bag is increased. When the water in the water storage cavity 220 needs to be discharged to the external water path, the air bag converts the air pressure in the water storage cavity 220 into power to push the water in the water storage cavity 220 to be discharged. The difference from the above-mentioned embodiments is that the power source of the power cavity 210 is different, and the rest of the working principle and the action flow can be used as reference, and will not be described in detail.

The water storage device 200 with the power cavity 210 comprising the air bag can reduce the water path connection of the water storage device 200, and the power for discharging water in the water storage cavity 220 can be generated without communicating the power cavity 210 with the water inlet 101 of the water purifier, so that the power device is simple in structure and more convenient to connect.

For convenience of description, the embodiment of fig. 1, i.e., the embodiment in which the power chamber 210 of the water storage device 200 includes an air bag, will be described as a basis.

Illustratively, the controller is further configured to control the booster pump 110 to start according to the electric signal for starting water intake from the water outlet control device and control the booster pump 110 to stop working according to the electric signal for stopping water intake from the water outlet control device, so as to enable the water purifier to enter a standby state.

The start and stop water getting electrical signals may come from a high voltage switch provided on the main water line 100. For example, the high voltage switch is caused to emit an electrical signal to start water intake and an electrical signal to stop water intake by the pressure in the main water line 100. Alternatively, the controller may receive electric signals for starting and stopping water intake based on the opening and closing operations from the electrically controlled faucet.

The water purifier with the controller can control the state of the water purifier in various modes.

In one embodiment, as shown in fig. 5, the water purifier is provided with a second check valve 310 and a high pressure switch 320 in the water flow direction in the main water pipe 100 between the pure water port 122 and the water intake port 102. The second check valve 310 is connected from the purified water inlet 122 to the water intake 102, and the high-pressure switch 320 is electrically connected to the controller to serve as a water outlet control device for sending an electric signal to the controller. The switching-off threshold of the high-pressure switch 320 is greater than the back pressure on the clean water side of the reverse osmosis filter element 120, for example, by 2.5 MPa. The preset value allows the water pressure in the waterway to fluctuate without causing misoperation of the water purifier.

The water purifier with the above arrangement can be communicated with a mechanical faucet at the water intake 102. When the mechanical faucet is turned on to take water, the high-voltage switch 320 is turned on to send an electric signal for starting water taking to the controller, and the controller can control the booster pump 110 to start up to perform the above water making process.

When the user closes the mechanical faucet and stops taking water, the pressure in the waterway in which the high pressure switch 320 is located does not rise immediately. Instead, after the water storage chamber 220 is filled with pure water, the pressure in the main water line 100 is continuously increased from the water pressure at the water inlet 101 of the water purifier to the cut-off threshold value and then is cut off. Meanwhile, an electric signal for stopping water taking is sent to the controller, so that the booster pump 110 is controlled to stop working, and the water purifier enters a standby state. Because the water storage cavity 220 is filled with pure water at this time, the reverse osmosis filter element 120 can be immediately washed when the water purifier enters a standby state under the push of the power cavity 210. And due to the arrangement of the second check valve 310, after standby, even if the booster pump 110 does not provide pressure to the main water pipeline 100 any more, the pressure between the high-pressure switch 320 and the water intake 102 is still maintained, and the error conduction operation of the high-pressure switch 320 is avoided.

Therefore, the water purifier with the water purifying device can be communicated with the mechanical faucet, the starting and stopping of the water purifier are controlled by opening and closing the mechanical faucet, the operation is simple and feasible, and the application range of the water purifier can be expanded. Moreover, when the water purifier enters a standby state, the reverse osmosis filter element 120 can be flushed, so that a pure water bubble film is carried out on the reverse osmosis filter element 120 in advance, and the diffusion phenomenon in the reverse osmosis filter element 120 is further slowed down.

In another embodiment, the water outlet control device is an electrically controlled faucet, and the controller is further used for electrically connecting the electrically controlled faucet. An electrically controlled faucet may be externally connected to the intake 102.

When the user opens the electric control faucet, the electric control faucet sends an electric signal for starting water taking to the controller, and the controller controls the booster pump 110 to start, so as to perform the water making process.

Illustratively, the controller may set a third time threshold. When the user closes the electric control faucet, the electric control faucet sends an electric signal for stopping water taking to the controller. The controller starts the third timing operation after receiving the electric signal for stopping water intake, and controls the booster pump 110 to stop working when the time counted by the third timing operation reaches a third time threshold value, so that the water purifier enters a standby state. The water storage chamber 220 may be filled after the third time threshold is reached. The third time threshold may be set according to the total volume of the reverse osmosis filter element 120 and the water outlet rate of the pure water port 122 thereof. Optionally, the third time threshold may be greater than or equal to the aforementioned second time threshold. For the case that the third time threshold is greater than the second time threshold, the reverse osmosis filter element 120 can be more thoroughly flushed when the water purifier just enters the standby state, so as to reduce the burden of subsequent flushing operation and further improve the water outlet quality of the water purifier.

Therefore, the water purifier for the external electric control faucet is simple in water path, clear in control logic and easy to realize.

Illustratively, a second flow meter is provided on the main water line 100 between the booster pump 110 and the reverse osmosis filter element 120, the water inlet line 230, or a concentrate line provided at the concentrate inlet 123 of the reverse osmosis filter element 120. The second flow meter is electrically connected to the controller. Referring to fig. 3, for example, the second flow meter is disposed in the water inlet line 230, and after the user closes the electrically controlled faucet, the electrically controlled faucet sends an electric signal to the controller to stop taking water, so that pure water is filled in the water storage cavity 220. The second flow meter detects an amount of water passing therethrough. The controller accumulates the second amount of water passed by the second flow meter since the electric signal for stopping the intake of water by the electric control faucet is received (i.e., since the pure water starts to enter the water storage chamber 220). When the controller determines that the second water amount reaches the preset second water amount threshold value, the booster pump 110 is controlled to stop working, and the water purifier enters a standby state. The water storage chamber 220 may be filled after the second water threshold is reached. The second water volume threshold may be set based on the total volume of the reverse osmosis cartridge 120. Because the water storage cavity 220 is also filled with pure water at this time, the water storage cavity is pushed by the power cavity 210, and the reverse osmosis filter element 120 can be immediately flushed when the water purifier enters a standby state. Wherein the second flow meter may be the same flow meter as the first flow meter 610.

Therefore, the water purifier with the second flow meter can flush the reverse osmosis filter element 120 immediately when the water purifier enters a standby state, so that the reverse osmosis filter element 120 is subjected to pure water bubble membrane in advance, and the diffusion phenomenon in the reverse osmosis filter element 120 is further slowed down. The water storage device is controlled by the second flowmeter, so that the water storage amount is not influenced by water pressure, and the control precision is higher. And the existence of the second flowmeter not only can calculate the water quantity flowing into the water storage cavity 220, but also can have other application functions, and the hardware basis is well done for the expansion of the functions of the water purifier.

Illustratively, a concentrate solenoid valve 520 is provided at the concentrate port 123 of the reverse osmosis cartridge 120. The concentrate solenoid valve 520 has on and off states, and the concentrate solenoid valve 520 is in the off state during standby and water production. When the purifier washed reverse osmosis filter core 120, concentrated water solenoid valve 520 would switch on, like this, can utilize the rivers of big flux to wash reverse osmosis filter core 120, improved reverse osmosis filter core 120's filter effect, also prolonged reverse osmosis filter core 120's life.

Illustratively, a third check valve 530 is disposed on the water inlet pipe 230, and the third check valve 530 is communicated from the pure water port 122 to the water storage cavity 220. This setting can be in the water storage chamber 220 to the reverse osmosis filter core 120 in-process of washing, and the water that prevents in the water storage chamber 220 enters into the pure water side of reverse osmosis filter core 120, and the play water of control water storage chamber 220 only flows into reverse osmosis filter core 120 through outlet pipe 240, makes the in-process of washing, and the direction of rivers is more clear and definite and clear.

Illustratively, a pre-filter cartridge 700 is provided at the water inlet 101 of the main water line 100. Leading filter core 700 is the first coarse filtration equipment to the purifier, can get rid of visible solid impurity in the pipeline, mainly has rust, silt, alga, colloid etc. plays positive guard action to leading and purifier internal pipeline etc..

Illustratively, on the main water line 100 between the water inlet 101 and the booster pump 110, a water inlet solenoid valve 510 is provided. The water inlet solenoid valve 510 may have two states of on and off, and may be linked with the booster pump 110, that is, the booster pump 110 is started, and the water inlet solenoid valve 510 is opened; the booster pump 110 is stopped and the water inlet solenoid valve 510 is closed.

Because the concentrate inlet 123 of the reverse osmosis filter element 120 is provided with a waste water ratio device communicated with the atmosphere. The water on the raw water side of the reverse osmosis cartridge 120 may be discharged through a waste water ratio device. Therefore, the water inlet solenoid valve 510 can prevent the water from the water inlet 101 from flowing through the booster pump 110, entering the raw water side of the reverse osmosis filter element 120, and flowing out from the concentrate water inlet 123 after the water purifier enters the standby state. Thereby reducing the waste of water resources.

According to another aspect of the invention, a control method of a water purifier is provided. The purifier includes main water pipeline 100, and main water pipeline 100 communicates the water inlet 101 and the intake 102 of purifier, has set gradually booster pump 110 and reverse osmosis filter core 120 according to the rivers direction on main water pipeline 100, and the purifier still includes water storage device 200, and water storage device 200 includes: the total volume of the power cavity 210 and the water storage cavity 220 is fixed and the total volume of the power cavity 210 and the water storage cavity 220 can change the volume ratio of the power cavity 210 and the water storage cavity 220 according to the water pressure in the cavities. The water storage chamber 220 is communicated with the pure water port 122 of the reverse osmosis filter element 120 through a water inlet pipeline 230. The water storage cavity 220 is also communicated with the raw water port 121 of the reverse osmosis filter element 120 through a water outlet pipeline 240. The outlet pipe 240 is provided with a first check valve 250. The first check valve 250 is communicated from the water storage chamber 220 to the raw water port 121. The water purifier further comprises a controller electrically connected to the booster pump 110. The control method comprises the following steps: and in the time period when the water purifier is in the standby state, automatically controlling the booster pump 110 to start according to a first electric signal from the water storage starting control device and automatically controlling the booster pump 110 to stop working according to a second electric signal from the water storage ending control device.

For example, the step of automatically controlling the start-up of the booster pump 110 may include: starting to execute a first timing operation when the water purifier enters a standby state; and controlling the booster pump 110 to start every first time threshold when the time counted by the first timing operation reaches the first time threshold. The step of automatically controlling the booster pump 110 to stop operating may include: in the time period when the water purifier is in the standby state, starting to execute a second timing operation from the start of the booster pump 110; and controls the booster pump 110 to stop operating when the second timed operation time reaches a second time threshold.

Illustratively, a first flow meter 610 is provided on the main water line 100 between the booster pump 110 and the reverse osmosis filter element 120, the water inlet line 230, or the concentrate line provided at the concentrate inlet 123 of the reverse osmosis filter element 120. The first flow meter 610 is electrically connected to the controller to serve as a water storage end control means. The control method may further include: during the time period when the water purifier is in the standby state, accumulating the first water amount passing through the first flow meter 610 since the booster pump 110 is started according to the second electric signal from the first flow meter 610; and when the first water amount reaches the first water amount threshold value, controlling the booster pump 110 to stop working.

Illustratively, the control method may further include: controlling the booster pump to start according to an electric signal for starting water taking from the water outlet control device; and controlling the booster pump to stop working according to the water taking stopping electric signal from the water outlet control device so as to enable the water purifier to enter a standby state.

Illustratively, the water outlet control device is an electrically controlled faucet, and the controller is also used for electrically connecting the electrically controlled faucet. The step of controlling the booster pump 110 to stop operating according to the electric signal for stopping water intake from the water outlet control device may include: starting a third timing operation after receiving an electric signal for stopping water taking of the electric control faucet; and controlling the booster pump 110 to stop operating when the third counted operation time reaches a third time threshold.

Illustratively, the water outlet control device is an electrically controlled faucet, and the controller is also used for electrically connecting the electrically controlled faucet. A second flow meter is provided on the water inlet line 230, and the second flow meter is electrically connected to the controller. The step of controlling the booster pump 110 to stop operating according to the electric signal for stopping water intake from the water outlet control device may include: accumulating the second water quantity which passes through the second flowmeter since the electric signal for stopping taking water of the electric control faucet is received; and controlling the booster pump 110 to stop operating when the second water amount reaches a second water amount threshold.

The following describes a control method of a water purifier according to an embodiment of the present invention in detail with an embodiment shown in fig. 1. The water outlet control device is an electric control faucet, and the power cavity 210 of the water storage device 200 comprises an air bag. The controller may automatically control the start and stop operations of the booster pump 110.

When a user opens the electric control faucet to take water, the booster pump 110 is started, the reverse osmosis filter element 120 filters the water, and the pure water is discharged from the water taking port 102 through the pure water port 122, completely flows out of the water taking device and is taken by the user. When the user closes the electrically controlled faucet, the booster pump 110 stops working, and the water purifier enters a standby state.

When the water purifier enters the standby state, that is, the booster pump 110 stops working, the controller starts to execute the first timing operation. When the time counted by the first timing operation reaches the first time threshold, the booster pump 110 is started, and the pure water prepared by the reverse osmosis filter element 120 is filled into the water storage chamber 220 through the water inlet pipe 230 and presses the power chamber 210, so that the volume of the power chamber 210 is reduced.

Upon startup of the booster pump 110, the controller starts to perform a second clocking operation. The operating time of the booster pump 110 is timed. And controlling the booster pump 110 to stop working when the time counted by the second timing operation reaches a second time threshold value. The second time threshold may be calculated according to the volume of the water storage cavity 220 and the displacement of the booster pump 110, that is, after the water storage cavity 220 is filled with pure water with a desired volume, the booster pump 110 may stop operating.

After the booster pump 110 stops operating, the pressure provided by the booster pump 110 to the water storage chamber 220 is also eliminated. The water storage chamber 220 is pressed by the thrust provided by the power chamber 210, so that the pure water previously stored in the water storage chamber 220 flows into the raw water port 121 of the reverse osmosis filter element 120 through the water outlet pipe 240. The raw water on the raw water side before the reverse osmosis filter element 120 is replaced, and the reverse osmosis membrane is washed and immersed in pure water.

When the user gets water next time, the current standby state is interrupted, and the water purifier enters the water making state for the user again.

A person skilled in the art can understand the specific steps and technical effects of the control method of the water purifier by reading the above detailed description of the water purifier, and therefore, the detailed description is omitted here for brevity.

In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Similarly, it should be appreciated that in the description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the invention and aiding in the understanding of one or more of the various inventive aspects. However, the method of the present invention should not be construed to reflect the intent: rather, the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.

It will be understood by those skilled in the art that all of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where such features are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.

Moreover, those skilled in the art will appreciate that although some embodiments described herein include some features included in other embodiments, not others, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, elements, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The present invention has been illustrated by the above embodiments, but it should be understood that the above embodiments are for illustrative and descriptive purposes only and are not intended to limit the invention to the scope of the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many variations and modifications may be made in accordance with the teachings of the present invention, which variations and modifications are within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (17)

1. The utility model provides a water purifier, includes the main water pipeline, the main water pipeline intercommunication the water inlet and the intake of water purifier main water pipeline has set gradually booster pump and reverse osmosis filter core, its characterized in that according to the rivers direction:

the purifier still includes water storage device, water storage device includes: the total volume of the power cavity and the water storage cavity is fixed and can change the volume ratio of the power cavity and the water storage cavity according to the water pressure in the cavities;

the water storage cavity is communicated with a pure water port of the reverse osmosis filter element through a water inlet pipeline, the water storage cavity is also communicated with a raw water port of the reverse osmosis filter element through a water outlet pipeline, a first check valve is arranged on the water outlet pipeline, and the communication direction of the first check valve is from the water storage cavity to the raw water port;

the water purifier further comprises a controller electrically connected to the booster pump, the controller being configured to:

in the time period when the water purifier is in the standby state,

the booster pump is controlled to start automatically or according to a first electric signal from a water storage starting control device; and

and controlling the booster pump to stop working automatically or according to a second electric signal from the water storage end control device.

2. The water purifier of claim 1,

the controller automatically controls the booster pump to start through the following operations: starting to execute a first timing operation when the water purifier enters a standby state, and controlling the booster pump to start every first time threshold when the time counted by the first timing operation reaches the first time threshold; and/or

The controller automatically controls the booster pump to stop working through the following operations: and in the time period when the water purifier is in the standby state, starting to execute a second timing operation from the start of the booster pump, and controlling the booster pump to stop working when the time counted by the second timing operation reaches a second time threshold.

3. The water purifier of claim 1, wherein an operable member is provided on a housing of the water purifier, the operable member being electrically connected to the controller to serve as the impounded water activation control device.

4. The water purifier as claimed in claim 1, wherein a first flow meter is provided on a main water line between the booster pump and the reverse osmosis filter element, the water inlet line or a concentrate line provided at a concentrate port of the reverse osmosis filter element, and the first flow meter is electrically connected to the controller as the water storage end control means.

5. The water purifier as recited in claim 1, wherein said controller is further configured to control said booster pump to start according to an electric signal for starting water intake from said water outlet control device and to stop according to an electric signal for stopping water intake from said water outlet control device, so as to put said water purifier into a standby state.

6. The water purifier as recited in claim 5, wherein a second check valve and a high pressure switch are sequentially disposed on said main water pipeline between said purified water inlet and said water intake in said water flow direction, said second check valve is connected from said purified water inlet to said water intake, and said high pressure switch is electrically connected to said controller as said water outlet control device.

7. The water purifier of claim 5, wherein the water outlet control device is an electrically controlled faucet, and the controller is further configured to electrically connect the electrically controlled faucet.

8. The water purifier as recited in claim 7, wherein a second flow meter is provided on a main water line between said booster pump and said reverse osmosis filter element, said water inlet line or a concentrate line provided at a concentrate port of said reverse osmosis filter element, said second flow meter being electrically connected to said controller.

9. The water purifier according to any one of claims 1 to 8, wherein the water storage device is a pressure barrel and the power chamber comprises an air bag.

10. The water purifier according to any one of claims 1 to 8, wherein said power chamber is in communication with a water inlet of said water purifier.

11. The water purifier according to any one of the claims 1 to 8, wherein the concentrate port of the reverse osmosis filter element is provided with a concentrate solenoid valve.

12. A control method of a water purifier comprises a main water pipeline, wherein the main water pipeline is communicated with a water inlet and a water intake of the water purifier, a booster pump and a reverse osmosis filter element are sequentially arranged on the main water pipeline along the water flow direction, and the control method is characterized in that,

the purifier still includes water storage device, water storage device includes: the total volume of the power cavity and the water storage cavity is fixed and can change the volume ratio of the power cavity and the water storage cavity according to the water pressure in the cavities; the water storage cavity is communicated with a pure water port of the reverse osmosis filter element through a water inlet pipeline, the water storage cavity is also communicated with a raw water port of the reverse osmosis filter element through a water outlet pipeline, a first check valve is arranged on the water outlet pipeline, and the communication direction of the first check valve is from the water storage cavity to the raw water port; the water purifier further comprises a controller electrically connected to the booster pump;

the control method comprises the following steps:

in the time period when the water purifier is in the standby state,

the booster pump is controlled to start automatically or according to a first electric signal from a water storage starting control device; and

and controlling the booster pump to stop working automatically or according to a second electric signal from the water storage end control device.

13. The control method according to claim 12,

the automatically controlling the booster pump to start includes:

starting to execute a first timing operation when the water purifier enters a standby state; and

when the time counted by the first timing operation reaches a first time threshold, controlling the booster pump to start every other first time threshold; and/or

The automatically controlling the booster pump to stop working comprises:

in the time period when the water purifier is in the standby state, starting to execute a second timing operation from the start of the booster pump; and

and when the time counted by the second timing operation reaches a second time threshold value, controlling the booster pump to stop working.

14. The control method according to claim 12, wherein a first flow meter is provided on a main water line between the booster pump and the reverse osmosis filter element, the water inlet line, or a concentrate line provided at a concentrate port of the reverse osmosis filter element, the first flow meter being electrically connected to the controller to serve as the water accumulation end control means; the control method further comprises the following steps:

during the time period when the water purifier is in a standby state, accumulating the first water quantity passing through the first flow meter from the start of the booster pump according to the second electric signal from the first flow meter; and

and when the first water amount reaches a first water amount threshold value, controlling the booster pump to stop working.

15. The control method according to claim 12, characterized by further comprising:

controlling the booster pump to start according to an electric signal for starting water taking from the water outlet control device; and

and controlling the booster pump to stop working according to the water taking stopping electric signal from the water outlet control device so as to enable the water purifier to enter a standby state.

16. The control method of claim 15, wherein the water outlet control device is an electrically controlled faucet, the controller further configured to electrically connect the electrically controlled faucet:

the step of controlling the booster pump to stop working according to the electric signal for stopping water taking from the water outlet control device comprises the following steps:

starting a third time counting operation from the reception of the electric signal for stopping water intake of the electric control faucet; and

and when the time counted by the third timing operation reaches a third time threshold value, controlling the booster pump to stop working.

17. The control method of claim 15, wherein the water outlet control device is an electrically controlled faucet, the controller further configured to electrically connect the electrically controlled faucet: a second flowmeter is arranged on a main water pipeline between the booster pump and the reverse osmosis filter element, the water inlet pipeline or a concentrated water pipeline arranged at a concentrated water port of the reverse osmosis filter element, and the second flowmeter is electrically connected to the controller;

the step of controlling the booster pump to stop working according to the electric signal for stopping water taking from the water outlet control device comprises the following steps:

accumulating a second amount of water passed by the second flow meter since the electric signal for stopping taking water of the electric control faucet is received; and

and when the second water volume reaches a second water volume threshold value, controlling the booster pump to stop working.

Images