CN210825686U - Water purifier - Google Patents

Abstract

The utility model provides a water purifier, it is including the main water pipeline that is connected to the delivery port, and main water pipeline includes booster pump, reverse osmosis membrane filter core, check valve and the high tension switchgear that sets gradually along the rivers direction, and the water purifier still includes: a water tank; one end of the water storage pipeline is connected between the reverse osmosis membrane filter element and the one-way valve, the other end of the water storage pipeline is connected to the water tank, the water storage pipeline comprises a water storage electromagnetic valve and a water suction pump, and the water suction pump is used for pumping water from the water tank; and the controller is connected to the booster pump, the high-voltage switch, the water storage electromagnetic valve and the water suction pump, wherein the booster pump and the water suction pump are started by the controller when the high-voltage switch is closed, so that the reverse osmosis membrane filter element and the water tank jointly supply water to the water outlet. Therefore, the direct drinking water flowing out of the water outlet can be supplied by the two pumps at the same time, and the water yield is improved. And the pressure value in the water intake pipeline section is greatly improved, and even if the water purifier is far away from the water intake end, the phenomenon that the high-voltage switch works unstably can not occur.

Description

Water purifier

Technical Field

The utility model relates to a technical field of aqueous cleaning specifically, relates to a purifier.

Background

With the pursuit of the public on the quality of life, the water purifier gradually enters the families of people. The reverse osmosis membrane water purifier is more and more popular because the purified water produced by the reverse osmosis membrane water purifier is fresher, more sanitary and safer.

In the reverse osmosis membrane water purifier, some water purifiers are provided with a water tank for storing prepared direct drinking water in advance. When a user opens the faucet to take water, the water suction pump of the water purifier is started to pump out direct drinking water in the water tank. When the direct drinking water in the water tank is insufficient, the water purifier automatically replenishes water to the water tank. A high-voltage switch is arranged between the water suction pump and the water outlet of the water purifier. When a user takes water from the faucet, the pressure between the water suction pump and the water outlet is reduced, the high-voltage switch is closed, the water suction pump is started by the water purifier, and direct drinking water is pumped out from the water tank. When the user closes the faucet, the water suction pump continues to work, so that the pressure of a pipeline between the water suction pump and the faucet is increased, the high-voltage switch is disconnected, and the water purifier stops supplying water.

However, in the water purifier, the pressure between the water pump and the water outlet is provided only by the water pump. The water pressure generated by the water pump is low, so that a high-pressure switch with low pressure is selected. For the case that the water intake end of the user is far away from the water purifier, for example, the pipeline machine is far away from the water purifier, the conveying pipeline generates a large resistance to water flow, which results in a higher pressure near the water purifier than at the water intake end, that is, a higher pressure at the high-voltage switch. Therefore, when a user takes water, the pipeline is decompressed, the pressure at the high-voltage switch can be reduced, once the high-voltage switch is closed, the water suction pump is started, the pressure at the high-voltage switch can be increased, and the high-voltage switch is disconnected again. Like this, high-voltage switch opens and stops voluntarily repeatedly, leads to the system unstable to influence the user and get water. Therefore, the existing water purifier cannot be connected with a pipeline machine.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that exists among the prior art at least partially, the utility model provides a water purifier, its main water pipeline including being connected to the delivery port, main water pipeline includes booster pump, reverse osmosis membrane filter core, check valve and the high pressure switch that sets gradually along the rivers direction, the water purifier still includes: a water tank; one end of the water storage pipeline is connected between the reverse osmosis membrane filter element and the one-way valve, the other end of the water storage pipeline is connected to the water tank, the water storage pipeline comprises a water storage electromagnetic valve and a water suction pump, and the water suction pump is used for pumping water from the water tank; and the controller is connected to the booster pump, the high-voltage switch, the water storage electromagnetic valve and the water suction pump, wherein the controller is in the high-voltage switch is started simultaneously when closed the booster pump with the water suction pump, so that the reverse osmosis membrane filter element with the water tank jointly to the delivery port supplies water.

Therefore, the direct drinking water flowing out of the water outlet can be supplied by the two pumps at the same time. Compared with the prior water purifier which can only obtain direct drinking water through the water suction pump, the water outlet quantity of the water outlet is improved on the premise of not changing the structure and the original discharge capacity of the water suction pump. And when the user gets water, the pressure value of the water taking pipeline section can be provided by the booster pump, so that the pressure value in the water taking pipeline section is greatly improved, and therefore, a high-pressure switch with high pressure can still be used. Therefore, even if the water purifier is far away from the water taking end, the middle pipeline has large on-way resistance, the phenomenon that the high-voltage switch works unstably can not occur, and the stability of the water purifier is improved. Furthermore, the utility model discloses do not increase extra device (for example flowmeter) or improve the performance of suction pump in the purifier, consequently can not lead to the cost-push to can not cause the volume increase of purifier.

Illustratively, the water storage solenoid valve has a unidirectional conduction mode and a bidirectional conduction mode, and the controller controls the water storage solenoid valve to be in the bidirectional conduction mode to store water into the water tank when the high-voltage switch is turned off and the booster pump is started; and when the water suction pump works, the water storage electromagnetic valve is controlled to be in the one-way conduction mode so as to supply water from the water tank.

The effect of the above-mentioned function of retaining solenoid valve is exactly to be in one-way conduction mode when the suction pump is followed the water tank water intaking, and user at this moment only need close the switch of delivery port, just can make the main water pipeline produce the high pressure under two pump actions, makes high-voltage switch disconnection through the high pressure, and the controller carries out follow-up action according to the signal of telecommunication that high-voltage switch sent again. This makes the programming of the controller simpler. When the water storage electromagnetic valve is used for taking water, if the water storage electromagnetic valve does not have the function of one-way conduction but has a two-way conduction mode, even if a user closes the switch of the water outlet, high voltage for disconnecting the high-voltage switch cannot be generated because the main water pipeline is communicated with the water storage pipeline. Thus, the high-voltage switch cannot be controlled by directly operating the water outlet. Meanwhile, the water storage electromagnetic valve is in a bidirectional conduction mode when storing water into the water tank and is in a unidirectional conduction mode when supplying water to the water tank, so that double-pipeline water supply can be ensured when taking water; in addition, the direct drinking water made by the booster pump does not flow out from the water outlet but directly flows into the water tank in the water taking process, so that the water taking amount is reduced.

Illustratively, the water storage solenoid valve is a pilot operated solenoid valve.

The pilot-operated solenoid valve has the advantages that in the mode conversion process, the operation is more stable, and the impact of water flow on the valve core in the water storage solenoid valve conversion process can be reduced. The stability of purifier operation in-process has been improved, the noise that the electromagnetic valve that impounds produced in the mode conversion process is reduced, user's use experience has been improved. Compared with a direct-acting electromagnetic valve, the pilot-operated electromagnetic valve has the advantages of low power consumption, frequent electrification, small heat productivity due to long-time electrification and avoidance of damage caused by overheating.

Illustratively, the water tank has a lower limit level gauge connected to the controller, the controller stopping the suction pump when the water tank is out of water.

Therefore, the water pump is mainly protected, the water level in the water tank is prevented from being too low, and the water pump is in an empty suction state. The service life of the water pump is prolonged, and the product quality is also improved. Meanwhile, the power consumption of the water purifier can be reduced.

Illustratively, the water tank has an upper limit level gauge connected to the controller, the controller activating the booster pump to store water to the water tank when the water tank is not full of water and the high-voltage switch is off.

By arranging the upper limit liquid level meter in the water tank, once the water in the water tank is detected to be in a non-full state, the booster pump is controlled to store water in the water tank after a user stops taking water. Therefore, the water in the water tank is in a full state before water is taken by a user at every time, and the use experience of the user is improved.

Illustratively, the water tank has a lower limit level gauge connected to the controller, the controller activating the booster pump to store water to the water tank when the water tank is out of water and the high pressure switch is off.

Therefore, the water level in the water tank can be timed only by reaching the lower limit liquid level, namely, the water tank is stored with water only when the water tank is in a water shortage state, the frequent water storage of the water purifier is avoided, the booster pump works frequently, and the service life of the booster pump is prolonged.

Illustratively, the water tank has an upper limit level gauge connected to the controller, and the controller stops the booster pump when the water tank is full.

Like this, can control the booster pump to the water storage capacity in the water tank, prevent that the water that holds in the water tank is too much, and overflow, influence user's use and experience.

Illustratively, the water purifier further comprises a water inlet solenoid valve located before the booster pump on the main water line, the water inlet solenoid valve being connected to the controller.

The water inlet electromagnetic valve is opened to feed water when the water purifier makes water or washes the water, and is closed to feed water when standby or power failure, so that the waste water is prevented from flowing for a long time, and the aim of not wasting water when the water purifier does not work is fulfilled.

Illustratively, a suction pump is located between the water storage solenoid valve and the water tank.

Under the normal condition, the water suction port of the water suction pump is larger than the drift diameter of the water pressure port, so that the water suction path of the water suction pump is smooth, and the normal working efficiency of the water suction pump is ensured. The water storage electromagnetic valve is arranged at the downstream of the water suction pump, so that the water storage electromagnetic valve is prevented from forming resistance at a water suction port of the water suction pump, and the normal work of the water suction pump is not influenced.

Illustratively, the water outlet comprises a line machine interface and/or the faucet interface.

Therefore, the water outlet of the water purifier can be connected with various devices or devices, the applicability is high, and various choices can be provided for users.

Exemplarily, the purifier still includes leading filter core and/or rearmounted filter core, leading filter core sets up before the booster pump, rearmounted filter core sets up behind high pressure switch.

Leading filter core is the first coarse filtration equipment to the purifier, can get rid of visible solid matter impurity in the pipeline, mainly has rust, silt, alga, colloid etc. and plays positive guard action to floor heating pipe, domestic tap, electrical apparatus etc.. The rear-mounted filter device is arranged at the downstream of the reverse osmosis membrane filter device, and the main function of the rear-mounted filter device is that in order to improve the taste, the active carbon in the rear-mounted filter element can adsorb peculiar smell, so that water becomes sweet and delicious, and the use experience of a user is improved.

A series of concepts in a simplified form are introduced in the disclosure, which will be described in further detail in the detailed description section. The summary of the invention 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 present invention are used herein as part of the present invention for understanding the present invention. There are shown in the drawings, embodiments and descriptions thereof, which are used to explain the principles of the invention. In the drawings, there is shown in the drawings,

fig. 1 is a schematic water path diagram of a water purifier according to an exemplary embodiment of the present invention; and

fig. 2 is a schematic circuit diagram of a water purifier according to an exemplary embodiment of the present invention.

Wherein the figures include the following reference numerals:

100. a water purifier; 110. a water outlet; 111. a pipeline machine interface; 112. a faucet interface; 200. a main water line; 201. a water intake pipe section; 210. a booster pump; 220. a reverse osmosis membrane filter element; 230. a one-way valve; 240. a high voltage switch; 250. a water inlet electromagnetic valve; 260. a front filter element; 270. a post-positioned filter element; 300. a water storage pipe; 310. a water tank; 311. a lower limit level gauge; 312. an upper limit liquid level meter; 320. a water pump; 330. a water storage solenoid valve; 900. and a controller.

Detailed Description

In the following description, numerous details are provided to provide a thorough understanding of the present invention. One skilled in the art, however, will understand that the following description illustrates only a preferred embodiment of the invention and that the invention may be practiced without one or more of these details. In addition, some technical features that are well known in the art are not described in detail in order to avoid obscuring the present invention.

As shown in fig. 1, the present invention provides a water purifier 100, which comprises a main water pipeline 200 and a water storage pipeline 300.

The main water lines 200 are the main water production and water intake lines of the water purifier 100. A booster pump 210, a reverse osmosis membrane cartridge 220, a check valve 230, and a high pressure switch 240 are sequentially provided in the main water line 200 along the direction of water flow. The water purifier 100 has a water outlet 110. The main water line 200 is connected to the water outlet 110. The user can receive direct drinking water through the water outlet 110. The outlet 110 may be connected to a mechanical tap or an electrically controlled water valve. For clarity of the following description, the main water line 200 is divided into a water production line section at the front stage and a water intake line section 201 at the rear stage by a check valve 230. The water intake line segment 201 communicates to a user's intake end, such as a faucet or a line machine.

The booster pump 210 functions to increase the pressure of water entering the water purifier 100, so that the water with a certain pressure passes through the reverse osmosis membrane filter element 220 and is filtered by the reverse osmosis membrane filter element 220 to generate drinkable direct drinking water. The produced direct drinking water flows out of the water outlet 110 through the check valve 230 and the high pressure switch 240. The reverse osmosis membrane filter element 220 is a prior art, and the filtering process by the reverse osmosis membrane filter element 220 is a technical means well known to workers in the field, and the specific principle is not described in detail.

The opening direction of the check valve 230 is from the reverse osmosis membrane filter element 220 to the water outlet 110, so that the water in the main water pipeline 200 can be prevented from flowing backwards, and meanwhile, the check valve 230 also has a certain pressure maintaining function, so that when water is not taken from the water taking end, a certain pressure can be maintained in the water taking pipeline section 201 and the pipeline between the water outlet 110 and the water taking end. Since the intake line segment 201 is in communication with the intake end, when the pressure of the intake line segment 201 is referred to later, those skilled in the art will appreciate that the pressure between the outlet 110 and the intake end is also the same.

The high pressure switch 240 is a pressure switch that changes its operation state according to the magnitude of the pressure value in the pipeline. In this water purifier 100, the high-pressure switch 240 is located in the water intake line section 201 of the main water line 200. The water intake line segment 201 has one end connected to the check valve 230 and the other end connected to the water outlet 110. The high voltage switch 240 has two operating states, open and closed. When a user takes water from the water intake, the pressure in the water intake pipe section 201 where the high-pressure switch 240 is located is reduced and is lower than the set value of the high-pressure switch 240, the high-pressure switch 240 is closed, and at the same time, a closing electric signal is emitted. When the user finishes taking water, the pressure in the water taking pipeline section 201 where the high-voltage switch 240 is located rises and reaches the set value of the high-voltage switch 240, the high-voltage switch 240 is turned off, and simultaneously, a turn-off electric signal is sent out.

The water purifier 100 further includes a water storage line 300 having one end connected between the reverse osmosis membrane cartridge 220 and the check valve 230 and the other end connected to a water tank 310. The water storage line 300 also includes a suction pump 320 and a water storage solenoid valve 330.

Illustratively, the suction pump 320 is located between the water storage solenoid valve 330 and the water tank 310. In general, the water suction port of the water pump 320 is larger than the drift diameter of the water outlet, which is to ensure that the water suction path of the water pump 320 is smooth and the normal working efficiency of the water pump 320 is ensured. The water storage solenoid valve 330 is disposed downstream of the water pump 320, so as to avoid the water storage solenoid valve 330 forming resistance at the water suction port of the water pump 320 and affecting the normal operation of the water pump 320. Of course, the positions of the water storage solenoid valve 330 and the water pump 320 may be interchanged.

The water storage solenoid valve 330 may control the on and off of the water storage line 300 and the main water line 200. A suction pump 320 is used to pump water from the water tank 310 into the main water line 200.

As shown in fig. 2, the water purifier 100 further includes a controller 900 connected to the booster pump 210, the high-pressure switch 240, the water storage solenoid valve 330, and the suction pump 320. When the high-pressure switch 240 is closed, that is, an electric signal for closing the high-pressure switch is received, the controller 900 activates the booster pump 210 and the suction pump 320 so that water is supplied from the reverse osmosis membrane cartridge 220 and the water tank 310 to the water outlet 110.

Illustratively, the water purifier 100 also includes a water inlet solenoid valve 250 located on the main water line 200 before the booster pump 210. The water inlet solenoid valve 250 is connected to the controller 900. The water inlet solenoid valve 250 may have only two on/off states, and the operation state of the water inlet solenoid valve 250 may be linked with the booster pump 210, that is, the booster pump 210 and the water inlet solenoid valve 250 are simultaneously turned on and off. The water inlet electromagnetic valve 250 opens water inlet when water is produced or washed, and closes water inlet when standby or power failure, so that the waste water is prevented from flowing for a long time, and the purpose of not wasting water when the water purifier does not work is achieved.

Illustratively, the water purifier 100 further includes a pre-filter 260 and/or a post-filter 270, the pre-filter 260 being disposed before the booster pump 210, and the post-filter 270 being disposed after the high-pressure switch 240. Leading filter core 260 is the first coarse filtration equipment to the purifier, can get rid of visible solid matter impurity in the pipeline, mainly has rust, silt, alga, colloid etc. and plays positive guard action to floor heating pipe, domestic tap, electrical apparatus etc.. The rear filter element 270 is arranged at the downstream of the reverse osmosis membrane filtering device, and the main function of the rear filter element is to improve the taste, the active carbon in the rear filter element 270 can adsorb peculiar smell, so that the water becomes sweet and delicious, and the use experience of a user is improved.

For the convenience of understanding the water purifier 100 provided by the present invention, the working process of the water purifier 100 and the linkage relationship between the components inside the water purifier will be described in detail below.

When the water purifier 100 is in the standby state, the user does not take water, the pressure of the water outlet 110 is not released, the booster pump 210 and the water pump 320 do not work, and the prepared direct drinking water is stored in the water tank 310. At this time, the water intake pipe section 201 between the check valve 230 and the water outlet 110 has a high pressure therein, and the high pressure switch 240 is in an off state. The process of storing water in the water tank 310 and the process of generating high pressure between the check valve 230 and the water outlet 110 will be described in detail below.

The user begins to take water, opening the faucet, and now the outlet 110 is vented to atmosphere, causing the pressure from the check valve 230 to the outlet 110 to drop. The high-pressure switch 240 detects a pressure drop of the water intake line segment 201, the high-pressure switch 240 is switched from an open state to a closed state, and transmits a closing electric signal to the controller 900. After receiving the closing electric signal, the controller 900 starts the booster pump 210 and the suction pump 320, and controls the water storage solenoid valve 330 to conduct the water storage pipe 300, so that the water tank 310 is communicated with the main water pipe 200. The direct drinking water is obtained through two modes: one is that the suction pump 320 pumps the prepared direct drinking water out of the water tank 310 to the water outlet 110; the other is direct drinking water newly prepared by the booster pump 210 through the reverse osmosis membrane filter element 220.

Thus, the direct drinking water from the water outlet 110 can be supplied by two pumps at the same time. Compared with the conventional water purifier which can only obtain direct drinking water through the water suction pump 320, the water outlet quantity of the water outlet 110 is increased on the premise of not changing the structure and the original discharge capacity of the water suction pump 320, and further the water outlet quantity of the water taking end is increased.

Typically, the faucet connected to the water intake may be a mechanical faucet. It is desirable that the water storage solenoid valve 330 also have a unidirectional conduction mode and a bidirectional conduction mode. And the controller 900 controls the water storage solenoid valve 330 to be in the bidirectional conduction mode when the high-voltage switch 240 is turned off and the booster pump 210 is activated. In this state, the water is stored in the water tank 310 by the water purifier 100. The controller 900 controls the water storage solenoid valve 330 to be in the one-way conduction mode when the water suction pump 320 is operated. In this state, a process of supplying water from the water tank 310 is performed.

The water storage solenoid valve 330 may have a cutoff mode in addition to the unidirectional conduction mode and the bidirectional conduction mode described above. Such a solenoid valve typically has two functions, a two-way valve and a one-way valve, and the switching between these two functions may be accomplished by operation of the solenoid of the reservoir solenoid valve 330 by the controller 900. When the solenoid valve is switched to the two-way valve function, it is in the two-way conduction mode. When the solenoid valve is switched to the check valve function, the check valve function is the same as a normal check valve, i.e. it requires a positive pressure to conduct. That is, in the check valve function, it has a one-way communication function from the water tank 310 to the main water line 200 and a cutoff function from the main water line 200 to the water tank 310. The type of such a reservoir solenoid valve 330 is numerous and well known to those skilled in the art and will not be described in detail herein.

In one embodiment, a load cell may be provided under the water tank 310 to determine whether the water tank 310 is storing or supplying water. The load cell may detect the weight of the water in the water tank 310 and the water in the water tank 310 in real time. During the process of the booster pump 210 storing water into the water tank 310, when the detected value of the load cell reaches the set value, that is, when the water tank 310 is full of water, the load cell will send an electric signal to the controller 900. The controller 900 controls the booster pump 210 to stop operating, i.e., stop storing water into the water tank 310. Once the weight of the water tank 310 is no longer increased, the water storage solenoid valve 330 will be disengaged from the two-way conduction mode. The water storage solenoid valve 330, which is out of the bidirectional communication mode, may function as a one-way valve that is communicated in one direction to draw water from the water tank 310 when the water drawing pump 320 is operated (i.e., when the weight of the water tank 310 is reduced). At this time, the water storage solenoid valve 330 is switched to the one-way conduction mode.

Alternatively, the water level meter may be used to determine whether the water tank 310 is in a water storage state, a water supply state, or a standby state (a non-continuous state). This embodiment will be described in detail later.

The function of the water storage solenoid valve 330 is to be in a one-way conduction mode when the water pump 320 draws water from the water tank 310, and at this time, a user only needs to close the switch of the water outlet 110, so that the main water pipeline 200 generates high pressure under the action of the two pumps, the high-pressure switch 240 is turned off through the high pressure, and the controller 900 performs subsequent actions according to an electric signal sent by the high-pressure switch 240. This may make the programming of the controller 900 simpler. On the other hand, if the water storage solenoid valve 330 does not have a unidirectional function but a bidirectional mode, even if the user closes the switch of the water outlet 110, the high voltage that turns off the high voltage switch 240 is not generated because the main water line 200 and the water storage line 300 are connected. Thus, the high-voltage switch 240 cannot be controlled by directly operating the water outlet 110. Meanwhile, the water storage solenoid valve 330 is in a bidirectional conduction mode when storing water to the water tank 310 and in a unidirectional conduction mode when supplying water to the water tank 310, so that dual-pipeline water supply can be ensured when taking water; in addition, the direct drinking water produced by the booster pump 210 does not flow out from the water outlet 110 but directly flows into the water tank 310 in the water taking process, so that the water taking amount is reduced.

For example, the water storage solenoid valve 330 may be a pilot type solenoid valve. The pilot-operated solenoid valve has the advantages of more stable operation in the mode switching process and capability of reducing the impact of water flow on the valve core in the switching process of the water storage solenoid valve 330. The stability of purifier 100 operation in-process has been improved, the noise that the electromagnetic valve 330 that impounds produced in the mode conversion in-process is reduced, user's use experience has been improved. Compared with a direct-acting electromagnetic valve, the pilot-operated electromagnetic valve has the advantages of low power consumption, frequent electrification, small heat productivity due to long-time electrification and avoidance of damage caused by overheating.

In the above embodiment, the operation of the water purifier 100 is as follows. The user stops getting water and closes the faucet at the water getting end. After closing the faucet, the outlet 110 is no longer in communication with the atmosphere. But the booster pump 210 and the suction pump 320 continue to operate. Since the water storage solenoid valve 330 functions as a check valve, the direct drinking water newly prepared by the pressurizing pump 210 and the water pumped from the water tank by the water pump 320 only flow to the water outlet 110 through the main water pipe 200, so that the water flows provided by the two pumps generate high pressure in the main water pipe 200. When the pressure generated in the main water line 200 reaches the set value of the high pressure switch 240, the high pressure switch 240 is turned off. When the controller 900 receives the off signal of the high voltage switch 240, the booster pump 210 and the suction pump 320 enter different operation modes according to specific situations, and the operation of the two pumps will be described in detail below. Since the check valve 230 is provided between the reverse osmosis membrane cartridge 220 of the main water line 200 and the high pressure switch 240, a high pressure is generated in a line from the check valve 230 to the water outlet 110, that is, the water intake line segment 201. The pressure value in the section of piping depends on which of the booster pump 210 and the suction pump 320 is at a higher pressure. As is well known, the booster pump 210 is typically at a higher pressure than the suction pump 320 in order to pass unfiltered water through the reverse osmosis membrane cartridge 220, so the pressure in the water intake line segment 201 is provided by the booster pump 210.

In the existing water purifier, the direct drinking water produced by the reverse osmosis membrane filter element 220 firstly enters the water tank 310, and then the water in the water tank 310 is pumped to the water outlet 110 by the water pump 320 for the user to use. The amount of pressure generated at the high pressure switch 240 is provided only by the suction pump 320 even though the user stops taking water, closes the faucet. Therefore, in the conventional water purifying machine, when the user stops taking water and closes the faucet, the pressure value of the water taking pipe segment 201 is provided only by the water pump 320, so that the pressure value of the pipe segment is relatively low, and therefore, only the high-pressure switch with relatively low pressure can be selected.

This causes a problem in that the amount of change in the pressure value of the water intake line section 201 is relatively small during the process of opening and closing the faucet by the user. It is easy to make the high voltage switch 240 not receive a significant change signal, resulting in sluggish reflection of the high voltage switch 240. If the distance from the water purifier 100 to the faucet is further increased, the on-way resistance caused by the intermediate pipeline (when the fluid flows through a straight pipe with a certain pipe diameter, the resistance generated by the internal friction of the fluid is proportional to the length of the path) is also increased. This may cause the reason that the high voltage switch 240 is repeatedly and automatically turned on and off when the user's water intake pipeline is depressurized as mentioned in the background art.

To solve the above problem, a higher pressure suction pump 320 may be selected; or a high-precision flowmeter is arranged near the water outlet 110, and the start and stop of the water suction pump are controlled by the water flow change signal of the flowmeter. But this increases the cost of the product or increases the volume of the product due to the improved performance of the product.

Through the design of the structure of the above water purifier 100, when a user takes water, the pressure value of the water intake pipe section 201 can be provided by the booster pump 210, which greatly increases the pressure value in the water intake pipe section 201, so that a high-pressure switch of high pressure can still be used. Thus, even if the water purifier 100 is far away from the water outlet 110, which causes the middle pipeline to have large on-way resistance, the phenomenon that the pressure switch is repeatedly started and stopped will not occur, and the high-voltage switch 240 is unstable in operation. Meanwhile, the cost and the product volume of the water purifier cannot be increased due to the addition of an additional device (such as a flowmeter) in the water purifier 100 or the improvement of the performance of the water suction pump 320.

As described above, the determination of whether the water tank 310 is storing water or supplying water is performed by the load cell, and optionally, a level gauge may be provided on the water tank 310 to determine the storing water and the supplying water. The level gauge may be a level sensor, a float level gauge, a combination of a hall switch and a float, etc. The liquid level meter can detect the water level in the water tank 310, transmit an electric signal for detecting the water level to the controller 900, and control each device in the water purifier according to the electric signal received by the controller 900. The working principle of the liquid level meter is well known to those skilled in the art, and is not the focus of the present invention, and will not be described in detail.

In one embodiment, the water tank 310 has a lower limit level gauge 311, the lower limit level gauge 311 is connected to the controller 900, and the controller 900 stops the suction pump 320 when the water tank lacks water. The lack of water means that the liquid level in the water tank 310 is lower than the lower limit of the liquid level. The suction pump 320 may not work properly when the water tank 310 runs short of water. For example, the lower limit level gauge 311 may be a level gauge that sends an electrical signal to the controller 900 only when the liquid level in the water tank 310 is below the lower level limit. That is, only when the water level in the water tank 310 reaches the lower limit level gauge 311, the lower limit level gauge 311 transmits an electric signal of water shortage to the controller 900.

When a user takes water, the booster pump 210 and the reverse osmosis membrane filter element 220 deliver freshly prepared direct drinking water to the main water line 200, and the suction pump 320 pumps water from the water tank 310 to the main water line 200. If the lower limit liquid level meter 311 detects that the water level in the water tank 310 reaches the lower limit liquid level during the process of taking water by the user, it indicates that the water tank 310 is in a water shortage state. The lower limit level gauge 311 sends an electrical signal of water shortage to the controller 900. The controller 900 controls the water pump 320 to stop working after receiving the electric signal.

This is primarily to protect the pump 320 from the water level in the tank 310 being too low and the pump 320 will be empty. The service life of the water pump 320 is prolonged, and the product quality is also improved. Meanwhile, the power consumption of the water purifier can be reduced.

When the water tank 310 is short of water and the user is still getting water, the booster pump 210 continues to work, but the direct drinking water taken by the user from the water outlet 110 is newly prepared from the booster pump 210 and the reverse osmosis membrane filter element 220. The water flow rate achieved is also relatively low.

When the user closes the faucet and stops taking water, the booster pump 210 continues to operate, and fresh direct drinking water flows into the main water pipeline 200.

At this time, since the high-pressure switch 240 is still closed, the water storage solenoid valve 330 has only a function of a check valve. So that the freshly prepared drinking water flows into the main water line 200, and when the pressure in the main water line 200, i.e., the pressure in the intake line section 201 reaches the set value of the high pressure switch 240, the high pressure switch 240 is turned off.

When the controller 900 receives the water shortage electric signal from the lower limit level gauge 311, the high-voltage switch 240 is turned off and the water storage solenoid valve 330 is switched to the bidirectional conduction mode to store water in the water tank 310, and the booster pump 210 continues to operate.

At this time, the water path in the water purifier 100 is such that the main water path 200 is connected to the water storage path 300 and the water intake path 201 is cut off. The new direct drinking water produced by the pressurizing pump 210 flows into the water tank 310. As described above, the water tank 310 may be further provided with a means for judging whether the water in the water tank 310 is full. Such as the load cell mentioned above, may detect the weight of the water in the water tank 310 and the water in the water tank 310 in real time. When the detected value of the load cell reaches a set value, i.e., the weight of the water tank 310 that is full, during the water storage of the water tank 310 by the booster pump 210, the load cell sends an electric signal to the controller 900. The controller 900 controls the booster pump 210 to stop working, i.e. stop storing water in the water tank, and then the water storage solenoid valve 330 will also be out of the two-way conduction mode to prepare for the next water intake.

Optionally, the water tank 310 may also have an upper limit level gauge 312. The upper limit level gauge 312 is used to detect whether the water tank 310 is in a full water state. The full water means that the liquid level in the water tank 310 reaches the upper limit liquid level. The upper limit level gauge 312 is similar to the lower limit level gauge 311, both of which may be selected to be the same or different kinds of level gauges. Illustratively, the upper limit level gauge 312 may be the same type of level gauge as the lower limit level gauge 311, which may facilitate the overall design of the product. The upper limit level gauge 312 is connected to the controller 900, and the controller 900 activates the booster pump 210 to store water into the water tank 310 when the water tank 310 is short of water and the high voltage switch 240 is turned off.

If the user takes water, the water tank 310 is in a full state. When a user opens the faucet to start water taking, the high-voltage switch 240 is closed, the water storage electromagnetic valve 330 is in a one-way conduction state, and the booster pump 210 and the water suction pump 320 work simultaneously. The direct drinking water taken by the user from the water taking end comes from the pressurizing pump 210 newly made and the water pump 320 pumped out from the water tank 310.

After the pump 320 pumps the drinking water from the tank 310, the water level is lower than the upper limit level gauge 312, and the upper limit level gauge 312 sends an electric signal to the controller 900 that the water is not full. When the user closes the faucet and stops taking water, the booster pump 210 and the water pump 320 continue to work, the water storage solenoid valve 330 is disconnected from the bidirectional conduction state, the main water pipeline 200 generates high pressure, and the high pressure switch 240 is turned off when the set value of the high pressure switch 240 is reached. The suction pump 320 stops operating while the high voltage switch 240 is open. Because the controller 900 also receives the signal of water shortage from the upper limit liquid level meter 312, the water storage solenoid valve 330 is controlled to switch to the bidirectional conduction mode while the high-voltage switch 240 is turned off. The booster pump 210 may continue to operate to feed the newly produced direct drinking water into the tank 310. Therefore, before a user takes water, the water in the water tank 310 is in a full state, and the use experience of the user is improved.

Alternatively, the booster pump 210 may be stopped after the high voltage switch 240 is turned off, and then the controller 900 starts the booster pump 210 again.

In embodiments where the water tank 310 has a lower limit level gauge 311, the controller 900 activates the booster pump 210 to store water to the water tank 310 when the water tank 310 is out of water and the high pressure switch 240 is off.

Before the user takes water, the water tank 310 is in a full state. When a user opens the faucet to start water taking, the high-voltage switch 240 is closed, the water storage electromagnetic valve 330 is in a one-way conduction state, and the booster pump 210 and the water suction pump 320 work simultaneously. The direct drinking water taken by the user from the water outlet 110 comes from the pressurizing pump 210 newly made and the water pumped by the water pump 320 from the water tank 310.

After the pump 320 pumps the drinking water from the tank 310, the water level is lower than the upper limit level, and the upper limit level gauge 312 sends an electric signal to the controller 900 that the water is not full. If the water level in the tank 310 is below the upper limit level, but has not reached the lower limit level, the user closes the faucet and stops drawing water. The booster pump 210 and the water pump 320 continue to operate, the water storage solenoid valve 330 is still in a one-way conduction state, the main water pipe 200 generates high pressure, and the high pressure switch 240 is turned off when the set value of the high pressure switch 240 is reached. The booster pump 210 and the suction pump 320 stop operating while the high-voltage switch 240 is turned off.

If, on the other hand, the water level in the water tank 310 has reached the lower limit level during the user's taking of water, the lower limit level gauge 311 sends an out-of-water signal to the controller 900. The controller 900 will control the water pump 320 to stop working to avoid the water pump 320 being in an empty state. At this time, the direct drinking water obtained from the water outlet 110 by the user comes from the direct drinking water newly made by the booster pump 210.

The user closes the faucet and stops fetching water. The booster pump 210 is still in operation, and continues to produce water into the main water line 200 until the pressure in the main water line 200 reaches the value set by the high pressure switch 240, and the high pressure switch 240 is turned off. After the controller 900 receives the electrical signal of the high-voltage switch 240 being turned off, since the lower limit liquid level meter 311 also sends the electrical signal of water shortage to the controller 900, the controller 900 controls the water storage solenoid valve 330 to switch to the bidirectional conduction mode after receiving the electrical signal of the high-voltage switch 240 being turned off. In this case, the main water line 200 and the water storage line 300 are connected, and the water intake line 201 is closed. The direct drinking water produced by the pressurizing pump 210 is stored in the water tank 310. If the liquid level in the water tank 310 is not below the lower limit level when the user closes the faucet, the booster pump 210 stops operating.

Therefore, the water level in the water tank 310 can be stored in the water tank 310 only when the water level reaches the lower limit liquid level meter 311, that is, when the water is in a water shortage state, so that the frequent operation of the booster pump 210 due to the frequent water storage of the water purifier 100 is avoided, and the service life of the booster pump 210 is prolonged.

Further, in embodiments where the water tank 310 has an upper level gauge 312, the controller 900 stops the booster pump 210 from operating when the water tank 310 is full. That is, in the water storage process, when the water level in the water tank 310 reaches the upper limit level gauge 312, the water storage into the water tank 310 is stopped.

Therefore, the water storage amount of the booster pump 210 in the water tank 310 can be controlled, and the water stored in the water tank 310 is prevented from overflowing to influence the use experience of a user.

In addition to the above, there is a state where water purifier 100 takes direct drinking water by a user during water storage into water tank 310. This will be described in detail below.

At this time, the high voltage switch 240 is in an off state, the water storage solenoid valve 330 is in a bidirectional conduction mode, and the pressurizing pump 210 operates to prepare direct drinking water into the water tank 310. If the user opens the water outlet 110 at this time, the high voltage switch 240 is closed as described above. The water storage solenoid valve 330 is switched to the one-way conduction mode, the booster pump 210 stops the operation of storing water into the water tank 310, and the water suction pump 320 is started to enter the water intake state. The water intake state is as described above.

At this time, the user stops getting water, and when the water outlet 110 is closed, the high-voltage switch 240 is turned off, and sends an electric signal to the controller 900, and the controller 900 determines according to the water level. If the water level in the water tank 310 does not reach the upper limit level gauge 312, the previous water storage work is continued. The booster pump 210 will continue to operate and control the reservoir solenoid valve 330 to switch to the two-way conduction mode, storing water in the tank 310. Until the water level reaches the upper limit liquid level meter 312, the water storage operation is stopped, and the water purifier 100 enters a standby state.

It is also possible that the user stops getting water, and after turning off the switch of the water outlet 110, the high voltage switch 240 is turned off, and sends an electric signal to the controller 900, and the controller 900 makes a judgment according to the water level. If the water level in the water tank 310 is still higher than the lower limit liquid level meter 311, the water storage operation is stopped, and the water purifier 100 enters a standby state.

If the water level is lower than the lower limit level gauge 311, the previous water storage operation is continued. The booster pump 210 continues to operate, controls the water storage solenoid valve 330 to switch to the bidirectional conduction mode, stores water into the water tank 310, stops the water storage operation until the water level reaches the upper limit liquid level meter 312, and the water purifier 100 enters a standby state.

Illustratively, the water outlet 110 includes a line machine interface 111 and/or the faucet interface 112. In daily life, in order to heat or ice the direct drinking water produced by the water purifier 100, a pipeline machine is also connected to the water outlet 110 of the water purifier 100. The difference lies in that the user operates the solenoid valve in the pipeline machine mostly, but the operation process and principle are the same as those of the mechanical faucet, and reference may be made to the above description, and details are not repeated here.

Therefore, the water outlet 110 of the water purifier 100 can be connected with various devices or apparatuses, so that the applicability is high, and various choices can be provided for users.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front", "rear", "upper", "lower", "left", "right", "horizontal", "vertical", "horizontal" and "top", "bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner" and "outer" refer to the interior and exterior relative to the contours of the components themselves.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe the spatial relationship of one or more components or features shown in the figures to other components or features. It is to be understood that the spatially relative terms are intended to encompass not only the orientation of the component as depicted in the figures, but also different orientations of the component in use or operation. For example, if an element in the drawings is turned over in its entirety, the articles "over" or "on" other elements or features will include the articles "under" or "beneath" the other elements or features. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". Further, these components or features may also be positioned at various other angles (e.g., rotated 90 degrees or other angles), all of which are intended to be encompassed herein.

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 described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to 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 more modifications and variations are possible in light of the teaching of the present invention and are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (11)

1. A water purifier (100) comprising a main water line (200) connected to a water outlet (110), the main water line comprising a booster pump (210), a reverse osmosis membrane filter element (220), a one-way valve (230) and a high-pressure switch (240) arranged in sequence along a water flow direction, characterized in that the water purifier further comprises:

a water tank (310):

a water storage line (300) having one end connected between the reverse osmosis membrane cartridge and the one-way valve and the other end connected to the water tank, the water storage line including a water storage solenoid valve (330) and a water pump (320) for pumping water from the water tank; and

a controller (900) connected to the booster pump, the high-voltage switch, the water storage solenoid valve and the water pump, wherein the controller is in the high-voltage switch starts up when closing the booster pump with the water pump, so that the reverse osmosis membrane filter core with the water tank jointly to the delivery port supplies water.

2. The water purifier according to claim 1, wherein the water storage solenoid valve (330) has a one-way conduction mode and a two-way conduction mode, the controller (900) controls the water storage solenoid valve in the two-way conduction mode to store water to the water tank (310) when the high-voltage switch (240) is turned off and the booster pump (210) is activated; and controlling the water storage solenoid valve to be in the one-way conduction mode when the suction pump (320) operates to supply water from the water tank.

3. The water purifier according to claim 1, wherein said water storage solenoid valve (330) is a pilot operated solenoid valve.

4. The water purifier according to claim 1, wherein the tank (310) has a lower limit level gauge (311) connected to the controller (900) which stops the suction pump (320) when the tank is empty of water.

5. The water purifier according to claim 1, wherein the water tank (310) has an upper limit level meter (312) connected to the controller (900) which activates the booster pump (210) to store water to the water tank when the water tank is not full and the high voltage switch (240) is off.

6. The water purifier according to claim 1, wherein the water tank (310) has a lower limit level meter (311) connected to the controller (900) which activates the booster pump (210) to store water to the water tank when the water tank is out of water and the high-pressure switch (240) is turned off.

7. The water purifier as recited in claim 1, characterized in that the water tank (310) has an upper limit level gauge (312) connected to the controller (900) which stops the booster pump (210) when the water tank is full.

8. The water purification machine according to claim 1, further comprising a water inlet solenoid valve (250) on said main water line (200) before said booster pump (210), said water inlet solenoid valve being connected to said controller (900).

9. The water purification machine according to claim 1, wherein said suction pump (320) is located between said water accumulation solenoid valve (330) and said tank (310).

10. Water purifier according to claim 1, wherein the water outlet (110) comprises an in-line machine interface (111) and/or a tap interface (112).

11. The water purification machine according to claim 1, further comprising a pre-filter (260) arranged before the booster pump (210) and/or a post-filter (270) arranged after the high pressure switch (240).

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