CN214360551U

CN214360551U - Water purifier

Info

Publication number: CN214360551U
Application number: CN202022246822.1U
Authority: CN
Inventors: 张涛; 龚圆杰; 廖武华
Original assignee: Chunmi Technology Shanghai Co Ltd
Current assignee: Chunmi Technology Shanghai Co Ltd
Priority date: 2020-10-10
Filing date: 2020-10-10
Publication date: 2021-10-08
Anticipated expiration: 2030-10-10

Abstract

The present disclosure relates to a water purifier, including: the water inlet interface is communicated with a water inlet of the preposed filter element; the water inlet pipeline is communicated with the water outlet of the preposed filter element and the water inlet of the reverse osmosis filter element, and a first electromagnetic valve and a booster pump are arranged on the water inlet pipeline; the wastewater pipeline is communicated with a wastewater outlet and a wastewater interface of the reverse osmosis filter element; the pure water pipeline is communicated with the pure water outlet and the water inlet of the pure water tank and is provided with a second electromagnetic valve; the water inlet of the water pump is communicated with the water outlet of the pure water tank; the return pipeline is communicated with a water outlet and a return water port of the water pump, the return water port is positioned on the water pipeline between the water inlet interface and the water inlet of the reverse osmosis filter element, and a third electromagnetic valve is arranged on the return pipeline; the water outlet pipeline is communicated with a water outlet and a water outlet interface of the water pump, and a fourth electromagnetic valve is arranged on the water outlet pipeline. This technical scheme can avoid the high condition of first cup water TDS value and prevent in the water tank that the pure water of quality of water variation is used by the user because the save time overlength.

Description

Water purifier

Technical Field

The present disclosure relates to the field of water purification technology, and in particular, to a water purifier.

Background

Along with the improvement of living standard of people, people pay more and more attention to water quality sanitation, and the trend that a family is provided with a water purifying device is formed; the existing water purifiers are often divided into under-kitchen water purifiers and table-board water purifiers, but the existing water purifiers have the following defects:

1. when the water purifier is not used for a long time, particles in front of an RO (Reverse Osmosis) membrane in a filter element of the water purifier penetrate through the RO membrane to permeate to a pure water end, so that TDS (Total dissolved solids) of first cup water is high, and user experience is influenced;

2. the prior water purifier with a built-in water tank is not used for a long time, and the water quality in the water tank is poor and cannot be automatically discharged.

SUMMERY OF THE UTILITY MODEL

In order to overcome the problems in the related art, the embodiment of the present disclosure provides a water purifier. The technical scheme is as follows:

according to an aspect of an embodiment of the present disclosure, there is provided a water purifier including: the device comprises a front filter element, a reverse osmosis filter element and a pure water tank; the water purifier further includes:

the water inlet interface is communicated with the water inlet of the preposed filter element;

the water inlet pipeline is communicated with the water outlet of the preposed filter element and the water inlet of the reverse osmosis filter element, and a first electromagnetic valve and a booster pump are arranged on the water inlet pipeline;

the wastewater pipeline is communicated with a wastewater outlet of the reverse osmosis filter element and a wastewater interface;

the pure water pipeline is communicated with the pure water outlet and the water inlet of the pure water tank, and a second electromagnetic valve is arranged on the pure water pipeline;

the water inlet of the water suction pump is communicated with the water outlet of the pure water tank;

the backflow pipeline is communicated with a water outlet and a backflow water port of the water suction pump, the backflow water port is positioned on the water pipeline between the water inlet interface and the water inlet of the reverse osmosis filter element, and a third electromagnetic valve is arranged on the backflow pipeline;

and the water outlet pipeline is communicated with a water outlet and a water outlet interface of the water suction pump, and a fourth electromagnetic valve is arranged on the water outlet pipeline.

In one embodiment, the apparatus further comprises a controller, the controller is connected to the booster pump, the water pump, the first solenoid valve, the second solenoid valve, the third solenoid valve and the fourth solenoid valve, wherein:

the controller is used for controlling the electromagnetic valves to enter a normally closed state, and opening the first electromagnetic valve, the second electromagnetic valve and the booster pump when entering a water making mode; when the water taking mode is started, the fourth electromagnetic valve and the water suction pump are opened; when entering the backflow mode and the drainage mode, the third electromagnetic valve and the water suction pump are opened, wherein the second electromagnetic valve or the booster pump is opened when the backflow water port is between the water inlet of the reverse osmosis filter element and the water inlet of the reverse osmosis filter element.

In one embodiment, a water level detector is arranged in the pure water tank;

the water level detector is connected with the controller and is used for detecting the water level in the pure water tank;

and the controller is used for exiting the water making mode when the water level detector detects that the water level in the pure water tank is higher than a preset high threshold value under the condition of entering the water making mode, and closing the first electromagnetic valve, the second electromagnetic valve and the booster pump.

In one embodiment, further comprising:

and the heating component is positioned on the water outlet pipeline and between the fourth electromagnetic valve and the water outlet interface.

In one embodiment, further comprising:

and the wastewater electromagnetic valve is positioned on the wastewater pipeline and between the wastewater outlet of the reverse osmosis filter element and the wastewater interface.

In one embodiment, further comprising: a post-positioned filter element;

the water inlet of the rear filter element is communicated with the pure water outlet, and the water outlet of the rear filter element is communicated with the water outlet connector.

In one embodiment, two or three of the pre-filter element, the reverse osmosis filter element and the post-filter element are integrated into one composite filter element.

In one embodiment, further comprising: a normal temperature water outlet pipeline;

one port of the normal-temperature water outlet pipeline is connected to a pipeline between the pure water outlet and the second electromagnetic valve, and the other port of the normal-temperature water outlet pipeline is connected to a pipeline between the heating assembly and the water outlet.

In one embodiment, a fifth electromagnetic valve is arranged on the normal-temperature water outlet pipeline.

According to a second aspect of the embodiments of the present disclosure, there is provided a control method of a water purifier, applied to the above-mentioned water purifier, the method including:

when the pure water amount in the pure water tank is smaller than a first pure water amount, entering a water making mode, and opening the first electromagnetic valve, the booster pump and the second electromagnetic valve; when the pure water amount in the pure water tank is higher than a second pure water amount, the pure water tank exits the water making mode, and the first electromagnetic valve, the booster pump and the second electromagnetic valve are closed;

when a user is detected to take water, entering a water taking mode, and starting the water pump and the fourth electromagnetic valve;

when the water intake of a user is not detected after the preset time length is exceeded, entering a drainage mode, starting the water suction pump and the third electromagnetic valve until the water in the pure water tank is drained, exiting the drainage mode, and closing the water suction pump and the third electromagnetic valve;

when the water is not in the excessive water making mode after the second preset time, entering a backflow mode, starting the water suction pump and the third electromagnetic valve, exiting the backflow mode after the third preset time, and closing the water suction pump and the third electromagnetic valve; and under the condition that the second electromagnetic valve or the booster pump is arranged between a backflow water port and the water inlet of the reverse osmosis filter element, the second electromagnetic valve or the booster pump is opened when the water enters a drainage mode and a backflow mode.

According to a third aspect of the embodiments of the present disclosure, there is provided a control apparatus of a water purifier, applied to the above-described water purifier, the apparatus including:

the first control module is used for entering a water making mode when the pure water amount in the pure water tank is smaller than a first pure water amount, and opening the first electromagnetic valve, the booster pump and the second electromagnetic valve; when the pure water amount in the pure water tank is higher than a second pure water amount, the pure water tank exits the water making mode, and the first electromagnetic valve, the booster pump and the second electromagnetic valve are closed;

the second control module is used for entering a water taking mode and starting the water suction pump and the fourth electromagnetic valve when detecting that a user takes water;

the third control module is used for entering a drainage mode when the water intake of a user is not detected after the preset time length is exceeded, starting the water suction pump and the third electromagnetic valve until the water in the pure water tank is drained, exiting the drainage mode, and closing the water suction pump and the third electromagnetic valve;

the fourth control module is used for entering a backflow mode when the water making mode is not entered after the second preset time length is exceeded, starting the water suction pump and the third electromagnetic valve, exiting the backflow mode after the third preset time length is started, and closing the water suction pump and the third electromagnetic valve;

and under the condition that the second electromagnetic valve or the booster pump is arranged between a backflow water port and the water inlet of the reverse osmosis filter element, the second electromagnetic valve or the booster pump is opened when the water enters a drainage mode and a backflow mode.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

the water purifier provided by the embodiment can replace raw water in front of the RO membrane when the water purifier does not produce water for a period of time, so that particles in front of the RO membrane are prevented from penetrating through the RO membrane to a pure water end, and the condition that the TDS of first cup water is high is avoided; when the pure water in the water purifier is not used for a long time, the pure water in the pure water tank is discharged, the pure water with poor water quality due to overlong storage time in the pure water tank is prevented from being used by a user, and the water using experience of the user is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a schematic view illustrating a structure of a water purifier according to an exemplary embodiment.

FIG. 2 is a schematic diagram illustrating a structure of a water purifier according to an exemplary embodiment

Fig. 3 is a schematic structural view illustrating a water purifier according to an exemplary embodiment.

Fig. 4 is a schematic structural view illustrating a water purifier according to an exemplary embodiment.

Fig. 5 is a schematic structural view illustrating a water purifier according to an exemplary embodiment.

Fig. 6 is a schematic structural view illustrating a water purifier according to an exemplary embodiment.

Fig. 7 is a flowchart illustrating a control method of a water purifier according to an exemplary embodiment.

Fig. 8 is a block diagram illustrating a control apparatus of a water purifier according to an exemplary embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "communicate", "connect", and "connect" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present disclosure provides a water purifier, and fig. 1 is a schematic structural view of a water purifier shown according to an exemplary embodiment. As shown in fig. 1, the water purifier 1 includes: the device comprises a front filter element 11, a reverse osmosis filter element 12, a pure water tank 13, a water inlet interface 14, a water inlet pipeline 15, a waste water pipeline 16, a pure water pipeline 17, a water suction pump 18, a return pipeline 19, a water outlet pipeline 20 and a waste water interface 21.

As shown in fig. 1, the water inlet port 14 is communicated with the water inlet of the front filter element 11; the water inlet pipeline 15 is communicated with a water outlet of the preposed filter element 11 and a water inlet of the reverse osmosis filter element 12, and a first electromagnetic valve 22 and a booster pump 23 are arranged on the water inlet pipeline 15; a wastewater pipeline 16 which is communicated with a wastewater outlet of the reverse osmosis filter element 12 and a wastewater interface 21; a pure water pipeline 17 for communicating the pure water outlet with the water inlet of the pure water tank 13, wherein the pure water pipeline 17 is provided with a second electromagnetic valve 24; a water inlet of the water pump 18 is communicated with a water outlet of the pure water tank 13; the return line 19, the intercommunication the delivery port and the backward flow mouth 191 of suction pump 18, the backward flow mouth 191 is located intake interface 14 with between the water inlet of reverse osmosis filter core 12, the example, as shown in fig. 1, this backward flow mouth 191 is located between the water inlet of this booster pump 23 and reverse osmosis filter core 12, of course, this backward flow mouth also can be located between this intake interface 14 and leading filter core 11, or, this backward flow mouth also can be located between this leading filter core 11 and this booster pump 23, etc. as long as this backward flow mouth is located between the water inlet of the intake interface 14 of complete machine and the water inlet of reverse osmosis filter core 12. A third electromagnetic valve 25 is arranged on the return pipeline 19; and the water outlet pipeline 20 is communicated with the water outlet of the water pump 18 and the water outlet interface 1010, and the water outlet pipeline 20 is provided with a fourth electromagnetic valve 26.

Here, the water inlet port 14, the water outlet port 10, and the waste water port 21 are water inlet and outlet ports of the entire water purifier 1, the water inlet port 14 is connected to an outlet of external tap water, and the water outlet port 10 is connected to a faucet for a user to take water. The devices in the water purifier 1 are respectively provided with a water inlet and a water outlet respectively as a preposed filter element 11, a reverse osmosis filter element 12 and a pure water box 13, and are communicated with corresponding pipelines to complete various functions of the water purifier 1, the preposed filter element 11 and the pure water box 13 are provided with a water inlet and a water outlet, and the reverse osmosis filter element 12 is provided with a water inlet, a pure water outlet and a wastewater outlet.

When the water purifier 1 is used, four working modes can be provided: a water making mode, a water taking mode, a backflow mode and a drainage mode.

As shown in fig. 1, in the water preparation mode, the first electromagnetic valve 22, the second electromagnetic valve 24 and the booster pump 23 can be opened, so that tap water can enter the water purifier from the water inlet port 14, and then can enter the pre-filter element 11 from the water inlet port of the pre-filter element 11, after the pre-filter element 11 filters out large-particle impurities and some colored impurities in water, water is output from the water outlet port of the pre-filter element 11, thereby preventing the impurities in water from damaging the post-devices such as the first electromagnetic valve 22, the booster pump 23 and the reverse osmosis filter element 12, and further effectively prolonging the service life of the water purifier. The first electromagnetic valve 22 is a raw water inlet switch, and after the first electromagnetic valve 22 and the booster pump 23 are opened, the raw water filtered by the front filter element 11 enters the reverse osmosis filter element 12 through the water inlet of the reverse osmosis filter element 12 by the boosting of the booster pump 23. The reverse osmosis filter element 12 purifies the raw water and allows the purified water to flow into the purified water pipeline 17 through the purified water outlet, and the filtered wastewater flows into the wastewater pipeline 16 through the wastewater outlet. The second electromagnetic valve 24 on the pure water pipeline 17 is a water inlet switch of the pure water tank 13, and after the second electromagnetic valve 24 is opened, the pure water purified by the reverse osmosis filter element 12 can enter the pure water tank 13 through the water inlet of the pure water tank 13 for storage.

As shown in fig. 1, in the water intake mode, the water pump 18 and the fourth electromagnetic valve 26 can be opened, the fourth electromagnetic valve 26 is a switch of the water outlet 10, and after the water pump 18 pumps out pure water in the pure water tank 13, the pumped pure water can flow out from the water outlet 10 for the user to use because the fourth electromagnetic valve is opened. In the water intake mode, the third electromagnetic valve 25 is closed.

As shown in fig. 1, in the backflow mode, the water pump 18 and the third electromagnetic valve 25 can be opened, the third electromagnetic valve 25 is a backflow switch, after the third electromagnetic valve 25 and the water pump 18 are opened, because the fourth electromagnetic valve 26 is closed and the third electromagnetic valve 25 is opened, the water pump 18 can only pump a portion of pure water in the pure water tank 13 to flow to the water inlet of the reverse osmosis filter element 12 through the third electromagnetic valve 25, so that raw water before the RO membrane of the reverse osmosis filter element 12 can be replaced, and the raw water is discharged from the wastewater outlet of the reverse osmosis filter element 12 under the action of the water pressure supplied by the water pump 18, and then is discharged from the wastewater interface 21. So, the water purifier can get into the backward flow mode when not making water for a long time, replaces the former raw water before the RO membrane, prevents that the particle before this RO membrane from passing the RO membrane and permeating to the pure water end, avoids appearing the higher condition of first cup water TDS, improves user's water experience.

As shown in fig. 1, in the drainage mode, the water pump 18 and the third electromagnetic valve 25 can be opened, the third electromagnetic valve 25 is a backflow switch, after the third electromagnetic valve 25 and the water pump 18 are opened, because the fourth electromagnetic valve 26 is closed and the third electromagnetic valve 25 is opened, the water pump 18 can only pump part of the pure water in the pure water tank 13 to flow to the water inlet of the reverse osmosis filter element 12 through the third electromagnetic valve 25, and discharge the pure water from the wastewater outlet of the reverse osmosis filter element 12 under the pressure, and further discharge the pure water from the wastewater inlet 21. In this way, when the user does not take the pure water in the water purifier for a long time, all the pure water in the pure water tank 13 can be discharged, and the pure water whose water quality is deteriorated due to the storage time being too long in the pure water tank 13 is prevented from being used by the user, thereby improving the user's experience of using water.

The water purifier provided by the embodiment can replace raw water in front of the RO membrane when the water purifier does not produce water for a period of time, so that particles in front of the RO membrane are prevented from penetrating through the RO membrane to a pure water end, the condition that the TDS of first cup water is high is avoided, and the user experience is improved; when the pure water in the water purifier is not used for a long time, the pure water in the pure water tank 13 is discharged, so that the pure water with poor water quality due to the overlong storage time in the pure water tank 13 is prevented from being used by a user, and the water using experience of the user is improved.

In a possible embodiment, the water purifier further comprises a controller (not shown in the figure) which is connected with the booster pump 23, the water pump 18, the first solenoid valve 22, the second solenoid valve 24, the third solenoid valve 25 and the fourth solenoid valve 26, wherein: the controller is used for controlling each electromagnetic valve to enter a normally closed state, and opening the first electromagnetic valve 22, the second electromagnetic valve 24 and the booster pump 23 when entering a water making mode; thus, the water purifier 1 can produce pure water and store the pure water in the pure water tank 13. The controller is used for opening the fourth electromagnetic valve 26 and the water suction pump 18 when entering a water taking mode; thus, the water pump 18 can pump out the pure water stored in the pure water tank 13 to the water outlet 10 for the user to take. When the water purifier enters the backflow mode and the drainage mode, the third electromagnetic valve 25 and the water suction pump 18 are controlled to be opened, so that part of pure water in the pure water tank 13 can be pumped to the water inlet of the reverse osmosis filter element 12 when the water purifier does not produce water for a period of time, raw water in front of an RO (reverse osmosis) membrane of the reverse osmosis filter element 12 is replaced, particles in front of the RO membrane are prevented from penetrating to the pure water end through the RO membrane, the condition that the TDS (total dissolved solids) of first cup water is high is avoided, and user experience is improved; alternatively, when the pure water storage time in the pure water tank 13 is too long, all of the pure water in the pure water tank 13 may be discharged, thereby preventing deterioration of the water quality in the pure water tank 13.

It should be noted that, because of the different positions of the backflow water ports, the devices to be started are different when entering the drainage mode or the backflow mode, and if the backflow water port 191 is located between the booster pump 23 and the water inlet of the reverse osmosis filter element 12 as shown in fig. 1, only the suction pump 18 and the third electromagnetic valve 25 need to be started when entering the drainage mode or the backflow mode. Or, fig. 2 is a schematic structural diagram of a water purifier according to an exemplary embodiment, as shown in fig. 2, the water return port 191 may also be located between the water inlet port 14 and the pre-filter element 11, at this time, the second electromagnetic valve 22 and the booster pump 23 are located between the water return port 191 and the water inlet of the reverse osmosis filter element 12, and the water suction pump 18, the third electromagnetic valve 25, the second electromagnetic valve 22 and the booster pump 23 need to be started when entering the drainage mode or the backflow mode, so that the backflow pure water can reach the water inlet of the reverse osmosis filter element 12 to complete replacement or drainage; of course, if only the booster pump 23 is located between the water return port and the water inlet of the reverse osmosis filter element 12, the water pump 18, the third electromagnetic valve 25 and the booster pump 23 only need to be started when entering the drainage mode or the backflow mode, so that the backflow pure water can reach the water inlet of the reverse osmosis filter element 12, and then the replacement or drainage is completed.

It should be noted that the water purifier does not enter the return mode or the drain mode simultaneously with the water preparation mode and the water intake mode, and the water purifier can only enter the water preparation mode and the water intake mode simultaneously, or enter one of the four modes.

In one possible embodiment, fig. 3 is a schematic structural view of a water purifier shown according to an exemplary embodiment. As shown in fig. 3, a water level detector 131 is provided in the pure water tank 13; the water level detector 131 is connected with the controller and is used for detecting the water level in the pure water tank 13; and the controller is configured to exit the water making mode and close the first electromagnetic valve 22, the second electromagnetic valve 24 and the booster pump 23 when the water level detector 131 detects that the water level in the pure water tank 13 is higher than a preset high threshold value in the case of entering the water making mode.

It should be noted that the controller may be further configured to enter the pure water mode when the water level detector 131 detects that the water level in the pure water tank 13 is lower than a preset low threshold, open the first electromagnetic valve 22, the second electromagnetic valve 24 and the pressurizing pump 23, and enable the water purifier 1 to start producing water and store the produced pure water in the pure water tank 13.

In a possible embodiment, as shown in fig. 3, the water purifier 1 further comprises a heating assembly 27, located on the water outlet pipe 20, between the fourth solenoid valve 26 and the water outlet port 10, for heating the pure water passing through the water outlet pipe 20.

Thus, when the user takes hot water, the heating assembly 27 can be activated, so that the pure water pumped out from the pure water tank 13 can be heated by the heating assembly when passing through the water outlet pipeline, and the user can use the heated pure water to meet the hot water requirement of the user; moreover, the heating assembly is located on the water outlet pipeline, and the water purifier can execute a backflow mode and a drainage mode, so that the TDS of pure water in the heating device can be effectively avoided being higher, and the accumulation of water scales in the heating device is further reduced.

Of course, if the user needs to take pure water at room temperature, the heating element 27 may not be activated, so that the pure water at room temperature pumped from the pure water tank 13 directly passes through the water outlet pipeline without being heated by the heating element, and the user can use the pure water at room temperature.

In one possible embodiment, fig. 4 is a schematic structural view of a water purifier shown according to an exemplary embodiment. As shown in fig. 4, the water purifier further includes a waste water solenoid valve 28 disposed on the waste water line 16 between the waste water outlet of the reverse osmosis filter element 12 and the waste water connection 21.

It should be noted here that the waste water solenoid valve 28 is provided with a water through hole, the waste water solenoid valve 28 may be a normally closed type direct-acting solenoid valve, when in normal use, a valve port of the waste water valve is kept in a closed state, and when the waste water solenoid valve 28 is in the closed state, waste water flowing out of the waste water outlet of the reverse osmosis filter element 12 may flow to the waste water interface 21 through the water through hole.

Here, the waste water solenoid valve 28 may be connected to the controller, and when the water purifier needs to be cleaned, the controller may control the waste water solenoid valve 28 to be powered on to open the valve port for a certain period of time, so as to provide a wider flow channel for waste water, so that a large amount of water can flow through the flow channel quickly, thereby achieving a better purpose of washing the water purifier. In this embodiment, in the backflow mode or the drainage mode, the wastewater solenoid valve 28 also needs to be opened to allow a large amount of raw water or pure water before the RO membrane to rapidly flow through, thereby achieving the purpose of pure water backflow or drainage.

In one possible embodiment, fig. 5 is a schematic structural view of a water purifier shown according to an exemplary embodiment. As shown in fig. 5, the water purifier further includes a post-filter element 29; the water inlet of the rear filter element 29 is communicated with the pure water outlet, and the water outlet of the rear filter element 29 is communicated with the water outlet port 10.

For example, as shown in fig. 5, the water inlet of the post-filter element 29 may be connected to the pure water outlet of the reverse osmosis filter element 12 through the fourth solenoid valve 26, the water pump 18, the pure water tank 13 and the second solenoid valve 24, and the water outlet of the post-filter element 29 may be connected to the water outlet 10 through the heating assembly 27.

Of course, the water inlet of the post-filter element 29 can also be directly connected to the pure water outlet through the second electromagnetic valve 24, and at this time, the water outlet of the post-filter element 29 can be connected to the water outlet 10 through the pure water tank 13, the water pump 18, the fourth electromagnetic valve 26 and the heating assembly 27. It should be noted that the post-filter 29 may be connected to any one of the pure water path 17 and the effluent path 20, and is not limited herein.

In a possible embodiment, two or three of the pre-filter 11, the reverse osmosis filter 12 and the post-filter 29 are integrated into one composite filter.

For example, the front filter element 11 and the rear filter element 29 may be integrated into a front composite filter element, the reverse osmosis filter element 12 and the rear filter element 29 may be integrated into a reverse osmosis composite filter element, or the front filter element 11, the reverse osmosis filter element 12 and the rear filter element 29 may be integrated into a reverse osmosis composite filter element. The waterway relation between the integrated filter element and other components is still the waterway relation described above, and only two or three filter elements are placed in one filter element shell to form the double-core water purifier or the single-core water purifier.

In one possible embodiment, fig. 6 is a schematic structural view of a water purifier shown according to an exemplary embodiment. As shown in fig. 6, the water purifier 1 is further provided with a normal temperature water outlet pipeline 30; one port of the normal temperature water outlet pipeline 30 is connected with the pipeline between the pure water outlet and the second electromagnetic valve 24, and the other port is connected with the pipeline between the heating component 27 and the water outlet interface 10.

Therefore, the pure water purified by the reverse osmosis filter element 12 can enter the normal temperature water outlet pipeline 30 from the pure water outlet of the reverse osmosis filter element 12, and then flow to the water outlet interface 10 from the normal temperature water outlet pipeline 30, without being heated by the heating component 27, so that the user can use the normal temperature pure water.

It should be noted that the switch of the normal temperature water outlet pipeline 30 may be a mechanical faucet, and when a user turns on the mechanical faucet to use normal temperature pure water, the normal temperature pure water in the normal temperature water outlet pipeline 30 can directly flow from the water outlet interface 10 to the mechanical faucet for the user to use. At this time, a hot water faucet may be further provided, and when the user opens the hot water faucet to use hot water, the controller may open the water pump 18 and the fourth electromagnetic valve 26, so that normal-temperature pure water flows to the heating assembly 27 to be heated and then flows from the water outlet 10 to the hot water faucet for the user to use.

In a possible embodiment, as shown in fig. 6, a fifth electromagnetic valve 31 is disposed on the normal-temperature water outlet pipeline 30.

At this time, a faucet may be provided to control the use of hot and cold water, and when the user operates the faucet and turns left to indicate to take hot water, the controller may open the water pump 18 and the fourth solenoid valve 26, so that normal temperature pure water flows to the heating assembly 27 for heating and then flows from the water outlet 10 to the faucet for use by the user. When the user operates the faucet and indicates to take normal temperature water by twisting right, the controller can open the fifth electromagnetic valve 31, so that normal temperature pure water produced by the reverse osmosis filter element 12 flows to the water outlet interface 10 through the normal temperature pipeline 30, and then flows out from the faucet for the user to use.

The present disclosure also provides a control method of a water purifier, applied to any one of the above-described water purifiers, and fig. 7 is a flowchart illustrating a control method of a water purifier according to an exemplary embodiment. As shown in fig. 7, the method includes the following steps S701 to S704.

In step S701, when the pure water amount in the pure water tank is smaller than a first pure water amount, entering a water production mode, and turning on the first electromagnetic valve, the booster pump, and the second electromagnetic valve; and when the pure water amount in the pure water tank is higher than a second pure water amount, the pure water tank exits the water making mode, and the first electromagnetic valve, the booster pump and the second electromagnetic valve are closed.

Here, the detection of the amount of pure water in the pure water tank may be detected by a water level detector, which may include a high water level detector that may detect whether the water level in the pure water tank 13 is higher than a preset high threshold value and a low water level detector that may detect whether the water level in the pure water tank 13 is lower than a preset low threshold value. When the low water level detector detects that the water level in the pure water tank is lower than a preset low threshold value, and the pure water amount in the pure water tank is lower than a first pure water amount, the water amount in the pure water tank is indicated to be too small, in order to prevent the pure water outlet speed from being too slow when a user takes water, the pure water tank can enter a water making mode, and the first electromagnetic valve, the booster pump and the second electromagnetic valve are opened, so that the pure water made by the reverse osmosis filter element 12 enters the pure water tank 13 for storage. When the high water level detector detects that the water level in the pure water tank is higher than a preset high threshold value, the pure water amount in the pure water tank is higher than a second pure water amount, which indicates that the water amount stored in the pure water tank is enough, at the moment, the water making mode can be exited, the first electromagnetic valve, the booster pump and the second electromagnetic valve are closed, and water making is stopped.

In step S702, when it is detected that a user fetches water, a water fetching mode is entered, and the water pump and the fourth electromagnetic valve are turned on.

Here, it is possible to detect that the user takes water by detecting the operation of the water taking faucet by the user. When the pure water tank enters the water taking mode, if the pure water in the pure water tank is reduced to be lower than the first pure water amount due to excessive water taking, the pure water tank can enter the water making mode simultaneously, the first electromagnetic valve, the booster pump and the second electromagnetic valve are opened, water making is started, and pure water is continuously stored in the pure water tank and is used by a user.

Here, when the water purifier 1 is provided with the heating unit 27, it is necessary to activate the heating unit 27 when it is detected that the user takes hot water. When the water purifier 1 is provided with the normal temperature water outlet pipeline 30 and the fifth electromagnetic valve 31, the fifth electromagnetic valve 31 needs to be started when detecting that the user takes the normal temperature pure water.

In step S703, when it is not detected that the user has taken water for more than a first preset time period, the water pump and the third electromagnetic valve are turned on, and the water pump and the third electromagnetic valve are turned off after the water in the pure water tank is drained.

Here, the first preset time period may be one day or three days, etc., when the user does not take water for more than one day or three days, the pure water in the pure water tank may be stored for one day or three days, and the quality of the pure water in the pure water tank may be deteriorated due to an excessively long storage time, at this time, the water discharge mode may be entered, and the water suction pump and the third electromagnetic valve may be turned on to discharge the pure water in the pure water tank 13 from the wastewater outlet of the reverse osmosis filter element 12 to the wastewater connection port 21. After the water in the pure water tank 13 is drained, the water draining mode can be exited, and the water pump and the third electromagnetic valve are closed. The water discharge mode can be controlled by the time length of entering the water discharge mode, for example, the water discharge mode is exited when the time length of entering the water discharge mode exceeds a preset time length, the preset time length is related to the size of the pure water tank, and the water in the pure water tank can be completely discharged within the preset time length; the water discharge mode may be controlled to exit by detecting the water level 0 in the pure water tank.

Here, when the waste water solenoid valve 28 is provided in the waste water pipe 16 of the water purifier 1, the waste water solenoid valve 28 needs to be opened when the water purifier enters the water discharge mode. In addition, when the water purifier enters the water drainage mode, the water purifier is forbidden to enter the water taking mode and the water making mode.

In step S704, when the water preparation mode is not entered after a second preset time period, the water pump and the third electromagnetic valve are turned on, the water pump and the third electromagnetic valve are turned off after the water pump and the third electromagnetic valve are turned on, and the water pump and the third electromagnetic valve are turned off.

Here, the second preset time period may be about half an hour, when the user does not produce water for about more than the second preset time period, raw water particles in front of the RO membrane of the reverse osmosis filter element 12 may permeate to the pure water end through the RO membrane, at this time, the reverse flow mode may be entered, the water pump 18 and the third electromagnetic valve are opened for a third preset time period, the water pump 18 may pump a part of pure water in the pure water tank 13 to flow to the water inlet of the reverse osmosis filter element 12 through the third electromagnetic valve 25, so as to replace the raw water in front of the RO membrane of the reverse osmosis filter element 12, and the raw water is discharged from the wastewater outlet of the reverse osmosis filter element 12 under the hydraulic pressure of the water pump 18, and then is discharged from the wastewater purifier interface 21. The third preset time period may be a short time period of about 1 minute, as long as the raw water before the RO membrane of the reverse osmosis filter element 12 is replaced by the extracted part of the pure water.

And under the condition that the second electromagnetic valve or the booster pump is arranged between a backflow water port and the water inlet of the reverse osmosis filter element, the second electromagnetic valve or the booster pump needs to be opened when the water enters a drainage mode and a backflow mode. Here, since the position of the backflow water port is different, the devices to be activated are different when entering the drainage mode or the backflow mode, and if the backflow water port is located between the booster pump 23 and the water inlet of the reverse osmosis filter element 12 as shown in fig. 1, only the suction pump 18 and the third solenoid valve 25 need to be activated when entering the drainage mode or the backflow mode. If the second electromagnetic valve 22 and the booster pump 23 are located between the return water port and the water inlet of the reverse osmosis filter element 12 as shown in fig. 2, the water pump 18, the third electromagnetic valve 25, the second electromagnetic valve 22 and the booster pump 23 need to be started when entering the drainage mode or the return mode, so that the returned pure water can reach the water inlet of the reverse osmosis filter element 12 to complete replacement or drainage; if the booster pump 23 is located between the water return port and the water inlet of the reverse osmosis filter element 12, the water pump 18, the third electromagnetic valve 25 and the booster pump 23 need to be started when entering the drainage mode or the backflow mode, so that the backflow pure water can reach the water inlet of the reverse osmosis filter element 12, and then the replacement or the drainage is completed.

Here, when the waste water solenoid valve 28 is provided in the waste water line 16 of the water purifier 1, the waste water solenoid valve 28 needs to be opened when the water purifier enters the return mode. In addition, when the water purifier enters the backflow mode, the water purifier is prohibited from entering the water taking mode and the water making mode.

The following are embodiments of the disclosed apparatus that may be used to perform embodiments of the disclosed methods.

Fig. 8 is a block diagram illustrating a control apparatus of a water purifier, which may be implemented as a part or all of an electronic device by software, hardware, or a combination of both, according to an exemplary embodiment. As shown in fig. 8, the control device of the water purifier includes:

the first control module 801 is used for entering a water making mode when the pure water amount in the pure water tank is smaller than a first pure water amount, and opening the first electromagnetic valve, the booster pump and the second electromagnetic valve; when the pure water amount in the pure water tank is higher than a second pure water amount, the pure water tank exits the water making mode, and the first electromagnetic valve, the booster pump and the second electromagnetic valve are closed;

the second control module 802 is configured to enter a water taking mode when it is detected that a user takes water, and open the water pump and the fourth electromagnetic valve;

the third control module 803 is configured to enter a drainage mode when water intake by a user is not detected for more than a preset time period, open the water pump and the third electromagnetic valve until water in the pure water tank is drained, exit the drainage mode, and close the water pump and the third electromagnetic valve;

and the fourth control module 704 is used for entering a backflow mode when the second preset time length is exceeded and the excessive water making mode is not entered, opening the water suction pump and the third electromagnetic valve, exiting the backflow mode after the third preset time length is opened, and closing the water suction pump and the third electromagnetic valve.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure should be limited only by the attached claims.

Claims

1. A water purifier, characterized by comprising: the device comprises a front filter element, a reverse osmosis filter element and a pure water tank; the water purifier further includes:

2. The water purifier of claim 1, further comprising a controller connected to the booster pump, the suction pump, the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve, wherein:

the controller is used for controlling the electromagnetic valves to enter a normally closed state, and opening the first electromagnetic valve, the second electromagnetic valve and the booster pump when entering a water making mode; when the water taking mode is started, the fourth electromagnetic valve and the water suction pump are opened; when the reverse osmosis water purifier enters a backflow mode and a drainage mode, the third electromagnetic valve and the water suction pump are opened, and when the second electromagnetic valve or the booster pump is arranged between the backflow water port and the water inlet of the reverse osmosis filter element, the second electromagnetic valve or the booster pump is opened.

3. The water purifier according to claim 2, wherein a water level detector is provided in the pure water tank;

4. The water purifier according to claim 1, further comprising:

5. The water purifier according to claim 1, further comprising:

6. The water purifier according to claim 1, further comprising: a post-positioned filter element;

7. The water purifier of claim 6, wherein two or three of the pre-filter element, the reverse osmosis filter element and the post-filter element are integrated into one composite filter element.

8. The water purifier according to claim 4, further comprising: a normal temperature water outlet pipeline;

9. The water purifier according to claim 8, wherein a fifth electromagnetic valve is arranged on the normal temperature water outlet pipeline.