CN107986354B

CN107986354B - Water purifier

Info

Publication number: CN107986354B
Application number: CN201711473174.XA
Authority: CN
Inventors: 刘建军; 何中义; 徐长军; 谭天生
Original assignee: Anhui Viano Water Purification Technology Co ltd; Qingdao Haier Strauss Water Equipment Co Ltd
Current assignee: Anhui Viano Water Purification Technology Co ltd; Qingdao Haier Strauss Water Equipment Co Ltd
Priority date: 2017-12-29
Filing date: 2017-12-29
Publication date: 2024-01-09
Anticipated expiration: 2037-12-29
Also published as: CN107986354A

Abstract

The invention provides a water purifier, wherein a filter element fixing structure is used for fixing a filter element in a primary filtering mechanism on a waterway plate; the intelligent control system comprises: the raw water TDS value detection mechanism 2a detects the actual TDS value of raw water, and the controller controls the discharge amount of the concentrated water according to the actual TDS value; the water leakage detector is used for detecting water leakage information in the water purifier, and the controller controls the booster pump, the water inlet valve and the water suction pump to stop working; the emptying mechanism sends an emptying instruction to the controller; the controller controls the booster pump and the water inlet valve to stop working, and simultaneously controls the water suction pump to start working; the pressure release mechanism sends a pressure release instruction to the controller, and the controller controls the booster pump and the water inlet valve to stop working and simultaneously controls the concentrated water discharge mechanism to start working until water in the filter element is emptied; the water shortage stopping protection mechanism sends a water shortage instruction to the controller, and the controller controls the booster pump and the water inlet valve to stop working. Through intelligent control system, realize the one-key evacuation of water purifier, pressure release, uninterrupted water supply, intelligent water conservation's purpose.

Description

Water purifier

Technical Field

The invention relates to the technical field of water treatment, in particular to a water purifier.

Background

The water purifier has small structure and high water treating capacity, and is one common household water apparatus.

It is known that a filter element, typically a three-stage filter element, is fixed inside the water purifier. The filter element is in a high-pressure state for a long time under the working pressure of raw water or a pump. If the filter element is not firmly fixed, the filter element is likely to jump under high pressure, and even the filter element is changed, the filter element can jump out to hurt people.

When the filter element is installed, the male connector and the female connector are required to be in butt joint. Because the internal structure of the water purifier is compact, the operation space is limited, when the male connector and the female connector are connected, the male connector and the female connector can be successfully connected through continuous adjustment, so that the time and the labor are consumed, and the male connector and the female connector are easily damaged due to forced connection.

With the development of society and the progress of science and technology, people have higher and higher requirements on life quality, especially because of serious pollution, the quality of domestic water is reduced, and water purifiers are driven into thousands of households today.

In the water purifier in the prior art, raw water is filtered, and filtered concentrated water directly enters a sewer pipeline. Then, the prior art water purifier does not have a defect of adjusting the discharge amount of the concentrated water in real time with respect to the TDS value of different raw water.

In addition, the water purifier in the prior art directly supplies water to the faucet after pure water comes out, or stores the pure water into the water tank, and when the water purifier is used, pure water is discharged from the water tank. Because the water supply path is single, the pure water can not be used in time due to no water in the water tank.

In addition, the secondary water supply is likely to have a low water pressure especially in the peak period of summer water consumption, and at this time, the water purifier is not closed, so that the water purifier is damaged. The existing water purifier has no function of water shortage shutdown protection.

When the water purifier is not used for a long time and is used again, the residual water in the water tank does not meet the use requirement, and the water purifier needs to be emptied and reused. In the prior art, the water purifier shell is often required to be opened, and water in the water tank is emptied manually. The process is complicated and the intelligent degree is low.

The filter element in the prior art is often to be replaced by pressing, water spraying or the filter element jumping out hurts people often occurs, and if the filter element can be depressurized before being disassembled, a lot of troubles can be avoided.

Disclosure of Invention

The invention aims to solve the defect that a mounting structure for rapidly fixing a filter element of a water purifier in the prior art is not complete, and provides the water purifier for solving the problems.

In order to achieve the above object, the technical scheme of the present invention is as follows:

a water purifier comprises a water tank, a filter element fixing structure, a secondary filtering mechanism and an intelligent control system;

the filter element fixing structure is used for fixing the filter element in the secondary filtering mechanism on the waterway plate;

the intelligent control system comprises a controller, a raw water TDS value detection mechanism, a concentrated water discharge mechanism, a concentrated water circulation mechanism, a first pure water outlet mechanism, a second pure water outlet mechanism, a water shortage shutdown protection mechanism, a water leakage detector, an emptying mechanism, a pressure relief mechanism, a booster pump, a water pump and a water inlet valve;

the water suction pump is fixed on a water outlet pipeline of the water tank; the water inlet valve and the booster pump are sequentially fixed on a water inlet pipeline of the filtering mechanism according to the water flow direction;

raw water sequentially passes through the primary filtering mechanism, the secondary filtering mechanism, the first pure water outlet mechanism or the second pure water outlet mechanism through pipelines;

the concentrated water is discharged from the secondary filtering mechanism through a pipeline and then discharged through a concentrated water discharging mechanism or circulated to a pipeline confluence between a water inlet valve (102 a) and a booster pump (20 a) through a concentrated water circulating mechanism;

the raw water TDS value detection mechanism sends the detected raw water actual TDS value to the controller, and the controller judges and controls the discharge amount of the concentrated water passing through the concentrated water discharge mechanism according to the judging result;

the water leakage detector is used for detecting water leakage information in the water purifier and sending the water leakage information to the controller, and the controller controls the booster pump, the water inlet valve and the water pump to stop working according to the water leakage information;

the emptying mechanism sends an emptying instruction to the controller; the controller controls the booster pump and the water inlet valve to stop working, and simultaneously controls the water suction pump to start working until the water in the water tank is emptied;

the pressure release mechanism sends a pressure release instruction to the controller, and the controller controls the booster pump and the water inlet valve to stop working and simultaneously controls the concentrated water discharge mechanism to start working until water in the filter element is emptied;

the water shortage shutdown protection mechanism sends a water shortage instruction to the controller, and the controller controls the booster pump and the water inlet valve to stop working.

Preferably, the filter element fixing structure comprises a first positioning guide mechanism, a second positioning guide mechanism and a pressing mechanism;

the secondary filtering mechanism comprises a filter element; the bottom of the filter element is provided with a guide part matched with the first positioning guide mechanism; through the cooperation of the first positioning guide mechanism and the guide part, the positioning of the filter element in the circumferential direction is realized;

the second positioning guide mechanism is matched with the upper end of the filter element to realize the alignment action of the male and female connectors of the filter element;

the compressing mechanism fixes the filter elements inside the water purifier.

Preferably, the first positioning guide mechanism comprises a guide groove and a guide piece which are arranged on the bottom cover plate of the water purifier, and the guide piece is fixed in the guide groove; the shape of the guide groove is matched with the cross section shape of the bottom of the filter element; the guide part is a groove-shaped structure which is arranged at the bottom of the filter element and is matched with the guide piece; the filter element bottom is inserted into the guide groove, so that the horizontal position of the filter element is positioned, and the guide piece is matched with the guide part, so that the circumferential direction of the filter element is positioned.

Preferably, the second positioning and guiding mechanism comprises a clamping position which is horizontally arranged; after the upper end of the filter element is horizontally pushed into the clamping position from outside to inside, the butt joint of the male connector and the female connector of the filter element can be realized.

Preferably, the clamping position is fixed on a front plate of a waterway plate of the water purifier; the clamping position comprises a left clamping key and a right clamping key; the female connector is positioned in the middle of the left clamping key and the right clamping key; in the process that the upper end of the filter element is pushed into the space between the left clamping key and the right clamping key, the fixation of the filter element and the butt joint action of the female connector and the male connector on the filter element are completed.

Preferably, the opposite sides of the left clamping key and the right clamping key are sequentially provided with a guide section and a clamping end from outside to inside; when the filter element is pushed into the inner side of the clamping position, the filter element is led into the clamping section through the guide sections at the left side and the right side and then is clamped.

Preferably, the pressing mechanism comprises a pressing rod and a buckle; the water purifier is characterized in that one end of the pressure lever and the buckle are rotationally fixed on the front plate of the waterway plate of the water purifier, and the other end of the pressure lever is matched with the buckle to realize that the pressure lever spans across the plurality of filter elements and compresses the plurality of filter elements in the clamping position.

Preferably, the raw water TDS value detection mechanism includes a first TDS sensor and a temperature sensor; raw water sequentially passes through a first TDS sensor and a temperature sensor; the first TDS sensor and the temperature sensor are respectively used for detecting the TDS value and the temperature of raw water, obtaining the actual TDS value through temperature compensation calculation, and sending the actual TDS value to the controller; the controller determines the concentrate discharge amount based on the actual TDS value.

Preferably, the concentrated water discharging mechanism comprises a discharging pipeline and a concentrated water discharging valve fixed on the discharging pipeline; the concentrated water circulating mechanism circulates the concentrated water to the upstream of the booster pump, and an outlet of the discharge pipeline leads to a concentrated water discharge point; and the controller controls the opening and closing interval time of the concentrated water discharge valve according to the actual TDS value.

Preferably, the concentrated water circulating mechanism comprises a circulating pipeline and a check valve fixed on the circulating pipeline; the inlet of the circulating pipeline is connected with the concentrated water outlet of the secondary filtering mechanism, and the outlet of the circulating pipeline is converged to the inlet end of the secondary filtering mechanism.

Preferably, the first pure water outlet mechanism comprises a first check valve and a water level detector; the first check valve is fixed on a water inlet pipeline of the water tank, and the water suction pump is fixed on a water outlet pipeline between the water tank and the intelligent faucet; the water level detector is fixed in the water tank and used for detecting water level information in the water tank; when the intelligent faucet is opened, the controller sends a water outlet signal, after the controller receives the signal, the current water level of the water tank is obtained through the water level detector, if the water level is higher than a set value, the controller controls the water suction pump to operate, water is supplied to the intelligent faucet, and otherwise, the controller controls the water suction pump to stop operating.

Preferably, the second pure water outlet mechanism comprises a pure water pipe and a second check valve fixed on the pure water pipe; a third check valve is also fixed on the pipeline between the water pump and the intelligent water tap; the inlet of the pure water pipe is connected with the pure water outlet of the secondary filtering mechanism, and the outlet of the pure water pipe is converged to a pipeline between the third check valve and the intelligent faucet; the pressure of the second check valve is smaller than that of the first check valve and smaller than the water delivery pressure of the water pump.

Preferably, the water shortage shutdown protection mechanism comprises a water pressure detector; the water pressure detector is fixed on an upstream pipeline of the booster pump and is used for detecting the water pressure of raw water inflow and sending the water pressure to the controller, and the controller controls the opening and closing of the booster pump and the water inflow valve according to judgment of the current water pressure.

Preferably, the water leakage detector is fixed on the bottom cover plate.

Preferably, the emptying mechanism comprises an emptying instruction input end and a liquid level detector arranged in the water tank; the user sends an emptying instruction to the controller through the emptying instruction input end, and the controller controls the booster pump and the water inlet valve to stop working after receiving the emptying instruction and simultaneously controls the water pump to start working; when the liquid level detector detects that the current liquid level reaches the emptying set value, emptying information is sent to the controller, and the controller controls the water pump to stop working.

Preferably, the pressure relief mechanism comprises a pressure relief instruction input end; the user sends a pressure relief instruction to the controller through the pressure relief instruction input end, and the controller controls the booster pump and the water inlet valve to stop working according to the pressure relief instruction and controls the concentrated water discharge mechanism to start working; when the water pressure detector detects that the water pressure in the pipeline reaches a set value and sends the pressure information to the controller, the controller controls the concentrated water discharge mechanism to stop working.

Compared with the prior art, the invention has the following beneficial effects:

according to the invention, the filter element is rapidly positioned horizontally and circumferentially through the first positioning guide mechanism, the male connector and the female connector are rapidly abutted through the second positioning guide mechanism, and the plurality of filter elements are rapidly fixed through the pressing mechanism.

The first positioning guide mechanism is used for realizing the positioning of the horizontal position of the filter element through the guide groove, and realizing the positioning of the circumferential position of the filter element through the matching of the guide piece and the groove-shaped guide part at the bottom of the filter element, so that the positioning process is quick and simple.

The second positioning guide mechanism realizes quick butt joint of the male connector and the female connector through clamping, and the left-right swing adjustment position is not needed when the upper ends of the filter elements are in butt joint. And the filter element is convenient to enter from the large opening through the guide keys at the inner sides of the left and right clamping keys, and finally is clamped and fixed by the guide keys.

The pressing mechanism is matched with the buckling handle through the rotating pressing rod, so that one pressing rod is pressed and fixed on a plurality of filter cores simultaneously, the fixation is fast and convenient, and the pressing rod is pressed and opened fast through the snap fit structure of the buckling handle and one end of the pressing rod.

The invention makes the water supply of the water purifier more intelligent through the automatic control system, and realizes the purposes of saving water, protecting equipment and supplying water uninterruptedly.

According to the original TDS value, the discharge amount of the concentrated water is controlled, so that the aim of saving is fulfilled, and the device has a real-time adjusting function;

the aim of uninterrupted water supply is fulfilled by the pressure difference between the first pure water outlet mechanism and the second pure water outlet mechanism;

the water shortage protection function of the whole machine is realized through detecting the water pressure.

The water making device receives the water signal of the raw water and can start the water making program; the water pressure is lower than the set value, the controller receives the raw water shortage signal, stops water production, and controls the booster pump and the water inlet concentrated water discharge valve to be not operated.

Through the pressure release mechanism, the pressure release can be realized when the filter core needs to be replaced, so that the accident of hurting people caused by pressure when the filter core is removed is avoided.

The cleaning work of the whole pipeline and the water tank of the water purifier can be realized through the emptying mechanism.

Drawings

FIG. 1 is a schematic diagram of the overall explosive structure of the present invention;

FIG. 2 is a schematic view of the water tank and the housing of the present invention;

FIG. 3 is a schematic view of the cartridge and housing of the present invention in a disassembled configuration;

FIG. 4 is a schematic view of the bottom view of the cartridge of the present invention;

FIG. 5 is a schematic diagram of a control system according to the present invention;

fig. 6 is a block diagram of a control system of the present invention.

Detailed Description

For a further understanding and appreciation of the structural features and advantages achieved by the present invention, the following description is provided in connection with the accompanying drawings, which are presently preferred embodiments and are incorporated in the accompanying drawings, in which:

example 1

As shown in fig. 1, 2, 3 and 4, the water purifier comprises a middle frame 1, a bottom cover plate 2, a top cover plate 2b, a waterway plate front plate 3, a waterway plate rear plate 8, a right cover plate 5b, a left cover plate 5c, a front cover plate 9, a rear cover plate and a primary filtering mechanism 1a. The right cover plate 5b, the left cover plate 5c, the front cover plate 9 and the rear cover plate are respectively clamped on the front, the back, the left and the right of the middle frame 1 to form a body of the water purifier. The water tank is located on the left side of the middle frame 1, the waterway plate formed by the waterway plate front plate 3 and the waterway plate rear plate 8 and the primary filtering mechanism 1a are located on the right side of the middle frame 1, and the intelligent control system is located on the right side of the middle frame 1 and is also integrated on the right side of the middle frame 1. The bottom cover plate 2 is fixed at the bottom of the middle frame 1. The front cover 9 is provided with a control panel 91. The filtering device in the water purifier provided in the present embodiment includes a primary filtering mechanism 1a, a secondary filtering mechanism 30a, and a tertiary filtering mechanism 3a, i.e., 3 filter elements.

The filter element fixing structure comprises a first positioning guide mechanism 5, a second positioning guide mechanism 6 and a pressing mechanism 7.

The bottom of the filter element is provided with a guide part 41 matched with the first positioning guide mechanism 5; the first positioning guide mechanism 5 cooperates with the guide portion 41 to realize positioning of the filter element in the circumferential direction. The first positioning guide mechanism 5 includes a guide groove 51 formed in the bottom of the middle frame 1, and a guide piece 52 formed on the bottom cover plate 2. The guide groove 51 is a through hole with a shape matched with the cross section shape of the bottom of the filter element, the bottom cover plate 2 is fixed on the outer side of the bottom of the middle frame 1, and the guide piece 52 extends out of the guide groove 51. The guide 52 is generally crescent shaped. The guide part 41 is a groove-shaped structure which is arranged at the bottom of the filter element and is matched with the guide piece 52; the filter element bottom is inserted into the guide groove 51 to realize the positioning of the horizontal position of the filter element, and the guide piece 52 is matched with the guide part 41 to realize the positioning of the circumferential direction of the filter element.

The second positioning and guiding mechanism 6 comprises a clamping position which is horizontally arranged; the clamping position is fixed on the waterway plate front plate 3 of the water purifier; the clamping positions comprise a left clamping key 61 and a right clamping key 62; the female connector 42 is located at the middle position of the left and right click keys 61 and 62; in the process that the upper end of the filter element is pushed into the space between the left clamping key 61 and the right clamping key 62, the fixation of the filter element and the butt joint action of the male connector and the female connector 42 on the filter element are completed.

The opposite sides of the left clamping key 61 and the right clamping key 62 are sequentially provided with a guide section and a clamping end from outside to inside; when the filter element is pushed into the inner side of the clamping position, the filter element is led into the clamping section through the guide sections at the left side and the right side and then is clamped.

The pressing mechanism 7 comprises a pressing rod 71 and a buckle 72; one end of the pressure lever 71 and the buckle 72 are both rotationally fixed on the waterway plate front plate 3 of the water purifier, and the pressure lever 71 spans a plurality of filter elements and compresses the filter elements through the cooperation of the other end of the pressure lever 71 and the buckle 72. The knob 72 has a ring structure, the free end of the pressure bar 71 is limited in the ring by rotating the knob 72, and the pressure bar 71 and the knob 72 are tightly fixed by the rebound of the pressure bar 71 due to the certain elasticity of the pressure bar 71.

One side of the compression bar 71 facing the filter element is provided with a clamping groove matched with a plurality of filter elements; one for each cartridge 711. The silica gel gasket 712 is fixed in the clamping groove 711, so that the maximum contact area between the compression bar and the circumference of the filter element is realized, the fixation is firmer, and the gasket can protect the filter flask from being crushed. The shape of the clamping groove 711 is generally adapted to the outer circumference of the filter element, so as to increase the contact area between the compression bar 71 and the outer surface of the filter element, and when the filter element is pressed and has a jumping tendency, the clamping groove 711 can limit the filter element in the left-right direction.

Example 2

As shown in fig. 5 and 6, the present embodiment also provides a water purifier with an intelligent control system based on the water purifier of embodiment 1.

The intelligent control system comprises a controller, a primary filtering mechanism 1a, a raw water TDS value detection mechanism 2a, a secondary filtering mechanism 30a, a pure water TDS detector 4a, a concentrated water discharge mechanism, a concentrated water circulation mechanism, a first pure water outlet mechanism, a second pure water outlet mechanism, a water shortage shutdown protection mechanism, a water leakage detector, an emptying mechanism, a pressure relief mechanism, a booster pump, a water pump and a water inlet valve. The water suction pump is fixed on a water outlet pipeline of the water tank; the booster pump and the water inlet valve are sequentially fixed on a water inlet pipeline of the filtering mechanism according to the water flow direction.

Tap water sequentially passes through the primary filtering mechanism 1a, the raw water TDS value detecting mechanism 2a, the secondary filtering mechanism 30a, the tertiary filtering mechanism 3a, the pure water TDS detector 4a, the first pure water outlet mechanism 5a or the second pure water outlet mechanism 6a and the intelligent faucet 9a through pipelines;

the concentrated water is discharged from the secondary filter mechanism 30a through a pipeline and then discharged through the concentrated water discharge mechanism 7a or circulated to the water inlet of the secondary filter mechanism 2a through the concentrated water circulation mechanism 8 a.

The method comprises the following steps:

the raw water TDS value detection means 2a includes a first TDS sensor 21a, a temperature sensor 22a; raw water sequentially passes through the first TDS sensor 21a and the temperature sensor 22a; the first TDS sensor 21a and the temperature sensor 22a are respectively used for detecting the TDS value and the temperature of tap water, obtaining an actual TDS value through temperature compensation calculation, and sending the actual TDS value to the controller; the controller determines the concentrate discharge amount based on the actual TDS value.

The concentrate discharge mechanism 7a includes a discharge pipe 71a and a concentrate discharge valve 72a fixed to the discharge pipe 71a, the concentrate discharge valve 72a being a normally closed solenoid valve; the inlet of the discharge pipe 71a is connected with the concentrated water outlet of the secondary filtering mechanism 30a, and the outlet of the discharge pipe 71a leads to a concentrated water discharge point; the controller controls the on-off interval time of the rich drain valve 72a according to the actual TDS value. The concentrate discharge valve 72a has a specific wastewater ratio function.

A booster pump 20a is fixed on a pipeline between the water inlet valve 102a and the inlet of the secondary filtering mechanism 2a; the rich water circulation mechanism 8a circulates the rich water upstream of the booster pump 20a and downstream of the water intake valve 102.

The concentrate circulation mechanism 8a includes a circulation pipe 81a and a check valve 82a fixed to the circulation pipe 81 a; the inlet of the circulation pipe 81a is connected to the concentrated water outlet of the secondary filtration mechanism 1a, and the outlet of the circulation pipe 81a merges upstream of the booster pump 20a and downstream of the water intake valve 102. The check valve 82a has a waste water ratio function.

The first pure water outlet mechanism 5a includes a first check valve 51a, a water tank 52a, a water level detector 53a, and a water pump 54a; the first check valve 51a is fixed on the water inlet pipeline of the water tank 52a, and the water suction pump 54a is fixed on the water outlet pipeline between the water tank 52a and the intelligent faucet 9a; a water level detector 53a is fixed in the water tank 52a for detecting water level information in the water tank 52 a.

The second pure water outlet mechanism 6a includes a pure water pipe 61a and a second check valve 62a fixed to the pure water pipe 61 a; a third check valve 55a is also fixed on the pipeline between the water pump 54a and the intelligent water tap 9a; the inlet of the pure water pipe 61a is connected with the pure water outlet of the three-stage filtering mechanism 3a, and the outlet of the pure water pipe 61a is converged to a pipeline between the third check valve 55a and the intelligent faucet 9a; the pressure of the second check valve 62a is smaller than the pressure of the first check valve 51a and smaller than the water supply pressure of the water pump 54 a. The pure water TDS detector 4a is fixed between the water outlet of the three-stage filtering mechanism 3a and the connection point of the pure water pipe 61 a.

When the intelligent water tap 9a is opened, a water outlet signal is sent to the controller, after the controller receives the signal, the current water level of the water tank 52a is obtained through the water level detector 53a, if the water level is higher than a set value, the controller controls the water suction pump 54a to operate and supply water to the intelligent water tap 9a, otherwise, the controller controls the water suction pump 54a to stop operating, when the controller controls the water suction pump 54a to start operating, the water suction pump 54a sends high-pressure water to the downstream of the second check valve 62a, under the pressure of the high-pressure water, the second check valve 62a is closed, and pure water enters the water tank 52a through the first check valve 51 a; on the contrary, when the controller controls the water pump 54a to stop operating, pure water is sent from the three-stage filtering mechanism 3a to the intelligent faucet 9a via the second check valve 62a with smaller pressure.

The water shortage shutdown protection mechanism 10a includes a water pressure detector 101a; the water pressure detector 101a is fixed at the upstream of the secondary filter mechanism 2a, and the water inlet valve 102a is fixed between the water pressure detector 101a and the a booster pump 20a; the water pressure detector 101 is a low-pressure switch, the low-pressure switch is in a normally open state, when the water pressure is higher than a set value, the controller receives a water signal of raw water, and a water making program can be started; when the water pressure is lower than the set value, the controller receives the raw water shortage signal, stops water production, controls the booster pump 20a and the water inlet valve 102a to be not operated, and the water inlet valve 102a is a water inlet electromagnetic valve.

The water leakage detector is fixed on the bottom cover plate, and rainwater can conduct a circuit, namely a water leakage signal is sent to the controller.

The emptying mechanism comprises an emptying instruction input end and a liquid level detector arranged in the water tank; the user sends an emptying instruction to the controller through the emptying instruction input end, and the controller controls the booster pump and the water inlet valve to stop working after receiving the emptying instruction and simultaneously controls the water pump to start working; when the liquid level detector detects that the current liquid level reaches the emptying set value, emptying information is sent to the controller, and the controller controls the water pump to stop working.

The pressure relief mechanism comprises a pressure relief instruction input end; the user sends a pressure relief instruction to the controller through the pressure relief instruction input end, and the controller controls the booster pump and the water inlet valve to stop working according to the pressure relief instruction and controls the concentrated water discharge mechanism to start working; when the water pressure detector detects that the water pressure in the pipeline reaches a set value and sends the pressure information to the controller, the controller controls the concentrated water discharge mechanism to stop working.

The emptying instruction input end and the pressure relief instruction input end are keys arranged on the control panel.

The intelligent faucet in the two embodiments is an electronic faucet, which has a function of collecting a switching signal and sends the signal to the controller. The faucet with this function is available directly in the prior art and will not be described in detail here.

For Wi-Fi type water purifier, the pure water TDS detector 4a is used for collecting the DTS value of pure water and sending the value to the controller, and reminding the user of the current pure water quality condition through the mobile phone APP client.

The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A water purifier, characterized in that: comprises a water tank (52 a), a secondary filtering mechanism (30 a) and an intelligent control system;

the intelligent control system comprises a controller, a raw water TDS value detection mechanism (2 a), a concentrated water discharge mechanism (7 a), a concentrated water circulation mechanism (8 a), a first pure water outlet mechanism (5 a), a second pure water outlet mechanism (6 a), a water shortage shutdown protection mechanism (10 a), a water leakage detector, an emptying mechanism, a pressure relief mechanism, a booster pump (20 a), a water suction pump (54 a) and a water inlet valve (102 a);

the water suction pump (54 a) is fixed on a water outlet pipeline of the water tank (52 a); the water inlet valve (102 a) and the booster pump (20 a) are sequentially fixed on a water inlet pipeline of the secondary filtering mechanism (30 a) according to the water flow direction;

raw water sequentially passes through a primary filtering mechanism (1 a), a secondary filtering mechanism (30 a), a first pure water outlet mechanism (5 a) or a second pure water outlet mechanism (6 a) through pipelines;

the concentrated water is discharged from the secondary filtering mechanism (30 a) through a pipeline and then discharged through the concentrated water discharging mechanism (7 a) or circulated to a pipeline between the water inlet valve (102 a) and the booster pump (20 a) through the concentrated water circulating mechanism (8 a) for converging;

the raw water TDS value detection mechanism (2 a) sends the detected raw water actual TDS value to a controller, and the controller judges and controls the discharge amount of the concentrated water passing through the concentrated water discharge mechanism (7 a) according to the judging result;

the water leakage detector is used for detecting water leakage information in the water purifier and sending the water leakage information to the controller, and the controller controls the booster pump (20 a), the water inlet valve (102 a) and the water pump (54 a) to stop working according to the water leakage information;

the emptying mechanism sends an emptying instruction to the controller; the controller controls the booster pump (20 a) and the water inlet valve (102 a) to stop working, and simultaneously controls the water suction pump (54 a) to start working until the water in the water tank (52 a) is emptied;

the pressure release mechanism sends a pressure release instruction to the controller, and the controller controls the booster pump (20 a) and the water inlet valve (102 a) to stop working and simultaneously controls the concentrated water discharge mechanism (7 a) to start working until water in the filter element is emptied;

the water shortage shutdown protection mechanism (10 a) sends a water shortage instruction to the controller, and the controller controls the booster pump (20 a) and the water inlet valve (102 a) to stop working;

the first pure water outlet mechanism (5 a) comprises a first check valve (51) and a water level detector (53 a); the first check valve (51) is fixed on a water inlet pipeline of the water tank (52 a), and the water suction pump (54 a) is fixed on a water outlet pipeline between the water tank (52 a) and the intelligent faucet (9 a); the water level detector (53 a) is fixed in the water tank (52 a) and is used for detecting water level information in the water tank (52 a); when the intelligent water tap (9 a) is opened and then a water outlet signal is sent to the controller, after the controller receives the signal, the current water level of the water tank (52 a) is obtained through the water level detector (53 a), if the water level is higher than a set value, the controller controls the water suction pump (54 a) to operate, water is supplied to the intelligent water tap (9 a), otherwise, the controller controls the water suction pump (54 a) to stop operating;

the second pure water outlet mechanism (6 a) comprises a pure water pipe (61 a) and a second check valve (62 a) fixed on the pure water pipe (61 a); a third check valve (55 a) is also fixed on the pipeline between the water pump (54 a) and the intelligent water tap (9 a); the inlet of the pure water pipe (61 a) is connected with the pure water outlet of the secondary filtering mechanism (30 a), and the outlet of the pure water pipe (61 a) is converged to a pipeline between the third check valve (55 a) and the intelligent faucet (9 a); the pressure of the second check valve (62 a) is smaller than the pressure of the first check valve (51) and smaller than the water delivery pressure of the water suction pump (54 a);

the raw water TDS value detection mechanism (2 a) comprises a first TDS sensor (21 a) and a temperature sensor (22 a); raw water sequentially passes through a first TDS sensor (21 a) and a temperature sensor (22 a); the first TDS sensor (21 a) and the temperature sensor (22 a) are respectively used for detecting the TDS value and the temperature of raw water, obtaining the actual TDS value through temperature compensation calculation, and sending the actual TDS value to the controller; the controller determines the concentrate discharge amount based on the actual TDS value.

2. A water purifier as defined in claim 1, wherein: the concentrated water discharge mechanism (7 a) comprises a discharge pipeline (71 a) and a concentrated water discharge valve (72 a) fixed on the discharge pipeline (71 a); the concentrated water circulating mechanism (8 a) circulates the concentrated water to the upstream of the booster pump (20 a), and the outlet of the discharge pipeline (71 a) leads to a concentrated water discharge point; the controller controls the opening and closing interval time of the concentrated water discharge valve (72 a) according to the actual TDS value.

3. A water purifier as defined in claim 1, wherein: the concentrated water circulating mechanism (8 a) comprises a circulating pipeline (81 a) and a check valve (82 a) fixed on the circulating pipeline (81 a); the inlet of the circulating pipeline (81 a) is connected with the concentrated water outlet of the secondary filtering mechanism (30 a), and the outlet of the circulating pipeline (81 a) is converged to the inlet end of the secondary filtering mechanism (30 a).

4. A water purifier as defined in claim 1, wherein: the water shortage shutdown protection mechanism (10 a) comprises a water pressure detector (101 a); the water pressure detector (101 a) is fixed on an upstream pipeline of the booster pump (20 a) and is used for detecting the water pressure of raw water inflow and sending the water pressure to the controller, and the controller controls the opening and closing of the booster pump (20 a) and the water inflow valve (102 a) according to judgment of the current water pressure.

5. A water purifier as defined in claim 1, wherein: the emptying mechanism comprises an emptying instruction input end and a liquid level detector arranged in the water tank (52 a); the user sends an emptying instruction to the controller through the emptying instruction input end, and the controller controls the booster pump (20 a) and the water inlet valve (102 a) to stop working after receiving the emptying instruction and controls the water suction pump (54 a) to start working at the same time; when the liquid level detector detects that the current liquid level reaches the emptying set value, emptying information is sent to the controller, and the controller controls the water suction pump (54 a) to stop working.

6. A water purifier as recited in claim 4, wherein: the pressure relief mechanism comprises a pressure relief instruction input end; the user sends a pressure relief instruction to the controller through a pressure relief instruction input end, and the controller controls the booster pump (20 a) and the water inlet valve (102 a) to stop working according to the pressure relief instruction and controls the concentrated water discharging mechanism (7 a) to start working; when the water pressure detector (101 a) detects that the water pressure in the pipeline reaches a set value and sends the pressure information to the controller, the controller controls the concentrated water discharge mechanism (7 a) to stop working.