CN106277211A - A kind of water purifier and control method thereof - Google Patents
A kind of water purifier and control method thereof Download PDFInfo
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- CN106277211A CN106277211A CN201610901687.5A CN201610901687A CN106277211A CN 106277211 A CN106277211 A CN 106277211A CN 201610901687 A CN201610901687 A CN 201610901687A CN 106277211 A CN106277211 A CN 106277211A
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- water
- reverse osmosis
- filter element
- valve system
- osmosis filter
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/12—Use of permeate
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a kind of water purifier and control method thereof, water purifier includes reverse osmosis filter element, also includes: first rinses stream, and one end connects with the dense water out of reverse osmosis filter element, the other end connects with the water inlet of reverse osmosis filter element；Second rinses stream, and one end connects with the dense water out of reverse osmosis filter element, the other end connects with the water inlet of reverse osmosis filter element；Concentrated water discharge stream, one end connects with the dense water out of reverse osmosis filter element, and the other end is for going out concentrated water drainage to the external world, and concentrated water discharge stream is provided with the 3rd valve system controlling its break-make；Reflow line, one end connects with the dense water out of reverse osmosis filter element, and the other end connects with the water inlet of reverse osmosis filter element, and reflow line is provided with the 4th valve system controlling its break-make.Being arranged such, the water purifier that the present invention provides, it can improve on the basis of dense Water Sproading rate, solves reverse osmosis membrane performance and decays problem faster.
Description
Technical field
The present invention relates to purifier technical field, more particularly, it relates to a kind of water purifier and control method thereof.
Background technology
Existing water purifier exists that dense Water Sproading rate is low, the shortcoming that concentrated water discharge is many, in order to realize water purifier water-saving result, and one
As high-recovery water purifier use reduce concentrated water discharge or by dense water section refluxing portion discharge.
But, although both water treatment technologies improve the response rate to a certain extent, reach the purpose of water saving, but
It is that the concentration polarization on reverse osmosis membrane surface is serious, and reverse osmosis membrane can form CaCO3Small crystal nucleus, if CaCO can not be upset timely3
The formation of small crystal nucleus, will be easy to fouling on reverse osmosis membrane surface, and reverse osmosis membrane performance decay is accelerated, the life-span of reverse osmosis membrane
Will be greatly affected.
Therefore, how on the basis of improving dense Water Sproading rate, solve reverse osmosis membrane performance and decay problem faster, become
Those skilled in the art's important technological problems to be solved.
Summary of the invention
In view of this, it is an object of the invention to provide a kind of water purifier, it can be on the basis improving dense Water Sproading rate
On, solve reverse osmosis membrane performance and decay problem faster.It is an object of the invention to provide the controlling party of a kind of above-mentioned water purifier
Method, can be solved reverse osmosis membrane performance and decays faster equally by this control method on the basis of improving dense Water Sproading rate
Problem.
A kind of water purifier that the present invention provides, including reverse osmosis filter element, also includes:
First rinses stream, and one end connects with the dense water out of described reverse osmosis filter element, the other end is filtered with described reverse osmosis
The water inlet of core connects, and described first flushing stream is provided with the first valve system for controlling its break-make；
Second rinses stream, and one end connects with the dense water out of described reverse osmosis filter element, the other end is filtered with described reverse osmosis
The water inlet connection of core, described second rinses stream is provided with for controlling its break-make and can carry out the second valve of pulse-type drainage
Door system；
Concentrated water discharge stream, one end connects with the dense water out of described reverse osmosis filter element, and the other end is for going out concentrated water drainage
To extraneous, described concentrated water discharge stream is provided with the 3rd valve system controlling its break-make；
Reflow line, one end connects with the dense water out of described reverse osmosis filter element, the other end and described reverse osmosis filter element
Water inlet connects, and described reflow line is provided with the 4th valve system controlling its break-make.
Preferably, the dense water out of described reverse osmosis filter element connects has concentrated water drainage to go out main line, the entering of described reverse osmosis filter element
The mouth of a river is provided with into water main line, and described concentrated water drainage goes out main line and described enters to connect between water main line and have:
First branch road, is provided with the first scouring electromagnetic valve, to form described first flushing stream；
Second branch road, is provided with the first normally opened dense water ratio, second normally opened dense water when the second scouring electromagnetic valve, described second normal
Open dense water to connect with described first normally opened dense water ratio than with after described second scouring electromagnetic valve parallel connection, described second normally opened dense water ratio
Outlet be connected with the external world, described first normally opened dense water than and described second scouring electromagnetic valve place stream form described the
Two rinse stream, and described first normally opened dense water ratio and described second normally opened dense water form described concentrated water drainage than place stream and releases
Road；
3rd branch road, is provided with the 3rd normally opened dense water ratio and return flow solenoid valve, to form described reflow line.
Preferably, the dense water out of described reverse osmosis filter element connects has concentrated water drainage to go out main line, the entering of described reverse osmosis filter element
The mouth of a river is provided with into water main line, and described concentrated water drainage goes out main line and described enters to connect between water main line and have:
First branch road, is provided with the first scouring electromagnetic valve, the second scouring electromagnetic valve, the first normally opened dense water ratio and second normally opened
Dense water ratio, described first scouring electromagnetic valve and described first normally opened dense water ratio are in parallel, described second scouring electromagnetic valve and described
Second normally opened dense water ratio is in parallel, and two parallel flow paths are in series, and described first scouring electromagnetic valve and described second rinses electricity
Magnet valve place stream forms described first and rinses stream, described first scouring electromagnetic valve and described second normally opened dense water ratio or institute
State the second scouring electromagnetic valve and described first normally opened dense water to form described second than place stream and rinse stream, described first normally opened
Dense water forms described concentrated water discharge stream than with described second normally opened dense water than place stream；
Described second branch road, is provided with the 3rd normally opened dense water ratio and return flow solenoid valve, to form described reflow line.
Preferably, enter water main line described in and be provided with booster pump.
Preferably, the preposition filter element of at least one-level entering upstream, water main line described in being arranged on also is included.
Preferably, the rearmounted filter element of at least one-level being arranged on the pure water outlet downstream of described reverse osmosis filter element is also included.
Present invention also offers the control method of a kind of water purifier, based on water purifier as above, on described water purifier
After electricity, including step:
S1, described first valve system controls described first and rinses stream conducting, is rinsed described reverse osmosis filter element；
S2, after described reverse osmosis filter element is rinsed a second, described first valve system, described second valve system close
Close, described 4th valve system is closed, and described 3rd valve system is opened, so that concentrated water drainage goes out the external world；
S3, after concentrated water drainage goes out the extraneous b second, described second valve system, the 4th valve system are opened, and the 3rd valve system closes
Close, so that a dense water part for the discharge of described reverse osmosis filter element rinses stream by described second, described reverse osmosis filter element is entered
Row rinses, another part is flow back in described reverse osmosis filter element by described reflow line；
S4, after described second valve system, the 4th valve system open the c second, described second valve system, the 4th valve system
System is closed, and described 3rd valve system is opened, and described concentrated water drainage goes out to the external world；
S5, during described water purification mechanism pure water, repeating said steps S2, S3 and S4；
Wherein, a ＞ 0, b ＞ 0, c ＞ 0.
Preferably, after the described water purification mechanism pure water time reaches d hour, described first valve system is opened, and described second
Valve system, the 3rd valve system and described 4th valve system are closed, and it is dense that the dense water out of described reverse osmosis filter element flows out
Water rinses stream by described first and is rinsed described reverse osmosis filter element, after washing time reaches the e second, and described first valve
System is closed, wherein, and d ＞ 0, e ＞ 0.
Preferably, when the pressure in the pressure pot of described water purifier is more than preset high-pressure value, described first valve system
Opening, described second valve system, the 3rd valve system and described 4th valve system are closed, the dense water of described reverse osmosis filter element
The dense water that outlet is flowed out rinses stream by described first and is rinsed described reverse osmosis filter element, after washing time reaches the f second,
Described first valve system is closed, wherein, and f ＞ 0.
Preferably, when the pressure in the pressure pot of described water purifier is less than pre-set low pressure value, described first valve system
Opening, described second valve system, the 3rd valve system and described 4th valve system are closed, the dense water of described reverse osmosis filter element
The dense water that outlet is flowed out rinses stream by described first and is rinsed described reverse osmosis filter element, after washing time reaches the g second,
Described first valve system is closed, wherein, and g >=0.
Preferably, in described step S3 and S4, when entering the former water TDS value of described reverse osmosis filter element less than predetermined low level,
The described b second is the b1 second, and the described c second is the c1 second；The former water TDS value entering described reverse osmosis filter element more than predetermined low level and is less than
When presetting high level, the described b second is the b2 second, and the described c second is the c2 second；Enter the former water TDS value of described reverse osmosis filter element more than presetting
During high level, the described b second is the b3 second, and the described c second is the c3 second；Wherein, 0 ＜ b1 ＜ b2 ＜ b3,0 ＜ c1 ＜ c2 ＜ c3.
In the technical scheme that the present invention provides, reverse osmosis filter element the dense water flowed out can enter different processing stage respectively
Enter the first flushing stream, the second flushing stream, concentrated water discharge stream and reflow line to process.Described in detail below: water purification
After machine powers on, carrying out step: S1, the first valve system controls the first flushing stream conducting, is rinsed reverse osmosis filter element；
S2, after reverse osmosis filter element is rinsed a second, the first valve system, the second valve system are closed, the 4th valve system is closed,
3rd valve system is opened, so that concentrated water drainage goes out the external world；S3, after concentrated water drainage goes out the extraneous b second, the second valve system, the 4th valve
System is opened, and the 3rd valve system is closed, so that a dense water part for the discharge of reverse osmosis filter element is by the second flushing stream pair
Reverse osmosis filter element is rinsed, another part is flow back in reverse osmosis filter element by reflow line；S4, the second valve system,
After four valve systems open the c second, the second valve system, the 4th valve system are closed, and the 3rd valve system opens, concentrated water drainage go out to
Extraneous；S5, during water purification mechanism pure water, repeats step S2, S3 and S4；Wherein, a ＞ 0, b ＞ 0, c ＞ 0.
It is arranged such, the water purifier that the present invention provides, uses pulsed to rinse reverse osmosis filter element and discontinuous backflow control
System, can reduce concentrated water discharge, improves the system response rate, can slow down the filter membrane surface concentration polarization of reverse osmosis filter element simultaneously, extends
Membrane life.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to
Other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of water purifier in the first embodiment of the present invention；
Fig. 2 is the schematic diagram of water purifier in the second embodiment of the present invention；
Fig. 3 is the schematic diagram of water purifier in the third embodiment of the present invention；
In Fig. 1-Fig. 3:
Reverse osmosis filter element 11, concentrated water drainage go out main line 12, enter water main line the 13, first branch road the 14, first flushing electricity
Magnet valve the 15, second branch road the 16, first normally opened dense water dense water more normally opened than 17, second is than the 18, second scouring electromagnetic valve
19, the 3rd branch road 20, the 3rd normally opened dense water than 21, return flow solenoid valve 22, booster pump 23, pressure pot 24.
Detailed description of the invention
The core of this detailed description of the invention is to provide a kind of water purifier, and it can be on the basis improving dense Water Sproading rate
On, solve reverse osmosis membrane performance and decay problem faster.Another core of this detailed description of the invention is to provide one above-mentioned only
The control method of water machine, can solve reverse osmosis membrane equally by this control method on the basis of improving dense Water Sproading rate
Can be decayed problem faster.
Hereinafter, referring to the drawings embodiment is illustrated.Additionally, embodiments illustrated below is not to described in claim
Summary of the invention play any restriction effect.It addition, the full content of the composition represented by example below is not limited to as right
Necessary to the solution of the invention described in requirement.
Refer to Fig. 1-Fig. 3, a kind of water purifier that the present embodiment provides, including reverse osmosis filter element 11, also include the first punching
Wash road, the second flushing stream, concentrated water discharge stream and reflow line.
Wherein, first rinse stream one end connect with the dense water out of reverse osmosis filter element 11, the other end and reverse osmosis filter element
The water inlet of 11 connects, and the first flushing stream is provided with the first valve system for controlling its break-make.When the first valve system
When opening, first rinses stream conducting, and the dense water that reverse osmosis filter element 11 is discharged can be expelled directly out and pass through the first flushing stream stream
It is back to reverse osmosis filter element 11 and the filter membrane of reverse osmosis filter element 11 is rinsed.
Stream one end connects with the dense water out of reverse osmosis filter element 11, the other end enters with reverse osmosis filter element 11 in second flushing
The mouth of a river connects, and wherein, second rinses stream is provided with for controlling its break-make and can the second valve system of pulse-type drainage.Need
Being noted that above-mentioned pulse-type drainage refers to, flushing current are pulse-type drainage, by unexpected supercharging hydraulic pressure and unexpected release
Filter membrane is rinsed by the mode of frequent transitions.Above-mentioned second valve system can be made up of than valve, also the dense water of electromagnetism
Can be made up of than valve electromagnetic valve and normally opened dense water.
Concentrated water discharge stream one end connects with the dense water out of reverse osmosis filter element 11, and the other end is for going out concentrated water drainage to outward
Boundary, concentrated water discharge stream is provided with the 3rd valve system controlling its break-make.
Reflow line one end connects with the dense water out of reverse osmosis filter element 11, the other end and the water inlet of reverse osmosis filter element 11
Connect, and reflow line is provided with the 4th valve system controlling its break-make.
Being arranged such, in the technical scheme that the present embodiment provides, reverse osmosis filter element 11 the dense water flowed out can be different
Processing stage respectively enter the first flushing stream, second rinse stream, concentrated water discharge stream and reflow line process.Specifically
As described below:
After water purifier powers on, carrying out step: S1, the first valve system controls the first flushing stream conducting, to reverse osmosis
Filter element 11 is rinsed；S2, after reverse osmosis filter element 11 is rinsed a second, the first valve system, second valve system close,
4th valve system is closed, and the 3rd valve system is opened, so that concentrated water drainage goes out the external world；S3, after concentrated water drainage goes out the extraneous b second, second
Valve system, the 4th valve system are opened, and the 3rd valve system is closed, so that a dense water part for the discharge of reverse osmosis filter element 11
By the second flushing, reverse osmosis filter element 11 is rinsed by stream, another part flows back into reverse osmosis filter element 11 by reflow line
In；S4, after the second valve system, the 4th valve system open the c second, the second valve system, the 4th valve system are closed, the 3rd valve
Door system is opened, and concentrated water drainage goes out to the external world；S5, during water purification mechanism pure water, repeats step S2, S3 and S4；Wherein, a ＞ 0, b ＞ 0,
C ＞ 0.
It is arranged such, the water purifier that the present embodiment provides, reverse osmosis filter element 11 uses pulsed rinse and discontinuous returns
Flow control, can reduce concentrated water discharge, improves the system response rate, can slow down the filter membrane surface concentration polarization of reverse osmosis filter element 11 simultaneously
Change, extend membrane life.
Refer to Fig. 1 and Fig. 2, the water purifier that the present embodiment provides, above-mentioned first rinses stream, second rinses stream, dense
The form that arranges of water drain flow path and reflow line specific as follows can state setting:
The dense water out of reverse osmosis filter element 11 connects has concentrated water drainage to go out main line 12, the water inlet of reverse osmosis filter element 11 be provided with into
Water main line 13, concentrated water drainage go out main line 12 and enter between water main line 13 connect have the first branch road the 14, second branch road 16 and the 3rd branch road
20, first branch road the 14, second branch road 16 and the 3rd branch road 20 are parallel relationship.
Wherein, the first branch road 14 is provided with the first scouring electromagnetic valve 15, to form above-mentioned first flushing stream.Second branch road 16
Being provided with the first normally opened dense water dense water more normally opened than 17, second than 18 and second scouring electromagnetic valve 19, the second normally opened dense water is than 18 and
After two scouring electromagnetic valve 19 parallel connections, dense water normally opened with first is connected than 17, and the second normally opened dense water outlet than 18 is connected with the external world
Logical, the first normally opened dense water than 17 and second scouring electromagnetic valve 19 place stream form second and rinse stream, the first normally opened dense water ratio
17 and second normally opened dense water form concentrated water discharge streams than 18 place streams.3rd branch road 20 is provided with the 3rd normally opened dense water than 21 Hes
Return flow solenoid valve 22, to form reflow line.
Being arranged such, when water purifier powers on, the first scouring electromagnetic valve 15 is opened, and dense water is discharged from the first scouring electromagnetic valve 15
Being rinsed reverse osmosis filter element 11, rinse the first scouring electromagnetic valve 15 power-off after a second, water purifier enters controlling the water circulation pattern.
During water purifier controlling the water circulation, the first scouring electromagnetic valve 15 power-off, the second scouring electromagnetic valve 19 power-off, return flow solenoid valve 22 breaks
Electricity, dense water is discharged than 18 from the first normally opened dense water dense water more normally opened than 17, second, and after the b second of interval, the second scouring electromagnetic valve 19 leads to
Electricity, return flow solenoid valve 22 is energized, and dense water section is discharged outside to than the 17, second scouring electromagnetic valve 19 through the first normally opened dense water, portion
The normally opened dense water of lease making the 3rd than 21, return flow solenoid valve 22 be back to the water inlet of reverse osmosis filter element 11.After the c second of interval, the second punching
Washing electromagnetic valve 19 power-off, return flow solenoid valve 22 power-off, dense water is discharged than 18 from the first normally opened dense water dense water more normally opened than 17, second,
So circulation.
It should be noted that above-mentioned first normally opened dense water dense water more normally opened than 17, second dense water ratio 21 more normally opened than 18 and the 3rd,
For the title of a kind of pulse valve in this area, i.e. it can form pulse water flow.And, each dense water comparison current above-mentioned are made
The resistance become is relatively big, if electromagnetic valve and normally opened dense water ratio are in parallel, when electromagnetic valve and normally opened dense water are opened than simultaneously, current are excellent
First flow through from electromagnetic valve.
It addition, the water purifier that the present embodiment provides can be double water outlet water purifiers, it is possible to for single water outlet water purifier.
Certainly, the present embodiment provide water purifier, its first rinse stream, second rinse stream, concentrated water discharge stream and
Reflow line can be configured as other form, as shown in Figure 3:
Identical with above example, the dense water out of reverse osmosis filter element 11 connect equally have concentrated water drainage go out main line 12,
The water inlet of reverse osmosis filter element 11 is provided with into water main line 13, concentrated water drainage go out main line 12 and enter between water main line 13 connect have first
Road 14 and the second branch road 16, the first branch road 14 and the second branch road 16 are parallel relationship.
Wherein, the first branch road 14 is provided with the first normally opened dense water ratio 17 of scouring electromagnetic valve the 15, second scouring electromagnetic valve 19, first
And the second normally opened dense water ratio 18.
First scouring electromagnetic valve 15 and the first normally opened dense water are in parallel than 17, and the second scouring electromagnetic valve 19 and second is normally opened dense
Water is in parallel than 18, and two parallel flow paths are in series, the first scouring electromagnetic valve 15 and the second scouring electromagnetic valve 19 place stream
Form the first flushing stream, the first scouring electromagnetic valve 15 and the second normally opened dense water ratio 18 or second scouring electromagnetic valve 19 and first
Normally opened dense water forms the second flushing stream than 17 place streams, and the first normally opened dense water dense water more normally opened than 17 and second flows than 18 places
Road forms concentrated water discharge stream.
Second branch road 16 is provided with the 3rd normally opened dense water than 21 with return flow solenoid valve 22, to form reflow line.
It is arranged such,
When water purifier powers on, the first scouring electromagnetic valve 15 is energized, the second scouring electromagnetic valve 19 is energized, and dense water rinses through first
Electromagnetic valve the 15, second scouring electromagnetic valve 19 is discharged the filter membrane to reverse osmosis filter element 11 and is rinsed, and after rinsing a second, first rinses
Electromagnetic valve 15 power-off, the second scouring electromagnetic valve 19 power-off, water purifier enters controlling the water circulation pattern.
During water purifier controlling the water circulation, the first scouring electromagnetic valve 15 power-off, the second scouring electromagnetic valve 19 power-off, return flow solenoid valve 22 breaks
Electricity, dense water is discharged outside to than 18 from the first normally opened dense water dense water more normally opened than 17, second.After the b second of interval, the second scouring electromagnetic valve
19 energisings, return flow solenoid valve 22 is energized, and dense water section is discharged than the 17, second scouring electromagnetic valve 19 through the first normally opened dense water, part
Through the 3rd normally opened dense water than 21, return flow solenoid valve 22 refluxes in reverse osmosis filter element 11.After the c second of interval, the second scouring electromagnetic valve 19
Power-off, return flow solenoid valve 22 power-off, dense water is discharged outside to than 18, so from the first normally opened dense water dense water more normally opened than 17, second
Circulation.
Or during water purifier controlling the water circulation, the first scouring electromagnetic valve 15 power-off, the second scouring electromagnetic valve 19 power-off, return flow solenoid valve
22 power-off, dense water is discharged than 18 from the first normally opened dense water dense water more normally opened than 17, second.After the b second of interval, the first scouring electromagnetic valve 15
Energising, return flow solenoid valve 22 is energized, and dense water section is discharged than 18 through the first normally opened dense water of scouring electromagnetic valve 15, second, partly warp
3rd normally opened dense water than 21, return flow solenoid valve 22 is back in reverse osmosis filter element 11.After the c second of interval, the first scouring electromagnetic valve 15
Power-off, return flow solenoid valve 22 power-off, dense water is discharged outside to than 18, so from the first normally opened dense water dense water more normally opened than 17, second
Circulation.
In the preferred version of the present embodiment, enter water main line 13 and be provided with booster pump 23.Booster pump 23 can increase reverse osmosis
The water entry pressure of filter element 11, improves filter efficiency and cleaning performance.
The water purifier that the present embodiment provides, is also provided with at least one in the upstream entering water main line 13 of reverse osmosis filter element 11
The preposition filter element of level, such as can be provided with an active carbon filter core and super model filter element, under the pure water of reverse osmosis filter element 11 exports
Trip is also provided with at least rearmounted filter element of one-level equally.In such manner, it is possible to be effectively improved drainage effect.
The present embodiment additionally provides the control method of a kind of water purifier, based on the water purifier in example performed as described above, water purifier
After powering on, including step:
S1, the first valve system controls the first flushing stream conducting, is rinsed reverse osmosis filter element 11；
S2, after reverse osmosis filter element 11 is rinsed a second, the first valve system, the second valve system are closed, the 4th valve
System is closed, and the 3rd valve system is opened, so that concentrated water drainage goes out the external world；
S3, after concentrated water drainage goes out the extraneous b second, the second valve system, the 4th valve system are opened, and the 3rd valve system is closed,
So that reverse osmosis filter element 11 is rinsed by a dense water part for the discharge of reverse osmosis filter element 11 by the second flushing stream, another
Part is flow back in reverse osmosis filter element 11 by reflow line；
S4, after the second valve system, the 4th valve system open the c second, the second valve system, the 4th valve system are closed,
3rd valve system is opened, and concentrated water drainage goes out to the external world；
S5, during water purification mechanism pure water, repeats step S2, S3 and S4；
Wherein, a ＞ 0, b ＞ 0, c ＞ 0.
It is arranged such, the control method of the water purifier that the present embodiment provides, it is possible on the basis of improving dense Water Sproading rate,
Solve reverse osmosis membrane performance to decay problem faster.The useful effect that the derivation of this beneficial effect and above-mentioned water purifier are brought
The derivation of fruit is substantially the same, and repeats no more herein.
In order to improve dense Water Sproading rate, the decay of reduction reverse osmosis membrane performance further, the water purification mechanism pure water time reaches d
After hour, the first valve system is opened, and the second valve system, the 3rd valve system and the 4th valve system are closed, and reverse osmosis is filtered
Reverse osmosis filter element 11 is rinsed by the dense water that the dense water out of core 11 flows out by the first flushing stream, and washing time reaches e
After Miao, the first valve system is closed, wherein, and d ＞ 0, e ＞ 0.
Further, when the pressure in the pressure pot 24 of water purifier is more than preset high-pressure value, the first valve system is opened,
Second valve system, the 3rd valve system and the 4th valve system are closed, the dense water that the dense water out of reverse osmosis filter element 11 flows out
Rinsing stream by first to be rinsed reverse osmosis filter element 11, after washing time reaches the f second, the first valve system is closed, its
In, f ＞ 0.So, interruption filter element is rinsed, it is possible to be effectively improved dense Water Sproading rate and the developing result to filter membrane.
In the further preferred version of the present embodiment, when the pressure in the pressure pot 24 of water purifier is less than pre-set low pressure value
Time, the first valve system opens, and the second valve system, the 3rd valve system and the 4th valve system are closed, reverse osmosis filter element 11
Dense water out flow out dense water by first flushing stream reverse osmosis filter element 11 is rinsed, after washing time reaches the g second,
First valve system is closed, wherein, and g >=0.
It addition, can be rinsed filter element according to the TDS value of former water in the present embodiment, wherein, TDS value refers to dissolubility
The total amount value of solid, when the former water TDS value of entrance reverse osmosis filter element 11 is less than predetermined low level, the b second is the b1 second, and the c second is the c1 second；Enter
The former water TDS value entering reverse osmosis filter element 11 is more than predetermined low level and less than when presetting high level, and the b second is the b2 second, and the c second is the c2 second；Enter
Entering the former water TDS value of reverse osmosis filter element 11 more than when presetting high level, the b second is the b3 second, and the c second is the c3 second；Wherein, 0 ＜ b1 ＜ b2 ＜
B3,0 ＜ c1 ＜ c2 ＜ c3.
It is arranged such, further increases dense Water Sproading rate, improve the developing result to filter element.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.
Multiple amendment to these embodiments will be apparent from for those skilled in the art, as defined herein
General Principle can realize without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein and features of novelty phase one
The widest scope caused.
Claims (11)
1. a water purifier, including reverse osmosis filter element (11), it is characterised in that also include:
First rinses stream, and one end connects with the dense water out of described reverse osmosis filter element (11), the other end is filtered with described reverse osmosis
The water inlet of core (11) connects, and described first flushing stream is provided with the first valve system for controlling its break-make；
Second rinses stream, and one end connects with the dense water out of described reverse osmosis filter element (11), the other end is filtered with described reverse osmosis
The water inlet connection of core (11), described second rinses stream is provided with for controlling its break-make and can carry out the of pulse-type drainage
Two valve systems；
Concentrated water discharge stream, one end connects with the dense water out of described reverse osmosis filter element (11), and the other end is for going out concentrated water drainage
To extraneous, described concentrated water discharge stream is provided with the 3rd valve system controlling its break-make；
Reflow line, one end connects with the dense water out of described reverse osmosis filter element (11), the other end and described reverse osmosis filter element
(11) water inlet connects, and described reflow line is provided with the 4th valve system controlling its break-make.
2. water purifier as claimed in claim 1, it is characterised in that the dense water out connection of described reverse osmosis filter element (11) has dense
Water discharges main line (12), the water inlet of described reverse osmosis filter element (11) is provided with into water main line (13), and described concentrated water drainage goes out main line
And described enter to connect between water main line (13) and have (12):
First branch road (14), is provided with the first scouring electromagnetic valve (15), to form described first flushing stream；
Second branch road (16), is provided with the first normally opened dense water ratio (17), the second normally opened dense water ratio (18) and the second scouring electromagnetic valve
(19) with described first normally opened dense water ratio after, described second normally opened dense water ratio (18) is in parallel with described second scouring electromagnetic valve (19)
(17) series connection, the outlet of described second normally opened dense water ratio (18) is connected with the external world, described first normally opened dense water ratio (17) and
Described second scouring electromagnetic valve (19) place stream forms described second and rinses stream, described first normally opened dense water ratio (17) and institute
State the second normally opened dense water ratio (18) place stream and form described concentrated water discharge stream；
3rd branch road (20), is provided with the 3rd normally opened dense water ratio (21) and return flow solenoid valve (22), to form described reflow line.
3. water purifier as claimed in claim 1, it is characterised in that the dense water out connection of described reverse osmosis filter element (11) has dense
Water discharges main line (12), the water inlet of described reverse osmosis filter element (11) is provided with into water main line (13), and described concentrated water drainage goes out main line
And described enter to connect between water main line (13) and have (12):
First branch road (14), is provided with the first scouring electromagnetic valve (15), the second scouring electromagnetic valve (19), the first normally opened dense water ratio (17)
And second normally opened dense water ratio (18), described first scouring electromagnetic valve (15) and described first normally opened dense water ratio (17) be in parallel,
Described second scouring electromagnetic valve (19) and described second normally opened dense water ratio (18) are in parallel, and two parallel flow paths are in series, institute
State the first scouring electromagnetic valve (15) and described second scouring electromagnetic valve (19) place stream forms described first and rinses stream, described
First scouring electromagnetic valve (15) and described second normally opened dense water ratio (18) or described second scouring electromagnetic valve (19) and described
One normally opened dense water ratio (17) place stream forms described second and rinses stream, described first normally opened dense water ratio (17) and described second
Normally opened dense water ratio (18) place stream forms described concentrated water discharge stream；
Described second branch road (16), is provided with the 3rd normally opened dense water ratio (21) and return flow solenoid valve (22), to form described backflow stream
Road.
4. as claimed in claim 2 or claim 3 water purifier, it is characterised in that described in enter water main line (13) and be provided with booster pump (23).
5. water purifier as claimed in claim 4, it is characterised in that enter water main line (13) upstream extremely described in also including being arranged on
Few preposition filter element of one-level.
6. water purifier as claimed in claim 4, it is characterised in that also include the pure water being arranged on described reverse osmosis filter element (11)
The rearmounted filter element of at least one-level of outlet downstream.
7. a control method for water purifier, based on the water purifier as described in any one of claim 1-6, it is characterised in that institute
State after water purifier powers on, including step:
S1, described first valve system controls described first and rinses stream conducting, is rinsed described reverse osmosis filter element (11)；
S2, after described reverse osmosis filter element (11) is rinsed a second, described first valve system, described second valve system close
Close, described 4th valve system is closed, and described 3rd valve system is opened, so that concentrated water drainage goes out the external world；
S3, after concentrated water drainage goes out the extraneous b second, described second valve system, the 4th valve system are opened, and the 3rd valve system is closed,
So that a dense water part for the discharge of described reverse osmosis filter element (11) rinses stream to described reverse osmosis filter element by described second
(11) be rinsed, another part is flow back in described reverse osmosis filter element (11) by described reflow line；
S4, after described second valve system, the 4th valve system open the c second, described second valve system, the 4th valve system close
Closing, described 3rd valve system is opened, and described concentrated water drainage goes out to the external world；
S5, during described water purification mechanism pure water, repeating said steps S2, S3 and S4；
Wherein, a ＞ 0, b ＞ 0, c ＞ 0.
8. control method as claimed in claim 7, it is characterised in that after the described water purification mechanism pure water time reaches d hour, institute
State the first valve system to open, described second valve system, the 3rd valve system and described 4th valve system close, described instead
The dense water that the dense water out of infiltration filter element (11) flows out rinses stream by described first to be carried out described reverse osmosis filter element (11)
Rinsing, after washing time reaches the e second, described first valve system is closed, wherein, and d ＞ 0, e ＞ 0.
9. water purifier as claimed in claim 7 or 8, it is characterised in that when the pressure in the pressure pot of described water purifier is more than
During preset high-pressure value, described first valve system is opened, described second valve system, the 3rd valve system and described 4th valve
System is closed, and the dense water that the dense water out of described reverse osmosis filter element (11) flows out rinses stream to described reverse osmosis by described first
Filter element (11) is rinsed thoroughly, and after washing time reaches the f second, described first valve system is closed, wherein, and f ＞ 0.
10. water purifier as claimed in claim 7 or 8, it is characterised in that when the pressure in the pressure pot of described water purifier is less than
During pre-set low pressure value, described first valve system is opened, described second valve system, the 3rd valve system and described 4th valve
System is closed, and the dense water that the dense water out of described reverse osmosis filter element (11) flows out rinses stream to described reverse osmosis by described first
Filter element (11) is rinsed thoroughly, and after washing time reaches the g second, described first valve system is closed, wherein, and g >=0.
11. water purifiers as claimed in claim 7, it is characterised in that in described step S3 and S4, enter described reverse osmosis filter element
(11), when former water TDS value is less than predetermined low level, the described b second is the b1 second, and the described c second is the c1 second；Enter described reverse osmosis filter element
(11) former water TDS value is more than predetermined low level and less than when presetting high level, and the described b second is the b2 second, and the described c second is the c2 second；Enter
The former water TDS value of described reverse osmosis filter element (11) is more than when presetting high level, and the described b second is the b3 second, and the described c second is the c3 second；Wherein,
0 ＜ b1 ＜ b2 ＜ b3,0 ＜ c1 ＜ c2 ＜ c3.
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