CN109279705A - Water purifier and control method thereof - Google Patents
Water purifier and control method thereof Download PDFInfo
- Publication number
- CN109279705A CN109279705A CN201710596388.XA CN201710596388A CN109279705A CN 109279705 A CN109279705 A CN 109279705A CN 201710596388 A CN201710596388 A CN 201710596388A CN 109279705 A CN109279705 A CN 109279705A
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- Prior art keywords
- water
- reverse osmosis
- filter
- osmosis membrane
- solenoid valve
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 327
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 101
- 239000012528 membrane Substances 0.000 claims abstract description 95
- 238000001914 filtration Methods 0.000 claims abstract description 17
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 10
- 241000894006 Bacteria Species 0.000 abstract description 10
- 238000001514 detection method Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract 2
- 238000011045 prefiltration Methods 0.000 abstract 2
- 238000009395 breeding Methods 0.000 abstract 1
- 230000001488 breeding effect Effects 0.000 abstract 1
- 239000008399 tap water Substances 0.000 abstract 1
- 235000020679 tap water Nutrition 0.000 abstract 1
- 238000004064 recycling Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- -1 for re-filtering Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses a water purifier and a control method thereof, wherein the water purifier comprises a control module, a pre-filter, a reverse osmosis membrane and a post-filter which are sequentially connected, a water inlet of the pre-filter is connected with a tap water pipe through a raw water inlet pipe, a water outlet of the post-filter is connected with a pure water tap through a pure water outlet pipe, a water outlet electromagnetic valve and a water production TDS detection element are arranged in a pipeline between the reverse osmosis membrane and the post-filter, two ends of the reverse osmosis membrane are also connected with first bypass pipes, first bypass electromagnetic valves are arranged in the first bypass pipes, and the water outlet electromagnetic valve, the water production TDS detection element and the first bypass electromagnetic valves are respectively connected with the control module. According to the water purifier disclosed by the invention, the waterway system is adjusted, pseudo pure water with excessive TDS is bypassed to the water inlet of the reverse osmosis membrane through the bypass pipeline for secondary filtration, so that the problem that the TDS of the discharged pure water is excessive due to bacteria breeding at the rear end of the filter is solved, and the discharged pure water is qualified true pure water.
Description
Technical field
The present invention relates to a kind of water purifiers, specifically, being to be related to a kind of reverse osmosis water purifier.
Background technique
As the pollution of water resource is got worse, water purifier is widely applied, best reverse osmosis net of filter effect
Hydrophone is even more to obtain unprecedented favor.It is especially currently on the market even more the reverse osmosis water purifier of popular big flow, it is big to flow
Amount reverse osmosis water purifier eliminates the pressure pot that may be bred bacterium and generate peculiar smell.But when for a long time without using water purification
Machine when fetching water for the first time, is limited to the characteristic of reverse osmosis membrane itself, and just pure water TDS when beginning is exceeded, and end water route can generate
Bacterium.And for a user, be using the case where water for the first time it is most, this, which has resulted in the most of the time, using pure water is all
Non-fully pure water is taken.
This problem is not solved effectively at present, and some producers is provided with light prompt, and the exceeded display of TDS is yellow
Lamp shows green light when TDS is normal, bulletin user etc., which has given a green light, just to be started to fetch water.This brings puzzlement to user, because of water
It is to have very big pressure at heart always in stream, the moment to stare at water flow and indicator light.The experience value of user is very poor.
Summary of the invention
If the present invention does not use for a long time in order to solve existing water purifier, the rear end of filter breeds bacterium etc. and causes out
Pure water TDS exceeded problem proposes a kind of water purifier and its control method, can solve the above problem.
In order to solve the above-mentioned technical problem, the present invention is achieved by the following scheme:
A kind of water purifier, including control module, sequentially connected fore filter, reverse osmosis membrane and post-filter, it is described
The water inlet of fore filter is connect by raw water water inlet pipe with running water pipe, and the water outlet of the post-filter passes through pure water
Outlet pipe is connect with pure water tap, and water outlet electromagnetism is provided in the pipeline between the reverse osmosis membrane and the post-filter
Valve and water TDS detecting element processed, the both ends of the reverse osmosis membrane are also connected with the first bypass pipe, are arranged in first bypass pipe
Have the first bypass solenoid valve, the water outlet solenoid valve, water TDS detecting element processed and the first bypass solenoid valve respectively with the control
The connection of molding block.
It further, further include the second bypass pipe, second bypass pipe one end is connect with the pure water outlet pipe, in addition
One end is connect with the water inlet end of the reverse osmosis membrane, is provided with the second bypass solenoid valve in second bypass pipe, and described second
Bypass solenoid valve is connect with the control module.
Further, there is the water storage cavity connecting with the water outlet of the post-filter, institute in the post-filter
It states and is provided with air bag in water storage cavity, the air bag is connect by stomata with air pump, and the air pump is connect with control module.
Further, inlet water solenoid valve is disposed in the pipeline between the fore filter and the reverse osmosis membrane
And booster pump, the booster pump and inlet water solenoid valve are connect with the control module respectively.
Further, low tension switch, the reverse osmosis membrane and the post-filter are provided in the raw water water inlet pipe
Between pipeline in be provided with high-voltage switch gear, the low tension switch and high-voltage switch gear are connect with the control module respectively.
Further, the fore filter includes paper folding filter core and/or preposition carbon-point, and the postposition filter core is postposition carbon
Stick.
The present invention proposes a kind of water purifier control method simultaneously, and the water purifier includes control module, sequentially connected
Fore filter, reverse osmosis membrane and post-filter, the water inlet of the fore filter is by raw water water inlet pipe and originally
The water outlet of water pipe connection, the post-filter is connect by pure water outlet pipe with pure water tap, which is characterized in that described
Water outlet solenoid valve and water TDS detecting element processed are provided in pipeline between reverse osmosis membrane and the post-filter, it is described anti-
The both ends of permeable membrane are also connected with the first bypass pipe, and the first bypass solenoid valve, the water outlet are provided in first bypass pipe
Solenoid valve, water TDS detecting element processed and the first bypass solenoid valve are connect with the control module respectively, the water purifier control
Method the following steps are included:
(1), pure water tap is opened, the raw water in running water pipe is successively filtered through fore filter, reverse osmosis membrane, water processed
TDS detecting element detects the TDS value of the reverse osmosis membrane water outlet, and is sent to control module；
(2), control module compares the TDS value that the reverse osmosis membrane is discharged with preset threshold, if the reverse osmosis membrane is discharged
TDS value be higher than preset threshold, open the first bypass solenoid valve, close water outlet solenoid valve, the water outlet of the reverse osmosis membrane is through the
The water inlet that bypass line is recycled to the reverse osmosis membrane is for re-filtering；
If the TDS value of the reverse osmosis membrane water outlet is not higher than preset threshold, water outlet solenoid valve is opened, closes the first bypass electromagnetism
The water outlet of valve, the reverse osmosis membrane enters pure water tap stream through pure water outlet pipe after the post-filter is filtered
Out.
Further, there is the water storage cavity connecting with the water outlet of the post-filter, institute in the post-filter
It states and is provided with air bag in water storage cavity, the air bag is connect by stomata with air pump, and the air pump is connect with control module, when first
When bypass solenoid valve is opened and water outlet solenoid valve is closed, the air pump is air bag inflation, and air bag will be in the water storage cavity
Pure water squeeze out to pure water outlet pipe, then flowed out through pure water tap.
Further, after closing pure water tap, if the pipe between the reverse osmosis membrane and the post-filter
Pressure in road is higher than the close value of the high-voltage switch gear, opens the water outlet solenoid valve, the raw water in running water pipe successively passes through
Fore filter, reverse osmosis membrane, post-filter continue filtering water processed, and the air bag is compressed, is stored in by made pure water
In the water storage cavity.
Further, the water purifier further includes the second bypass pipe, and second bypass pipe one end and the pure water are discharged
Pipe connection, other end are connect with the water inlet end of the reverse osmosis membrane, and the second bypass electromagnetism is provided in second bypass pipe
Valve, second bypass solenoid valve are connect with the control module, and low tension switch is provided in the raw water water inlet pipe, described anti-
High-voltage switch gear, the fore filter and the reverse osmosis membrane are provided in pipeline between permeable membrane and the post-filter
Between pipeline in be disposed with inlet water solenoid valve and booster pump, the inlet water solenoid valve and booster pump respectively with it is described
Control module connection, when the time that water purifier stops working reaches the time interval of setting, open second bypass solenoid valve,
Booster pump and water outlet solenoid valve close inlet water solenoid valve, the reverse osmosis membrane and postposition mistake under the pressure of the booster pump
The water inlet that pure water in filter is recycled to the reverse osmosis membrane through second bypass pipe is for re-filtering.
Compared with prior art, the advantages and positive effects of the present invention are: water purifier of the invention, by water circuit system
It is adjusted, TDS exceeded pseudo- pure water is bypassed by bypass line to the water inlet of reverse osmosis membrane, for re-filtering, solution
If water purifier of having determined does not use for a long time, the rear end of filter breeds the problem that bacterium etc. causes pure water TDS exceeded, guarantees
Gone out pure water is qualified true pure water.
After the detailed description of embodiment of the present invention is read in conjunction with the figure, the other features and advantages of the invention will become more
Add clear.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of embodiment system composition schematic diagram of water purifier proposed by the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment one
The present embodiment proposes a kind of water purifier, as shown in Figure 1, before including control module (not shown), being sequentially connected
Set filter 11, reverse osmosis membrane 12 and post-filter 13, the water inlet of fore filter 11 by raw water water inlet pipe 14 with
The water outlet of running water pipe connection, post-filter 13 is connect by pure water outlet pipe 16 with pure water tap, reverse osmosis membrane 12
Water outlet solenoid valve 18 and water TDS detecting element 19 processed are provided in pipeline between post-filter 13, reverse osmosis membrane 12
Both ends are also connected with the first bypass pipe 20, and the first bypass solenoid valve 21, water outlet solenoid valve 18, system are provided in the first bypass pipe 20
Water TDS detecting element 19 and the first bypass solenoid valve 21 are connect with control module respectively, receive the control of control module.Preceding
It sets in 13 tertiary filter of filter 11, reverse osmosis membrane 12 and post-filter, wherein fore filter 11 is for filtering certainly
Impurity in water, prevents blocking reverse osmosis membrane 12, and post-filter 13 plays the role of improving mouthfeel, the hole of reverse osmosis membrane 12
Diameter is minimum, plays main filtration, dissolved salts, colloid, microorganism, the organic matter etc. that can be effectively removed in water,
Therefore, it if the pure water in 12 rear end water route of reverse osmosis membrane causes TDS exceeded since growth bacterium being not used for a long time, is formed pseudo- pure
Water, this water purifier is by being arranged the first bypass pipe 20 at the both ends of reverse osmosis membrane 12, again by the pseudo- pure water of 12 rear end of reverse osmosis membrane
It is recycled in the entrance of reverse osmosis membrane 12 and is filtered again, wherein the open and close of each valve, the switching in water route are by control mould
Block control is completed, the TDS value of water TDS detecting element 19 processed periodically detection 12 rear end of reverse osmosis membrane water outlet, if the reverse osmosis
The TDS value of permeable membrane water outlet is not higher than preset threshold, then opens water outlet solenoid valve, closes the first bypass solenoid valve, reverse osmosis membrane 12
Water outlet after post-filter 13 is filtered through pure water outlet pipe enter pure water tap outflow.
The exceeded pseudo- pure water of TDS is passed through bypass line by being adjusted to water circuit system by the water purifier of the present embodiment
It bypasses to the water inlet of reverse osmosis membrane, it is for re-filtering, it is not used for a long time if solving water purifier, the rear end of filter is grown
The problem that endophytic bacteria etc. causes pure water TDS exceeded guarantees that pure water is qualified true pure water.
Due to when the pure water TDS in 12 rear end water route of reverse osmosis membrane is exceeded water outlet solenoid valve 18 close namely it is reverse osmosis
The water outlet of film 12 can not enter tap through post-filter 13 and flow out, namely state at this time to be user open tap and
There is no pure water outflow, it is longer by period of reservation of number in order to prevent, or be mistakenly considered mechanical disorder and cause to misunderstand, post-filter
There is the water storage cavity 15 connecting with the water outlet of post-filter 13 in 13, air bag 22 is provided in water storage cavity 15, air bag 22 is logical
Air passing hole is connect with air pump (not shown), and air pump is connect with control module, receives the control of control module.When the first bypass
When solenoid valve 21 is opened and water outlet solenoid valve 18 is closed namely pure water is recycled again when being filtered by reverse osmosis membrane 12, control
Molding block controls air pump and opens, and inflates for air bag 22, and air bag 22 squeezes out in water storage cavity 15 pure water to pure water outlet pipe 16, so
It is flowed out by pure water tap.In pseudo- pure water recycling filter process, the pure water stored in water storage cavity 15 can be squeezed out
User is supplied, prevents user from falling into a long wait, or cause the misunderstanding for being mistakenly considered mechanical disorder.In the process, recycling
Pseudo- pure water can achieve the standard of TDS by filtering again, and then stop circulation, and water outlet solenoid valve is opened, reverse osmosis membrane 12
Water outlet enters the outflow of pure water tap through pure water outlet pipe after post-filter 13 is filtered.
Inlet water solenoid valve 17 and booster pump are disposed in pipeline between fore filter 11 and reverse osmosis membrane 12
23, booster pump 23 and inlet water solenoid valve 17 are connect with control module respectively, receive the control of control module, inlet water solenoid valve 17
For controlling whether to intake for reverse osmosis membrane 12, booster pump 23 is used to increase the pressure in 12 front-end pipelines of reverse osmosis membrane, guarantees
Water can be normally filtered by reverse osmosis membrane 12.
It is provided with low tension switch 24 in raw water water inlet pipe 14, is arranged in the pipeline between reverse osmosis membrane 12 and post-filter
There is high-voltage switch gear 25, wherein low tension switch 24 and high-voltage switch gear 25 are connect with control module respectively, receive the control of control module
System.
Since the pseudo- pure water of the water outlet of reverse osmosis membrane 12 only recycled by aforementioned pipeline loop structure
Filter, and the rear end of post-filter 13 is also likely to be present the situation that bacteria breed causes TDS exceeded, as shown in Figure 1, this water purifier
It further include the second bypass pipe 26,26 one end of the second bypass pipe is connect with pure water outlet pipe 16, other end and reverse osmosis membrane 12
Water inlet end connects, and the second bypass solenoid valve 27 is provided in the second bypass pipe 26, and the second bypass solenoid valve 27 connects with control module
It connects.When the time that water purifier stops working reaches the time interval of setting, open the second bypass solenoid valve 27, booster pump 23 and
Water outlet solenoid valve 18 closes inlet water solenoid valve 17, pure in reverse osmosis membrane and post-filter 13 under the pressure of booster pump 23
The water inlet that water is recycled to reverse osmosis membrane 12 through the second bypass pipe 27 is for re-filtering.And then it can solve post-filter 13
The exceeded problem of water outlet TDS, guarantee that pure water is the true pure water of qualification.
As a preferred embodiment, fore filter 11 includes paper folding filter core and/or preposition carbon-point, and postposition filter core is
Postposition carbon-point.
Embodiment two
The present embodiment proposes a kind of water purifier control method, and the water purifier in the present embodiment is used as recorded in embodiment one
Water purifier, specifically, as shown in Figure 1, the water purifier include control module, it is sequentially connected fore filter 11, reverse osmosis
The water inlet of film 12 and post-filter 13, fore filter 11 is connect by raw water water inlet pipe 14 with running water pipe, postposition
The water outlet of filter 13 is connect by pure water outlet pipe 16 with pure water tap, between reverse osmosis membrane 12 and post-filter 13
Pipeline in be provided with water outlet solenoid valve 18 and water TDS detecting element 19 processed, the both ends of reverse osmosis membrane 12 are also connected with by the of first
Siphunculus 20, is provided with the first bypass solenoid valve 21 in the first bypass pipe 20, water outlet solenoid valve 18, water TDS detecting element 19 processed with
And first bypass solenoid valve 21 connect respectively with control module, receive the control of control module, the water purifier control method packet
Include following steps:
S1, pure water tap is opened, the raw water in running water pipe is successively filtered through fore filter 11, reverse osmosis membrane 12,
Water TDS detecting element 19 processed detects the TDS value that reverse osmosis membrane 12 is discharged, and is sent to control module；
S2, control module compare the TDS value that reverse osmosis membrane 12 is discharged with preset threshold, if the TDS that reverse osmosis membrane 12 is discharged
Value is higher than preset threshold, opens the first bypass solenoid valve 21, closes water outlet solenoid valve 18, and the water outlet of reverse osmosis membrane 12 is through by first
The water inlet that siphunculus 20 is recycled to reverse osmosis membrane 12 is for re-filtering；
If the TDS value that reverse osmosis membrane 12 is discharged is not higher than preset threshold, water outlet solenoid valve 18 is opened, closes the first bypass electromagnetism
Valve 21, the water outlet of reverse osmosis membrane 12 enter pure water tap stream through pure water outlet pipe 16 after post-filter 13 is filtered
Out.
The water purifier control method of the present embodiment, by control TDS exceeded pseudo- pure water by bypass line bypass to
The water inlet of reverse osmosis membrane, it is for re-filtering, it is not used for a long time if solving water purifier, the rear end of filter breeds bacterium
Etc. the problem for causing pure water TDS exceeded, guarantee that pure water is qualified true pure water.
Due to when the pure water TDS in 12 rear end water route of reverse osmosis membrane is exceeded water outlet solenoid valve 18 close namely it is reverse osmosis
The water outlet of film 12 can not enter tap through post-filter 13 and flow out, namely state at this time to be user open tap and
There is no pure water outflow, it is longer by period of reservation of number in order to prevent, or be mistakenly considered mechanical disorder and cause to misunderstand, post-filter
There is the water storage cavity 15 connecting with the water outlet of post-filter 13 in 13, air bag 22 is provided in water storage cavity 15, air bag 22 is logical
Air passing hole is connect with air pump (not shown), and air pump is connect with control module, receives the control of control module.When the first bypass
When solenoid valve 21 is opened and water outlet solenoid valve 18 is closed, air pump is air bag inflation, and air bag will be pure in the water storage cavity
Water is squeezed out to pure water outlet pipe, is then flowed out through pure water tap.It, can be by water storage cavity in pseudo- pure water recycling filter process
The pure water stored in 15 squeezes out supply user, prevents user from falling into a long wait, or cause the misunderstanding for being mistakenly considered mechanical disorder.
In the process, the pseudo- pure water of recycling can achieve the standard of TDS by filtering again, and then stop circulation, be discharged electromagnetism
Valve is opened, and the water outlet of reverse osmosis membrane 12 enters pure water tap stream through pure water outlet pipe after post-filter 13 is filtered
Out.
In order to guarantee next normal use, needs after by water storage cavity 15, fill water in time for it, closed in this method
It closes after pure water tap, if the pressure in the pipeline between reverse osmosis membrane 12 and post-filter 13 is higher than high-voltage switch gear 25
Close value opens water outlet solenoid valve 18, and the raw water in running water pipe is successively through fore filter 11, reverse osmosis membrane 12, postposition mistake
Filter 13 continues filtering water processed, and air bag 22 is compressed, is stored in water storage cavity 15 by made pure water.
Since the pseudo- pure water of the water outlet of reverse osmosis membrane 12 only recycled by aforementioned pipeline loop structure
Filter, and the rear end of post-filter 13 is also likely to be present the situation that bacteria breed causes TDS exceeded, as shown in Figure 1, this water purifier
It further include the second bypass pipe 26,26 one end of the second bypass pipe is connect with pure water outlet pipe 16, other end and reverse osmosis membrane 12
Water inlet end connects, and the second bypass solenoid valve 27 is provided in the second bypass pipe 26, and the second bypass solenoid valve 27 connects with control module
Connect, when the time that water purifier stops working reaches the time interval of setting, open the second bypass solenoid valve 26, booster pump 23 and
Water outlet solenoid valve 18 closes inlet water solenoid valve 17, under the pressure of booster pump 23 in reverse osmosis membrane 12 and post-filter 13
The water inlet that pure water is recycled to reverse osmosis membrane 12 through the second bypass pipe 26 is for re-filtering.And then it can solve post-filter
13 water outlet TDS exceeded problem guarantees that pure water is qualified true pure water.
Certainly, the above description is not a limitation of the present invention, and the present invention is also not limited to the example above, this technology neck
The variations, modifications, additions or substitutions that the those of ordinary skill in domain is made within the essential scope of the present invention, also should belong to this hair
Bright protection scope.
Claims (10)
1. a kind of water purifier, including control module, sequentially connected fore filter, reverse osmosis membrane and post-filter, institute
The water inlet for stating fore filter is connect by raw water water inlet pipe with running water pipe, and the water outlet of the post-filter passes through pure
Water outlet pipe is connect with pure water tap, which is characterized in that in the pipeline between the reverse osmosis membrane and the post-filter
It is provided with water outlet solenoid valve and water TDS detecting element processed, the both ends of the reverse osmosis membrane are also connected with the first bypass pipe, and described
The first bypass solenoid valve, the water outlet solenoid valve, water TDS detecting element processed and the first bypass electromagnetism are provided in bypass line
Valve is connect with the control module respectively.
2. water purifier according to claim 1, which is characterized in that it further include the second bypass pipe, second bypass pipe one
End is connect with the pure water outlet pipe, and other end is connect with the water inlet end of the reverse osmosis membrane, is set in second bypass pipe
It is equipped with the second bypass solenoid valve, second bypass solenoid valve is connect with the control module.
3. water purifier according to claim 1, which is characterized in that have in the post-filter and filtered with the postposition
The water storage cavity of the water outlet connection of device, air bag is provided in the water storage cavity, the air bag is connect by stomata with air pump, described
Air pump is connect with control module.
4. water purifier according to claim 1-3, which is characterized in that the fore filter with it is described reverse osmosis
Be disposed with inlet water solenoid valve and booster pump in pipeline between film, the booster pump and inlet water solenoid valve respectively with institute
State control module connection.
5. water purifier according to claim 1-3, which is characterized in that be provided with low pressure in the raw water water inlet pipe
It switchs, is provided with high-voltage switch gear, the low tension switch and height in the pipeline between the reverse osmosis membrane and the post-filter
It compresses switch and is connect respectively with the control module.
6. water purifier according to claim 1-3, which is characterized in that the fore filter includes paper folding filter core
And/or preposition carbon-point, the postposition filter core are postposition carbon-point.
7. a kind of water purifier control method, which is characterized in that the water purifier is water purifier described in claim 1, described net
Water dispenser control method the following steps are included:
(1), pure water tap is opened, the raw water in running water pipe is successively filtered through fore filter, reverse osmosis membrane, water processed
TDS detecting element detects the TDS value of the reverse osmosis membrane water outlet, and is sent to control module；
(2), control module compares the TDS value that the reverse osmosis membrane is discharged with preset threshold, if the reverse osmosis membrane is discharged
TDS value be higher than preset threshold, open the first bypass solenoid valve, close water outlet solenoid valve, the water outlet of the reverse osmosis membrane is through the
The water inlet that bypass line is recycled to the reverse osmosis membrane is for re-filtering；
If the TDS value of the reverse osmosis membrane water outlet is not higher than preset threshold, water outlet solenoid valve is opened, closes the first bypass electromagnetism
The water outlet of valve, the reverse osmosis membrane enters pure water tap stream through pure water outlet pipe after the post-filter is filtered
Out.
8. water purifier control method according to claim 7, which is characterized in that in the post-filter have with it is described
The water storage cavity of the water outlet connection of post-filter, air bag is provided in the water storage cavity, and the air bag passes through stomata and air pump
Connection, the air pump are connect with control module, when the first bypass solenoid valve is opened and water outlet solenoid valve is closed, the air pump
For air bag inflation, the pure water in the water storage cavity is squeezed out to pure water outlet pipe, is then flowed out through pure water tap by air bag.
9. water purifier control method according to claim 7 or 8, which is characterized in that after closing pure water tap, if
The pressure in pipeline between the reverse osmosis membrane and the post-filter is higher than the close value of the high-voltage switch gear, opens institute
Water outlet solenoid valve is stated, the raw water in running water pipe successively continues to filter through fore filter, reverse osmosis membrane, post-filter
Water processed, made pure water compress the air bag, are stored in the water storage cavity.
10. water purifier control method according to claim 9, which is characterized in that the water purifier further includes the second bypass
Pipe, second bypass pipe one end are connect with the pure water outlet pipe, and other end is connect with the water inlet end of the reverse osmosis membrane,
The second bypass solenoid valve is provided in second bypass pipe, second bypass solenoid valve is connect with the control module, institute
It states and is provided with low tension switch in raw water water inlet pipe, be provided with height in the pipeline between the reverse osmosis membrane and the post-filter
It compresses switch, inlet water solenoid valve and pressurization is disposed in the pipeline between the fore filter and the reverse osmosis membrane
Pump, the inlet water solenoid valve and booster pump connect with the control module respectively, reach when the time that water purifier stops working
The time interval of setting opens second bypass solenoid valve, booster pump and water outlet solenoid valve, closes inlet water solenoid valve,
Pure water under the pressure of the booster pump in the reverse osmosis membrane and post-filter is recycled to described through second bypass pipe
The water inlet of reverse osmosis membrane is for re-filtering.
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| CN113929223A (en) * | 2020-06-29 | 2022-01-14 | 佛山市顺德区美的饮水机制造有限公司 | Water purification method of water purification system |
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