CN108261927A - A kind of life detecting method of the reverse osmosis filter core of water purifier - Google Patents
A kind of life detecting method of the reverse osmosis filter core of water purifier Download PDFInfo
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- CN108261927A CN108261927A CN201810022055.0A CN201810022055A CN108261927A CN 108261927 A CN108261927 A CN 108261927A CN 201810022055 A CN201810022055 A CN 201810022055A CN 108261927 A CN108261927 A CN 108261927A
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- water
- waste water
- reverse osmosis
- filter core
- osmosis filter
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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
- B01D65/10—Testing of membranes or membrane apparatus; Detecting or repairing leaks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/025—Reverse osmosis; Hyperfiltration
Abstract
The embodiment of the invention discloses a kind of life detecting method of the reverse osmosis filter core of water purifier, which includes：Inlet valve, booster pump and reverse osmosis filter core, between inlet valve and reverse osmosis filter core, this method includes booster pump：During water processed, the electric current I of booster pump is detected；The service life of reverse osmosis filter core is determined according to the electric current I of booster pump；Wherein, the service life inversely proportional relationship of the electric current I of booster pump and the reverse osmosis filter core of reverse osmosis membrane.By the embodiment scheme, the calculating accuracy rate of reverse osmosis filter element life is improved, and is not saved cost by water quality impact.
Description
Technical field
The present embodiments relate to water technology, the life detecting method of espespecially a kind of reverse osmosis filter core of water purifier.
Background technology
Mainly there are several ways in the service life of the reverse osmosis filter core of current water purifier：
1st, conventional pattern sets time entire life of reverse osmosis filter core, then according to reverse osmosis filter core usage time meter
Calculate the service life of reverse osmosis filter core.This mode cannot be adaptive according to different quality situation, and the place for often resulting in water quality inferiority is anti-
The service life of infiltration filter core is expired but also display life has residue；The service life of the good reverse osmosis filter core in place of water quality has remaining but shows
It has been used up, error is too big.
2nd, waste water ratio is calculated with the flow of flowmeter detection pure water and the flow of waste water, so as to confirm reverse osmosis filter core
Service life, this mode need to increase 1-2 flowmeter, and cost is higher；± 10% or so, error also compares flowmeter error simultaneously
It is larger.
3rd, the service life of reverse osmosis filter core is calculated with the height of TDS (total dissolved solidss) value, if TDS values are m1 (mg/
Ppm), it is X1=m1*t1 to add up in usage time t1, t1 through the alkaline soluble materials content of water purifier；Pass through in n times
The alkaline soluble materials content of water purifier is Xn=m1*t1+m2*t2+ ... mn*tn, sets the threshold values of water purifier as X, water purifier
Service life Lf=Xn/X, this mode ratio method 1 is good, but only considered TDS values, there are no considering insoluble substance in water,
The error of TDS is very big simultaneously, and the life error of calculating is also very big.
Invention content
An embodiment of the present invention provides a kind of life detecting methods of the reverse osmosis filter core of water purifier, can improve reverse osmosis filter
The calculating accuracy rate in core service life, and do not saved cost by water quality impact.
In order to solve the above technical problems, the embodiment of the present invention adopts the following technical scheme that：
A kind of life detecting method of the reverse osmosis filter core of water purifier, the water purifier include：Inlet valve, booster pump and reverse osmosis
Filter core, between inlet valve and reverse osmosis filter core, this method includes booster pump：
During water processed, the electric current I of booster pump is detected；
The service life of reverse osmosis filter core is determined according to the electric current I of booster pump；
Wherein, the service life inversely proportional relationship of the electric current I of booster pump and the reverse osmosis filter core of reverse osmosis membrane.
Optionally, water purifier further includes：Wastewater valve；Determine that the service life of reverse osmosis filter core includes according to the electric current I of booster pump：
The flow velocity V of the water of booster pump is flowed through according to the electric current I of booster pump acquisitions；
The water flow Q of the unit interval of the source water end (W.E.) of water purifier is calculated according to the flow velocity V of water；
It is calculated according to the water flow Q of the unit interval of source water end (W.E.) and the water flow Q1 of the unit interval of wastewater valve detected
The waste water ratio of water purifier；Wherein, the waste water ratio η of water purifier meets following first relational expressions：η=Q1/Q；
The service life of reverse osmosis filter core is determined according to the waste water ratio of water purifier.
Optionally, the flow velocity V of water of the electric current I of booster pump with flowing through booster pump is linear；According to the electricity of booster pump
The flow velocity V of water that stream I acquisitions flow through booster pump includes：
The flow velocity V of water is calculated according to following second relational expressions：
V=a*I+b, wherein a are the second linear coefficient, and b is first constant.
Optionally, the water flow Q of the unit interval of the source water end (W.E.) of the flow velocity V and water purifier of water is linear；According to water
The flow velocity V water flow Q of unit interval of source water end (W.E.) that calculate water purifier include：
The water flow Q of the unit interval of source water end (W.E.) is calculated according to following third relational expressions：
Q=c*V, wherein c are third linear coefficient.
Optionally, the service life for determining reverse osmosis filter core according to the waste water ratio of water purifier includes：
By the waste water ratio η of the water purifier calculated and preset waste water ratio standard value η0It compares；
When the waste water ratio η of the water purifier calculated is greater than or equal to waste water ratio standard value η0When, determine reverse osmosis filter core
Reach the default service life；
When the waste water ratio η of the water purifier calculated is less than waste water ratio standard value η0When, determine that reverse osmosis filter core is not up to pre-
If the service life.
Optionally, waste water ratio standard value η0Meet the 4th following relational expressions：
η0=f*T+g；Wherein, T is the inflow temperature of the source water end (W.E.) of water purifier, and f is the 4th linear coefficient, and g is normal for second
Number.
Optionally, waste water ratio standard value η0Meet the 5th following relational expressions：
η0=k* η1；
Wherein, k be the 5th linear coefficient, k>1；η1For minimum waste water ratio, η1Meet the 6th following relational expressions：η1=h*T
+i；H is the 6th linear coefficient, and i is three constant.
Optionally, this method further includes：
In advance to minimum waste water ratio η1It is modified, obtains revised minimum waste water ratio η2；
According to revised minimum waste water ratio η2Waste water ratio standard value η is calculated with the 5th relational expression0。
Optionally, in advance to minimum waste water ratio η1It is modified, obtains revised minimum waste water ratio η2Including：
First waste water ratio η is obtained according to the first relational expressiona；
Second waste water ratio η is obtained according to the 6th relational expressionb；
According to the first waste water ratio ηaAnd the second waste water ratio ηbMathematic interpolation waste water ratio correction amount η；Wherein, Δ η=
ηa-ηb；
Waste water ratio correction amount η is added in the 6th relational expression and calculates revised minimum waste water ratio η2；Wherein, η2=
h*T+i+Δη。
Optionally, this method further includes：
Before using water purifier water, test of many times is carried out to water purifier to obtain multiple waste water ratio correction amounts of water purifier
Δη；
The average value of multiple waste water ratio correction amount η is asked for as the revised minimum waste water ratio η of calculating2Final waste water
Correction amount.
The advantageous effect of the embodiment of the present invention includes：
1st, the water purifier of the embodiment of the present invention includes：Inlet valve, booster pump and reverse osmosis filter core, booster pump are located at inlet valve
Between reverse osmosis filter core, this method includes：During water processed, the electric current I of booster pump is detected；According to the electric current I of booster pump
Determine the service life of reverse osmosis filter core；Wherein, the service life inversely proportional pass of the electric current I of booster pump and the reverse osmosis filter core of reverse osmosis membrane
System.By the embodiment scheme, the calculating accuracy rate of reverse osmosis filter element life is improved, and is not saved by water quality impact
Cost.
2nd, the water purifier of the embodiment of the present invention further includes：Wastewater valve；Reverse osmosis filter core is determined according to the electric current I of booster pump
Service life includes：The flow velocity V of the water of booster pump is flowed through according to the electric current I of booster pump acquisitions；Water purifier is calculated according to the flow velocity V of water
The water flow Q of the unit interval of source water end (W.E.)；According to the water flow Q of the unit interval of source water end (W.E.) and the unit of wastewater valve detected
The water flow Q1 of time calculates the waste water ratio of water purifier；Wherein, the waste water ratio η of water purifier meets following first relational expressions：η=
Q1/Q；The service life of reverse osmosis filter core is determined according to the waste water ratio of water purifier.It, can be according to booster pump by the embodiment scheme
Electric current I, booster pump water flow velocity V and source water end (W.E.) unit interval water flow Q between linear relationship obtain waste water ratio,
So as to obtain the service life of reverse osmosis membrane according to waste water ratio, which is not influenced by water quality, improves computational accuracy.
3rd, the flow velocity V of water of the electric current I of the booster pump of the embodiment of the present invention with flowing through booster pump is linear；According to increasing
The flow velocity V of water that the electric current I acquisitions of press pump flow through booster pump includes：The flow velocity V of water is calculated according to following second relational expressions：V=
A*I+b, wherein a are the second linear coefficient, and b is first constant.The water of the unit interval of the flow velocity V of water and the source water end (W.E.) of water purifier
Flow Q is linear；The water flow Q that the unit interval of the source water end (W.E.) of water purifier is calculated according to the flow velocity V of water includes：Under
State the water flow Q that third relational expression calculates the unit interval of source water end (W.E.)：Q=c*V, wherein c are third linear coefficient.The embodiment
Solution principle is simple, is readily appreciated that, and easy to implement, and R＆D costs are low.
4th, the waste water ratio standard value η of the embodiment of the present invention0Meet the 4th following relational expressions：η0=f*T+g；Wherein, T is
The inflow temperature of the source water end (W.E.) of water purifier, f are the 4th linear coefficient, and g is second constant.The embodiment scheme considers temperature pair
The influence of waste water ratio improves calculating accuracy rate.
5th, the waste water ratio standard value η of the embodiment of the present invention0Meet the 5th following relational expressions：η0=k* η1；Wherein, k
Five linear coefficients, k>1；η1For minimum waste water ratio, η1Meet the 6th following relational expressions：η1=h*T+i；H is the 6th linear system
Number, i is three constant.The embodiment scheme determines waste water ratio standard value η according to minimum waste water ratio0, scheme is simple and is easy to root
Factually border is it needs to be determined that go out rational waste water ratio standard value η0。
6th, the method for the embodiment of the present invention further includes：In advance to minimum waste water ratio η1It is modified, acquisition is revised most
Low waste water ratio η2；According to revised minimum waste water ratio η2Waste water ratio standard value η is calculated with the 5th relational expression0.The embodiment scheme
According to revised minimum waste water ratio η2Calculate waste water ratio standard value η0, reduce waste water ratio standard value η0Calculating error, so as to
Improve the judgment accuracy of reverse osmosis filter element life.
7th, the method for the embodiment of the present invention further includes：Using before water purifier water, water purifier is carried out test of many times with
Obtain multiple waste water ratio correction amount η of water purifier；After the average value conduct calculating amendment for asking for multiple waste water ratio correction amount η
Minimum waste water ratio η2Final waste water correction amount.The embodiment scheme calculates waste water according to the method that many experiments are averaged
Than correction amount η, the calculating accuracy rate of waste water ratio correction amount η is improved, so as to further reduced waste water ratio standard value η0
Calculating error, improve the judgment accuracy of reverse osmosis filter element life.
Description of the drawings
The embodiment of the present invention is described further below in conjunction with the accompanying drawings：
Fig. 1 is the life detecting method flow chart of the reverse osmosis filter core of water purifier of the embodiment of the present invention；
Fig. 2 is the method flow diagram that the electric current I according to booster pump of the embodiment of the present invention determines the service life of reverse osmosis filter core；
Fig. 3 is the method flow that the waste water ratio according to water purifier of the embodiment of the present invention determines the service life of reverse osmosis filter core
Figure；
Fig. 4 is the water yield of current water purifier and the relation schematic diagram of the inflow temperature T of source water end (W.E.)；
Fig. 5 is the minimum waste water ratio η of the embodiment of the present invention2With waste water ratio standard value η0Relation schematic diagram；
Fig. 6 is the embodiment of the present invention to minimum waste water ratio η2The schematic diagram being modified.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention
Embodiment be described in detail.It should be noted that in the absence of conflict, in the embodiment and embodiment in the application
Feature mutually can arbitrarily combine.
Step shown in the flowchart of the accompanying drawings can be in the computer system of such as a group of computer-executable instructions
It performs.Also, although logical order is shown in flow charts, it in some cases, can be to be different from herein suitable
Sequence performs shown or described step.
Embodiment one
A kind of life detecting method of the reverse osmosis filter core of water purifier, the water purifier include：Inlet valve, booster pump and reverse osmosis
Filter core, booster pump is between inlet valve and reverse osmosis filter core, as shown in Figure 1, the method comprising the steps of S11-S12：
S11, during water processed, detect the electric current I of booster pump.
S12, the service life that reverse osmosis filter core is determined according to the electric current I of booster pump；
Wherein, the service life inversely proportional relationship of the electric current I of booster pump and the reverse osmosis filter core of reverse osmosis membrane.
In embodiments of the present invention, the linear passes of flow velocity V of the operating current I of booster pump and water in booster pump working environment
System；That is when booster pump works in static water, booster pump operating current I is maximum, when water has certain flow rate, work
Make electric current I to become smaller, and flow velocity V is bigger, operating current is smaller；Therefore it can be pushed away according to the size of the operating current I of booster pump
The flow velocity V of the water of booster pump is calculated, so as to know the water flow Q of the unit interval of the source water end (W.E.) of water purifier.Due in water purifier
Wastewater valve determine in the case of, what the water flow Q1 of the unit interval at wastewater valve was also to determine；It is known that the waste water of water purifier
Meet following first relational expressions than η：η=Q1/Q, i.e. waste water ratio η and the water flow Q of the unit interval of source water end (W.E.) are in inverse proportion letter
Number, therefore the waste water ratio of the more big then water purifiers of the water flow Q of the unit interval of the source water end (W.E.) of water purifier is bigger, and water purifier
The service life of waste water ratio and reverse osmosis filter core is in a linear relationship, when waste water ratio is bigger, represents the usage time of reverse osmosis filter core
Longer (i.e. service life is longer), remaining life is shorter.
In embodiments of the present invention, according to above-mentioned theory, the service life that can fit reverse osmosis filter core, (service life here was
Refer to the duration that used of reverse osmosis filter core, i.e. service life) inversely prroportional relationship formula with the electric current I of booster pump：A=m/ (rI+s)
+ n, wherein, A is the service life of reverse osmosis filter core, and m is proportionality coefficient, and r is linear coefficient, and s and n are constant.M, r, s and n can be through
Test of many times acquisition is crossed, can also be obtained based on experience value.
In embodiments of the present invention, it based on above-mentioned inversely prroportional relationship formula, can be calculated in real time according to the electric current I of booster pump
Go out the service life of reverse osmosis filter core, scheme is simple, easy to implement.
In embodiments of the present invention, according to the electric current I of booster pump and the relationship of the service life of reverse osmosis filter core, Huo Zhegen
According to empirical value, the mapping table of the electric current I of booster pump and the service life of reverse osmosis filter core can also be simulated in advance, wherein
The service life value of the corresponding different reverse osmosis filter cores of different electric current I (or different current ranges) can be included
(or different service life ranges).During by water purifier water, the electric current I of booster pump can be reflected with this at any time
It penetrates relation table to compare, determines the service life of current reverse osmosis filter core.The program further simplifies reverse osmosis filter core
The determining method of service life, reduces calculation amount.
In embodiments of the present invention, it can also step by step be calculated in booster pump working environment according to the electric current I of booster pump
The flow velocity V of water, the water flow Q of unit interval of the source water end (W.E.) of water purifier, water purifier waste water ratio, so as to again according to waste water ratio
Determine the service life of reverse osmosis filter core, concrete scheme can be as shown in embodiment two.
Embodiment two
The embodiment determines the electric current I according to booster pump in embodiment one by another embodiment scheme reverse osmosis
The service life of filter core is described in detail.
Optionally, water purifier can also include：Wastewater valve；As shown in Fig. 2, it is determined according to the electric current I of booster pump reverse osmosis
The service life of filter core can include S21-S22：
S21, the flow velocity V that the water for flowing through booster pump is obtained according to the electric current I of booster pump.
Optionally, the flow velocity V of water of the electric current I of booster pump with flowing through booster pump is linear；According to the electricity of booster pump
The flow velocity V of water that stream I acquisitions flow through booster pump can include：
The flow velocity V of water is calculated according to following second relational expressions：
V=a*I+b, wherein a are the second linear coefficient, and b is first constant.
In embodiments of the present invention, a and b can pass through test of many times and obtain, and can also obtain based on experience value.Also,
Usually when the hardware configuration of water purifier determines, the numerical value of a and b have determined.
S22, according to the flow velocity V of water calculate water purifier source water end (W.E.) unit interval water flow Q.
Optionally, the water flow Q of the unit interval of the source water end (W.E.) of the flow velocity V and water purifier of water is linear；According to water
The flow velocity V water flow Q of unit interval of source water end (W.E.) that calculate water purifier include：
The water flow Q of the unit interval of source water end (W.E.) is calculated according to following third relational expressions：
Q=c*V, wherein c are third linear coefficient.
In embodiments of the present invention, c can pass through test of many times and obtain, and can also obtain based on experience value.Also, C with
The water purification caliber of water purifier is related, and when caliber determines, the numerical value of C also determines that.
In embodiments of the present invention, according to the second relational expression and third relational expression：Q=c*V=c* (a*I+b)=c*
a*I+c*b.In a particular application, it can directly be calculated on the basis of the electric current I for obtaining booster pump according to Q=c*a*I+c*b
The water flow Q of the unit interval of source water end (W.E.) can also obtain the list of the electric current I and source water end (W.E.) of booster pump previously according to the relational expression
The mapping table of the water flow Q of position time, and according to the mapping table, corresponded to wherein different electric current I can be included
Different source water end (W.E.)s unit interval water flow Q.It, can be at any time by the electricity of booster pump during by water purifier water
I is flowed compared with the mapping table, determines the water flow Q of the unit interval of source water end (W.E.).
S23, the water flow Q1 according to unit interval of the water flow Q and wastewater valve detected of unit interval of source water end (W.E.)
Calculate the waste water ratio of water purifier；Wherein, the waste water ratio η of water purifier meets following first relational expressions：η=Q1/Q.
In embodiments of the present invention, since the waste water of water purifier is discharged by wastewater valve, after wastewater valve determines, lead to
Water flow Q1 of the waste water of wastewater valve within the unit interval is crossed to determine substantially.Therefore can be led to according to the wastewater valve of current water purifier
It crosses experiment or empirical value obtains water flow Q1 in its unit interval, and in the unit interval that source water end (W.E.) is obtained by aforementioned schemes
Water flow Q on the basis of, waste water ratio is calculated according to first relational expression η=Q1/Q.
In embodiments of the present invention, since wastewater valve is also comprising the adjustable wastewater valve in aperture, pass through wastewater valve accordingly
Water flow Q1 of the waste water within the unit interval it is i.e. adjustable, therefore waste water ratio is adjusted.In the service life for carrying out reverse osmosis filter core
During calculating, can waste water ratio be calculated according to the wastewater valve after adjusting, so that it is determined that going out the service life of corresponding reverse osmosis filter core.
S24, the service life that reverse osmosis filter core is determined according to the waste water ratio of water purifier.
Optionally, as shown in figure 3, the service life for determining reverse osmosis filter core according to the waste water ratio of water purifier can include S31-
S33：
S31, by the waste water ratio η of the water purifier calculated and preset waste water ratio standard value η0It compares；
S32, when the water purifier calculated waste water ratio η be greater than or equal to waste water ratio standard value η0When, determine reverse osmosis filter
Core has reached the default service life；
S33, when the water purifier calculated waste water ratio η be less than waste water ratio standard value η0When, determine that reverse osmosis filter core does not reach
To the default service life.
In embodiments of the present invention, a waste water ratio standard value η can be pre-set0, as the waste water that calculates of measurement
Than the standard of η size.When the waste water ratio η calculated is greater than or equal to waste water ratio standard value η0When, illustrate current reverse osmosis filter
Usage time is long for core, can be stopped and user is reminded to replace reverse osmosis filter core；When the waste water of the water purifier calculated
It is less than waste water ratio standard value η than η0When, illustrate that current reverse osmosis filter core can also carry out water filtration, therefore can keep normal work
Make.It should be noted that step S32 and step S33 are the different judging results under different situations, without point of sequence priority.
Embodiment three
The embodiment is for waste water ratio standard value η0Determining method give a kind of specific embodiment.
Optionally, waste water ratio standard value η0Meet the 4th following relational expressions：
η0=f*T+g；Wherein, T is the inflow temperature of the source water end (W.E.) of water purifier, and f is the 4th linear coefficient, and g is normal for second
Number.
In embodiments of the present invention, as shown in figure 4, identical reverse osmosis filter core is under different temperature conditions, water yield
It is linear with temperature T, that is to say, that temperature is higher, and water yield Q2 is bigger, then wastewater flow rate Q1 is lower, therefore temperature is got over
Height, η is lower, and temperature is lower, and η is higher.
In embodiments of the present invention, according to above-mentioned principle, it may be determined that go out waste water ratio standard value η0With the source water of water purifier
The inversely prroportional relationship formula of the inflow temperature T at end, i.e., the 4th above-mentioned relational expression.
In embodiments of the present invention, f and g can pass through test of many times and obtain, and can also obtain based on experience value.
In embodiments of the present invention, it can be obtained under current application environment under normal conditions according to the 4th above-mentioned relational expression
The minimum water temperature of source water end (W.E.), so as to calculate the maximum waste water ratio under the application environment, so as to using the maximum waste water ratio as useless
Water is than standard value η0.The average water of source water end (W.E.) under normal conditions can also be obtained under current application environment in other embodiments
Temperature so as to calculate the average waste water ratio under the application environment, and will be greater than a numerical value of the average waste water ratio as waste water
Than standard value η0。
Example IV
The embodiment is for waste water ratio standard value η0Determining method give another specific embodiment.
Optionally, as shown in figure 5, waste water ratio standard value η0Meet the 5th following relational expressions：
η0=k* η1；
Wherein, k be the 5th linear coefficient, k>1；η1For minimum waste water ratio, η1Meet the 6th following relational expressions：η1=h*T
+i；H is the 6th linear coefficient, and i is three constant.
In embodiments of the present invention, based on embodiment three it is found that the temperature of flow is higher, η is lower, and temperature is lower, and η is got over
It is high.Based on this principle, minimum waste water ratio η can be equally obtained1It is above-mentioned with the inversely prroportional relationship formula of the inflow temperature T of source water end (W.E.)
The 6th relational expression.In embodiments of the present invention, minimum waste water ratio η1Refer to that reverse osmosis filter core is useless when absolutely effectively
Water ratio, for example, waste water ratio during and for the first time use guaranteed in reverse osmosis filter core product quality.
In embodiments of the present invention, h and i can pass through test of many times and obtain, and can also obtain based on experience value.
It in embodiments of the present invention, can be further true according to the linear relationship of the 5th relational expression based on the minimum waste water ratio
Make waste water ratio standard value η0.5th linear coefficient k therein can be according to different application scenarios self-definings, for its tool
Body numerical value is not limited.
Embodiment five
The embodiment is on the basis of example IV to minimum waste water ratio η1It is corrected.
Optionally, this method can also include S41-S43：：
S41, in advance to minimum waste water ratio η1It is modified, obtains revised minimum waste water ratio η2。
Optionally, in advance to minimum waste water ratio η1It is modified, obtains revised minimum waste water ratio η2It can include：
First waste water ratio η is obtained according to the first relational expressiona；
Second waste water ratio η is obtained according to the 6th relational expressionb；
According to the first waste water ratio ηaAnd the second waste water ratio ηbMathematic interpolation waste water ratio correction amount η；Wherein, Δ η=
ηa-ηb；
Waste water ratio correction amount η is added in the 6th relational expression and calculates revised minimum waste water ratio η2；Wherein, η2=
h*T+i+Δη。
In embodiments of the present invention, when new engine carries out water processed for the first time, current water temperature T can be sampled, by first
Relational expression measures the first current waste water ratio ηa, and by the 6th relational expression computational theory value, i.e. the second waste water ratio ηb, then Δ η=
ηa-ηb, then modified curve equation is：η2=h*T+i+ Δs η；It is specific as shown in Figure 6.
Optionally, this method can also include：
Before using water purifier water, test of many times is carried out to water purifier to obtain multiple waste water ratio correction amounts of water purifier
Δη；
The average value of multiple waste water ratio correction amount η is asked for as the revised minimum waste water ratio η of calculating2Final waste water
Correction amount.
In embodiments of the present invention, when calculating waste water ratio correction amount η, according to n times before using new engine water
It tests the method averaged and calculates waste water ratio correction amount η, to improve the calculating accuracy rate of waste water ratio correction amount η, so as to
Further reduce waste water ratio standard value η0Calculating error, improve the judgment accuracy of reverse osmosis filter element life.
In embodiments of the present invention, N can be according to different application scenarios self-definings, such as N≤5.
S42, according to revised minimum waste water ratio η2Waste water ratio standard value η is calculated with the 5th relational expression0。
In embodiments of the present invention, according to said program to minimum waste water ratio η2It, can be according to repairing after being modified
Minimum waste water ratio η after just2And the 5th relational expression calculate waste water ratio standard value η0, so as to reduce waste water ratio standard value η0
Calculating error, improve the judgment accuracy of reverse osmosis filter element life.
The advantageous effect of the embodiment of the present invention includes：
1st, the water purifier of the embodiment of the present invention includes：Inlet valve, booster pump and reverse osmosis filter core, booster pump are located at inlet valve
Between reverse osmosis filter core, this method includes：During water processed, the electric current I of booster pump is detected；According to the electric current I of booster pump
Determine the service life of reverse osmosis filter core；Wherein, the service life inversely proportional pass of the electric current I of booster pump and the reverse osmosis filter core of reverse osmosis membrane
System.By the embodiment scheme, the calculating accuracy rate of reverse osmosis filter element life is improved, and is not saved by water quality impact
Cost.
2nd, the water purifier of the embodiment of the present invention further includes：Wastewater valve；Reverse osmosis filter core is determined according to the electric current I of booster pump
Service life includes：The flow velocity V of the water of booster pump is flowed through according to the electric current I of booster pump acquisitions；Water purifier is calculated according to the flow velocity V of water
The water flow Q of the unit interval of source water end (W.E.)；According to the water flow Q of the unit interval of source water end (W.E.) and the unit of wastewater valve detected
The water flow Q1 of time calculates the waste water ratio of water purifier；Wherein, the waste water ratio η of water purifier meets following first relational expressions：η=
Q1/Q；The service life of reverse osmosis filter core is determined according to the waste water ratio of water purifier.It, can be according to booster pump by the embodiment scheme
Electric current I, booster pump water flow velocity V and source water end (W.E.) unit interval water flow Q between linear relationship obtain waste water ratio,
So as to obtain the service life of reverse osmosis membrane according to waste water ratio, which is not influenced by water quality, improves computational accuracy.
3rd, the flow velocity V of water of the electric current I of the booster pump of the embodiment of the present invention with flowing through booster pump is linear；According to increasing
The flow velocity V of water that the electric current I acquisitions of press pump flow through booster pump includes：The flow velocity V of water is calculated according to following second relational expressions：V=
A*I+b, wherein a are the second linear coefficient, and b is first constant.The water of the unit interval of the flow velocity V of water and the source water end (W.E.) of water purifier
Flow Q is linear；The water flow Q that the unit interval of the source water end (W.E.) of water purifier is calculated according to the flow velocity V of water includes：Under
State the water flow Q that third relational expression calculates the unit interval of source water end (W.E.)：Q=c*V, wherein c are third linear coefficient.The embodiment
Solution principle is simple, is readily appreciated that, and easy to implement, and R＆D costs are low.
4th, the waste water ratio standard value η of the embodiment of the present invention0Meet the 4th following relational expressions：η0=f*T+g；Wherein, T is
The inflow temperature of the source water end (W.E.) of water purifier, f are the 4th linear coefficient, and g is second constant.The embodiment scheme considers temperature pair
The influence of waste water ratio improves calculating accuracy rate.
5th, the waste water ratio standard value η of the embodiment of the present invention0Meet the 5th following relational expressions：η0=k* η1；Wherein, k
Five linear coefficients, k>1；η1For minimum waste water ratio, η1Meet the 6th following relational expressions：η1=h*T+i；H is the 6th linear system
Number, i is three constant.The embodiment scheme determines waste water ratio standard value η according to minimum waste water ratio0, scheme is simple and is easy to root
Factually border is it needs to be determined that go out rational waste water ratio standard value η0。
6th, the method for the embodiment of the present invention further includes：In advance to minimum waste water ratio η1It is modified, acquisition is revised most
Low waste water ratio η2；According to revised minimum waste water ratio η2Waste water ratio standard value η is calculated with the 5th relational expression0.The embodiment scheme
According to revised minimum waste water ratio η2Calculate waste water ratio standard value η0, reduce waste water ratio standard value η0Calculating error, so as to
Improve the judgment accuracy of reverse osmosis filter element life.
7th, the method for the embodiment of the present invention further includes：Using before water purifier water, water purifier is carried out test of many times with
Obtain multiple waste water ratio correction amount η of water purifier；After the average value conduct calculating amendment for asking for multiple waste water ratio correction amount η
Minimum waste water ratio η2Final waste water correction amount.The embodiment scheme calculates waste water according to the method that many experiments are averaged
Than correction amount η, the calculating accuracy rate of waste water ratio correction amount η is improved, so as to further reduced waste water ratio standard value η0
Calculating error, improve the judgment accuracy of reverse osmosis filter element life.
Although disclosed herein embodiment as above, the content only for ease of understanding the present invention and use
Embodiment is not limited to the present invention.Technical staff in any fields of the present invention is taken off not departing from the present invention
Under the premise of the spirit and scope of dew, any modification and variation, but the present invention can be carried out in the form and details of implementation
Scope of patent protection, still should be subject to the scope of the claims as defined in the appended claims.
Claims (10)
1. a kind of life detecting method of the reverse osmosis filter core of water purifier, the water purifier include：Inlet valve, booster pump and reverse osmosis
Filter core, the booster pump is between the inlet valve and the reverse osmosis filter core, which is characterized in that the method includes：
During water processed, the electric current I of the booster pump is detected；
The service life of the reverse osmosis filter core is determined according to the electric current I of the booster pump；
Wherein, the service life inversely proportional relationship of the electric current I of the booster pump and the reverse osmosis filter core.
2. the life detecting method of the reverse osmosis filter core of water purifier according to claim 1, which is characterized in that the water purifier
It further includes：Wastewater valve；The electric current I according to the booster pump determines that the service life of the reverse osmosis filter core includes：
The flow velocity V of the water of the booster pump is flowed through according to the electric current I of booster pump acquisitions；
The water flow Q of the unit interval of the source water end (W.E.) of the water purifier is calculated according to the flow velocity V of the water；
According to the water flow Q of the unit interval of the source water end (W.E.) and the water flow Q1 of the unit interval of the wastewater valve detected
Calculate the waste water ratio of the water purifier；Wherein, the waste water ratio η of the water purifier meets following first relational expressions：η=Q1/Q；
The service life of the reverse osmosis filter core is determined according to the waste water ratio of the water purifier.
3. the life detecting method of the reverse osmosis filter core of water purifier according to claim 2, which is characterized in that the booster pump
Water of the electric current I with flowing through the booster pump flow velocity V it is linear；The electric current I according to the booster pump is flowed
The flow velocity V of water through the booster pump includes：
The flow velocity V of the water is calculated according to following second relational expressions：
V=a*I+b, wherein a are the second linear coefficient, and b is first constant.
4. the life detecting method of the reverse osmosis filter core of water purifier according to claim 3, which is characterized in that the stream of the water
Fast V and the water flow Q of the unit interval of the source water end (W.E.) of the water purifier are linear；It is described to be counted according to the flow velocity V of the water
The water flow Q for calculating the unit interval of the source water end (W.E.) of the water purifier includes：
The water flow Q of the unit interval of the source water end (W.E.) is calculated according to following third relational expressions：
Q=c*V, wherein c are third linear coefficient.
5. the life detecting method of the reverse osmosis filter core of water purifier according to any one of claims 1-4, which is characterized in that
The waste water ratio according to the water purifier determines that the service life of the reverse osmosis filter core includes：
By the waste water ratio η of the water purifier calculated and preset waste water ratio standard value η0It compares；
When the waste water ratio η of the water purifier calculated is greater than or equal to the waste water ratio standard value η0When, it determines described reverse osmosis
Filter core has reached the default service life；
When the waste water ratio η of the water purifier calculated is less than the waste water ratio standard value η0When, determine the reverse osmosis filter core not
Reach the default service life.
6. the life detecting method of the reverse osmosis filter core of water purifier according to claim 5, which is characterized in that the waste water ratio
Standard value η0Meet the 4th following relational expressions：
η0=f*T+g；Wherein, T is the inflow temperature of the source water end (W.E.) of the water purifier, and f is the 4th linear coefficient, and g is normal for second
Number.
7. the life detecting method of the reverse osmosis filter core of water purifier according to claim 5, which is characterized in that the waste water ratio
Standard value η0Meet the 5th following relational expressions：
η0=k* η1；
Wherein, k be the 5th linear coefficient, k>1；η1For minimum waste water ratio, η1Meet the 6th following relational expressions：η1=h*T+i；h
For the 6th linear coefficient, i is three constant.
8. the life detecting method of the reverse osmosis filter core of water purifier according to claim 7, which is characterized in that the method is also
Including：
In advance to the minimum waste water ratio η1It is modified, obtains revised minimum waste water ratio η2；
According to revised minimum waste water ratio η2The waste water ratio standard value η is calculated with the 5th relational expression0。
9. the life detecting method of the reverse osmosis filter core of water purifier according to claim 8, which is characterized in that described right in advance
The minimum waste water ratio η1It is modified, obtains revised minimum waste water ratio η2Including：
First waste water ratio η is obtained according to first relational expressiona；
Second waste water ratio η is obtained according to the 6th relational expressionb；
According to the first waste water ratio ηaAnd the second waste water ratio ηbMathematic interpolation waste water ratio correction amount η；Wherein, Δ η
=ηa-ηb；
The waste water ratio correction amount η is added in the 6th relational expression and calculates the revised minimum waste water ratio η2；Its
In, η2=h*T+i+ Δs η.
10. the life detecting method of the reverse osmosis filter core of water purifier according to claim 9, which is characterized in that the method
It further includes：
Before using the water purifier water, test of many times is carried out to the water purifier to obtain multiple waste water of the water purifier
Than correction amount η；
The average value of the multiple waste water ratio correction amount η is asked for as the calculating revised minimum waste water ratio η2It is final
Waste water correction amount.
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