CN114381760A - Household appliance and water electrolysis control method thereof - Google Patents
Household appliance and water electrolysis control method thereof Download PDFInfo
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- CN114381760A CN114381760A CN202011132595.8A CN202011132595A CN114381760A CN 114381760 A CN114381760 A CN 114381760A CN 202011132595 A CN202011132595 A CN 202011132595A CN 114381760 A CN114381760 A CN 114381760A
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Abstract
The application discloses a household appliance and a water electrolysis control method thereof, wherein the household appliance comprises an electrolysis circuit; the electrolytic circuit includes: the device comprises a power supply, an electrolytic sheet connected with the power supply and a sampling resistor connected in series between the power supplies; the method comprises the following steps: after the electrolytic circuit is started, measuring the actual working current of the electrolytic circuit through a sampling resistor; comparing the actual working current with the theoretical working current calculated under the condition of the same sampling resistance value when the electrolytic circuit works; and judging whether the conductivity of the water quality electrolyzed at present is normal according to the comparison result, and adopting a corresponding conductivity adjustment scheme according to the judgment result. By the scheme of the embodiment, the aim of generating enough OH-ions and ClO-ions for different water qualities is fulfilled, and the aim of disinfection is fulfilled.
Description
Technical Field
The present disclosure relates to a household appliance control technology, and more particularly, to a household appliance and a water electrolysis control method thereof.
Background
The electrolyzed water is water generated after tap water is electrolyzed, the acid water generated after electrolysis has the sterilization effect, and oxygen generated at the positive electrode can be combined with chlorine to generate hypochlorite or hypochlorite ion water solution according to the chemical reaction of the electrolyzed water; the function of removing the pesticide residues on the fruits and vegetables is achieved through hypochlorite ion aqueous solution or hypohypochlorite ion aqueous solution.
Currently, there are the following problems in disinfecting water electrolysis:
1. when the water quality is close to distilled water, the conductivity is infinitely small, OH-ions and ClO-ions cannot be generated through electrolysis, and the fruits and vegetables cannot be disinfected.
2. When the water quality is close to saturated salt water, the conductivity is infinite, the load power of the system can be instantly increased at the moment, the equipment is in a saturated power running state, electronic components can be damaged when the equipment works in the saturated power state for a long time, and the service life of the equipment is further shortened;
3. after the equipment works for a long time, calcium and magnesium ions attached to the electrolytic sheet can be formed into scale, and the electrochemical reaction of the electrolytic sheet with the resistance value of the scale is influenced, so that the disinfection effect of people is influenced.
Disclosure of Invention
The embodiment of the application provides a household appliance and a water electrolysis control method thereof, which can enable different water qualities to generate enough OH-ions and ClO-ions so as to achieve the aim of disinfection.
The embodiment of the application provides a water electrolysis control method of a household appliance, wherein the household appliance can comprise an electrolysis circuit; the electrolytic circuit may include: the device comprises a power supply, an electrolytic sheet connected with the power supply and a sampling resistor connected in series between the power supplies; the method may include:
after the electrolytic circuit is started, measuring the actual working current of the electrolytic circuit through the sampling resistor;
comparing the actual working current with a theoretical working current which is calculated under the condition of the same sampling resistance value and is used when the electrolytic circuit works;
and judging whether the conductivity of the water quality electrolyzed at present is normal according to the comparison result, and adopting a corresponding conductivity adjustment scheme according to the judgment result.
In an exemplary embodiment of the present application, the judging whether the conductivity of the currently electrolyzed water is normal according to the comparison result may include:
when the actual working current is equal to the theoretical working current, judging that the conductivity of the current water quality is normal;
when the actual working current is smaller than the theoretical working current, judging that the conductivity of the current water quality is smaller;
and when the actual working current is larger than the theoretical working current, judging that the current water quality has larger conductivity.
In an exemplary embodiment of the present application, the method may further include: when the actual working current of the electrolytic circuit is measured through the sampling resistor, the resistance value of the sampling resistor connected to the electrolytic circuit is changed, and the actual working current of the electrolytic circuit is measured when the sampling resistors with different resistance values are connected; comparing the actual working current measured for many times with the theoretical working current under the condition of the same sampling resistance value respectively; and judging whether the conductivity of the currently electrolyzed water is normal or not according to the multiple comparison results.
In an exemplary embodiment of the present application, a plurality of sampling resistors are connected in parallel and then connected in series between the positive electrode and the negative electrode of the power supply;
the changing of the resistance of the sampling resistor connected to the electrolysis circuit may include: changing the number of sampling resistors connected into the electrolytic circuit.
In an exemplary embodiment of the present application, the method may further include:
when the actual working current is judged to be smaller than the theoretical working current through increasing and/or reducing the number of the sampling resistors connected in parallel for multiple times, determining that the current water quality is distilled water or is close to the distilled water; and/or the presence of a gas in the gas,
when the number of the sampling resistors connected in parallel is sequentially increased and the actual working current is judged to be larger than the theoretical working current, determining that the current water quality is saturated saline water or close to the saturated saline water; and when the number of the sampling resistors connected in parallel reaches the maximum, if the actual working current is judged to be larger than the theoretical working current, the power supply is determined to be in the limit state.
In an exemplary embodiment of the present application, the taking of the corresponding conductivity adjustment scheme according to the determination result may include:
when the conductivity of the current water quality is judged to be smaller, or the current water quality is determined to be distilled water or close to the distilled water, reminding of adding a material for improving the conductivity into the water; the material comprises a salt;
when the conductivity of the current water quality is judged to be larger, or the current water quality is determined to be saturated saline water or close to the saturated saline water, reducing the working frequency of the electrolytic circuit;
when the power supply is determined to be in the limit state, controlling the working time of the electrolytic circuit within each second to be P _ s/P; wherein P _ s is the rated voltage of the power supply, and P is the limit voltage of the power supply.
In an exemplary embodiment of the present application, the home appliance may further include: a total dissolved solids TDS detection circuit;
the method may further comprise: detecting a TDS value of the detected water through the TDS detection circuit, and judging whether scale is generated on the electrolytic sheet according to the detected TDS value and the actual working current of the electrolytic circuit; and entering a descaling process after the occurrence of scale on the electrolytic sheet is judged.
In an exemplary embodiment of the present application, the determining whether or not scale is generated on the electrolytic sheet based on the detected TDS value and the actual operating current of the electrolytic circuit may include:
under the condition that the resistance value of the sampling resistor is not changed, detecting the change condition of the ratio of the change rate of the TDS value to the change rate of the actual working current;
and judging that scale is generated on the electrolytic sheet when the ratio is gradually increased.
In an exemplary embodiment of the present application, the descaling procedure may include:
setting the resistance value of the sampling resistor as a preset resistance value, acquiring a theoretical value of a TDS value corresponding to the preset resistance value under the current water quality, and detecting an actual value of the TDS value;
when the actual value of the TDS value is smaller than the product of the theoretical value of the TDS value and the first proportion, reducing the resistance value of the sampling resistor; the first ratio satisfies: 0.5-0.8;
when the actual value of the TDS value is smaller than the theoretical value of the TDS value, the anode electrolytic sheet and the cathode electrolytic sheet of the electrolytic sheet are reversed, so that the scale is separated from the surface of the electrolytic sheet under the action of a reverse electric field.
An embodiment of the present application further provides a household appliance, which may include: a processor, a computer readable storage medium, and an electrolysis circuit; the electrolytic circuit may include: the device comprises a power supply, an electrolytic sheet connected with the power supply and a sampling resistor connected in series between the power supplies; the computer readable storage medium stores instructions which, when executed by the processor, implement the water electrolysis control method of the household appliance.
In an exemplary embodiment of the present application, the household appliance may further include: a total dissolved solids TDS detection circuit; the total dissolved solids TDS detection circuit is coupled to the processor.
In contrast to the related art, the household appliance of the embodiment of the present application may include an electrolytic circuit; the electrolytic circuit may include: the device comprises a power supply, an electrolytic sheet connected with the power supply and a sampling resistor connected in series between the power supplies; the method may include: after the electrolytic circuit is started, measuring the actual working current of the electrolytic circuit through the sampling resistor; comparing the actual working current with a theoretical working current which is calculated under the condition of the same sampling resistance value and is used when the electrolytic circuit works; and judging whether the conductivity of the water quality electrolyzed at present is normal according to the comparison result, and adopting a corresponding conductivity adjustment scheme according to the judgment result. By the scheme of the embodiment, the aim of generating enough OH-ions and ClO-ions for different water qualities is fulfilled, and the aim of disinfection is fulfilled.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. Other advantages of the present application may be realized and attained by the instrumentalities and combinations particularly pointed out in the specification and the drawings.
Drawings
The accompanying drawings are included to provide an understanding of the present disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the examples serve to explain the principles of the disclosure and not to limit the disclosure.
Fig. 1 is a flow chart of a water electrolysis control method of a household appliance according to an embodiment of the present application;
FIG. 2 is a schematic view of an electrolytic sheet according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a portion of an electrolytic circuit according to an embodiment of the present application;
FIG. 4 is a schematic diagram of the electrolysis control flow when the water quality is close to the load condition of saturated brine in the embodiment of the present application;
FIG. 5 is a schematic diagram of a TDS detection circuit according to an embodiment of the present application;
FIG. 6 is a table illustrating the corresponding parameters between conductivity and TDS according to an embodiment of the present disclosure;
FIG. 7 is a schematic illustration of a descaling flow according to an embodiment of the present application;
fig. 8 is a block diagram of a household appliance according to an embodiment of the present application.
Detailed Description
The present application describes embodiments, but the description is illustrative rather than limiting and it will be apparent to those of ordinary skill in the art that many more embodiments and implementations are possible within the scope of the embodiments described herein. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are possible. Any feature or element of any embodiment may be used in combination with or instead of any other feature or element in any other embodiment, unless expressly limited otherwise.
The present application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The embodiments, features and elements disclosed in this application may also be combined with any conventional features or elements to form a unique inventive concept as defined by the claims. Any feature or element of any embodiment may also be combined with features or elements from other inventive aspects to form yet another unique inventive aspect, as defined by the claims. Thus, it should be understood that any of the features shown and/or discussed in this application may be implemented alone or in any suitable combination. Accordingly, the embodiments are not limited except as by the appended claims and their equivalents. Furthermore, various modifications and changes may be made within the scope of the appended claims.
Further, in describing representative embodiments, the specification may have presented the method and/or process as a particular sequence of steps. However, to the extent that the method or process does not rely on the particular order of steps set forth herein, the method or process should not be limited to the particular sequence of steps described. Other orders of steps are possible as will be understood by those of ordinary skill in the art. Therefore, the particular order of the steps set forth in the specification should not be construed as limitations on the claims. Further, the claims directed to the method and/or process should not be limited to the performance of their steps in the order written, and one skilled in the art can readily appreciate that the sequences may be varied and still remain within the spirit and scope of the embodiments of the present application.
The embodiment of the application provides a water electrolysis control method of a household appliance, wherein the household appliance can comprise an electrolysis circuit; the electrolytic circuit may include: the device comprises a power supply, an electrolytic sheet connected with the power supply and a sampling resistor connected in series between the power supplies; as shown in fig. 1, the method may comprise steps S101-S103:
s101, after the electrolytic circuit is started, measuring the actual working current of the electrolytic circuit through the sampling resistor;
s102, comparing the actual working current with a theoretical working current which is calculated under the condition of the same sampling resistance value and is used when the electrolytic circuit works;
s103, judging whether the conductivity of the water quality electrolyzed at present is normal according to the comparison result, and adopting a corresponding conductivity adjustment scheme according to the judgment result.
In an exemplary embodiment of the present application, a schematic view of an electrolytic sheet for electrolysis is shown in fig. 2, and the electrolytic sheet may include N sets of an anode electrolytic sheet and a cathode electrolytic sheet; n is a positive integer larger than 1, and the anode electrolytic sheet and the cathode electrolytic sheet are arranged at intervals.
In an exemplary embodiment of the present application, the electrolysis principle is as follows:
chlorine-containing water is electrolyzed to produce ClO-and a small amount of higher chlorate, and the anode of the electrolytic cell undergoes the following reactions: 2Cl-2e → Cl2, Cl2+ H2O → HClO + H2+ Cl- + OH-; OH-ions diffuse into the liquid layer around the anode and react with hypochlorous acid to generate ClO-.
In the exemplary embodiments of the present application, the electrolyzed water is sterilized mainly by means of the redox property of OH-ions and ClO-ions. In actual working conditions, water quality used by users is different, and the concentration of ions generated by ionization must be ensured to ensure the disinfection effect.
In the exemplary embodiment of the present application, ions are generated electrolytically, and the ions move in the electric field to form an electric current, so the magnitude of the electric current reflects the concentration of the ions; thus, current is the primary factor affecting electrochemical degradation of organic matter, and current density affects the charge entering the cell over a given period of time, thereby affecting contaminant removal.
In the exemplary embodiments of the present application, each electrolysis apparatus has a rated operating power, a rated voltage, a rated current; i _ s can be used to represent the rated current, P _ s can be used to represent the rated power, and U _ s can be used to represent the rated voltage.
In the exemplary embodiment of the present application, based on the above principle, in the case of water quality determination and sampling resistance value determination, if the conductivity is normal and in a rational state, the detected actual working current is inevitably equal to the calculated theoretical working current, whereas if the conductivity is abnormal, the detected actual working current is inevitably not equal to the calculated theoretical working current.
In an exemplary embodiment of the present application, the judging whether the conductivity of the currently electrolyzed water is normal according to the comparison result may include:
when the actual working current is equal to the theoretical working current, judging that the conductivity of the current water quality is normal;
when the actual working current is smaller than the theoretical working current, judging that the conductivity of the current water quality is smaller;
and when the actual working current is larger than the theoretical working current, judging that the current water quality has larger conductivity.
In an exemplary embodiment of the present application, the method may further include: when the actual working current of the electrolytic circuit is measured through the sampling resistor, the resistance value of the sampling resistor connected to the electrolytic circuit is changed, and the actual working current of the electrolytic circuit is measured when the sampling resistors with different resistance values are connected; comparing the actual working current measured for many times with the theoretical working current under the condition of the same sampling resistance value respectively; and judging whether the conductivity of the currently electrolyzed water is normal or not according to the multiple comparison results.
In the exemplary embodiment of the application, under the condition that the water quality is kept unchanged, if the resistance value of the collecting resistor is unchanged, the theoretical working current is unchanged, otherwise, if the resistance value of the sampling resistor is changed, the corresponding theoretical working current is also changed, and in order to improve the conductivity judgment of the current water quality, after the resistance value of the sampling resistor is converted once or for multiple times, the corresponding actual working current and the theoretical working current are respectively compared, so that the comprehensive comparison results are judged for multiple times.
In an exemplary embodiment of the present application, a plurality of sampling resistors are connected in parallel and then connected in series between the positive electrode and the negative electrode of the power supply;
the changing of the resistance of the sampling resistor connected to the electrolysis circuit may include: changing the number of sampling resistors connected into the electrolytic circuit.
In an exemplary embodiment of the present application, as shown in fig. 3, the electrolysis circuit may further include a switch control unit U1 (e.g., may be a DC-DC constant current switch chip, such as XL3005), a comparison op-amp comparator U2 (e.g., may be LM358), and a plurality of controllable feedback resistors (i.e., sampling resistors). The sampling resistors can be controlled by a plurality of controllable switches (such as transistors Q101-Q104) to determine the output current.
In an exemplary embodiment of the present application, the positive pole VOUT + of the power supply is connected to the anode plate and the negative pole VOUT-of the power supply is connected to the cathode plate; and the output current I of the power supply is equal to U/R, U is the power supply voltage, and R is the parallel resistance of all the sampling resistors.
In the exemplary embodiment of the present application, when Q101 is turned on, R ═ RCS1, the theoretical operating current value of the output is I1, at which the water quality corresponds to an electrical conductivity of σ 1;
when Q101 and Q102 are switched on, R is Rcs1 Rcs2/(Rcs1+ Rcs2), the output theoretical working current value is I2, and the corresponding conductivity of the water quality is sigma 2;
when Q101, Q102 and Q103 are opened, R ═ Rcs1 Rcs2 Rcs3/(Rcs1+ Rcs2+ Rcs3), the output theoretical working current value is I3, and the conductivity corresponding to the water quality is sigma 3;
when Q101, Q102, Q103 and Q104 are turned on,
and R is Rcs1 Rcs2 Rcs3 Rcs4/(Rcs1+ Rcs2+ Rcs3+ Rcs4), the output theoretical working current value is I4, and the corresponding conductivity of the water quality is sigma 4.
In an exemplary embodiment of the present application, the sampling resistance may also continue to expand, and so on, until the output current reaches a limit current of DC-DC (direct current-direct current).
In an exemplary embodiment of the present application, after the sampling resistor resistance value R changes, whether the conductivity of the current water quality is normal or not may be determined according to the corresponding theoretical operating current and the conductivity, respectively.
In an exemplary embodiment of the present application, the method may further include:
when the actual working current is judged to be smaller than the theoretical working current through increasing and/or reducing the number of the sampling resistors connected in parallel for multiple times, determining that the current water quality is distilled water or is close to the distilled water; and/or the presence of a gas in the gas,
when the number of the sampling resistors connected in parallel is sequentially increased and the actual working current is judged to be larger than the theoretical working current, determining that the current water quality is saturated saline water or close to the saturated saline water; and when the number of the sampling resistors connected in parallel reaches the maximum, if the actual working current is judged to be larger than the theoretical working current, the power supply is determined to be in the limit state.
In an exemplary embodiment of the present application, the taking of the corresponding conductivity adjustment scheme according to the determination result may include:
when the conductivity of the current water quality is judged to be smaller, or the current water quality is determined to be distilled water or close to the distilled water, reminding of adding a material for improving the conductivity into the water; the material comprises a salt;
when the conductivity of the current water quality is judged to be larger, or the current water quality is determined to be saturated saline water or close to the saturated saline water, reducing the working frequency of the electrolytic circuit;
when the power supply is determined to be in the limit state, controlling the working time of the electrolytic circuit within each second to be P _ s/P; wherein P _ s is the rated voltage of the power supply, and P is the limit voltage of the power supply.
In the exemplary embodiments of the present application, the addition of salt may improve the conductivity of the current solution, since salt Nacl is readily soluble and is a good conductor after dissolution. The operating frequency of the electrolytic circuit is reduced (for example, the electrolytic circuit is operated intermittently, and electrolysis is performed intermittently), the current density on the electrolytic sheet can be reduced, the conductivity of the current solution can be correspondingly reduced, the continuous working time of the power supply can be reduced, the temperature of the power supply is reduced, and the service life of the power supply is prolonged.
In the exemplary embodiments of the present application, detailed examples of the embodiments of the present application are given below for different water qualities, respectively.
First, the water quality is close to the load condition of distilled water
The electrolysis control flow may include:
1. after the electrolytic circuit is started, the triodes Q101 and Q102 are opened, and the theoretical working current is I2;
2. measuring the real-time working current I of the electrolytic sheet through sampling resistors Rcs1 and Rcs 2;
3. if I is less than I2, the conductivity of the water is less than sigma 2; closing Rcs2, wherein the theoretical current of the electrolytic sheet is I1; the purpose of turning off R2 here is to increase the overall sampling resistance value, normally the current should be reduced, I1< I2;
4. measuring the real-time working current I of the electrolytic sheet through a sampling resistor Rcs 1;
5. if I is less than I1, the conductivity of the water is less than sigma 1, the display screen can prompt the user to add salt (NaCl);
6. after the user adds salt, the method can return to the step 1, and at the moment, the triodes Q101 and Q102 are turned on, and the theoretical value of current is I2;
7. measuring the real-time working current I of the electrolytic sheet through sampling resistors Rcs1 and Rcs 2;
8. if I is less than I2, the user can be prompted to continue adding salt, and if I is greater than or equal to I2, the prompting lamp is turned off.
In the exemplary embodiment of the application, the conductivity of the water quality is estimated through current judgment, and if the conductivity is too small, the electrolysis effect of the water quality with smaller conductivity is improved by prompting a user to add salt, so that the effective disinfection of fruits and vegetables is ensured, and the purification effect is enhanced.
Secondly, the water quality is close to the load working condition of saturated brine
As shown in fig. 4, the electrolysis control flow may include:
1. after the electrolytic circuit is started, the triodes Q101 and Q102 are opened, and the theoretical working current is I2;
2. measuring the real-time working current I of the electrolytic sheet through sampling resistors Rcs1 and Rcs 2;
3. if I is larger than I2, switching on Rcs3, and then the theoretical working current of the electrolytic sheet is I3;
4. measuring the real-time working current I of the electrolytic sheet through sampling resistors Rcs1, Rcs2 and Rcs 3;
5. if I is larger than I3, continuing to turn on Rcs4, wherein the theoretical working current at the moment is I4;
6. measuring the real-time working current I of the electrolytic sheet through sampling resistors Rcs1, Rcs2, Rcs3 and Rcs 4;
7. if I is larger than I4, the power supply is in the limit state at the moment and cannot continuously work for a long time, otherwise, the temperature rise of the power supply exceeds the standard, and the service life of a power supply system is lost for a long time;
8. at the moment, the power P ═ Us ═ I is calculated, and the on-time T ═ P _ s/P in 1 second of the periodic work of the electrolytic sheet can be controlled; p _ s is rated power, and P is limit power;
9. and keeping the opening frequency of the electrolytic sheet until the electrolysis process is finished.
In the exemplary embodiment of the application, the more sampling resistors are added in parallel, the resistance value of the whole sampling resistor is gradually reduced, the current is increased, I3 is greater than I2, and if the newly detected I is greater than I3, the fact that I is greater and the conductivity of water is greater is proved; and continuously connecting the sampling resistors in parallel, reducing the resistance value of the whole sampling resistor, comparing the current value again, and if I is detected to be larger than all theoretical working currents, keeping the normal-channel power supply in a limit working state.
In the exemplary embodiment of the application, under the condition of the water quality load, the power supply is prevented from continuously working in the limit state by enabling the electrolysis circuit to periodically work (such as intermittent work), so that the service life of the power supply is prolonged.
In an exemplary embodiment of the present application, the home appliance may further include: a total dissolved solids TDS detection circuit;
the method may further comprise: detecting a TDS value of the detected water through the TDS detection circuit, and judging whether scale is generated on the electrolytic sheet according to the detected TDS value and the actual working current of the electrolytic circuit; and entering a descaling process after the occurrence of scale on the electrolytic sheet is judged.
In an exemplary embodiment of the present application, a circuit implementation of a TDS detection circuit is shown in fig. 5.
In the exemplary embodiment of the present application, when scale appears on the electrolytic sheet, the scale covers the electrolytic sheet, resulting in a decrease in the electric field strength between the anode and the cathode of the electrolytic sheet, thereby resulting in a decrease in current density, and a decrease in electrochemically generated ClO-, OH-, ions, thereby affecting the sterilization effect of the device.
In the exemplary embodiment of the present application, as shown in fig. 5, in the circuit system, the TDS value of the water quality is detected in real time by the TDS detection circuit, so that the scaling condition of the electrolytic sheet can be indirectly judged.
In the exemplary embodiments of the present application, conductivity is directed to be in a direct relationship with TDS, with the TDS value increasing as conductivity increases; as shown in the experimental data in fig. 6, is a table of corresponding parameters between conductivity and TDS.
In the exemplary embodiment of the application, under the condition that the electrolytic sheet is normal, through software control, along with the increase of the electrolytic current, the ion amount in the water quality is also gradually increased, and the TDS value at the moment is also correspondingly increased; if the electrolytic sheet is scaled, the software control is adopted, along with the increase of the electrolytic current, the electric field between the anode and the cathode of the electrolytic sheet is weakened due to the physical obstruction of the scale, the ion quantity in the water is not increased in proportion, and the corresponding TDS value is not increased at the moment. Based on the principle, the scaling condition of the electrolytic sheet can be indirectly judged by controlling the electrolytic current and TDS detection; and (5) judging the scaling condition, and descaling through a preset descaling flow.
In an exemplary embodiment of the present application, the determining whether or not scale is generated on the electrolytic sheet based on the detected TDS value and the actual operating current of the electrolytic circuit may include:
under the condition that the resistance value of the sampling resistor is not changed, detecting the change condition of the ratio of the change rate of the TDS value to the change rate of the actual working current;
and judging that scale is generated on the electrolytic sheet when the ratio is gradually increased.
In an exemplary embodiment of the present application, the descaling procedure may include:
setting the resistance value of the sampling resistor as a preset resistance value, acquiring a theoretical value of a TDS value corresponding to the preset resistance value under the current water quality, and detecting an actual value of the TDS value;
when the actual value of the TDS value is smaller than the product of the theoretical value of the TDS value and the first proportion, reducing the resistance value of the sampling resistor; the first ratio satisfies: 0.5-0.8, for example, 0.7;
when the actual value of the TDS value is smaller than the theoretical value of the TDS value, the anode electrolytic sheet and the cathode electrolytic sheet of the electrolytic sheet are reversed, so that the scale is separated from the surface of the electrolytic sheet under the action of a reverse electric field.
In an exemplary embodiment of the present application, a detailed embodiment of the descaling procedure is given below, as shown in fig. 7. The following process may be included:
1. the triodes Q101 and Q102 are turned on, the theoretical working current is I2, and the corresponding TDS theoretical value is D2;
2. testing the TDS actual value D at the moment;
3. if D is less than D2 x 0.7; the triodes Q101, Q102 and Q103 are opened; at the moment, the theoretical current I3 corresponds to a TDS value D3;
4. if D is less than D2, the scale is serious, and can be separated from the surface of the electrolytic sheet under the action of the reverse electric field by reversing the anode and cathode voltage;
5. after the reverse voltage working time T1, the positive voltage can be set again to work T2, T2 is less than T1/2, and the positive and negative voltage working time length T is cycled; t is 3min, T2> is 10s, T1> is 20 s;
6. if D is larger than D2 and smaller than D3 × 0.7 in the 4 th step, the triodes Q101, Q102, Q103 and Q104 can be opened;
7. the TDS theoretical value is D4, and if the actual TDS value D is larger than D3, descaling is not performed; if D is less than D3, repeating the descaling steps of the 4 th step and the 5 th step;
8. after descaling for a period T, repeating the steps 1, 2 and 3 to detect whether descaling is finished; if the descaling is not finished, the descaling is continued until D is more than D2 x 0.7.
In the exemplary embodiment of the application, the scheme of the embodiment of the application estimates the water conductivity in real time, and prompts a user whether to add salt according to the water quality, so that the good electrolysis effect is ensured; then, through power estimation, if the power reaches a limit level, the temperature rise and the service life of the circuit are protected through on-off time control; finally, under the condition that the scale is formed on the electrolytic sheet, the scale is removed through program judgment and reverse voltage treatment, so that the continuity of the electrolytic effect is ensured.
The embodiment of the present application further provides a household appliance 1, as shown in fig. 8, which may include: a processor 11, a computer readable storage medium 12, and an electrolytic circuit 13; the electrolysis circuit 13 may include: the device comprises a power supply, an electrolytic sheet connected with the power supply and a sampling resistor connected in series between the power supplies; the computer readable storage medium stores instructions which, when executed by the processor, implement the water electrolysis control method of the household appliance.
In an exemplary embodiment of the present application, the household appliance may further include: a total dissolved solids TDS detection circuit 14; the total dissolved solids TDS detection circuit 14 is connected to the processor 11.
It will be understood by those of ordinary skill in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
Claims (10)
1. A water electrolysis control method of a household appliance, characterized in that the household appliance comprises an electrolysis circuit; the electrolytic circuit includes: the device comprises a power supply, an electrolytic sheet connected with the power supply and a sampling resistor connected in series between the power supplies; the method comprises the following steps:
after the electrolytic circuit is started, measuring the actual working current of the electrolytic circuit through the sampling resistor;
comparing the actual working current with a theoretical working current which is calculated under the condition of the same sampling resistance value and is used when the electrolytic circuit works;
and judging whether the conductivity of the water quality electrolyzed at present is normal according to the comparison result, and adopting a corresponding conductivity adjustment scheme according to the judgment result.
2. The water electrolysis control method of a home appliance according to claim 1, wherein the judging whether the conductivity of the currently electrolyzed water quality is normal according to the comparison result comprises:
when the actual working current is equal to the theoretical working current, judging that the conductivity of the current water quality is normal;
when the actual working current is smaller than the theoretical working current, judging that the conductivity of the current water quality is smaller;
and when the actual working current is larger than the theoretical working current, judging that the current water quality has larger conductivity.
3. The water electrolysis control method of a home appliance according to claim 2, further comprising: when the actual working current of the electrolytic circuit is measured through the sampling resistor, the resistance value of the sampling resistor connected to the electrolytic circuit is changed, and the actual working current of the electrolytic circuit is measured when the sampling resistors with different resistance values are connected; comparing the actual working current measured for many times with the theoretical working current under the condition of the same sampling resistance value respectively; judging whether the conductivity of the water quality electrolyzed at present is normal or not according to the multiple comparison results;
the sampling resistors are connected in parallel and then connected in series between the positive electrode and the negative electrode of the power supply; the changing of the resistance of the sampling resistor connected to the electrolytic circuit comprises: changing the number of sampling resistors connected into the electrolytic circuit.
4. The water electrolysis control method of a home appliance according to claim 3, further comprising:
when the actual working current is judged to be smaller than the theoretical working current through increasing and/or reducing the number of the sampling resistors connected in parallel for multiple times, determining that the current water quality is distilled water or is close to the distilled water; and/or the presence of a gas in the gas,
when the number of the sampling resistors connected in parallel is sequentially increased and the actual working current is judged to be larger than the theoretical working current, determining that the current water quality is saturated saline water or close to the saturated saline water; and when the number of the sampling resistors connected in parallel reaches the maximum, if the actual working current is judged to be larger than the theoretical working current, the power supply is determined to be in the limit state.
5. The water electrolysis control method of household appliances according to claim 4, wherein the adoption of the corresponding conductivity adjustment scheme according to the judgment result comprises:
when the conductivity of the current water quality is judged to be smaller, or the current water quality is determined to be distilled water or close to the distilled water, reminding of adding a material for improving the conductivity into the water; the material comprises a salt;
when the conductivity of the current water quality is judged to be larger, or the current water quality is determined to be saturated saline water or close to the saturated saline water, reducing the working frequency of the electrolytic circuit;
when the power supply is determined to be in the limit state, controlling the working time of the electrolytic circuit within each second to be P _ s/P; wherein P _ s is the rated voltage of the power supply, and P is the limit voltage of the power supply.
6. The water electrolysis control method of a home appliance according to claim 1, further comprising: a total dissolved solids TDS detection circuit;
the method further comprises the following steps: detecting a TDS value of the detected water through the TDS detection circuit, and judging whether scale is generated on the electrolytic sheet according to the detected TDS value and the actual working current of the electrolytic circuit; and entering a descaling process after the occurrence of scale on the electrolytic sheet is judged.
7. The method for controlling water electrolysis of an electric home appliance according to claim 6, wherein the determining whether or not scale is generated on the electrolytic sheet based on the detected TDS value and the actual operating current of the electrolytic circuit comprises:
under the condition that the resistance value of the sampling resistor is not changed, detecting the change condition of the ratio of the change rate of the TDS value to the change rate of the actual working current;
and judging that scale is generated on the electrolytic sheet when the ratio is gradually increased.
8. The water electrolysis control method of a home appliance according to claim 6, wherein the descaling process comprises:
setting the resistance value of the sampling resistor as a preset resistance value, acquiring a theoretical value of a TDS value corresponding to the preset resistance value under the current water quality, and detecting an actual value of the TDS value;
when the actual value of the TDS value is smaller than the product of the theoretical value of the TDS value and the first proportion, reducing the resistance value of the sampling resistor; the first ratio satisfies: 0.5-0.8;
when the actual value of the TDS value is smaller than the theoretical value of the TDS value, the anode electrolytic sheet and the cathode electrolytic sheet of the electrolytic sheet are reversed, so that the scale is separated from the surface of the electrolytic sheet under the action of a reverse electric field.
9. A household appliance, characterized in that it comprises: a processor, a computer readable storage medium, and an electrolysis circuit; the electrolytic circuit includes: the device comprises a power supply, an electrolytic sheet connected with the power supply and a sampling resistor connected in series between the power supplies; the computer-readable storage medium has stored therein instructions that, when executed by the processor, implement a water electrolysis control method of a home appliance according to any one of claims 1 to 8.
10. The household appliance of claim 9, further comprising: a total dissolved solids TDS detection circuit; the total dissolved solids TDS detection circuit is coupled to the processor.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07108272A (en) * | 1993-10-08 | 1995-04-25 | Toto Ltd | Method and apparatus for continuous preparation of ion rich water |
| US5843291A (en) * | 1994-08-23 | 1998-12-01 | Toto Ltd. | Water electrolyzer |
| CN1569667A (en) * | 2003-07-18 | 2005-01-26 | 张华� | Constant current-supplying electrolysis unit for making water and method thereof |
| CN101318725A (en) * | 2007-06-06 | 2008-12-10 | 张华� | Constant-voltage electroanalysis water making apparatus and method |
| JP2015182003A (en) * | 2014-03-24 | 2015-10-22 | Toto株式会社 | Electrolytic water generator |
| CN208632169U (en) * | 2018-07-04 | 2019-03-22 | 深圳锐合飞航智能设备有限公司 | A kind of water quality is adaptively electrolysed control circuit |
| CN109824119A (en) * | 2018-08-09 | 2019-05-31 | 广州铂胜科技有限公司 | A kind of adaptive water treatment device and processing method of fruits and vegetables detoxification machine |
| CN110240234A (en) * | 2019-06-18 | 2019-09-17 | 广东顺德清宇环保科技有限公司 | Control method and water treatment facilities for water treatment facilities |
-
2020
- 2020-10-21 CN CN202011132595.8A patent/CN114381760A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07108272A (en) * | 1993-10-08 | 1995-04-25 | Toto Ltd | Method and apparatus for continuous preparation of ion rich water |
| US5843291A (en) * | 1994-08-23 | 1998-12-01 | Toto Ltd. | Water electrolyzer |
| CN1569667A (en) * | 2003-07-18 | 2005-01-26 | 张华� | Constant current-supplying electrolysis unit for making water and method thereof |
| CN101318725A (en) * | 2007-06-06 | 2008-12-10 | 张华� | Constant-voltage electroanalysis water making apparatus and method |
| JP2015182003A (en) * | 2014-03-24 | 2015-10-22 | Toto株式会社 | Electrolytic water generator |
| CN208632169U (en) * | 2018-07-04 | 2019-03-22 | 深圳锐合飞航智能设备有限公司 | A kind of water quality is adaptively electrolysed control circuit |
| CN109824119A (en) * | 2018-08-09 | 2019-05-31 | 广州铂胜科技有限公司 | A kind of adaptive water treatment device and processing method of fruits and vegetables detoxification machine |
| CN110240234A (en) * | 2019-06-18 | 2019-09-17 | 广东顺德清宇环保科技有限公司 | Control method and water treatment facilities for water treatment facilities |
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