CN116143238A - Constant-current water purification control method and device, storage medium and water purifier - Google Patents
Constant-current water purification control method and device, storage medium and water purifier Download PDFInfo
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- CN116143238A CN116143238A CN202310022008.7A CN202310022008A CN116143238A CN 116143238 A CN116143238 A CN 116143238A CN 202310022008 A CN202310022008 A CN 202310022008A CN 116143238 A CN116143238 A CN 116143238A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- 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
- B01D61/08—Apparatus therefor
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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
- B01D61/10—Accessories; Auxiliary operations
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/12—Controlling or regulating
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/02—Temperature
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/03—Pressure
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/40—Liquid flow rate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
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Abstract
The invention discloses a constant-current water purification control method, a constant-current water purification control device, a storage medium and a water purifier, wherein the method comprises the following steps: acquiring the water inlet temperature and water inlet flow of the reverse osmosis filter element; according to the water inlet temperature and the water inlet flow of the reverse osmosis filter element, the heating device and the pressure regulating pump are controlled so as to maintain the water inlet temperature and the water inlet flow of the reverse osmosis filter element within a standard interval, and the water outlet flow of the reverse osmosis filter element is constant. The invention can avoid the problems of poor single heating flow regulation effect and high energy efficiency by regulating the pressure regulating pump and the heating device together, and can also avoid the problem of overhigh working pressure of the pressurizing system of the single pressure regulating pump, ensure the stable water outlet flow of the reverse osmosis filter element and prolong the service life of the water purifying system.
Description
Technical Field
The invention belongs to the field of water purification, and particularly relates to a constant-current water purification control method, a constant-current water purification control device, a storage medium and a water purifier.
Background
The water purifier is also called a water purifier and a water quality purifier, and is water treatment equipment for carrying out deep filtration and purification treatment on water according to the use requirement of water. The water purifier generally refers to a small-sized purifier used in home. The technical core is a filtering membrane in the filter element device, and the main technology is derived from three types of ultrafiltration membranes, reverse osmosis membranes and nanofiltration membranes.
Reverse osmosis is a new membrane separation technology developed in the 60 s of the last century, and a reverse osmosis membrane relies on a pressure driven separation of solvents and solutes in a solution. H in raw water under a certain pressure 2 The O molecules can pass through the reverse osmosis membrane, and impurities such as inorganic salts, heavy metal ions, organic matters, colloid, bacteria, viruses and the like in the raw water cannot pass through the reverse osmosis membrane, so that the permeable pure water and the impermeable concentrated water can be strictly distinguished. Reverse osmosis equipment is common process water production equipment at present, and is widely applied to the fields of scientific research, medicines, foods, beverages, sea water desalination and the like.
However, in the operation process of the reverse osmosis device, the water yield is unstable due to unstable factors such as the water temperature of the water inlet of the external network, the water inlet pressure, the raw water quality and the like, if the salt or organic matters contained in the raw water are higher, the osmotic pressure is also increased, and under the condition that the water inlet pressure is unchanged, the net pressure is reduced, and the water yield is reduced; furthermore, as the water temperature increases, the water flux also increases linearly, and the water yield is increased/decreased by 2.5% -3.0% when the water temperature of the inlet water increases/decreases by 1 ℃, so that the change of the water temperature of the inlet water also affects the water yield. Therefore, the control of the water yield is very necessary, because the excessive water yield and the excessive recovery rate not only increase concentration polarization, but also lead to the increase of salt permeability, thereby leading to the decrease of desalination rate and affecting the water quality of the produced water. If the water yield is insufficient, the stability of the water supply cannot be ensured.
Disclosure of Invention
The invention provides a constant-current water purification control method, a constant-current water purification control device, a storage medium and a water purifier, which are used for solving the technical problem of unstable water supply in the background technology.
In one aspect of the embodiment of the invention, a constant-current water purification control method is provided, and the method comprises the following steps: acquiring the water inlet temperature and water inlet flow of the reverse osmosis filter element; according to the water inlet temperature and the water inlet flow of the reverse osmosis filter element, the heating device and the pressure regulating pump are controlled so as to maintain the water inlet temperature and the water inlet flow of the reverse osmosis filter element within a standard interval, and the water outlet flow of the reverse osmosis filter element is constant.
Optionally, the heating device and the pressure regulating pump are controlled according to the water inlet temperature and the water inlet flow of the reverse osmosis filter element, and the pressure regulating pump comprises: when the inflow water flow of the reverse osmosis filter element is larger than or equal to the flow threshold, the heat device is closed, and the pressure of the pressure regulating pump is kept.
Optionally, the heating device and the pressure regulating pump are controlled according to the water inlet temperature and the water inlet flow of the reverse osmosis filter element, and the pressure regulating pump comprises: when the water inflow of the reverse osmosis filter element is smaller than the flow threshold value and the water inflow temperature of the reverse osmosis filter element is larger than or equal to the temperature threshold value, the heating device is turned off, and the pressure regulating pump is controlled to boost.
Optionally, the heating device and the pressure regulating pump are controlled according to the water inlet temperature and the water inlet flow of the reverse osmosis filter element, and the pressure regulating pump comprises: when the water inflow of the reverse osmosis filter element is smaller than the flow threshold value and the water inflow temperature of the reverse osmosis filter element is smaller than the temperature threshold value, the heating device is started.
In another aspect of the embodiment of the present invention, there is provided a constant-current water purification control device, including: the acquisition module is used for acquiring the water inlet temperature and the water inlet flow of the reverse osmosis filter element; the control module is used for controlling the heating device and the pressure regulating pump according to the water inlet temperature and the water inlet flow of the reverse osmosis filter element so as to maintain the water inlet temperature and the water inlet flow of the reverse osmosis filter element within a standard interval and ensure that the water outlet flow of the reverse osmosis filter element is constant.
Optionally, the control module is further configured to shut down the thermal device and maintain the pressure of the pressure regulating pump when the flow rate of the inlet water to the reverse osmosis filter element is greater than or equal to a flow rate threshold.
Optionally, the control module is further configured to close the heating device and control the pressure regulating pump to boost when the inflow rate of the reverse osmosis filter element is less than a flow threshold and the inflow temperature of the reverse osmosis filter element is greater than or equal to a temperature threshold.
Optionally, the control module is further configured to turn on the heating device when the inflow rate of the reverse osmosis filter element is less than a flow threshold and the inflow temperature of the reverse osmosis filter element is less than a temperature threshold.
Furthermore, the present invention provides a computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, implements the steps of the method as described above.
In addition, the invention also provides a water purifier which comprises a controller, wherein the controller comprises a memory, a processor and a computer program which is stored in the memory and can run on the processor, and the processor realizes the steps of the method when executing the program.
The constant-current water purification control method, the constant-current water purification control device, the storage medium and the water purifier have the following advantages: through adjusting jointly by the pressure regulating pump and the heating device, the problems of poor single heating flow adjusting effect and high energy efficiency can be avoided, the problem of overhigh working pressure of the pressure increasing system of the single pressure regulating pump can be avoided, the stable water outlet flow of the reverse osmosis filter element is ensured, and the service life of the water purifying system is prolonged.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
FIG. 1 is a flow chart of a constant flow water purification control method of the present invention;
fig. 2 is a block diagram of the constant current water purifying control device of the present invention.
Fig. 3 is a schematic structural view of the water purifier of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art. In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Fig. 1 schematically shows a flow chart of the constant flow water purification control method of the present invention. Referring to fig. 1, the constant-current water purification control method provided by the embodiment of the invention specifically includes steps S10 to S20:
s10, acquiring the water inlet temperature and the water inlet flow of the reverse osmosis filter element;
in this embodiment, the inlet water temperature of the reverse osmosis filter element is detected by a flow meter, and the inlet water flow rate of the reverse osmosis filter element is detected by a temperature probe. Because all detect reverse osmosis filter core's inflow data, so flowmeter and temperature probe all install on reverse osmosis filter core's import.
Compared with the traditional reverse osmosis filter element, the reverse osmosis filter element has the advantages that flow detection and flow control are only carried out on the reverse osmosis filter element, the data of the water inlet temperature is increased, the temperature is detected and controlled simultaneously at the subsequent time, and the influence of the temperature on the reverse osmosis membrane is further reduced.
S20, controlling the heating device and the pressure regulating pump according to the water inlet temperature and the water inlet flow of the reverse osmosis filter element so as to maintain the water inlet temperature and the water inlet flow of the reverse osmosis filter element within a standard interval, and enabling the water outlet flow of the reverse osmosis filter element to be constant.
In this embodiment, whether the preset ideal state is satisfied is determined according to the determination of the detection acquisition condition. No adjustment is required if satisfied. If not, then corresponding adjustments are made. The constant flow of the discharged water is ensured by the flow control assisted by temperature control.
In this embodiment, the heating is performed by a heating device provided upstream of the temperature probe, and the reverse osmosis unit can be kept at a constant temperature or a high temperature by heating by the heating device, so that the water production flux is high. Secondly, the temperature of the outlet water is increased by heating the heating device, and the filtering effect and the backwashing effect of the reverse osmosis filter element are ensured by inhibiting bacteria and scale in the inlet water of the reverse osmosis membrane.
In this embodiment, the pressure regulating pump is used instead of the existing constant pressure pump, and the inflow rate is controlled by controlling the input voltage of the constant pressure pump. Thereby directly controlling the water inflow.
Specifically, according to the temperature and the flow of intaking of reverse osmosis filter core, controlling heating device and pressure regulating pump to with the temperature of intaking and the flow of intaking that get into reverse osmosis filter core maintain in standard interval, make the play water flow of reverse osmosis filter core invariable, include:
when the inflow water flow of the reverse osmosis filter element is larger than or equal to a flow threshold, closing the heat device and keeping the pressure of the pressure regulating pump;
when the water inflow of the reverse osmosis filter element is smaller than a flow threshold value and the water inflow temperature of the reverse osmosis filter element is larger than or equal to a temperature threshold value, the heating device is turned off, and the pressure regulating pump is controlled to boost;
when the water inflow of the reverse osmosis filter element is smaller than the flow threshold value and the water inflow temperature of the reverse osmosis filter element is smaller than the temperature threshold value, the heating device is started.
The flow threshold is correspondingly set according to a specific reverse osmosis filter element, and the embodiment of the invention is not repeated, but the temperature threshold is generally 25 ℃. When the temperature is higher than 25 ℃, the water inflow of the reverse osmosis filter element is negligible.
Correspondingly, after the heating device is started to raise the temperature to be above the temperature threshold, the water inlet temperature and the water inlet flow of the reverse osmosis filter element are acquired again, so that the circulation of the whole flow method is realized.
For the purposes of simplicity of explanation, the methodologies are shown and described as a series of acts, it is to be understood and appreciated by one of ordinary skill in the art that the methodologies are not limited by the order of acts, as some acts may, in accordance with the methodologies, take place in other order or concurrently. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred embodiments, and that the acts are not necessarily required by the embodiments of the invention.
Fig. 2 schematically shows a schematic structure of a constant-current water purification control device according to an embodiment of the present invention. Referring to fig. 2, the constant-current water purifying control device according to the embodiment of the present invention specifically includes an acquisition module 1 and a control module 2, where:
the acquisition module 1 is used for acquiring the water inlet temperature and the water inlet flow of the reverse osmosis filter element;
and the control module 2 is used for controlling the heating device and the pressure regulating pump according to the water inlet temperature and the water inlet flow of the reverse osmosis filter element so as to maintain the water inlet temperature and the water inlet flow of the reverse osmosis filter element within a standard interval and ensure that the water outlet flow of the reverse osmosis filter element is constant.
In one embodiment, the control module is further configured to shut down the thermal device and maintain the pressure of the pressure regulating pump when the flow of inlet water to the reverse osmosis cartridge is greater than or equal to a flow threshold.
In one embodiment, the control module is further configured to turn off the heating device and control the pressure regulating pump to boost when the inflow water flow rate of the reverse osmosis filter element is less than a flow rate threshold and the inflow water temperature of the reverse osmosis filter element is greater than or equal to a temperature threshold.
In one embodiment, the control module is further configured to turn on the heating device when the inflow rate of the reverse osmosis filter element is less than a flow threshold and the inflow temperature of the reverse osmosis filter element is less than a temperature threshold.
For the device embodiments, since they are substantially similar to the method embodiments, the description is relatively simple, and reference is made to the description of the method embodiments for relevant points.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
The constant-flow water purification control method and the constant-flow water purification control device provided by the embodiment of the invention can control the flow and the temperature, can avoid the problems of poor single-temperature-rise flow regulation effect and high energy efficiency by regulating the pressure regulating pump and the heating device together, can also avoid the problem of overhigh working pressure of a single pressure regulating pump pressurizing system, can ensure the stable water outlet flow of the reverse osmosis filter element, and can prolong the service life of the water purification system; when the conditions are not met, the temperature is firstly adjusted, and on the premise that the temperature meets the conditions, the flow is adjusted, so that the stability of the water outlet flow of the reverse osmosis filter element is ensured.
Furthermore, embodiments of the present invention provide a computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, implements the steps of the method as described above.
In this embodiment, the module/unit integrated with the rice outlet control device may be stored in a computer readable storage medium if implemented as a software functional unit and sold or used as a separate product. Based on such understanding, the present invention may implement all or part of the flow of the method of the above embodiment, or may be implemented by a computer program to instruct related hardware, where the computer program may be stored in a computer readable storage medium, and when the computer program is executed by a processor, the computer program may implement the steps of each of the method embodiments described above. Wherein the computer program comprises computer program code which may be in source code form, object code form, executable file or some intermediate form etc. The computer readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth. It should be noted that the computer readable medium contains content that can be appropriately scaled according to the requirements of jurisdictions in which such content is subject to legislation and patent practice, such as in certain jurisdictions in which such content is subject to legislation and patent practice, the computer readable medium does not include electrical carrier signals and telecommunication signals.
In addition, the invention also provides a water purifier, which comprises a water purifier body and a controller.
The water purifier body comprises a pretreatment filter element 3, a reverse osmosis filter element 4 and a rear filter element 5 which are adjacent in sequence. A flowmeter 6, a heating device 7, a temperature probe 8 and a pressure regulating pump 9 are arranged on the water inlet pipe of the reverse osmosis filter element at one time to support the implementation of the method.
The controller comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the processor executes the computer program to implement the steps in the embodiments of the rice-out control method, such as S10 to S20 shown in fig. 1. Alternatively, the processor may implement the functions of the modules/units in the embodiments of the rice-out control device described above when executing the computer program, for example, the acquisition module 1 and the control module 2 shown in fig. 2.
The computer program may be divided into one or more modules/units, which are stored in the memory and executed by the processor to accomplish the present invention, for example. The one or more modules/units may be a series of instruction segments of a computer program capable of performing a specific function, the instruction segments describing the execution of the computer program in the rice outlet control device. For example, the computer program may be divided into an acquisition module 1 and a control module 2.
The water purifier may include other components, but is not limited to, a processor, a memory. Those skilled in the art will appreciate that the rice may include more or fewer components, or may combine certain components, or different components, such as input and output devices, network access devices, buses, etc.
The processor may be a central processing unit (CentralProcessingUnit, CPU), but may also be other general purpose processors, digital signal processors (DigitalSignalProcessor, DSP), application specific integrated circuits (ApplicationSpecificIntegratedCircuit, ASIC), off-the-shelf programmable gate arrays (Field-ProgrammableGateArray, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. The general purpose processor may be a microprocessor or the processor may be any conventional processor or the like, which is the control center of the rice outlet, and various interfaces and lines are used to connect various parts of the whole rice outlet.
The memory may be used to store the computer program and/or the module, and the processor may implement the various functions of the rice outlet by running or executing the computer program and/or the module stored in the memory and invoking data stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like; the storage data area may store data (such as audio data, phonebook, etc.) created according to the use of the handset, etc. In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as a hard disk, memory, plug-in hard disk, smart memory card (SmartMediaCard, SMC), secure digital (SecureDigital, SD) card, flash card (FlashCard), at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
Those skilled in the art will appreciate that while some embodiments herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments can be used in any combination.
It will be understood that the invention has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. A constant flow water purification control method, characterized in that the method comprises:
acquiring the water inlet temperature and water inlet flow of the reverse osmosis filter element;
according to the water inlet temperature and the water inlet flow of the reverse osmosis filter element, the heating device and the pressure regulating pump are controlled so as to maintain the water inlet temperature and the water inlet flow of the reverse osmosis filter element within a standard interval, and the water outlet flow of the reverse osmosis filter element is constant.
2. The constant flow water purification control method according to claim 1, wherein the controlling the heating device and the pressure regulating pump according to the inlet water temperature and the inlet water flow rate of the reverse osmosis filter cartridge comprises:
when the inflow water flow of the reverse osmosis filter element is larger than or equal to the flow threshold, the heat device is closed, and the pressure of the pressure regulating pump is kept.
3. The constant flow water purification control method according to claim 1, wherein the controlling the heating device and the pressure regulating pump according to the inlet water temperature and the inlet water flow rate of the reverse osmosis filter cartridge comprises:
when the water inflow of the reverse osmosis filter element is smaller than the flow threshold value and the water inflow temperature of the reverse osmosis filter element is larger than or equal to the temperature threshold value, the heating device is turned off, and the pressure regulating pump is controlled to boost.
4. A constant flow water purification control method according to claim 1 or 3, wherein the controlling the heating device and the pressure regulating pump according to the inlet water temperature and inlet water flow rate of the reverse osmosis filter cartridge comprises:
when the water inflow of the reverse osmosis filter element is smaller than the flow threshold value and the water inflow temperature of the reverse osmosis filter element is smaller than the temperature threshold value, the heating device is started.
5. A constant flow water purification control device, the device comprising:
the acquisition module is used for acquiring the water inlet temperature and the water inlet flow of the reverse osmosis filter element;
the control module is used for controlling the heating device and the pressure regulating pump according to the water inlet temperature and the water inlet flow of the reverse osmosis filter element so as to maintain the water inlet temperature and the water inlet flow of the reverse osmosis filter element within a standard interval and ensure that the water outlet flow of the reverse osmosis filter element is constant.
6. The constant flow water purification control device according to claim 5, wherein the control module is further configured to shut down the thermal device and maintain the pressure of the pressure regulating pump when the flow rate of the inlet water to the reverse osmosis cartridge is equal to or greater than a flow rate threshold.
7. The constant flow water purification control device according to claim 5, wherein the control module is further configured to turn off the heating device and control the pressure regulating pump to boost pressure when the inflow rate of the reverse osmosis filter element is less than a flow threshold and the inflow temperature of the reverse osmosis filter element is equal to or greater than a temperature threshold.
8. The constant flow water purification control device according to claim 5 or 7, wherein the control module is further configured to turn on the heating device when the inflow rate of the reverse osmosis filter element is less than a flow threshold and the inflow temperature of the reverse osmosis filter element is less than a temperature threshold.
9. A computer readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, implements the steps of the method according to any of claims 1-4.
10. A water purifier comprising a controller, wherein the controller comprises a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the method according to any one of claims 1-4 when the program is executed.
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