CN214270417U - Water purification system - Google Patents
Water purification system Download PDFInfo
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- CN214270417U CN214270417U CN202023061879.0U CN202023061879U CN214270417U CN 214270417 U CN214270417 U CN 214270417U CN 202023061879 U CN202023061879 U CN 202023061879U CN 214270417 U CN214270417 U CN 214270417U
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Abstract
The utility model relates to a water purification technology field, concretely relates to water purification system, include: a fine filtration unit; the pump is connected to the upstream position of the fine filtering unit, and the rotating speed of the pump is adjustable; at least two of a water quality sensor, a pressure sensor and a temperature sensor, wherein the water quality sensor and the pressure sensor are suitable for being arranged at the upstream position of the fine filtering unit; and the controller is electrically connected with the water quality sensor, the pressure sensor, the temperature sensor and the pump. Can detect two at least in quality of water, pressure, the temperature of raw water, the controller can be according to the quality of water value that water quality sensor detected, the pressure value that pressure sensor detected, at least two in the temperature value that temperature sensor detected adjust the rotational speed of pump to can adjust the output pressure and the flow of pump in real time, adjust water purification system's pure waste ratio, prolong fine filtering unit's filter core life-span.
Description
Technical Field
The utility model relates to a water purification technology field, concretely relates to water purification system.
Background
The existing water purification system consists of a pretreatment filter element, a booster pump, a reverse osmosis membrane filter element and a post-positioned filter element. In the water production process, raw water is subjected to coarse filtration by the pretreatment filter element, a booster pump provides certain pressure, the reverse osmosis membrane filter element generates pure water, the pure water is subjected to post-positioned filter element to improve water quality and taste, and concentrated water is directly discharged. The municipal tap water has large fluctuation ranges such as TDS, hardness and PH value, the water supply pressure fluctuates in a certain range, usually 0.1-0.7 Mpa, the water temperature is greatly different all the year round, when the water purification system is in actual use, the pure waste ratio, the service life of a filter element and the water quality of outlet water of the water purification system are influenced to a certain extent due to the fluctuation of the water quality, the water pressure and the water temperature, the water purification system has low pure waste ratio and/or poor water quality and/or low water pressure, the problem of short service life of the filter element can be caused when the water quality is poor, when the water pressure and the water temperature are low, the water purification efficiency is influenced, and the user experience is poor. Meanwhile, the service life of the motor is shortened along with the prolonging of the service time of the conventional booster pump, and the service life of the water purification system is further influenced.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in overcoming the water purification system temperature among the prior art low, and/or quality of water is poor, and/or water pressure is low, can cause the pure waste ratio of water purification system lower, can cause the filter core life-span short when quality of water is poor, when water pressure is low, the temperature is low, influences water purification efficiency, the relatively poor defect of user experience to a water purification system of adjustable pure waste ratio, extension filter core life-span is provided.
In order to solve the technical problem, the utility model provides a pair of water purification system, include:
a fine filtration unit;
the pump is connected to the upstream position of the fine filtering unit, and the rotating speed of the pump is adjustable;
at least two of a water quality sensor, a pressure sensor, and a temperature sensor, wherein the water quality sensor and the pressure sensor are adapted to be disposed at an upstream location of the fine filtration unit;
the controller, with quality of water sensor, pressure sensor, temperature sensor reach the pump electricity is connected, when the quality of water value that quality of water sensor detected is less than first preset quality of water value, correspond the preset rotational speed of pump is V0, when the pressure value that pressure sensor detected is less than first preset pressure value, correspond the preset rotational speed of pump is V1, when the temperature value that temperature sensor detected is less than first preset temperature value, correspond the preset rotational speed of pump is V2, the controller is used for:
when the water quality value detected by the water quality sensor is smaller than a first preset water quality value and the pressure value detected by the pressure sensor is smaller than a first preset pressure value, controlling the rotating speed of the pump to be increased to the maximum values of V0 and V1;
or when the water quality value detected by the water quality sensor is smaller than a first preset water quality value and the temperature value detected by the temperature sensor is smaller than a first preset temperature value, controlling the rotating speed of the pump to be increased to the maximum values of V0 and V2;
or when the pressure value detected by the pressure sensor is smaller than a first preset pressure value and the temperature value detected by the temperature sensor is smaller than a first preset temperature value, controlling the rotating speed of the pump to be increased to the maximum values of V1 and V2;
or when the water quality value detected by the water quality sensor is smaller than a first preset water quality value, the pressure value detected by the pressure sensor is smaller than a first preset pressure value, and the temperature value detected by the temperature sensor is smaller than a first preset temperature value, the rotating speed of the pump is controlled to be increased to the maximum values of V0, V1 and V2.
Optionally, the controller is further configured to reduce the rotation speed of the pump when the water quality value detected by the water quality sensor is greater than a second preset water quality value, where the second preset water quality value is greater than the first preset water quality value.
Optionally, the controller is further configured to reduce the rotation speed of the pump when the water quality value detected by the water quality sensor is greater than or equal to the first preset water quality value and less than or equal to the second preset water quality value.
Optionally, the controller is further configured to reduce the rotation speed of the pump when the pressure value detected by the pressure sensor is greater than a second preset pressure value, where the second preset pressure value is greater than the first preset pressure value.
Optionally, the controller is further configured to reduce the rotation speed of the pump when the temperature value detected by the temperature sensor is greater than a second preset temperature value, where the second preset temperature value is greater than the first preset temperature value.
When the quality of water value that water quality sensor detected is greater than the second and predetermines the quality of water value, correspond the preset rotational speed of pump is V3, when the pressure value that pressure sensor detected is greater than the second and predetermines the pressure value, correspond the preset rotational speed of pump is V4, when the temperature value that temperature sensor detected is greater than the second and predetermines the temperature value, correspond the preset rotational speed of pump is V5, the controller is used for:
when the water quality value detected by the water quality sensor is greater than a second preset water quality value and the pressure value detected by the pressure sensor is greater than a second preset pressure value, controlling the rotating speed of the pump to be reduced to the minimum value of V3 and V4;
or when the water quality value detected by the water quality sensor is greater than a second preset water quality value and the temperature value detected by the temperature sensor is greater than a second preset temperature value, controlling the rotating speed of the pump to be reduced to the minimum value of V3 and V5;
or when the pressure value detected by the pressure sensor is greater than a second preset pressure value and the temperature value detected by the temperature sensor is greater than a second preset temperature value, controlling the rotating speed of the pump to be reduced to the minimum value of V4 and V5;
or when the water quality value detected by the water quality sensor is greater than a second preset water quality value, the pressure value detected by the pressure sensor is greater than a second preset pressure value, and the temperature value detected by the temperature sensor is greater than a second preset temperature value, the rotating speed of the pump is controlled to be reduced to the minimum value of V3, V4 and V5.
Optionally, the water purification system further comprises a pretreatment unit and a pure water backflow branch section, the pretreatment unit is arranged at the upstream position of the fine filtering unit, one end of the pure water backflow branch section is communicated with a pure water outlet of the fine filtering unit, one end of the pure water backflow branch section is communicated with a pipeline between the pretreatment unit and the pump, and a one-way valve is arranged on the pure water backflow branch section.
Optionally, the water purification system further comprises a timing unit for calculating a time interval between two adjacent water productions, and the controller is electrically connected to the timing unit and is configured to increase the rotation speed of the pump when the time interval calculated by the timing unit is greater than or equal to a first preset time.
Optionally, the controller is further configured to reduce the rotation speed of the pump when the time interval calculated by the timing unit is smaller than a second preset time, where the second preset time is smaller than the first preset time.
Optionally, the pump is a brushless pump.
The utility model discloses technical scheme has following advantage:
1. the utility model provides a water purification system, through setting up two at least among water quality sensor, pressure sensor, the temperature sensor, and water quality sensor, pressure sensor set up in the upstream position of smart filter unit, can detect two at least in quality of water, pressure, the temperature of raw water, the controller can be according to the quality of water value that water quality sensor detected pressure value that pressure sensor detected two at least in the temperature value that temperature sensor detected adjust the rotational speed of pump to but real-time regulation pump's output pressure and flow adjust water purification system's pure useless ratio, prolong smart filter unit's filter core life.
2. The utility model provides a water purification system, the pump is brushless pump. The brushless pump has no carbon brush, so that mechanical abrasion is avoided, the service life of the motor is greatly prolonged, and the reliability of the water purification system is improved; meanwhile, the water purification system can realize adjustment control by itself to obtain multiple groups of operation parameters, has a large control range, improves the wide water quality, and has adaptivity under the working conditions of wide water temperature and wide water pressure, thereby being beneficial to intelligent control and adjustment and improving the reliability of the water purification system to the maximum extent.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a water purification system provided in example 1 of the present invention in one embodiment.
Description of reference numerals:
1-a pre-treatment unit; 2-a pump; 3-a fine filtration unit; 4, arranging a filter element at the rear; 5-a waste water valve; 6-a water quality sensor; 7-a controller; 8-a pressure sensor; 9-a temperature sensor; 10-a one-way valve; 11-raw water inlet.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed 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 is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
Example 1
The existing water purification system consists of a pretreatment filter element, a booster pump, a reverse osmosis membrane filter element and a post-positioned filter element. In the water production process, raw water is subjected to coarse filtration by the pretreatment filter element, a booster pump provides certain pressure, the reverse osmosis membrane filter element generates pure water, the pure water is subjected to post-positioned filter element to improve water quality and taste, and concentrated water is directly discharged. The municipal tap water has large fluctuation ranges such as TDS, hardness and PH value, the water supply pressure fluctuates in a certain range, usually 0.1-0.7 Mpa, the water temperature is greatly different all the year round, when the water purification system is in actual use, the pure waste ratio, the service life of a filter element and the water quality of outlet water of the water purification system are influenced to a certain extent due to the fluctuation of the water quality, the water pressure and the water temperature, the water purification system has low pure waste ratio and/or poor water quality and/or low water pressure, the problem of short service life of the filter element can be caused when the water quality is poor, when the water pressure and the water temperature are low, the water purification efficiency is influenced, and the user experience is poor. Meanwhile, the service life of the motor is shortened along with the prolonging of the service time of the conventional booster pump, and the service life of the water purification system is further influenced.
Therefore, the embodiment provides a water purification system, which can adjust pure wastewater and prolong the service life of the filter element. In one embodiment, as shown in fig. 1, the water purification system includes a raw water inlet, a pretreatment unit, a fine filtration unit, a concentrated water pipeline, a pump, and at least two of a water quality sensor, a pressure sensor, and a temperature sensor, and a controller.
The pretreatment unit 1 is arranged at the downstream position of the raw water inlet 11 and is used for performing coarse filtration on raw water, and the pretreatment unit 1 can adopt PP cotton, PAC, a microfiltration membrane, an ultrafiltration membrane, a carbon filter element or a combination thereof; the fine filtering unit 3 is arranged at the downstream position of the pretreatment unit 1, the fine filtering unit can be a reverse osmosis membrane filter core or a nanofiltration membrane filter core, the fine filtering unit 3 is provided with a pure water outlet and a concentrated water outlet, the pure water outlet can directly flow to the water outlet of the water purification system or flow to the water outlet of the water purification system after being filtered again by a post-positioned filter core 4, the concentrated water outlet is communicated with a concentrated water pipeline, a waste water valve 5 is arranged on the concentrated water pipeline, the controller 7 can control the waste water valve 5 to be opened or closed to realize the working states of water preparation, flushing and the like of the water purification system, and the waste water valve 5 can be in various forms such as a waste water hole electromagnetic valve or a waste water ratio; the pump 2 is connected with the upstream position of the fine filtering unit and is specifically positioned between the pretreatment unit 1 and the fine filtering unit 3, and the rotating speed of the pump 2 is adjustable; at least two of the water quality sensor 6, the pressure sensor 8 and the temperature sensor 9 are arranged, when the water quality sensor and/or the pressure sensor are arranged, the water quality sensor and/or the pressure sensor are arranged at the upstream position of the fine filtering unit 3, and the temperature sensor can be arranged at any position on the water purifying system, can be arranged at the upstream position of the fine filtering unit 3 and can also be arranged at the downstream position thereof; controller 7 is connected with water quality sensor 6, pressure sensor 8, temperature sensor 9 and pump 2 electricity, the quality of water value that water quality sensor detected is less than when first predetermined quality of water value, corresponds the predetermined rotational speed of pump is V0, when the pressure value that pressure sensor detected is less than first predetermined pressure value, correspond the predetermined rotational speed of pump is V1, when the temperature value that temperature sensor detected is less than first predetermined temperature value, correspond the predetermined rotational speed of pump is V2, the controller is used for: when the water quality value detected by the water quality sensor is smaller than a first preset water quality value and the pressure value detected by the pressure sensor is smaller than a first preset pressure value, controlling the rotating speed of the pump to be increased to the maximum values of V0 and V1; or when the water quality value detected by the water quality sensor is smaller than a first preset water quality value and the temperature value detected by the temperature sensor is smaller than a first preset temperature value, controlling the rotating speed of the pump to be increased to the maximum values of V0 and V2; or when the pressure value detected by the pressure sensor is smaller than a first preset pressure value and the temperature value detected by the temperature sensor is smaller than a first preset temperature value, controlling the rotating speed of the pump to be increased to the maximum values of V1 and V2; or when the water quality value detected by the water quality sensor is smaller than a first preset water quality value, the pressure value detected by the pressure sensor is smaller than a first preset pressure value, and the temperature value detected by the temperature sensor is smaller than a first preset temperature value, the rotating speed of the pump is controlled to be increased to the maximum values of V0, V1 and V2.
The water purification system provided by the embodiment is provided with at least two of the water quality sensor, the pressure sensor and the temperature sensor, the water quality sensor and the pressure sensor are arranged at the upstream position of the fine filtering unit 3, at least two of the water quality, the pressure and the temperature of raw water can be detected, the controller can adjust the rotating speed of the pump 2 according to at least two of the water quality value detected by the water quality sensor 6, the pressure value detected by the sensor 8 and the temperature value detected by the temperature sensor 9, so that the output pressure and the flow of the pump 2 can be adjusted in real time, the pure waste ratio of the water purification system is adjusted, and the service life of a filter element of the fine filtering unit 3 is prolonged.
In particular, the speed of the pump may be adjusted by adjusting the voltage and/or current of the pump.
In one embodiment, a water quality sensor 6 and a pressure sensor 8 are disposed at an upstream position of the fine filtering unit 3, and when the water quality value detected by the water quality sensor 6 is smaller than a first preset water quality value and the pressure value detected by the pressure sensor 8 is smaller than a first preset pressure value, the controller 7 raises the current of the pump 2 to the maximum value of V0 and V1 according to the rotation speed of the pump 2.
The first preset water quality value can be 0, when the water quality value detected by the water quality sensor 6 is less than 0, the water quality is poor, the preset rotating speed of the pump is V0, and the voltage and/or current of the corresponding pump 2 is a 3; the first preset pressure value is 0.1Mpa, when the pressure value detected by the pressure sensor 8 is less than 0.1Mpa, the preset rotating speed of the corresponding pump is V1, and the voltage and/or current of the corresponding pump is b 2. When V0 is larger than V1, namely a3 is larger than b2, the controller raises the voltage and/or current of the pump to a3 and the rotation speed of the pump to V0, and when V1 is larger than V0, namely b2 is larger than a3, the controller raises the voltage and/or current of the pump to b2 and the rotation speed of the pump to V1 and the rotation speed of the pump 2, so that the output pressure and the flow of the pump 2 are raised, the water outlet flow of the water purification system is increased, the pure waste ratio is raised to a set value, the raw water utilization rate is increased, and the service life of the filter element can be prolonged.
In one embodiment, a water quality sensor 6 is disposed at an upstream position of the fine filtering unit 3, a temperature sensor 9 is disposed at an upstream position or a downstream position of the fine filtering unit 3, and the controller is configured to control the rotation speed of the pump to be increased to the maximum value of V0 or V2 when the water quality value detected by the water quality sensor is smaller than a first preset water quality value and the temperature value detected by the temperature sensor is smaller than a first preset temperature value.
The first preset water quality value can be 0, when the water quality value detected by the water quality sensor 6 is less than 0, the water quality is poor, the preset rotating speed of the pump is V0, and the voltage and/or current of the corresponding pump 2 is a 3; the first preset temperature value is 20 ℃, when the temperature value detected by the temperature sensor 9 is less than 20 ℃, the preset rotating speed of the corresponding pump is V2, and the voltage and/or current of the corresponding pump is c 2. When V0 is larger than V2, namely a3 is larger than c2, the controller raises the voltage and/or current of the pump to a3 and the rotation speed of the pump to V0, and when V2 is larger than V0, namely c2 is larger than a3, the controller raises the voltage and/or current of the pump to c2 and the rotation speed of the pump to V2 and the rotation speed of the pump 2, so that the output pressure and the flow of the pump 2 are raised, the water outlet flow of the water purification system is increased, the pure waste ratio is raised to a set value, the raw water utilization rate is increased, and the service life of the filter element can be prolonged.
In one embodiment, a pressure sensor 8 is disposed at an upstream position of the fine filtering unit 3, a temperature sensor 9 is disposed at an upstream position or a downstream position of the fine filtering unit 3, and the controller is configured to control the rotation speed of the pump to be increased to the maximum value of V1 or V2 when a pressure value detected by the pressure sensor is smaller than a first preset pressure value and a temperature value detected by the temperature sensor is smaller than a first preset temperature value.
The first preset pressure value is 0.1Mpa, when the pressure value detected by the pressure sensor 8 is less than 0.1Mpa, the preset rotating speed of the corresponding pump is V1, and the voltage and/or current of the corresponding pump is b 2; the first preset temperature value is 20 ℃, when the temperature value detected by the temperature sensor 9 is less than 20 ℃, the preset rotating speed of the corresponding pump is V2, and the voltage and/or current of the corresponding pump is c 2. When V1 is larger than V2, namely b2 is larger than c2, the controller raises the voltage and/or current of the pump to b2, and the rotating speed of the pump is raised to V1; when V2 is greater than V1, i.e., c2 is greater than b2, the controller increases the pump voltage and/or current to c2 and increases the pump speed to V2. The rotating speed of the pump 2 is increased, the output pressure and the flow of the pump 2 are increased, the water outlet flow of the water purification system is increased, the pure waste ratio is increased to a set value, the raw water utilization rate is increased, and meanwhile the service life of the filter element can be prolonged.
In one embodiment, a water quality sensor 6 and a pressure sensor 8 are arranged at an upstream position of the fine filtering unit 3, a temperature sensor 9 is arranged at an upstream position or a downstream position of the fine filtering unit 3, and the controller is configured to control the rotation speed of the pump to be increased to the maximum value of V0, V1 and V2 when the water quality value detected by the water quality sensor is smaller than a first preset water quality value, and the pressure value detected by the pressure sensor is smaller than a first preset pressure value and the temperature value detected by the temperature sensor is smaller than a first preset temperature value.
The first preset water quality value can be 0, when the water quality value detected by the water quality sensor 6 is less than 0, the water quality is poor, the preset rotating speed of the pump is V0, and the voltage and/or current of the corresponding pump 2 is a 3; the first preset pressure value is 0.1Mpa, when the pressure value detected by the pressure sensor 8 is less than 0.1Mpa, the preset rotating speed of the corresponding pump is V1, and the voltage and/or current of the corresponding pump is b 2; the first preset temperature value is 20 ℃, when the temperature value detected by the temperature sensor 9 is less than 20 ℃, the preset rotating speed of the corresponding pump is V2, and the voltage and/or current of the corresponding pump is c 2. When V0 is maximum, the controller raises the voltage and/or current of the pump to a3, and the rotation speed of the pump is raised to V0; when V1 is maximum, the controller raises the voltage and/or current of the pump to b2, and the rotation speed of the pump is raised to V1; when V2 is at its maximum, the controller steps up the pump voltage and/or current to c2 and the pump speed to V2.
In other alternative embodiments, the first preset water quality value may be lower than 0, for example, -1, and when the water quality value detected by the water quality sensor 6 is lower than 0, which represents that the water quality is poor, the controller 7 may increase the voltage and/or current of the pump 2 to a4 by adjusting the voltage and/or current of the pump 2, where a4 is greater than a 3.
On the basis of the above embodiment, in a preferred embodiment, the controller 7 is further configured to reduce the rotation speed of the pump 2 when the water quality value detected by the water quality sensor 6 is greater than a second preset water quality value, wherein the second preset water quality value is greater than the first preset water quality value. In this embodiment, the second preset water quality value can be 1, when the water quality value detected by the water quality sensor 6 is greater than 1, the representative water quality is good, the water quality information is transmitted to the controller 7, the controller 7 reduces the voltage and/or the current of the pump 2 to a1 by adjusting the voltage and/or the current of the pump 2, the rotating speed of the pump 2 is reduced, the output pressure and the flow of the pump 2 are reduced, the pure waste ratio of the water purification system is controlled to a set value, the reduction of the service life of the filter element caused by the overhigh pure waste ratio is avoided, and the energy consumption of the system is reduced. In other alternative embodiments, the second preset water quality value may be 2, when the water quality value detected by the water quality sensor 6 is greater than 2, which indicates that the water quality is good, the water quality information is transmitted to the controller 7, and the controller 7 adjusts the voltage and/or current of the pump 2 to reduce the voltage and/or current of the pump 2 to a0, and a0 is smaller than a 1.
On the basis of the above embodiment, in a preferred embodiment, the controller 7 is further configured to reduce the current of the pump 2 to reduce the rotation speed of the pump 2 when the water quality value detected by the water quality sensor 6 is greater than or equal to a first preset water quality value and less than or equal to a second preset water quality value. In the embodiment, when the water quality value detected by the water quality sensor 6 is greater than 0 and less than 1, which represents that the water quality is normal, the water quality information is transmitted to the controller 7, the controller 7 adjusts the voltage and/or the current of the pump 2 to reduce the voltage and/or the current of the pump 2 to a2, the rotating speed of the pump 2 is reduced, the output pressure and the flow of the pump 2 are reduced, and the pure waste ratio of the water purification system is controlled to a set value, so that the service life of the filter element is prevented from being shortened due to the overhigh pure waste ratio, and the energy consumption of the system is reduced. In an alternative embodiment, the rotation speed of the pump 2 may not be adjusted when the water quality value detected by the water quality sensor 6 is greater than the first preset water quality value and less than the second preset water quality value.
When the water purification system works for a certain time, the controller 7 energizes the waste water valve 5 on the concentrated water pipeline to execute a flushing program, so that membrane surface pollutants are cleaned, and the service life of the filter element is prolonged. In an alternative embodiment, the first predetermined pressure value may be lower than 0.1Mpa, for example 0.05Mpa, and when the pressure value detected by the pressure sensor 8 is lower than 0.05Mpa, the controller 7 may increase the voltage and/or current of the pump 2 to b3 by adjusting the voltage and/or current of the pump 2, wherein b3 is greater than b 2.
On the basis of the above embodiment, in an embodiment, the controller 7 is further configured to reduce the current of the pump 2 to reduce the rotation speed of the pump 2 when the pressure value detected by the pressure sensor 8 is greater than a second preset pressure value, where the second preset pressure value is greater than the first preset pressure value. When the flushing program is executed, when the water inlet pressure is high, the output pressure and the flow of the pump 2 are both large, the flushing flow is large, and water waste is caused. In one embodiment, the second preset pressure value is 0.4Mpa, when the pressure value detected by the pressure sensor 8 is greater than 0.4Mpa, the pressure information is transmitted to the controller 7, the controller 7 adjusts the voltage and/or the current of the pump 2 to reduce the voltage and/or the current of the pump 2 to b1, the rotating speed of the pump 2 is reduced, the output pressure and the flow rate of the pump 2 are reduced, the pure waste ratio of the water purification system is controlled to a set value, the problem of more waste water under high water pressure is solved, and the energy consumption of the system is reduced at the same time. In other alternative embodiments, the second predetermined pressure value may be higher than 0.4Mpa, for example, 0.6 Mpa, and when the pressure value detected by the pressure sensor 8 is higher than 0.5Mpa, the controller 7 may decrease the voltage and/or current of the pump 2 to b0 by adjusting the voltage and/or current of the pump 2, where b0 is smaller than b 1.
Through statistics, when the water temperature changes by 1 ℃, the flow of the reverse osmosis membrane filter element changes by 3%, and when the inlet water temperature is lower, the flow of the reverse osmosis membrane filter element is greatly reduced, so that the user experience is greatly influenced. In an alternative embodiment, the first preset temperature value may be lower than 20 ℃, for example 10 ℃, and when the temperature value detected by the temperature sensor 9 is lower than 10 ℃, the temperature information is transmitted to the controller 7, and the controller 7 regulates the pump 2 voltage and/or current to be raised to c3, and c3 is higher than c 2.
On the basis of the above embodiment, in a preferred embodiment, the controller 7 is further configured to reduce the current of the pump 2 to reduce the rotation speed of the pump 2 when the temperature value detected by the temperature sensor 9 is greater than a second preset temperature value, where the second preset temperature value is greater than the first preset temperature value. When the temperature of inlet water is higher, the flow of the reverse osmosis membrane is higher than the designed value, the pure waste ratio is higher than the designed value, and the service life of the filter element is shortened. In one embodiment, the second preset temperature value is 25 ℃, when the temperature value detected by the temperature sensor 9 is greater than 25 ℃, the temperature information is transmitted to the controller 7, the controller 7 adjusts the voltage and/or the current of the pump 2 to be reduced to c1, the rotating speed of the pump 2 is reduced, the output pressure and the flow of the pump 2 are reduced, the water outlet flow of the water purification system is controlled to be reduced to the designed value, the high water temperature is avoided, the pure waste ratio is high, and the service life of the filter element is short. In other alternative embodiments, the second preset temperature value may be higher than 25 ℃, for example 30 ℃, and when the temperature value detected by the temperature sensor 9 is higher than 30 ℃, the temperature information is transmitted to the controller 7, and the controller 7 regulates the pump 2 voltage and/or current to be reduced to c0, and c0 is smaller than c 1.
In an embodiment, when the quality of water value that water quality sensor detected is greater than the second and predetermines the quality of water value, correspond the predetermined rotational speed of pump is V3, when the pressure value that pressure sensor detected is greater than the second and predetermines the pressure value, correspond the predetermined rotational speed of pump is V4, when the temperature value that temperature sensor detected is greater than the second and predetermines the temperature value, correspond the predetermined rotational speed of pump is V5, the controller is used for the quality of water value that water quality sensor detected is greater than the second and predetermines the quality of water value, just when the pressure value that pressure sensor detected is greater than the second and predetermines the pressure value, control the rotational speed of pump reduces to V3, V4's minimum.
Specifically, the second preset water quality value may be 1, when the water quality value detected by the water quality sensor 6 is greater than 1, the preset rotation speed of the corresponding pump is V3, and the voltage and/or current of the corresponding pump 2 is a 1; the second preset pressure value is 0.4Mpa, when the pressure value detected by the pressure sensor 8 is greater than 0.4Mpa, the preset rotation speed of the corresponding pump is V4, and the voltage and/or current of the corresponding pump 2 is b 1. When V3 is less than V4, the rotation speed of the pump is controlled to be reduced to V3 by reducing the voltage and/or current of the pump 2 to a 1; when V4 is less than V3, the pump speed is controlled to decrease to V4 by decreasing the voltage and/or current of the pump 2 to b 1.
In one embodiment, the controller is configured to control the rotation speed of the pump to be reduced to a minimum value of V3 or V5 when the water quality value detected by the water quality sensor is greater than a second preset water quality value and the temperature value detected by the temperature sensor is greater than a second preset temperature value.
Specifically, the second preset water quality value may be 1, when the water quality value detected by the water quality sensor 6 is greater than 1, the preset rotation speed of the corresponding pump is V3, and the voltage and/or current of the corresponding pump 2 is a 1; the second preset temperature value is 25 ℃, when the temperature value detected by the temperature sensor 9 is greater than 25 ℃, the preset rotation speed of the corresponding pump is V5, and the voltage and/or current of the corresponding pump 2 is c 1. When V3 is less than V5, the rotation speed of the pump is controlled to be reduced to V3 by reducing the voltage and/or current of the pump 2 to a 1; when V5 is less than V3, the pump speed is controlled to decrease to V5 by decreasing the voltage and/or current of the pump 2 to c 1.
In one embodiment, the controller is configured to control the rotation speed of the pump to be reduced to a minimum value of V4 and V5 when the pressure value detected by the pressure sensor is greater than a second preset pressure value and the temperature value detected by the temperature sensor is greater than a second preset temperature value.
Specifically, the second preset pressure value is 0.4Mpa, when the pressure value detected by the pressure sensor 8 is greater than 0.4Mpa, the preset rotation speed of the corresponding pump is V4, and the voltage and/or current of the corresponding pump 2 is b 1; the second preset temperature value is 25 ℃, when the temperature value detected by the temperature sensor 9 is greater than 25 ℃, the preset rotation speed of the corresponding pump is V5, and the voltage and/or current of the corresponding pump 2 is c 1. When V4 is less than V5, the rotation speed of the pump is controlled to be reduced to V4 by reducing the voltage and/or current of the pump 2 to b 1; when V5 is less than V4, the pump speed is controlled to decrease to V5 by decreasing the voltage and/or current of the pump 2 to c 1.
In one embodiment, the controller is configured to control the rotation speed of the pump to be reduced to the minimum value of V3, V4, and V5 when the water quality value detected by the water quality sensor is greater than a second preset water quality value, the pressure value detected by the pressure sensor is greater than a second preset pressure value, and the temperature value detected by the temperature sensor is greater than a second preset temperature value.
Specifically, the second preset water quality value may be 1, when the water quality value detected by the water quality sensor 6 is greater than 1, the preset rotation speed of the corresponding pump is V3, and the voltage and/or current of the corresponding pump 2 is a 1; the second preset pressure value is 0.4Mpa, when the pressure value detected by the pressure sensor 8 is greater than 0.4Mpa, the preset rotating speed of the corresponding pump is V4, and the voltage and/or current of the corresponding pump 2 is b 1; the second preset temperature value is 25 ℃, when the temperature value detected by the temperature sensor 9 is greater than 25 ℃, the preset rotation speed of the corresponding pump is V5, and the voltage and/or current of the corresponding pump 2 is c 1. When V3 is minimum, the voltage and/or current of the pump 2 is reduced to a1 to control the rotating speed of the pump to be reduced to V3; when V4 is minimum, the pump speed is controlled to be reduced to V4 by reducing the voltage and/or current of the pump 2 to b 1; when V5 is minimal, the pump speed is controlled to decrease to V5 by decreasing the voltage and/or current of the pump 2 to c 1.
On the basis of the above embodiments, in a preferred embodiment, as shown in fig. 1, the water purification system further includes a pure water backflow branch section, one end of the pure water backflow branch section is communicated with the pure water outlet of the fine filtration unit 3, and the other end is communicated with the pipeline between the pretreatment unit 1 and the pump 2, and the pure water backflow branch section is provided with a one-way valve 10. The one-way valve 10 can enable the reverse osmosis filter element pure water to replace high-concentration salt on the membrane surface before flowing to the pump 2 from the pure water outlet, and the problem of poor quality of the outlet water of the first cup of water is solved.
On the basis of the above embodiment, in an embodiment, the water purification system further includes a timing unit, configured to calculate a time interval between two adjacent water productions, and the controller is electrically connected to the timing unit, and configured to raise the current of the pump 2 to raise the rotation speed of the pump 2 when the time interval calculated by the timing unit is greater than a first preset time. The first preset time is D1 hours, when the time interval of two adjacent water making processes is larger than D1, the time information is fed back to the controller 7, when the controller 7 adjusts the pure water backflow program, the voltage and/or the current of the pump 2 are increased to D1, the rotating speed of the pump 2 is increased, the pure water backflow flow speed is increased, and the effluent quality improving effect is improved.
On the basis of the above embodiment, in one embodiment, the controller is further configured to decrease the current of the pump 2 to decrease the rotation speed of the pump 2 when the time interval calculated by the timing unit is less than a second preset time, wherein the second preset time is less than the first preset time. The second preset time is D2 hours, D2 is smaller than D1, when the time interval between two adjacent water making times is smaller than D2, the explanation interval time is short, time information is fed back to the controller 7, when the controller 7 adjusts a pure water backflow program, the voltage and/or current of the pump 2 are reduced to D2, the rotating speed of the pump 2 is reduced, the amount of waste water can be reduced, meanwhile, noise is reduced, and energy is saved.
In addition to the above embodiments, in a preferred embodiment, the pump 2 is a brushless pump. The brushless pump has no carbon brush, so that mechanical abrasion is avoided, the service life of the motor is greatly prolonged, and the reliability of the water purification system is improved; meanwhile, the water purification system can realize adjustment control by itself to obtain multiple groups of operation parameters, has a large control range, improves the wide water quality, and has adaptivity under the working conditions of wide water temperature and wide water pressure, thereby being beneficial to intelligent control and adjustment and improving the reliability of the water purification system to the maximum extent.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (10)
1. A water purification system, comprising:
a fine filtration unit (3);
the pump (2) is connected to the upstream position of the fine filtering unit (3), and the rotating speed of the pump (2) is adjustable;
at least two of a water quality sensor (6), a pressure sensor (8) and a temperature sensor (9), wherein the water quality sensor (6) and the pressure sensor (8) are suitable for being arranged at an upstream position of the fine filtering unit (3);
controller (7), with quality of water sensor (6), pressure sensor (8), temperature sensor (9) and pump (2) electricity is connected, when the quality of water value that quality of water sensor detected is less than first predetermined quality of water value, correspond the predetermined rotational speed of pump is V0, when the pressure value that pressure sensor (8) detected is less than first predetermined pressure value, correspond the predetermined rotational speed of pump is V1, when the temperature value that temperature sensor (9) detected is less than first predetermined temperature value, correspond the predetermined rotational speed of pump is V2, the controller is used for:
when the water quality value detected by the water quality sensor is smaller than a first preset water quality value and the pressure value detected by the pressure sensor (8) is smaller than a first preset pressure value, controlling the rotating speed of the pump to be increased to the maximum values of V0 and V1;
or when the water quality value detected by the water quality sensor is smaller than a first preset water quality value and the temperature value detected by the temperature sensor (9) is smaller than a first preset temperature value, controlling the rotating speed of the pump to be increased to the maximum values of V0 and V2;
or when the pressure value detected by the pressure sensor (8) is smaller than a first preset pressure value and the temperature value detected by the temperature sensor (9) is smaller than a first preset temperature value, controlling the rotating speed of the pump to be increased to the maximum value of V1 and V2;
or when the water quality value detected by the water quality sensor is smaller than a first preset water quality value, the pressure value detected by the pressure sensor (8) is smaller than a first preset pressure value, and the temperature value detected by the temperature sensor (9) is smaller than a first preset temperature value, the rotating speed of the pump is controlled to be increased to the maximum values of V0, V1 and V2.
2. The water purification system of claim 1, wherein the controller (7) is further configured to reduce the rotation speed of the pump (2) when the water quality value detected by the water quality sensor (6) is greater than a second preset water quality value, wherein the second preset water quality value is greater than the first preset water quality value.
3. The water purification system of claim 2, wherein the controller (7) is further configured to reduce the rotation speed of the pump (2) when the water quality value detected by the water quality sensor (6) is greater than or equal to the first preset water quality value and less than or equal to the second preset water quality value.
4. The water purification system of claim 1, wherein the controller (7) is further configured to reduce the rotation speed of the pump (2) when the pressure value detected by the pressure sensor (8) is greater than a second preset pressure value, wherein the second preset pressure value is greater than the first preset pressure value.
5. The water purification system of claim 1, wherein the controller (7) is further configured to reduce the rotation speed of the pump (2) when the temperature value detected by the temperature sensor (9) is greater than a second preset temperature value, wherein the second preset temperature value is greater than the first preset temperature value.
6. The water purification system of any one of claims 1 to 5, wherein the water quality sensor detects a water quality value greater than a second preset water quality value, the preset rotation speed of the pump is V3, the pressure sensor (8) detects a pressure value greater than the second preset pressure value, the preset rotation speed of the pump is V4, the temperature sensor (9) detects a temperature value greater than the second preset temperature value, the preset rotation speed of the pump is V5, and the controller is configured to:
when the water quality value detected by the water quality sensor is larger than a second preset water quality value and the pressure value detected by the pressure sensor (8) is larger than a second preset pressure value, controlling the rotating speed of the pump to be reduced to the minimum value of V3 and V4;
or when the water quality value detected by the water quality sensor is greater than a second preset water quality value and the temperature value detected by the temperature sensor (9) is greater than a second preset temperature value, controlling the rotating speed of the pump to be reduced to the minimum value of V3 and V5;
or when the pressure value detected by the pressure sensor (8) is greater than a second preset pressure value and the temperature value detected by the temperature sensor (9) is greater than a second preset temperature value, controlling the rotating speed of the pump to be reduced to the minimum value of V4 and V5;
or when the water quality value detected by the water quality sensor is greater than a second preset water quality value, the pressure value detected by the pressure sensor (8) is greater than a second preset pressure value, and the temperature value detected by the temperature sensor (9) is greater than a second preset temperature value, the rotating speed of the pump is controlled to be reduced to the minimum value of V3, V4 and V5.
7. The water purification system according to claim 1, further comprising a pretreatment unit (1) and a pure water return branch section, wherein the pretreatment unit (1) is disposed at an upstream position of the fine filtration unit (3), one end of the pure water return branch section is communicated with a pure water outlet of the fine filtration unit (3), and the other end is communicated with a pipeline between the pretreatment unit (1) and the pump (2), and a check valve (10) is disposed on the pure water return branch section.
8. The water purification system of claim 1, further comprising a timing unit for calculating a time interval between two consecutive water productions, wherein the controller is electrically connected to the timing unit for increasing the rotation speed of the pump (2) when the time interval calculated by the timing unit is greater than or equal to a first preset time.
9. The water purification system of claim 8, wherein the controller is further configured to reduce the rotational speed of the pump (2) when the time interval calculated by the timing unit is less than a second predetermined time, wherein the second predetermined time is less than the first predetermined time.
10. Water purification system according to any one of claims 1-5, wherein the pump (2) is a brushless pump.
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| CN202023061879.0U CN214270417U (en) | 2020-12-16 | 2020-12-16 | Water purification system |
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| CN202023061879.0U CN214270417U (en) | 2020-12-16 | 2020-12-16 | Water purification system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112551721A (en) * | 2020-12-16 | 2021-03-26 | 珠海格力电器股份有限公司 | Water purification system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112551721A (en) * | 2020-12-16 | 2021-03-26 | 珠海格力电器股份有限公司 | Water purification system |
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