CN114609947A - Water leakage protection control system and water purifying device - Google Patents
Water leakage protection control system and water purifying device Download PDFInfo
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- CN114609947A CN114609947A CN202210267922.3A CN202210267922A CN114609947A CN 114609947 A CN114609947 A CN 114609947A CN 202210267922 A CN202210267922 A CN 202210267922A CN 114609947 A CN114609947 A CN 114609947A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/21—Pc I-O input output
- G05B2219/21137—Analog to digital conversion, ADC, DAC
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Abstract
The invention relates to water leakage protection and discloses a water leakage protection control system which comprises a water leakage detection device, an intelligent control circuit and an intelligent electric valve, wherein the intelligent control circuit is connected with the intelligent electric valve; the water leakage detection device is electrically connected with the intelligent control circuit so as to obtain a working power supply through the intelligent control circuit, convert the working power supply into a water leakage detection signal and transmit the water leakage detection signal to the intelligent control circuit to form a standard detection signal; the intelligent electric valve comprises an intelligent valve control module and an electric valve, the electric valve is installed on the water supply water circuit, the intelligent valve control module is electrically connected with the electric valve so as to control the opening and closing of the electric valve, the electric valve can be controlled to be closed when the working power supply is powered off, the intelligent control circuit is electrically connected with the intelligent valve control module so as to send a standard control signal to control the closing of the electric valve and maintain the closed state when the water leakage detection device detects water leakage. The water leakage protection control system can provide reliable water leakage protection. In addition, the invention also discloses a water purifying device.
Description
Technical Field
The invention relates to water leakage protection, in particular to a water leakage protection control system. In addition, the invention also relates to a water purifying device.
Background
Along with the improvement of living standard of people, the water quality sanitation of drinking water is more and more concerned, and water purification products also widely enter families of people. The water purification product generally filters a water supply source through a filter element to remove floating substances, heavy metals, bacteria, viruses, residual chlorine, silt, rust, microorganisms and the like in water, thereby providing water purity and sanitation level.
Generally, a certain pressure difference is required for filtering water by the filter element, which requires a certain water supply pressure of a water source, so that the water purification product and the water supply waterway thereof must bear a certain water pressure, and high water pressure easily causes water leakage of the water purification product and the water supply waterway thereof. Although some pressure-resistant and leakage-proof measures are usually adopted for water purification products and water supply waterways, water leakage still happens occasionally, water leakage cannot be treated in time, water waste is caused, and household facilities and household appliances are damaged.
In order to prevent the damage caused by water leakage, a water leakage detection system can be configured for the clean aquatic products, so that alarm information can be sent to remind a user when water leakage occurs, or a valve on a water supply waterway is automatically cut off, and further water leakage is prevented. In the existing water leakage detection system, water leakage is generally sensed by the change of the resistance of a detection probe, and the resistance is a continuously changed analog quantity, so that false triggering is easily caused by pollution of the detection probe or change of environmental humidity. Moreover, the water leakage detection system needs to work under the driving of the power supply, and the water leakage protection cannot be carried out when the power supply is powered off. According to the existing water leakage detection system with the water path cutting function, after a detection probe detects water leakage information and cuts off a water path, water leakage stops, along with the loss and volatilization of water at the detection probe, the water leakage information detected by the detection probe disappears, a water supply water path is opened, a water leakage fault point is not eliminated, and new water leakage is caused.
Disclosure of Invention
The invention aims to provide a water leakage protection control system which is reliable in water leakage detection and can provide stable water leakage protection.
The invention further aims to solve the technical problem of providing a water purifying device which has a more reliable water leakage protection function.
In order to solve the technical problem, the invention provides a water leakage protection control system on one hand, which comprises a water leakage detection device, an intelligent control circuit and an intelligent electric valve; the water leakage detection device is electrically connected with the intelligent control circuit so as to obtain a working power supply through the intelligent control circuit, detect water leakage information, convert the water leakage information into a water leakage detection signal and transmit the water leakage detection signal to the intelligent control circuit to form a standard detection signal; the intelligent electric valve comprises an intelligent valve control module and an electric valve, the electric valve is installed on a water supply water circuit, the intelligent valve control module is electrically connected with the electric valve so as to control the opening and closing of the electric valve and control the closing of the electric valve when the working power supply is powered off, and the intelligent control circuit is electrically connected with the intelligent valve control module so as to send a standard control signal to the intelligent valve control module when the water leakage detection device detects water leakage and control the closing of the electric valve and maintain the closed state.
Preferably, the standard control signal and the standard detection signal are both 5V high level signals or 5V low level signals, and the water leakage detection signal output by the water leakage detection device is divided by the working power supply through a resistor and converted by the comparator to obtain the standard detection signal. In the preferred technical scheme, the 5V high-level signal and the 5V low-level signal are standard power supply and control signals commonly used by a digital circuit, which is beneficial to digital control and improves the stability of a control system.
Further preferably, the water leakage detection device is a detection probe or a detection circuit board. In this preferred technical scheme, detection probe and detection circuit board simple structure set up the convenience, and the detection reliability also can obtain guaranteeing.
Preferably, the intelligent control circuit comprises an MCU chip, the water leakage detection device comprises two detection electrodes, one of the two detection electrodes is connected to the working power supply, and the other electrode is connected to the MCU chip through a voltage dividing resistor. Through the preferred technical scheme, a voltage division circuit can be formed by the two detection electrodes and the voltage division resistor, the change of the analog quantity of the resistor between the two detection electrodes caused by water leakage is converted into the change of the voltage on the voltage division resistor, a standard detection signal is formed in the MCU chip for digital control, and the reliability of water leakage detection is higher.
Preferably, the intelligent valve control module includes a power module, a trigger module and a motor driving module, the power module can convert the working power into a power for driving the electric valve to open and close, the trigger module is electrically connected to the power module and the intelligent control circuit to generate an electric valve action signal according to a standard control signal sent by the intelligent control circuit, and the motor driving module is electrically connected to the power module, the trigger module and the electric valve to generate an electric valve driving power according to the electric valve action signal to drive the electric valve to open and close through the electric valve driving power. Through the preferred technical scheme, the power supply module can convert the working power supply to form a power supply for driving the electric valve to work, and meanwhile, the working power supply is isolated from the driving power supply of the electric valve, so that the electric energy for driving the electric valve to close is reserved when the working power supply is powered off; the trigger module can convert the standard control signal sent by the intelligent control circuit into an electric valve action signal to control the working state of the electric valve, thereby being beneficial to improving the reliability of controlling the electric valve; the motor driving module can provide a digital power supply for driving the electric valve to work, and the working stability and reliability of the electric valve are improved.
Further preferably, the power module comprises a power-off delay power supply, and the power-off delay power supply can supply power for a short time when the working power supply is powered off so as to drive the electric valve to close. In the preferred technical scheme, the power-off delay power supply can be used as an electric valve driving power supply to supply power for a short time when the working power supply is powered off, so as to provide power for driving the electric valve to close.
Further, the triggering module can detect power failure information of the working power supply and send an electric valve action signal to control the electric valve to close according to the power failure information. Through this preferred technical scheme, under the circumstances of working power supply outage, trigger module can detect working power supply's outage information to send the electric valve actuating signal to give motor drive module when detecting working power supply's outage information, drive the motorised valve and close, thereby when making working power supply outage, the motorised valve is in the closed condition certainly, prevents to lead to the protection control system that leaks to produce the guard action that leaks because of working power supply closes.
Preferably, the electrically operated valve includes a first water gap, a valve cavity, a second water gap, a valve core, a sector gear, a pinion, a valve motor and a limit switch, the first water gap and the second water gap are connected to a water supply waterway and are both communicated with the valve cavity, the valve core is installed in the valve cavity and can rotate in the valve cavity to switch on and off of the waterway between the first water gap and the second water gap, the valve motor is electrically connected to the intelligent valve control module, the pinion is installed on the valve motor, the sector gear is installed on the valve core, the pinion is engaged with the sector gear, and the limit switch is installed on a rotation path of the sector gear to control the valve motor to stop rotating continuously when the sector gear rotates to a set angle. Through this preferred technical scheme, can conveniently control the turned angle of case to control motorised valve's open and close state, not only improved control accuracy, can also reduce the wearing and tearing of valve structure, prolong the life of motorised valve.
Preferably, the intelligent control circuit further comprises a wireless communication module, and the wireless communication module can be in signal connection with a wireless control terminal so as to send a standard control signal under the control of the wireless control terminal and control the opening and closing of the electric valve. In this preferred embodiment, the opening and closing of the electric valve can be remotely controlled by the wireless control terminal, and the control of the water supply path is flexible.
The invention provides a water purifying device, which comprises the water leakage protection control system provided by the first aspect of the invention.
Through the technical scheme, the water leakage protection control system provided by the invention can detect water leakage information when a water path leaks by matching the water leakage detection device with the intelligent control circuit, and converts the water leakage information into a standard detection signal, so that the stability and reliability of the detection signal are improved. The intelligent control circuit can carry out digital processing to standard detection signal, output standard control signal controls intelligent motorised valve, when the detection device that leaks detects the information of leaking, close the motorised valve, and keep the closed condition of motorised valve before the circuit resets, control system's interference killing feature is stronger, the reliability is higher, not only can cut off the water supply water route when leaking, prevent that the department that leaks in water route from continuously leaking, cause the damage of flooding, can also prevent that the department that leaks from restoreing before, it leads to the motorised valve to open again to supply water to lead to because of leaking detection device department drying out. The intelligent valve control module can drive the electric valve by a digital power supply, and can close the electric valve when the working power supply is powered off, so that the water leakage of a water circuit in a power-off state is prevented. The water leakage protection control system has higher reliability of water leakage detection, can effectively close the water supply waterway when detecting water leakage or power failure of the working power supply, and prevents the occurrence of flooding accidents.
The water purifier provided by the invention uses the water leakage protection control system, and can provide effective water leakage protection for the water purifier and the water supply waterway thereof.
Other technical features and advantages of the present invention will be further described in the following detailed description.
Drawings
Fig. 1 is a block diagram of an embodiment of a water leakage protection control system according to the present invention;
FIG. 2 is a schematic diagram of a detection probe according to an embodiment of the water leakage protection control system of the present invention;
FIG. 3 is a schematic diagram of a detection circuit board according to an embodiment of the water leakage protection control system of the present invention;
FIG. 4 is a schematic diagram of an intelligent control circuit board of an embodiment of the water leakage protection control system of the present invention;
FIG. 5 is a schematic diagram of a power module in the intelligent valve control module according to an embodiment of the water leakage protection control system of the present invention;
fig. 6 is a schematic diagram of a trigger module in the intelligent valve control module according to an embodiment of the water leakage protection control system of the present invention;
fig. 7 is a schematic diagram of a motor driving module in the intelligent valve control module according to an embodiment of the water leakage protection control system of the present invention;
FIG. 8 is a schematic diagram illustrating an electrically operated valve according to an embodiment of the present invention;
fig. 9 is an exploded view of the components of an electrically operated valve in accordance with one embodiment of the water leakage protection control system of the present invention;
FIG. 10 is a logic diagram of standard detection signal generation for an embodiment of the water leakage protection control system of the present invention;
fig. 11 is a logic diagram of the intelligent electric valve control of one embodiment of the water leakage protection control system of the present invention;
FIG. 12 is a control schematic diagram of an embodiment of the water leakage protection control system of the present invention;
fig. 13 is a schematic diagram of a water circuit of an embodiment of the water purifying device of the present invention.
Description of the reference numerals
1 Water leakage detection device 11 detection probe
111 probe seat 112 probe needle body
12 detection circuit board 121 double-sided copper-clad plate
122 first electrode point 123 second electrode point
124 copper-clad area 1241 water leakage detection area
125 circuit board connecting line 126 circuit board plug
127 circuit board fixed hole 2 intelligent control circuit
3 intelligent electric valve 31 intelligent valve control module
32 electric valve 321 first water gap
322 valve cavity 323 second water gap
324 spool 325 sector gear
326 pinion 327 valve motor
328 limit switch 329 electric valve lead wire
4 water inlet pipe of water purifying device 41
42 outlet pipe 43 concentrated water discharge pipe
5 water mechanism 6 sewer
Detailed Description
In the present invention, unless otherwise specified, the terms of orientation or positional relationship as indicated by "upper and lower" used herein are the ones in which the described device or component is actually used.
In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted" and "connected" are to be interpreted broadly, for example, the term "connected" may be a fixed connection, a detachable connection, or an integral connection; either directly or indirectly through intervening media, either internally or in any combination thereof. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, and it is to be understood that the detailed description is provided for purposes of illustration and explanation and is not intended to limit the scope of the invention.
As shown in fig. 1, an embodiment of the water leakage protection control system of the present invention includes a water leakage detection device 1, an intelligent control circuit 2, and an intelligent electric valve 3. The water leakage detection device 1 may be any of various detection devices capable of sensing water leakage in a water path, and an electrode type water leakage detection device 1 is generally used, which detects whether water leaks in a water path by using the principle that water can cause a resistance value between electrodes to decrease. One or more water leakage detection devices 1 may be provided; the water leakage detection device 1 is usually installed at a position where water leakage is easily reached, and may be installed inside the water purification apparatus or outside the water purification apparatus. When a plurality of water leakage detection devices 1 are arranged, when any water leakage detection device 1 detects a water leakage signal, the water leakage of the water channel can be judged, and thus, the water leakage information with small water leakage amount can be detected as soon as possible. The water leakage detection device 1 is electrically connected with the intelligent control circuit 2, when the electrode type water leakage detection device 1 is used, one detection electrode of the water leakage detection device 1 is connected with a working power supply on the intelligent control circuit 2, and the other electrode is connected with a detection signal input interface of the intelligent control circuit 2. The water leakage detection device 1 can form a water leakage detection signal when contacting with water leaked in the water channel, and transmits the water leakage detection signal to the intelligent control circuit 2, and the water leakage detection signal is processed by the intelligent control circuit 2 to form a standard detection signal. The standard detection signal is a high-low level signal which conforms to EIA specifications, and the specific level value is high or low according to the type of the control circuit and the power supply. The detection signal that will leak converts standard detection signal into not only can improve the reliability and the stability of the testing result that leak, can also make things convenient for intelligent control circuit 2 to handle the detection signal that leaks. The intelligent control circuit 2 can process the standard detection signal and can generate a standard control signal for controlling the opening and closing of the intelligent electric valve 3 according to the standard detection signal, and a schematic diagram of the intelligent control circuit 2 is shown in fig. 4. The intelligent electric valve 3 comprises an intelligent valve control module 31 and an electric valve 32, the electric valve 32 is installed at the inlet side of the water supply waterway, when the electric valve 32 is closed, the whole water supply waterway is cut off, and the water supply of the water purifying device, the water using device and the like is interrupted; when the electric valve 32 is opened, the water supply waterway, the water purifying device and the water using device recover the water supply. The intelligent valve control module 31 is electrically connected with the intelligent control circuit 2 and the electric valve 32, the intelligent valve control module 31 can obtain a working power supply from the intelligent control circuit 2, and can also receive a standard control signal sent by the intelligent control circuit 2, and form a numerical control driving power supply for driving the electric valve 32 to rotate according to the standard control signal to control the opening and closing of the electric valve 32. When the water leakage detection device 1 detects water leakage, a corresponding water leakage detection signal is formed and sent to the intelligent control circuit 2, the intelligent control circuit 2 generates a standard control signal and sends the standard control signal to the intelligent valve control module 31, the intelligent control module 31 controls the electric valve 32 to close, water supply of the water supply waterway is cut off, and flooding caused by continuous water leakage is prevented. Furthermore, before the water leakage is released and the operating power supply is turned off and then powered on again, the electric valve 32 is maintained in a closed state, so that the water in the water leakage detection device 1 is gradually dried after the water leakage is stopped temporarily due to the closing of the electric valve 32, and the electric valve 32 is prevented from being turned on again due to the fact that the water leakage detection device 1 cannot detect the water leakage. In addition, when the power supply of the working power supply is interrupted due to various reasons, the intelligent control module 31 can control the electric valve 32 to close, cut off the water supply of the water supply waterway, and prevent the water supply waterway from leaking when the power supply of the working power supply is interrupted.
In some embodiments of the water leakage protection control system of the present invention, as shown in fig. 4 to 7 and fig. 10 to 12, a +24V dc power supply is used as an operating power supply. The intelligent control circuit 2 converts the water leakage detection signal formed by the water leakage detection device 1 into a standard detection signal, and the standard control signal formed by the intelligent control circuit 2 is a 5V high level signal or a 5V low level signal. Wherein, the level value of the 5V high level signal is between 3.5 and 5V, and the level value of the 5V low level signal is between 0 and 0.25V. The water leakage detection signal output by the water leakage detection device 1 is formed by dividing a 24V working power supply by the water leakage detection device 1 and a divider resistor, and is transmitted to the intelligent control circuit 2, and converted by a comparator to obtain a standard detection signal. When the water leakage detection device 1 does not detect the water leakage information, a 5V low level signal is obtained; when the water leakage detecting device 1 detects the water leakage information, a 5V high level signal is obtained.
As an embodiment of the water leakage protection control system of the present invention, the water leakage detecting device 1 may be a detecting probe 11 as shown in fig. 2. The test probe 11 generally includes an insulative probe base 111 and two conductive probe pins 112, the two probe pins 112 are mounted on the probe base 111 at intervals, and the probe pins 112 have a large resistance or open circuit greater than 500K. When two probe pins 112 contact the leaking water, the resistance between the two drops sharply to a level much less than 500K. Of course, three or more probe needles 112 can be mounted on the probe base 112, and the probe needles 112 are connected to each other at intervals in two groups. The plurality of detection probes 11 may be connected in parallel to each other and used as the water leakage detection device 1. The water leakage detection device 1 can also be a detection circuit board 12 as shown in fig. 3, wherein the detection circuit board 12 includes a double-sided copper-clad plate 121, a circuit board connecting wire 125 and a circuit board plug 126. One side of the double-sided copper-clad plate 121 is provided with a first electrode 122 and a second electrode 123 which are communicated with the two sides. The structure on two sides of two-sided copper-clad plate 121 is shown as part a and part b in fig. 3 respectively, first electrode 122 and second electrode 123 all are connected with copper-clad district 124 on two sides of two-sided copper-clad plate 121, it has insulating green paint to coat on copper-clad district 124, each side of two-sided copper-clad plate 121 all has the leakage detection zone 1241 that is provided with an insulating green paint of not coating on the distal end in the copper-clad district that links to each other with an electrode, it is handled to make heavy gold on the copper-clad face in the leakage detection zone 1241, prevent that the copper material from meeting water corrosion. The double-sided copper-clad plate 121 is further provided with a circuit board fixing hole 127 so as to fix the double-sided copper-clad plate 121 in the water leakage detection area through the circuit board fixing hole 127. The first electrode 122 and the second electrode 123 have a large resistance value larger than 500K or are open-circuited, the detection circuit board 12 is connected with the intelligent control circuit 2 through the circuit board plug 126, and when the leakage water contacts the water leakage detection area 1241 on both sides of the double-sided copper-clad plate 121 or the water leakage detection area 1241 and the other electrode on the same side of the double-sided copper-clad plate 121, the resistance value between the first electrode 122 and the second electrode 123 is sharply reduced to reach a level far smaller than 500K. As shown in fig. 10 and 12, the operating power supply forms a water leakage detection signal with different voltages after voltage division by the inter-electrode resistance and the voltage dividing resistance of the electrodes of the water leakage detection device 1: when no water leaks between the detection electrodes of the water leakage detection device 1, the interelectrode resistance of the electrodes is greater than 500K or is in an open circuit state, and a 24V working power supply is subjected to voltage division by the interelectrode resistance and the voltage division resistance and then converted by a comparator in the intelligent control circuit 2 to obtain a 5V low-level standard detection signal; when water leaks between the detection electrodes of the water leakage detection device 1, the inter-electrode resistance of the electrodes is usually much less than 500K, and after the 24V working power supply is divided by the inter-electrode resistance and the voltage dividing resistance, the voltage is converted by the comparator in the intelligent control circuit 2, so that a 5V high-level standard detection signal is obtained.
In some embodiments of the water leakage protection control system of the present invention, as shown in fig. 4, an MCU chip, i.e., IC1 in fig. 4, is used in the intelligent control circuit 2. The water leakage detection device 1 is provided with two detection electrodes, the two detection electrodes are connected to a CN1 socket in the intelligent control circuit 2 through a plug, one electrode is connected with a 24V working power supply of the intelligent control circuit 2, the other electrode is connected to an LK1 pin of the MCU chip through a resistor R14, and standard detection signals are obtained after voltage division of an internal circuit of the MCU chip and conversion of a comparator.
In some embodiments of the water leakage protection control system of the present invention, as shown in fig. 5 to 7, the intelligent valve control module 31 includes a power supply module, a trigger module, and a motor driving module. As shown in fig. 5, a schematic diagram of a power supply module is that 24V voltage of an operating power supply is filtered by capacitors EC1 and C13-C15, converted into 5V voltage by U3, and output through an inductor L1 and a diode D2 as a power supply for driving an electric valve 32 to open and close. A schematic diagram of a trigger module is shown in fig. 6, a 5V power supply from a power supply module is input to a first pin of an integrated block U1 through a resistor R5, a standard control signal from an intelligent control circuit 2 is input to a 6 th pin of an integrated block U1 through an S1 interface and a resistor R3, the integrated block U1 generates an electric valve action signal according to the standard control signal sent by the intelligent control circuit 2 and outputs the electric valve action signal to a motor driving module through INA and INB interfaces, and a driving power supply for controlling the opening and closing of an electric valve 32 is produced. A schematic diagram of a motor driving module is shown in fig. 7, a 5V power supply from a power supply module is input to a 4 th pin of an integrated block U2, electric valve action signals from interfaces INA and INB of a trigger module are respectively input to a 2 nd pin and a 3 rd pin of an integrated block U2, the integrated block U2 generates a numerical control driving power supply for driving the electric valve 32 to rotate according to the electric valve action signals, and the numerical control driving power supply is output through an 8 th pin and a 5 th pin of an integrated block U2 to drive the electric valve 32 to generate opening and closing actions.
In some embodiments of the water leakage protection control system of the present invention, as shown in fig. 5 and 11, a power-off delay power supply is disposed in the power supply module. The power-off delay power supply generally uses an energy storage device, such as a small-capacity secondary battery, a farad capacitor, etc., which can store energy sufficient to drive the closing of electric valve 32. In the embodiment, the farad capacitor EC2 is used, when the 24V working power supply is powered off, the electric energy stored in the farad capacitor EC2 can be normally supplied to the 5V power supply within a certain time, so that the normal operation of the trigger module and the motor driving module is ensured, and at the moment, the 24V working power supply does not have electric energy supply, and the trigger module can generate an electric valve action signal to timely drive the electric valve 32 to close according to the power-off information of the 24V working power supply, so that the water supply of the water supply waterway is cut off.
As a specific embodiment of the water leakage protection control system of the present invention, as shown in fig. 11 and 12, when the working power supply is powered off due to various reasons, the 24V working power supply is powered off, and the 5V power supply in the intelligent valve control module 31 is normally powered on in a short time under the support of the power-off delay power supply. At this time, the standard control signal output interface of the intelligent control circuit 2 outputs a level of 0 due to the interruption of power supply, and the level of 0 belongs to the 5V low level standard signal, so that the trigger module can detect the 5V low level standard signal formed by the interruption of the 24V working power supply through the interface S1, and generate a valve action signal to control the closing of the electric valve.
In some embodiments of the water leakage protection control system of the present invention, as shown in fig. 8 and 9, the electric valve 32 includes a first water port 321, a valve chamber 322, a second water port 323, a valve core 324, a sector gear 325, a pinion 326, a valve motor 327, and a limit switch 328. The electric valve 32 is connected in a water supply waterway through a first water gap 321 and a second water gap 323, the first water gap 321 and the second water gap 323 are both communicated with the valve cavity 322, the valve core 324 is installed in the valve cavity 322 and can rotate in the valve cavity 322, and when the valve core 324 rotates to a first angle in the valve cavity 322, the waterway between the first water gap 321 and the second water gap 323 can be communicated; when the valve core 324 rotates to a second angle in the valve cavity 322, the water path between the first water gap 321 and the second water gap 323 is cut off. Therefore, by controlling the rotation angle of the valve core 324 in the valve cavity 322, the opening and closing of the water path between the first water port 321 and the second water port 323, that is, the opening and closing of the electric valve 32, can be controlled. The valve motor 327 is electrically connected to the intelligent valve control module 31 through the electric valve lead 329, and specifically, the valve motor 327 is connected to the CON2 interface in the motor drive module through an electric wire in the electric valve lead 329, so that the rotation of the valve motor 327 can be controlled by the numerical control drive power output by the motor drive module. The pinion 326 is mounted on the rotating shaft of the valve motor 327, the sector gear 325 is mounted on the rotating shaft of the valve core 324, and the pinion 326 is meshed with the sector gear 325, so that when the valve motor 327 rotates, the pinion 326 is driven to rotate, and the driving valve core 324 is driven to rotate in the valve cavity 322 through the meshing between the pinion 326 and the sector gear 325, thereby controlling the on-off of the electric valve 32. The limit switch 328 is installed on the rotation path of the sector gear 325, when the sector gear 325 rotates the position of the limit switch 328, the limit switch 328 can be triggered, the limit switch 328 is connected to the CON1 interface in the trigger module through the electric wire in the electric valve lead 329, and when the limit switch 328 is triggered, the trigger module does not send the electric valve action signal any more, so that the valve motor 327 stops rotating continuously. Generally, two limit switches 328 are disposed in the electric valve 32, and the two limit switches 328 are respectively installed on the rotation paths of both sides of the sector gear 325, relative to the positions when the valve core 324 rotates in the valve cavity 322 by the first angle and the second angle, so that the valve core 324 can be accurately stopped at the position where the electric valve 32 is opened or closed.
In some embodiments of the water leakage protection control system of the present invention, the intelligent control circuit 2 further includes a wireless communication module. The wireless communication module can establish signal connection with the wireless control terminal, so that the intelligent control circuit 2 can be controlled by sending signals at the wireless control terminal. The wireless control terminal can be an intelligent terminal such as a remote computer, a mobile phone and a tablet. For example, a mobile phone APP can be connected to the wireless communication module, and the intelligent control circuit 2 can also generate a standard control signal according to a mobile phone APP signal received by the wireless communication module to control the opening and closing of the electric valve 32.
The operation principle of a preferred embodiment of the water leakage protection control system of the present invention is shown in fig. 12, the water leakage detection device 1 is installed at a position where water leakage of the water purification and utilization device is easily detected, when a detection probe of the water leakage detection device 1 does not contact with the water leakage, the resistance value between the probes is above 500K or is open circuit, a water leakage detection signal formed by a 24V working power source acting on the probe of the water leakage detection device 1 is transmitted to the intelligent control circuit 2 on the intelligent control board, the intelligent control circuit 2 divides the water leakage detection signal by a voltage dividing resistor, a 5V low level standard detection signal is formed after conversion by a comparator and transmitted to the control chip, the control chip generates a 5V high level standard control signal to the intelligent electric valve 3 after receiving the 5V low level standard detection signal, the intelligent valve control module 31 in the intelligent electric valve 3 controls the electric valve 32 to open after receiving the 5V high level standard control signal, the water supply waterway can supply water normally. When the detection probe of the water leakage detection device 1 contacts leakage water, the resistance value between the probes is reduced to be below 500K and is usually far lower than 500K, a water leakage detection signal formed by the 24V working power supply acting on the probes of the water leakage detection device 1 is transmitted to the intelligent control circuit 2 on the intelligent control board, the intelligent control circuit 2 divides the water leakage detection signal through a divider resistor, a 5V high-level standard detection signal is formed after conversion of the comparator and is transmitted to the control chip, the control chip generates a 5V low-level standard control signal to the intelligent electric valve 3 after receiving the 5V high-level standard detection signal, the intelligent valve control module 31 in the intelligent electric valve 3 controls the electric valve 32 to close after receiving the 5V low-level standard control signal, and water supply of a water supply waterway is cut off. And after the control chip receives the 5V high-level standard detection signal, the control chip keeps in a state of outputting the 5V low-level standard control signal until the working power supply is powered off and is powered on again, namely the intelligent electric valve 3 keeps in a valve closing state, so that the water supply waterway is ensured to be repaired, the water supply of the water supply waterway is not recovered before the water leakage is relieved, and the phenomenon that the water leakage detection device 1 cannot detect the water leakage due to the valve closing and the valve is opened by mistake is avoided. When the 24V working power supply is powered off, the control chip in the intelligent control circuit 2 is powered off, the output end level of the control chip is reduced to 0, that is, a 5V low level standard control signal is output, the intelligent valve control module 31 in the intelligent electric valve 3 ensures short-time power supply of the 5V power supply under the support of the power-off delay power supply, at the moment, the intelligent valve control module 31 can receive the 5V low level standard control signal output by the intelligent control circuit 2 and form a numerical control driving power supply for driving the electric valve 32 to be closed, the electric valve 32 is controlled to be closed, and the water leakage protection control system can not provide protection for water leakage of a water supply waterway due to power-off of the working power supply.
Fig. 13 shows an embodiment of the water purifying apparatus of the present invention, in which a water inlet pipe 41 of the water purifying apparatus 4 is connected to a tap water supply pipe, a water outlet pipe 42 is connected to the water using mechanism 5, a concentrated water discharge pipe 43 is connected to the water outlet 6, tap water in the tap water supply pipe enters the water purifying apparatus 4 through the water inlet pipe 41, purified water purified by the water purifying apparatus 4 is delivered to the water using mechanism 5 through the water outlet pipe 42 for use by a user, and concentrated water generated by the water purifying apparatus 4 is delivered to the water outlet 6 through the concentrated water discharge pipe 43 to be discharged. The water purifier 4 uses the water leakage protection control system of any embodiment of the invention, the intelligent electric valve 3 of the water leakage protection control system is installed between the tap water supply pipe and the water inlet pipe 41, the water leakage detection device 1 can be arranged inside the water purifier 4, or can be arranged in the water supply waterway outside the water purifier 4, or can be arranged at the position where the water leakage is easily generated in the water supply waterway of the water mechanism, or can be simultaneously arranged inside and outside the water purifier 4 with a plurality of water leakage detection devices 1. The intelligent control circuit 2 is usually arranged in the water purifying device 4, can be arranged as an independent intelligent control panel, and can also be integrated with other control circuits in the water purifying device 4 to realize the functions of filter element monitoring, alarming and the like of the water purifying device 4. Therefore, the water purifier 4 can detect the leakage condition of the water supply waterway inside and/or outside the water purifier, and shut off the water supply source when detecting the water leakage of the water purifier, thereby realizing the water leakage protection of the water purifier.
In the description of the present invention, reference to the description of "one embodiment," "some embodiments," "a specific implementation," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In the present disclosure, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, simple modifications may be made to the technical solution of the invention, including combinations of the individual specific technical features in any suitable manner. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.
Claims (10)
1. A water leakage protection control system is characterized by comprising a water leakage detection device (1), an intelligent control circuit (2) and an intelligent electric valve (3); the water leakage detection device (1) is electrically connected with the intelligent control circuit (2) so as to obtain a working power supply through the intelligent control circuit (2), detect water leakage information, convert the water leakage information into a water leakage detection signal and transmit the water leakage detection signal to the intelligent control circuit (2) to form a standard detection signal; the intelligent electric valve (3) comprises an intelligent valve control module (31) and an electric valve (32), the electric valve (32) is installed on a water supply water circuit, the intelligent valve control module (31) is electrically connected with the electric valve (32) so as to be capable of controlling the opening and closing of the electric valve (32) and controlling the electric valve (32) to be closed when the working power supply is powered off, and the intelligent control circuit (2) is electrically connected with the intelligent valve control module (31) so as to be capable of sending a standard control signal to the intelligent valve control module (31) when the water leakage detection device (1) detects water leakage, controlling the electric valve (32) to be closed and maintaining a closed state.
2. The water leakage protection control system according to claim 1, wherein the standard control signal and the standard detection signal are both 5V high level signals or 5V low level signals, and the water leakage detection signal output by the water leakage detection device (1) is divided by the working power supply through resistors and converted by the comparator to obtain the standard detection signal.
3. The water leakage protection control system according to claim 2, wherein the water leakage detecting device (1) is a detecting probe or a detecting circuit board.
4. The water leakage protection control system according to claim 1, wherein the intelligent control circuit (2) comprises an MCU chip, and the water leakage detection device (1) comprises two detection electrodes, one of which is connected to the working power supply, and the other of which is connected to the MCU chip through a voltage dividing resistor.
5. The water leakage protection control system according to any one of claims 1-4, wherein the intelligent valve control module (31) comprises a power supply module, a trigger module and a motor driving module, the power supply module can convert the working power supply into a power supply for driving the electric valve (32) to open and close, the trigger module is electrically connected with the power supply module and the intelligent control circuit (2) so as to generate an electric valve action signal according to a standard control signal sent by the intelligent control circuit (2), and the motor driving module is electrically connected with the power supply module, the trigger module and the electric valve (32) so as to generate an electric valve driving power supply according to the electric valve action signal so as to drive the electric valve (32) to open and close through the electric valve driving power supply.
6. The leakage protection control system of claim 5, wherein said power supply module comprises a power-off delay power supply, said power-off delay power supply can supply power for a short time when said working power supply is powered off, so as to drive said electric valve (32) to close.
7. The water leakage protection control system according to claim 6, wherein the triggering module is capable of detecting power failure information of the working power supply and sending an electric valve action signal to control the electric valve (32) to close according to the power failure information.
8. The water leakage protection control system according to any one of claims 1-4, wherein the electric valve (32) comprises a first water gap (321), a valve cavity (322), a second water gap (323), a valve core (324), a sector gear (325), a pinion (326), a valve motor (327) and a limit switch (328), the first water gap (321) and the second water gap (323) are connected with a water supply waterway and are communicated with the valve cavity (322), the valve core (324) is installed in the valve cavity (322) and can rotate in the valve cavity (322) to switch the waterway between the first water gap (321) and the second water gap (323), the valve motor (327) is electrically connected with the intelligent valve control module (31), the pinion (326) is installed on the valve motor (327), and the sector gear (325) is installed on the valve core (324), the pinion (326) is engaged with the sector gear (325), and the limit switch (328) is installed on a rotation path of the sector gear (325) to control the valve motor (327) to stop further rotation when the sector gear (325) rotates to a set angle.
9. The water leakage protection control system according to any one of claims 1-4, wherein the intelligent control circuit (2) further comprises a wireless communication module, and the wireless communication module is capable of being in signal connection with a wireless control terminal so as to be capable of sending a standard control signal under the control of the wireless control terminal to control the opening and closing of the electric valve (32).
10. A water purification apparatus, comprising the water leakage protection control system of any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210267922.3A CN114609947A (en) | 2022-03-17 | 2022-03-17 | Water leakage protection control system and water purifying device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210267922.3A CN114609947A (en) | 2022-03-17 | 2022-03-17 | Water leakage protection control system and water purifying device |
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