CN117111532B - Control circuit, PCB board and purifier of purifier - Google Patents
Control circuit, PCB board and purifier of purifier Download PDFInfo
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- CN117111532B CN117111532B CN202311304239.3A CN202311304239A CN117111532B CN 117111532 B CN117111532 B CN 117111532B CN 202311304239 A CN202311304239 A CN 202311304239A CN 117111532 B CN117111532 B CN 117111532B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 179
- 238000001514 detection method Methods 0.000 claims abstract description 46
- 230000000087 stabilizing effect Effects 0.000 claims description 46
- 230000005669 field effect Effects 0.000 claims description 34
- 239000003990 capacitor Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 101150037009 pin1 gene Proteins 0.000 description 4
- 239000003651 drinking water Substances 0.000 description 3
- 235000020188 drinking water Nutrition 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 3
- 101100520142 Caenorhabditis elegans pin-2 gene Proteins 0.000 description 2
- 101100244014 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) ppi-5 gene Proteins 0.000 description 2
- 101150023294 PIN4 gene Proteins 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
-
- 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
- G05B2219/24—Pc safety
- G05B2219/24215—Scada supervisory control and data acquisition
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The application discloses a control circuit of a water purifier, a PCB (printed circuit board) and the water purifier, wherein the control circuit comprises a power supply unit, and a control unit, a recognition unit, a detection unit and a signal output unit which are respectively and electrically connected with the power supply unit, and the recognition unit, the detection unit and the signal output unit are respectively and electrically connected with the control unit; the power supply unit is used for providing stable working voltage, the identification unit is used for identifying NFC signals of the filter element and feeding the NFC signals back to the control unit, the detection unit is used for collecting working states of the water purifier and feeding the working states back to the control unit, and the signal output unit is used for adjusting the working states of the water purifier according to control signals output by the control unit; the control circuit disclosed by the application comprises the identification unit for identifying the NFC signal of the filter element, and when the identified NFC signal is consistent with a preset NFC signal, the control unit starts to work normally, so that the filter element is ensured to be matched with the water purifier, and the stability of the water purifier during work is improved.
Description
Technical Field
The invention relates to the technical field of drinking water equipment, in particular to a control circuit of a water purifier, a PCB and the water purifier.
Background
The water purifier is a relatively common drinking water device in the life of people, combines the functions of water purification, drinking water and heating/refrigerating, is very convenient to use and is more and more popular with people.
The water purifier generally comprises a raw water tank, a pure water tank and a filter element, wherein a water source of the raw water tank is filtered by the filter element and then is output to the pure water tank, and the pure water tank is heated according to a heating temperature selected by a user and can be directly drunk by the user; in order to ensure the filter effect of the filter element on the water source in the original water tank, a regular filter element is needed, and the existing partial users can select the filter element of a non-original manufacturer for reducing maintenance cost, so that the problems of mismatching installation and poor filter effect exist, the use experience of the users is reduced, the internal devices of the water purifier can be damaged, and the service life of the water purifier is reduced.
It can be seen that there is a need for improvements and improvements in the art.
Disclosure of Invention
In view of the shortcomings of the prior art, the invention aims to provide a control circuit of a water purifier, which can ensure that a filter element is matched with the water purifier and improve the stability and safety of the water purifier during operation.
In order to achieve the above purpose, the invention adopts the following technical scheme:
The control circuit of the water purifier comprises a power supply unit, a control unit, an identification unit, a detection unit and a signal output unit, wherein the control unit, the identification unit, the detection unit and the signal output unit are respectively and electrically connected with the power supply unit; the power supply unit is used for providing stable working voltage, the identification unit is used for identifying NFC signals of the filter element and feeding the NFC signals back to the control unit, the detection unit is used for collecting working states of the water purifier and feeding the working states back to the control unit, and the signal output unit is used for adjusting the working states of the water purifier according to control signals output by the control unit.
The control circuit of the water purifier further comprises a wireless communication unit and a display unit, wherein the wireless communication unit is respectively and electrically connected with the control unit and the power supply unit, and the wireless communication unit is used for realizing wireless communication between the water purifier and a mobile terminal of a user; the display unit is respectively and electrically connected with the control unit and the power supply unit, and is used for displaying the real-time working state of the water purifier.
In the control circuit of the water purifier, the power supply unit comprises an anti-interference part, a first voltage stabilizing part, a constant voltage part, a second voltage stabilizing part, a third voltage stabilizing part, a first voltage reducing part, a second voltage reducing part and a zero-crossing protection part, wherein the input end of the anti-interference part is used for being connected with an external power supply, the output end of the anti-interference part is connected with the input end of the constant voltage part, the first voltage stabilizing part is connected with the feedback end of the constant voltage part, the input end of the second voltage stabilizing part is connected with the output end of the constant voltage part, the output end of the second voltage stabilizing part is connected with the input end of the third voltage stabilizing part, and the output end of the third voltage stabilizing part is connected with the control unit; the output end of the second voltage stabilizing part is also connected with the input end of the first voltage reducing part, the output end of the first voltage reducing part is connected with the input end of the second voltage reducing part, and the output end of the first voltage reducing part and the output end of the second voltage reducing part are used for providing stable working voltage; the input end of the zero-crossing protection part is connected with the detection end of the third voltage stabilizing part, and the output end of the zero-crossing protection part is connected with the control unit.
The control circuit of the water purifier, the detection unit comprises a water temperature detection part, a water tank detection part, a water level detection part and a water quality detection part which are respectively electrically connected with the control unit, wherein the water temperature detection part is used for detecting the water outlet temperature and the water inlet temperature of the water purifier, the water tank detection part is used for detecting the placement position of a pure water tank of the water purifier, the water level detection part is used for detecting the water level in the pure water tank and the water level in a raw water tank, and the water quality detection part is used for detecting the pure water quality in the pure water tank and the raw water quality in the raw water tank.
In the control circuit of the water purifier, the signal output unit comprises a first output part, a second output part and a third output part which are respectively and electrically connected with the control unit, wherein the first output part is used for adjusting the working state of the electromagnetic valve, the second output part is used for adjusting the working state of the booster pump, and the third output part is used for adjusting the working state of the water pump.
In the control circuit of the water purifier, the control unit comprises a fifth control chip U5, an alarm part and an anti-surge part, wherein the alarm part, the anti-surge part, the power supply unit, the identification unit, the detection unit and the signal output unit are respectively and electrically connected with the fifth control chip U5, the alarm part is used for realizing the working alarm of the water purifier, and the anti-surge part is used for improving the stability of the control unit during working.
In the control circuit of the water purifier, the identification unit comprises a fifth triode Q5, a sixth triode Q6, a sixth connector CN6, a seventh field effect transistor Q7 and an eighth triode Q8; the collector of the fifth triode Q5 is respectively connected with the pin 11 of the fifth control chip U5 and the power supply unit, and the emitter of the fifth triode Q5 is respectively connected with the pin 2 of the sixth connector CN6 and the power supply unit; the emitter of the sixth triode Q6 is respectively connected with the pin 12 of the fifth control chip U5 and the power supply unit, and the collector of the sixth triode Q6 is respectively connected with the pin 3 of the sixth connector CN6 and the power supply unit; the base electrode of the fifth triode Q5 and the base electrode of the sixth triode Q6 are respectively connected with the power supply unit; the pin 4 of the sixth connector CN6 is connected to the drain of the seventh field effect transistor Q7, the source of the seventh field effect transistor Q7 is connected to the power supply unit and the gate of the seventh field effect transistor Q7, the gate of the seventh field effect transistor Q7 is further connected to the collector of the eighth triode Q8, the base of the eighth triode Q8 is configured to receive the NFC signal, and the emitter of the eighth triode Q8 and the pin 1 of the sixth connector CN6 are grounded respectively.
In the control circuit of the water purifier, the anti-surge part comprises a third connector CN3, a fourth field effect transistor Q4, a fifth diode D5, a fifth connector CN5, a first control chip U1, a twelfth connector CN12 and a controllable silicon TR1; the third connector CN3 is connected with the twelfth connector CN 12; the pin1 of the third connector CN3 is connected with the cathode of the fifth diode D5, the pin2 of the third connector CN3 is connected with the anode of the fifth diode D5, the anode of the fifth diode D5 is also connected with the drain of the fourth field effect transistor Q4, the gate of the fourth field effect transistor Q4 is connected with the pin4 of the fifth control chip U5, and the source of the fourth field effect transistor Q4 is grounded; the pin1 and the pin3 of the fifth connector CN5 are respectively connected with the pin 6 and the pin4 of the first control chip U1 correspondingly, the pin2 of the first control chip U1 is connected with the pin 6 of the fifth control chip U5, and the pin1 of the first control chip U1 is grounded; pin3 of the twelfth connector CN12 is connected with the G level of the thyristor TR1, and pin1 of the twelfth connector CN12 is connected with the T1 pin of the thyristor TR 1.
The invention also correspondingly provides a PCB which is characterized in that the control circuit of the water purifier is printed on the PCB.
The invention also correspondingly provides a water purifier which comprises an electric control assembly, wherein the electric control assembly comprises the PCB.
The beneficial effects are that:
The invention provides a control circuit of a water purifier, which comprises an identification unit for identifying NFC signals of a filter element, wherein when the NFC signals fed back by the identification unit are consistent with NFC signals preset in the control unit, the control unit starts to acquire detection signals of the detection unit and outputs control signals to a signal output unit according to the detection signals so as to adjust the working state of the water purifier; the identification unit is arranged, so that the filter element can be ensured to be produced by the original manufacturer, the filter element is matched with the water purifier, and the stability and the safety of the water purifier during working are improved.
Drawings
FIG. 1 is a circuit block diagram of a control circuit of a water purifier provided by the invention;
FIG. 2 is a circuit configuration diagram of an anti-interference part, a first voltage stabilizing part, a constant voltage part, a second voltage stabilizing part and a third voltage stabilizing part provided by the invention;
FIG. 3 is a circuit configuration diagram of a first voltage stabilizing section and a second voltage stabilizing section according to the present invention;
fig. 4 is a circuit configuration diagram of a control unit, a zero-crossing protection part and a display unit provided by the present invention;
fig. 5 is a circuit diagram of a wireless communication unit according to the present invention;
FIG. 6 is a circuit diagram of an identification cell provided by the present invention;
FIG. 7 is a circuit configuration diagram of a detection unit according to the present invention;
fig. 8 is a circuit configuration diagram of a signal output unit provided by the present invention;
fig. 9 is a circuit configuration diagram of an anti-surge portion provided by the present invention.
Description of main reference numerals: 1-power supply unit, 11-anti-interference portion, 12-first voltage stabilizing portion, 13-constant voltage portion, 14-second voltage stabilizing portion, 15-third voltage stabilizing portion, 16-first voltage reducing portion, 17-second voltage reducing portion, 18-zero crossing protection portion, 2-control unit, 21-alarm portion, 22-anti-surge portion, 3-identification unit, 4-detection unit, 41-water temperature detection portion, 42-water tank detection portion, 43-water level detection portion, 44-water quality detection portion, 5-signal output unit, 51-first output portion, 52-second output portion, 53-third output portion, 6-wireless communication unit, 7-display unit.
Detailed Description
The invention provides a control circuit of a water purifier, a PCB and the water purifier, and the invention is further described in detail below with reference to the accompanying drawings and the embodiments in order to make the purposes, the technical schemes and the effects of the invention clearer and more definite.
In the description of the present invention, it should be understood that the terms "mounted," "connected," and the like should be construed broadly, and that the specific meaning of the terms in the present invention may be understood by those skilled in the art according to the specific circumstances.
Referring to fig. 1 to 9, the present invention provides a control circuit of a water purifier, which includes a power supply unit 1, and a control unit 2, an identification unit 3, a detection unit 4 and a signal output unit 5 electrically connected with the power supply unit 1, wherein the identification unit 3, the detection unit 4 and the signal output unit 5 are electrically connected with the control unit 2; the power supply unit 1 is used for providing stable working voltage, the identification unit 3 is used for identifying NFC signals of the filter element and feeding back the NFC signals to the control unit 2, the detection unit 4 is used for collecting working states of the water purifier and feeding back the working states of the water purifier to the control unit 2, and the signal output unit 5 is used for adjusting the working states of the water purifier according to control signals output by the control unit 2.
The application discloses a control circuit of a water purifier, which comprises an identification unit 3 for identifying NFC signals of a filter element, wherein when the NFC signals fed back by the identification unit 3 are consistent with NFC signals preset in a control unit 2, the control unit 2 starts to acquire detection signals of a detection unit 4 and outputs control signals to a signal output unit 5 according to the detection signals so as to adjust the working state of the water purifier; the identification unit 3 is arranged, so that the filter element can be ensured to be produced by an original manufacturer, the filter element is matched with the water purifier, the consistency of the filter element and the water purifier is maintained, and the stability and the safety of the water purifier during working are improved.
In this embodiment, referring to fig. 6, the identifying unit 3 includes a fifth transistor Q5, a sixth transistor Q6, a sixth connector CN6, a seventh field effect transistor Q7, and an eighth transistor Q8; the collector of the fifth triode Q5 is respectively connected with the pin 11 of the fifth control chip U5 and the 5V voltage provided by the power supply unit 1, and the emitter of the fifth triode Q5 is respectively connected with the pin 2 of the sixth connector CN6 and the 3.3V voltage provided by the power supply unit 1; the emitter of the sixth triode Q6 is connected with the pin 12 of the fifth control chip U5 and the 5V voltage provided by the power supply unit 1, and the collector of the sixth triode Q6 is connected with the pin 3 of the sixth connector CN6 and the 3.3V voltage provided by the power supply unit 1; the base electrode of the fifth triode Q5 and the base electrode of the sixth triode Q6 are respectively connected with 3.3V voltage provided by the power supply unit 1; the pin 4 of the sixth connector CN6 is connected to the drain of the seventh field effect transistor Q7, the source of the seventh field effect transistor Q7 is connected to the 3.3V voltage provided by the power supply unit 1 and the gate of the seventh field effect transistor Q7, the gate of the seventh field effect transistor Q7 is further connected to the collector of the eighth triode Q8, the base of the eighth triode Q8 is configured to receive the NFC signal, and the emitter of the eighth triode Q8 and the pin 1 of the sixth connector CN6 are respectively grounded.
Further, referring to fig. 1 and fig. 2 to 5, the control circuit of the water purifier further includes a wireless communication unit 6, the wireless communication unit 6 is electrically connected to the control unit 2 and the power supply unit 1, respectively, and the wireless communication unit 6 is used for implementing wireless communication between the water purifier and a mobile terminal of a user.
In this embodiment, through setting up wireless communication unit 6, can realize the networking of purifier, user's accessible removes the end, like cell-phone APP etc. realizes the understanding of the relevant detected signal of purifier, if can look over the water tank water level of the pure water tank of purifier or look over the water tank water level of the former water tank of purifier.
In this embodiment, referring to fig. 5, the wireless communication unit 6 includes a sixth control chip U6, an eleventh triode Q11, and a twelfth triode Q12, wherein an emitter of the eleventh triode Q11 is connected to a pin 16 of the sixth control chip U6 and 3.3V provided by the power supply unit 1, and a collector of the eleventh triode Q11 is connected to a pin 25 of the fifth control chip U5 and 5V provided by the power supply unit 1, respectively; the collector of the twelfth triode Q12 is respectively connected with the pin 15 of the sixth control chip U6 and the 3.3V voltage provided by the power supply unit 1, and the emitter of the twelfth triode Q12 is respectively connected with the pin 26 of the fifth control chip U5 and the 5V voltage provided by the power supply unit 1; the base electrode of the eleventh triode Q11 and the base electrode of the twelfth triode Q12 are respectively connected with 3.3V voltage provided by the power supply unit 1; the model of the sixth control chip U6 is WBR3.
Further, referring to fig. 1 and 4, the control circuit of the water purifier further includes a display unit 7, the display unit 7 is electrically connected to the control unit 2 and the power supply unit 1, respectively, and the display unit 7 is configured to display a real-time working state of the water purifier.
In this embodiment, by providing the display unit 7, the operation state and the operation condition of the water purifier, such as the service life condition, the temperature adjustment condition, the water level adjustment condition, the water quality detection condition, etc., of the filter element can be displayed.
In this embodiment, the display unit 7 includes a twelfth connector CN12, the pin 1 of the twelfth connector CN12 is connected to the 5V supply voltage and the pin 22 of the fifth control chip U5, the pin 2 of the second connector CN12 is connected to the 5V supply voltage and the pin 24 of the fifth control chip U5, the pin 1 of the twelfth connector CN12 is connected to the 5V supply voltage, the pin 3 of the second connector CN12 is grounded, and the second connector CN12 is electrically connected to an existing display board to output a display signal to the display board, where the display board is used to control the display state of the touch screen to correspondingly display the working state of the water purifier.
Further, referring to fig. 1 to 3, the power supply unit 1 includes an anti-interference unit 11, a first voltage stabilizing unit 12, a constant voltage unit 13, a second voltage stabilizing unit 14, a third voltage stabilizing unit 15, a first voltage reducing unit 16, and a second voltage reducing unit 17, wherein an input end of the anti-interference unit 11 is used for connecting an external power source, an output end of the anti-interference unit 11 is connected with an input end of the constant voltage unit 13, the first voltage stabilizing unit 12 is connected with a feedback end of the constant voltage unit 13, an input end of the second voltage stabilizing unit 14 is connected with an output end of the constant voltage unit 13, an output end of the second voltage stabilizing unit 14 is connected with an input end of the third voltage stabilizing unit 15, and an output end of the third voltage stabilizing unit 15 is connected with the control unit 2; the output end of the second voltage stabilizing portion 14 is further connected to the input end of the first voltage reducing portion 16, the output end of the first voltage reducing portion 16 is connected to the input end of the second voltage reducing portion 17, and the output end of the first voltage reducing portion 16 and the output end of the second voltage reducing portion 17 are used for providing stable working voltage.
In this embodiment, referring to fig. 2, the anti-interference unit 11 includes a first exciting coil LF1, a second exciting coil LF2, and a rectifier bridge BD1, where a pin 4 and a pin 1 of the first exciting coil LF1 are respectively used for connecting an external power source, a pin 2 and a pin 3 of the first exciting coil LF1 are respectively connected with a pin 1 and a pin 4 of the second exciting coil LF2, a pin 3 and a pin 2 of the second exciting coil LF2 are respectively connected with a pin 3 and a pin 2 of the rectifier bridge BD1, and a pin 1 of the rectifier bridge BD1 is connected with the constant voltage unit 13.
In this embodiment, referring to fig. 2, the constant voltage portion 13 includes a fourth control chip U4, a first energy storage capacitor EC1, and a primary side of the first transformer T1; the output end of the anti-interference part 11 is connected with the positive electrode of the first energy storage capacitor EC1 and the pin 1 on one side of the first transformer T1, and the negative electrode of the first energy storage capacitor EC1 is grounded; the output end of the anti-interference part 11 is also connected with the pin 2 of the fourth control chip U4 through an eighth resistor R8 and a ninth resistor R9 which are connected in series; the pin 1 of the fourth control chip U4 is connected to the pin 4 of the primary side of the first transformer T1 through a sixth diode D6, and the pin 5 of the primary side of the first transformer T1 is connected to the pin 3 of the fourth control chip U4 through a seventh diode D7; the pin 6 of the fourth control chip U4 is connected to the first voltage stabilizing portion 12, and the primary side of the first transformer T1 is inductively connected to the second voltage stabilizing portion; the model of the fourth control chip U4 is LN9T39.
In this embodiment, referring to fig. 2, the first voltage stabilizing portion 12 includes a second control chip U2, a third control chip U3, a first diode D1, and a twenty-fourth resistor R24; the pin 4 of the second control chip U2 is connected with the pin 6 of the fourth control chip U4, and the pin 3 of the second control chip is connected with the pin 6 of the fourth control chip U4 through the first diode D1; the pin 1 of the second control chip U2 is used as an output end of a 24V supply voltage, the pin 2 of the second control chip U2 is connected with the pin 2 of the third control chip U3, the pin 3 of the third control chip U3 is connected with one end of the twenty-fourth resistor R24, and the other ends of the pin 1 of the third control chip U3 and the twenty-fourth resistor R24 are respectively grounded; the model of the second control chip U2 is LTV-817-TA-C, and the model of the third control chip U3 is KA000Q431.
In this embodiment, referring to fig. 2, the second voltage stabilizing portion 14 includes a secondary side of the first transformer T1, a filter group, and a ninth diode D9, where a pin 8 on the secondary side of the first transformer T1 is used as an output end of the 24V supply voltage and is connected to an anode of the filter group; the pin 6 of the first transformer T1 is connected to the pin 2 of the ninth diode D9 and the input end of the third voltage stabilizing unit 15, the pin 1 and the pin 3 of the ninth diode D9 are connected to the negative pole of the filter group, and the negative pole of the filter group is grounded; the filter bank includes a plurality of filter capacitors connected in parallel.
In this embodiment, referring to fig. 2, the third voltage stabilizing portion 15 includes an eighth diode D8, a tenth diode D10, a fourth filter capacitor EC4, an eighth capacitor C8, and a fourteenth resistor R14, wherein a positive electrode of the eighth diode D8 is connected to the pin 6 of the second side of the first transformer and the pin 2 of the ninth diode D9, a negative electrode of the eighth diode D8 is connected to the positive electrode of the fourth filter capacitor EC4, one end of the eighth capacitor C8, the positive electrode of the twelfth diode D10, and one end of the fourteenth resistor R14, a negative electrode of the fourth filter capacitor EC4 and the other end of the eighth capacitor C8 are grounded, and the other end of the fourteenth resistor R14 is connected to the pin 13 of the fifth control chip U5.
In this embodiment, referring to fig. 3, the first voltage reducing portion 16 includes a seventh control chip U7, a pin 1 of the seventh control chip U7 is connected to an output end of the second voltage stabilizing portion 14, and a pin 4 and a pin 5 of the seventh control chip U7 are used for providing a 5V supply voltage; the first step-down part 16 is a DC-DC conversion circuit, and is configured to convert an input voltage of 24V into an output voltage of 5V, and the model number of the seventh control chip U7 is XL2576S-5.0E1.
In this embodiment, referring to fig. 3, the second voltage reducing portion 17 includes a ninth control chip U9, a pin 1 of the ninth control chip U9 is connected to an output end of the first voltage reducing portion 16, and a pin 2 of the ninth control chip U9 is used for providing a 3.3V supply voltage; the second step-down unit 17 is an LDO circuit, and is configured to convert the 5V input voltage into 3.3V and output, and the model of the ninth control chip U9 is LD1117AG-3.3V.
Further, referring to fig. 1, 2 and 4, the power supply unit 1 further includes a zero-crossing protection unit 18, an input end of the zero-crossing protection unit 18 is connected to the detection end of the third voltage stabilizing unit 15, and an output end of the zero-crossing protection unit 18 is connected to the control unit 2.
In this embodiment, referring to fig. 4, the zero-crossing protection portion 18 includes an eighth control chip U8, a pin 4 of the eighth control chip U8 is connected to an output end of the third voltage stabilizing portion 15 and a pin 14 of the fifth control chip U5, a pin 1 of the eighth control chip U8 is used for receiving a switching signal of a temperature control switch of the water purifier, and a pin 2 of the eighth control chip U8 is connected to the anti-interference portion 11; the model of the eighth control chip U8 is LTV-817-TA-C.
Further, referring to fig. 1, 4 and 7, the detecting unit 4 includes a water temperature detecting portion 41, a water tank detecting portion 42, a water level detecting portion 43 and a water quality detecting portion 44 electrically connected to the control unit 2, wherein the water temperature detecting portion 41 is used for detecting a water outlet temperature and a water inlet temperature of the water purifier, the water tank detecting portion 42 is used for detecting a placement position of a pure water tank of the water purifier, the water level detecting portion 43 is used for detecting a water level in the pure water tank and a water level in a raw water tank, and the water quality detecting portion 44 is used for detecting a pure water quality in the pure water tank and a raw water quality in the raw water tank.
In this embodiment, referring to fig. 4 and 7, the water temperature detecting portion 41 includes an eleventh connector CN11 for connecting to a water temperature sensor, and a pin 2 of the eleventh connector CN11 is connected to a pin 16 of the fifth control chip U5, so as to feed back the water outlet temperature; the pin 4 of the eleventh connector CN11 is connected to the pin 15 of the fifth control chip U5, and is used for feeding back the water inlet temperature; the water tank detection part 42 comprises an eighth connector CN8, wherein the eighth connector CN8 is used for being connected with a distance sensor so as to detect whether the detection position of the pure water tank is accurately placed; the pin 3 of the eighth connector CN8 is connected to the pin 17 of the fifth control chip U5, and is used for feeding back a position detection signal; the water level detection part 43 comprises a ninth connector CN9 and a tenth connector CN10, wherein the ninth connector CN9 is used for connecting a water level sensor in a raw water tank, and the tenth connector CN10 is used for connecting a water level sensor in a pure water tank; the pin 4 of the ninth connector CN9 is connected to the pin 21 of the fifth control chip U5, and is used for feeding back a high water level signal, the pin 2 of the ninth connector CN9 is connected to the pin 23 of the fifth control chip U5, and the low water level signal is fed back; the pin 2 of the tenth connector CN10 is connected to the pin 19 of the fifth control chip U5, and is used for feeding back a high water level signal, the pin 4 of the tenth connector CN10 is connected to the pin 18 of the fifth control chip U5, and the low water level signal is fed back; the water quality detection unit 44 includes a seventh connector CN7, where the seventh connector CN7 is used to connect the pure water tank and the water quality detection sensor in the raw water tank, the pin 1 of the seventh connector CN7 is connected to the pin 27 and the pin 29 of the fifth control chip U5, the pin 2 of the seventh connector CN7 is connected to the pin 30 of the fifth control chip U5, the pin 3 of the seventh connector CN7 is connected to the pin 28 and the pin 31 of the control chip U5, and the pin 4 of the seventh connector CN7 is connected to the pin 32 of the fifth control chip U5.
Further, referring to fig. 1, 4 and 8, the signal output unit 5 includes a first output portion 51, a second output portion 52 and a third output portion 53 electrically connected to the control unit 2, where the first output portion 51 is used for adjusting an operating state of the electromagnetic valve, the second output portion 52 is used for adjusting an operating state of the booster pump, and the third output portion 53 is used for adjusting an operating state of the water pump.
In this embodiment, referring to fig. 4 and 8, the first output portion 51 includes a first connector CN1, a second field effect transistor Q2, and a third diode D3, where the first connector CN1 is used to connect with an electromagnetic valve, a pin 1 of the first connector CN1 is connected with a 24V supply voltage and a cathode of the third diode D3, a pin 2 of the first connector CN1 is connected with an anode of the third diode D3, an anode of the third diode D3 is also connected with a drain of the second field effect transistor Q2, a gate of the second field effect transistor Q2 is connected with a pin 1 of the fifth control chip U5, and a source of the second field effect transistor Q2 is grounded.
In this embodiment, referring to fig. 4 and 8, the second output portion 52 includes a fourth connector CN4, a first field effect transistor Q1 and a second diode D2, where the fourth connector CN4 is used to connect to a booster pump, a pin 1 of the fourth connector CN4 is connected to a 24V supply voltage and a negative electrode of the second diode D2, a pin 2 of the fourth connector CN4 and a positive electrode of the second diode D2 are connected to a drain electrode of the first field effect transistor Q1, a gate electrode of the first field effect transistor Q1 is connected to a pin 2 of the fifth control chip U5, and a source electrode of the first field effect transistor Q1 is grounded.
In this embodiment, referring to fig. 4 and 8, the third output portion 53 includes a second connector CN2, a third field effect transistor Q3, and a fourth diode D4, where the second connector CN2 is used to connect to a water pump, a pin 1 of the second connector CN2 is connected to a 24V supply voltage and a cathode of the fourth diode D4, a pin 2 of the second connector CN2 is connected to an anode of the fourth diode D4, an anode of the fourth diode D4 is also connected to a drain of the third field effect transistor Q3, a gate of the third field effect transistor Q3 is connected to a pin 9 of the fifth control chip U5, and a source of the third field effect transistor Q3 is grounded.
Further, referring to fig. 1, 4 and 9, the control unit 2 includes a fifth control chip U5, an alarm portion 21 and an anti-surge portion 22, where the alarm portion 21, the anti-surge portion 22, the power supply unit 1, the identification unit 3, the detection unit 4 and the signal output unit 5 are respectively electrically connected to the fifth control chip U5, the alarm portion 21 is used for implementing an operation alarm of the water purifier, and the anti-surge portion 22 is used for improving the stability of the control unit 2 during operation; in this embodiment, the model number of the fifth control chip U5 is SC95F8615.
In this embodiment, referring to fig. 4, the alarm portion 21 is a buzzer alarm circuit, and the buzzer alarm circuit is respectively connected to the pin 7 and the pin 8 of the fifth control chip U5; when there is abnormal problem, such as the water level is too high, water level height scheduling problem, the control unit 2 arouses the buzzer circuit, realizes the buzzer warning, improves user's use experience.
In this embodiment, referring to fig. 4 and 9, the anti-surge portion 22 includes a third connector CN3, a fourth fet Q4, a fifth diode D5, a fifth connector CN5, a first control chip U1, a twelfth connector CN12, and a thyristor TR1; the third connector CN3 is connected with the twelfth connector CN 12; the pin 1 of the third connector CN3 is connected with a 24V supply voltage and the negative electrode of a fifth diode D5, the pin 2 of the third connector CN3 is connected with the positive electrode of the fifth diode D5, the positive electrode of the fifth diode D5 is also connected with the drain electrode of the fourth field effect transistor Q4, the gate electrode of the fourth field effect transistor Q4 is connected with the pin 4 of the fifth control chip U5, and the source electrode of the fourth field effect transistor Q4 is grounded; the pin 1 and the pin 3 of the fifth connector CN5 are respectively connected with the pin 6 and the pin 4 of the first control chip U1 correspondingly, the pin 2 of the first control chip U1 is connected with the pin 6 of the fifth control chip U5, and the pin 1 of the first control chip U1 is grounded; pin 3 of the twelfth connector CN12 is connected with the G level of the thyristor TR1, and pin 1 of the twelfth connector CN12 is connected with the T1 pin of the thyristor TR 1.
In the present embodiment, by providing the anti-surge portion 22, the ultraviolet sterilization function of the water purifier can be realized, and the stability and the safety of the water purifier in operation can be provided.
The invention also correspondingly provides a PCB which is characterized in that the control circuit of the water purifier is printed on the PCB.
The invention also correspondingly provides a water purifier which comprises an electric control assembly, wherein the electric control assembly comprises the PCB.
It will be understood that equivalents and modifications will occur to those skilled in the art based on the present invention and its spirit, and all such modifications and substitutions are intended to be included within the scope of the present invention.
Claims (7)
1. The control circuit of the water purifier is characterized by comprising a power supply unit, a control unit, an identification unit, a detection unit and a signal output unit, wherein the control unit, the identification unit, the detection unit and the signal output unit are respectively and electrically connected with the power supply unit; the power supply unit is used for providing stable working voltage, the identification unit is used for identifying NFC signals of the filter element and feeding the NFC signals back to the control unit, the detection unit is used for collecting working states of the water purifier and feeding the working states back to the control unit, and the signal output unit is used for adjusting the working states of the water purifier according to control signals output by the control unit;
The control unit comprises a fifth control chip U5, an alarm part and an anti-surge part, wherein the alarm part, the anti-surge part, the power supply unit, the identification unit, the detection unit and the signal output unit are respectively and electrically connected with the fifth control chip U5, the alarm part is used for realizing the working alarm of the water purifier, and the anti-surge part is used for improving the stability of the control unit during working;
The model of the fifth control chip U5 is SC95F8615;
The identification unit comprises a fifth triode Q5, a sixth triode Q6, a sixth connector CN6, a seventh field effect transistor Q7 and an eighth triode Q8; the collector of the fifth triode Q5 is respectively connected with the pin 11 of the fifth control chip U5 and the power supply unit, and the emitter of the fifth triode Q5 is respectively connected with the pin 2 of the sixth connector CN6 and the power supply unit; the emitter of the sixth triode Q6 is respectively connected with the pin 12 of the fifth control chip U5 and the power supply unit, and the collector of the sixth triode Q6 is respectively connected with the pin 3 of the sixth connector CN6 and the power supply unit; the base electrode of the fifth triode Q5 and the base electrode of the sixth triode Q6 are respectively connected with the power supply unit; the pin 4 of the sixth connector CN6 is connected to the drain of the seventh field effect transistor Q7, the source of the seventh field effect transistor Q7 is connected to the power supply unit and the gate of the seventh field effect transistor Q7, the gate of the seventh field effect transistor Q7 is further connected to the collector of the eighth triode Q8, the base of the eighth triode Q8 is configured to receive the NFC signal, and the emitter of the eighth triode Q8 and the pin 1 of the sixth connector CN6 are grounded respectively.
2. The control circuit of a water purifier according to claim 1, further comprising a wireless communication unit and a display unit, wherein the wireless communication unit is electrically connected with the control unit and the power supply unit, respectively, and the wireless communication unit is used for realizing wireless communication between the water purifier and a mobile terminal of a user; the display unit is respectively and electrically connected with the control unit and the power supply unit, and is used for displaying the real-time working state of the water purifier.
3. The control circuit of a water purifier according to claim 1, wherein the power supply unit comprises an anti-interference part, a first voltage stabilizing part, a constant voltage part, a second voltage stabilizing part, a third voltage stabilizing part, a first voltage reducing part, a second voltage reducing part and a zero-crossing protection part, wherein an input end of the anti-interference part is used for being connected with an external power supply, an output end of the anti-interference part is connected with an input end of the constant voltage part, the first voltage stabilizing part is connected with a feedback end of the constant voltage part, an input end of the second voltage stabilizing part is connected with an output end of the constant voltage part, an output end of the second voltage stabilizing part is connected with an input end of the third voltage stabilizing part, and an output end of the third voltage stabilizing part is connected with the control unit; the output end of the second voltage stabilizing part is also connected with the input end of the first voltage reducing part, the output end of the first voltage reducing part is connected with the input end of the second voltage reducing part, and the output end of the first voltage reducing part and the output end of the second voltage reducing part are used for providing stable working voltage; the input end of the zero-crossing protection part is connected with the detection end of the third voltage stabilizing part, and the output end of the zero-crossing protection part is connected with the control unit.
4. The control circuit of a water purifier according to claim 1, wherein the detecting unit comprises a water temperature detecting part, a water tank detecting part, a water level detecting part and a water quality detecting part, which are electrically connected with the control unit, respectively, wherein the water temperature detecting part is used for detecting the outlet water temperature and inlet water temperature of the water purifier, the water tank detecting part is used for detecting the placing position of a pure water tank of the water purifier, the water level detecting part is used for detecting the water level in the pure water tank and the water level in a raw water tank, and the water quality detecting part is used for detecting the pure water quality in the pure water tank and the raw water quality in the raw water tank.
5. The control circuit of a water purifier according to claim 1, wherein the signal output unit comprises a first output part, a second output part and a third output part which are respectively and electrically connected with the control unit, the first output part is used for adjusting the working state of the electromagnetic valve, the second output part is used for adjusting the working state of the booster pump, and the third output part is used for adjusting the working state of the water pump.
6. A PCB board, wherein the control circuit of the water purifier according to any one of claims 1 to 5 is printed on the PCB board.
7. A water purifier comprising an electrical control assembly, wherein the electrical control assembly comprises the PCB of claim 6.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311304239.3A CN117111532B (en) | 2023-10-09 | 2023-10-09 | Control circuit, PCB board and purifier of purifier |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311304239.3A CN117111532B (en) | 2023-10-09 | 2023-10-09 | Control circuit, PCB board and purifier of purifier |
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| CN117111532A CN117111532A (en) | 2023-11-24 |
| CN117111532B true CN117111532B (en) | 2024-05-14 |
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| CN206788621U (en) * | 2017-06-13 | 2017-12-22 | 郑州跃龙电子科技有限公司 | A kind of water purifier control circuit |
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| CN117111532A (en) | 2023-11-24 |
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