CN218068620U - Wireless steam cleaner circuit - Google Patents
Wireless steam cleaner circuit Download PDFInfo
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- CN218068620U CN218068620U CN202220757754.1U CN202220757754U CN218068620U CN 218068620 U CN218068620 U CN 218068620U CN 202220757754 U CN202220757754 U CN 202220757754U CN 218068620 U CN218068620 U CN 218068620U
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Abstract
The utility model discloses a: a wireless steam cleaner circuit comprises a battery, a power supply circuit, an MCU (microprogrammed control unit), a heating circuit, a water pump circuit and a fan circuit, wherein the battery provides direct-current power supply input for the power supply circuit, and the power supply circuit supplies power for the heating circuit, the water pump circuit and the fan circuit; the water pump circuit comprises a first switch MOS tube, a grid electrode of the first switch MOS tube is connected with a first PWM output pin of the MCU, a source electrode of the first switch MOS tube is grounded, a drain electrode of the first switch MOS tube is connected with a power negative electrode of the water pump, and a power positive electrode of the water pump is connected with the power circuit. Through PWM control, the water flow of the water pump can be adjusted, so that the amount of steam can be adjusted; through PWM control and temperature detection, the constancy of water temperature can be realized.
Description
Technical Field
The invention relates to a wireless steam cleaner circuit.
Background
With the continuous improvement of the living standard and the technical standard of production enterprises of people, the household small electric appliances are more and more in variety and more powerful in function. A machine integrating functions of steam, dust collection, cleaning and the like appears in the market. However, the existing small household appliances have the following defects: 1. the steam output is constant, and cannot be adjusted according to different scenes; 2. the water temperature is suddenly cold and suddenly hot, and the temperature cannot be controlled.
SUMMERY OF THE UTILITY MODEL
The present invention provides a circuit of a wireless steam cleaner to solve the above-mentioned technical problems.
In order to achieve the above purpose, the invention adopts the following technical scheme: a wireless steam cleaner circuit comprises a battery, a power supply circuit, an MCU (microprogrammed control unit), a heating circuit, a water pump circuit and a fan circuit, wherein the battery provides direct-current power supply input for the power supply circuit, and the power supply circuit supplies power for the heating circuit, the water pump circuit and the fan circuit; the water pump circuit comprises a first switch MOS tube, a grid electrode of the first switch MOS tube is connected with a first PWM output pin of the MCU, a source electrode of the first switch MOS tube is grounded, a drain electrode of the first switch MOS tube is connected with a power negative electrode of the water pump, and a power positive electrode of the water pump is connected with the power circuit.
Furthermore, the water pump circuit also comprises a diode, and two ends of the diode are respectively connected with the power supply anode and the power supply cathode of the water pump.
Further, the water pump circuit further comprises a capacitor, the negative electrode of the capacitor is connected with the positive electrode of a power supply of the water pump, and the positive electrode of the diode is connected with the negative electrode of the power supply of the water pump.
Further, the heating circuit comprises a heating PTC, a second switch MOS tube and a fuse F1, one end of the fuse F1 is grounded, the other end of the fuse F1 is connected with a source electrode of the second switch MOS tube, a grid electrode of the second switch MOS tube is connected with a second PWM output pin of the MCU, a drain electrode of the second switch MOS tube is connected with a negative electrode of a power supply of the heating PTC, and a positive electrode of the power supply of the heating PTC is connected with the power supply circuit.
Furthermore, the heating circuit further comprises a low-side gate drive IC, an IN input pin of the low-side gate drive IC is connected with the second PWM output pin of the MCU, an OUT output pin of the low-side gate drive IC is connected with the gate of the second switching MOS transistor, a VCC input pin of the low-side gate drive IC is connected with the power supply circuit, and a GND pin of the low-side gate drive IC is grounded.
Further, heating circuit still includes temperature detect circuit, temperature detect circuit includes resistance R5, electric capacity C2, and ground connection behind electric capacity C2 is connected to resistance R5 one end, and the source electrode of second switch MOS pipe is connected to the resistance R5 other end, connects MCU's GPIO mouth between resistance R5, the electric capacity C2.
Further, the battery power detection circuit comprises a resistor R17 and a resistor R18, wherein the resistor R17 and the resistor R18 are connected in series and then connected between the positive electrode of the battery and the ground, and AN AN5 pin of the MCU is connected between the resistor R17 and the resistor R18.
Further, the fan circuit comprises a capacitor C14 and a diode D9, the cathode of the diode D9 is connected with the anode of the power supply circuit, the anode of the diode D9 is grounded, and the capacitor C14 and the fan are both connected with the diode D9 in parallel.
Further, the display device also comprises a display circuit, and the display circuit is electrically connected with the MCU.
Compared with the prior art, the beneficial effects of the utility model are that:
through PWM control, the water flow of the water pump can be adjusted, so that the amount of steam can be adjusted; through PWM control and temperature detection, the constancy of water temperature can be realized.
Drawings
Fig. 1 is a circuit diagram of a first embodiment of the present invention.
Fig. 2 is a schematic circuit diagram according to a first embodiment of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Example one
Referring to fig. 1-2, a wireless steam cleaner circuit comprises a battery 1, a power circuit 2, an MCU3, a heating circuit 4, a water pump circuit 5 and a fan circuit 6, wherein the battery provides direct current power input for the power circuit, and the power circuit comprises a power starting circuit 21, a first voltage stabilizing circuit 22 and a second voltage stabilizing circuit 23, and supplies power for the heating circuit, the water pump circuit and the fan circuit; the water pump circuit comprises a first switch MOS tube, a grid electrode of the first switch MOS tube is connected with a first PWM output pin of the MCU, a source electrode of the first switch MOS tube is grounded, a drain electrode of the first switch MOS tube is connected with a power negative electrode of the water pump, and a power positive electrode of the water pump is connected with the power circuit.
In this embodiment, the water pump circuit further includes a diode, and the two ends of the diode are respectively connected with the positive power supply and the negative power supply of the water pump.
In this embodiment, the water pump circuit still includes a electric capacity, the power positive pole of water pump is connected to the negative pole of electric capacity, the power negative pole of water pump is connected to the positive pole of diode.
In this embodiment, the heating circuit includes a heating PTC, a second switch MOS transistor and a fuse F1, one end of the fuse F1 is grounded, the other end of the fuse F1 is connected to a source of the second switch MOS transistor, a gate of the second switch MOS transistor is connected to a second PWM output pin of the MCU, a drain of the second switch MOS transistor is connected to a negative electrode of the heating PTC, and a positive electrode of the heating PTC power supply is connected to the power supply circuit.
IN this embodiment, the heating circuit further includes a low-side gate drive IC, an IN input pin of the low-side gate drive IC is connected to the second PWM output pin of the MCU, an OUT output pin of the low-side gate drive IC is connected to the gate of the second switching MOS transistor, a VCC input pin of the low-side gate drive IC is connected to the power circuit, and a GND pin of the low-side gate drive IC is grounded.
In this embodiment, the heating circuit further includes a temperature detection circuit, the temperature detection circuit includes resistance R5, electric capacity C2, ground connection behind resistance R5 one end connection electric capacity C2, the source electrode of second switch MOS pipe is connected to the resistance R5 other end, regard as the GPIO mouth that detects signal bit 1_check connection MCU between resistance R5, the electric capacity C2. The resistance of the PTC changes along with the temperature change, after the resistance changes, the voltage at the position of 1_check of a detection signal bit also changes, the change is input into the MCU, voltage data information is obtained after ADC conversion, the temperature information of the PTC is correspondingly obtained, according to the temperature information, the MCU sends out a control command, the PWM input of the Q1 is controlled, the power of the PTC is adjusted, and the constant temperature control is completed.
In this embodiment, the battery power detection circuit 7 is further included, the battery power detection circuit includes a resistor R17 and a resistor R18, the resistor R17 and the resistor R18 are connected in series and then connected between the positive electrode of the battery and the ground, and AN5 pin of the MCU is connected between the resistor R17 and the resistor R18.
In this embodiment, the fan circuit includes a capacitor C14 and a diode D9, a cathode of the diode D9 is connected to an anode of the power circuit, an anode of the diode D9 is grounded, and both the capacitor C14 and the fan are connected in parallel with the diode D9.
In this embodiment, the display device further includes a display circuit 8, and the display circuit is electrically connected to the MCU.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by adopting equivalent replacement or equivalent transformation fall within the protection scope of the present invention.
Claims (9)
1. A wireless steam cleaner circuit, comprising: the power supply circuit supplies power to the heating circuit, the water pump circuit and the fan circuit; the water pump circuit comprises a first switch MOS tube, a grid electrode of the first switch MOS tube is connected with a first PWM output pin of the MCU, a source electrode of the first switch MOS tube is grounded, a drain electrode of the first switch MOS tube is connected with a power negative electrode of the water pump, and a power positive electrode of the water pump is connected with the power circuit.
2. The circuit of claim 1, wherein the water pump circuit further comprises a diode, and two ends of the diode are respectively connected to the positive power supply and the negative power supply of the water pump.
3. The circuit of claim 2, wherein the pump circuit further comprises a capacitor, a negative electrode of the capacitor is connected to a positive electrode of a power source of the pump, and a positive electrode of the diode is connected to a negative electrode of the power source of the pump.
4. The circuit of claim 1, wherein the heating circuit comprises a heating PTC, a second switching MOS transistor and a fuse F1, one end of the fuse F1 is grounded, the other end of the fuse F1 is connected to the source of the second switching MOS transistor, the gate of the second switching MOS transistor is connected to the second PWM output pin of the MCU, the drain of the second switching MOS transistor is connected to the negative terminal of the heating PTC, and the positive terminal of the heating PTC is connected to the power circuit.
5. The circuit of claim 4, wherein the heating circuit further comprises a low-side gate drive IC, the IN input pin of the low-side gate drive IC is connected to the second PWM output pin of the MCU, the OUT output pin of the low-side gate drive IC is connected to the gate of the second switching MOS transistor, the VCC input pin of the low-side gate drive IC is connected to the power supply circuit, and the GND pin of the low-side gate drive IC is connected to ground.
6. The circuit of claim 4, wherein the heating circuit further comprises a temperature detection circuit, the temperature detection circuit comprises a resistor R5 and a capacitor C2, one end of the resistor R5 is connected with the capacitor C2 and then grounded, the other end of the resistor R5 is connected with a source electrode of the second switch MOS transistor, and a GPIO port of the MCU is connected between the resistor R5 and the capacitor C2.
7. The circuit of claim 1, further comprising a battery level detection circuit, wherein the battery level detection circuit comprises a resistor R17 and a resistor R18, the resistor R17 and the resistor R18 are connected in series and then connected between the positive electrode of the battery and the ground, and AN5 pin of the MCU is connected between the resistor R17 and the resistor R18.
8. The circuit of claim 1, wherein the fan circuit comprises a capacitor C14 and a diode D9, a cathode of the diode D9 is connected to an anode of the power circuit, an anode of the diode D9 is grounded, and the capacitor C14 and the fan are connected in parallel with the diode D9.
9. The wireless steam cleaner circuit of claim 1, further comprising a display circuit electrically connected to the MCU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220757754.1U CN218068620U (en) | 2022-04-01 | 2022-04-01 | Wireless steam cleaner circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220757754.1U CN218068620U (en) | 2022-04-01 | 2022-04-01 | Wireless steam cleaner circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218068620U true CN218068620U (en) | 2022-12-16 |
Family
ID=84415320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220757754.1U Active CN218068620U (en) | 2022-04-01 | 2022-04-01 | Wireless steam cleaner circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218068620U (en) |
-
2022
- 2022-04-01 CN CN202220757754.1U patent/CN218068620U/en active Active
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