CN218455256U - Miniature air purification device and control circuit thereof - Google Patents
Miniature air purification device and control circuit thereof Download PDFInfo
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- CN218455256U CN218455256U CN202222225570.3U CN202222225570U CN218455256U CN 218455256 U CN218455256 U CN 218455256U CN 202222225570 U CN202222225570 U CN 202222225570U CN 218455256 U CN218455256 U CN 218455256U
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Abstract
The utility model discloses a micro air purification device and a control circuit thereof, wherein the micro air purification device comprises a shell, the two sides of the shell are provided with lifting rings for connecting a necklace, and the shell is provided with a control button; a partition plate is arranged in the shell and divides the interior of the shell into a first cavity and a second cavity, a first control circuit board for realizing work control is arranged in the first cavity, a second control circuit board for realizing high-voltage output is arranged in the second cavity, and an electric brush is fixedly arranged at the top of the shell; the control button and the second control circuit board are respectively electrically connected with the first control circuit board, and the electric brush is electrically connected with the second control circuit board; the application discloses miniature air purification device for the pendant form, connects the necklace through rings, makes the user can wear with oneself to realize the air purification of minizone, improve user's use and experience.
Description
Technical Field
The utility model relates to an air purification device technical field, in particular to miniature air purification device and control circuit thereof.
Background
The air negative ions are also called negative oxygen ions, and refer to oxygen ions which obtain redundant electrons and have negative charges, and are formed by combining oxygen molecules in the air with free electrons; the discharge phenomenon, photoelectric effect, fountain, waterfall, etc. in the nature can all make the surrounding air ionized, form the negative oxygen ion.
The negative ion air purifier is an environment-optimized electric appliance which utilizes self-generated negative ions to purify, remove dust, remove odor and sterilize air, and is different from the traditional air purifier in that the negative ions are used as action factors to actively attack and capture harmful substances in the air. However, the existing anion air purifier is generally large-scale equipment used indoors, and cannot be carried about, namely, the application range is limited, and the use experience of a user is reduced.
It is seen that improvements and enhancements to the prior art are needed.
SUMMERY OF THE UTILITY MODEL
In view of the weak point of above-mentioned prior art, the utility model aims at providing a miniature air purification device connects the necklace through rings, makes the user can wear with oneself to realize the air purification of minizone, improve user's use and experience.
In order to achieve the purpose, the utility model adopts the following technical proposal:
a micro air purification device comprises a shell, wherein lifting rings used for connecting a necklace are arranged on two sides of the shell, and a control button is arranged on the shell; a partition plate is arranged in the shell and divides the interior of the shell into a first cavity and a second cavity, a first control circuit board for realizing work control is arranged in the first cavity, a second control circuit board for realizing high-voltage output is arranged in the second cavity, and an electric brush is fixedly arranged at the top of the shell; the control button and the second control circuit board are respectively electrically connected with the first control circuit board, and the electric brush is electrically connected with the second control circuit board.
In the miniature air purification device, one or more indicator lamps are arranged in the shell, and the indicator lamps are electrically connected with the first control circuit board and used for indicating the working state of the miniature air purification device.
The miniature air purification device, in still be provided with the current conducting plate in the casing, the one end of current conducting plate with first control circuit board electric connection, the other end of current conducting plate with arbitrary rings are connected, the current conducting plate is used for realizing first control circuit board's ground connection.
In the miniature air purification device, the shell comprises a first shell and a second shell which are detachably connected; two sides of the first shell are respectively provided with a first mounting seat, and the lifting ring is fixedly connected with the first mounting seats; the first shell is also provided with a second mounting seat, and the control button is fixedly connected with the second mounting seat; the top of the first shell is provided with a first connecting seat, the top of the second shell is provided with a second connecting seat, the first connecting seat and the second connecting seat are matched to form a fixed seat, and the electric brush is fixedly connected with the fixed seat; the partition plate is disposed inside the first housing.
In the miniature air purification device, a plurality of clamping grooves are formed in the first shell, a plurality of clamping blocks are arranged on the second shell, and the clamping grooves are connected with the clamping blocks in a matched mode.
In the miniature air purification device, a charging interface is arranged at the bottom of the shell and electrically connected with the first control circuit board.
The utility model also correspondingly provides a control circuit of the miniature air purification device, which is used for realizing the work control of any one of the miniature air purification devices; the control circuit comprises a power supply management part for converting and processing an input power supply, a control part for realizing work control and a voltage conversion part for realizing conversion from low voltage to high voltage, wherein the input end of the power supply management part is used for connecting an external power supply device, and the output end of the power supply management part is respectively connected with the input end of the control part and the input end of the voltage conversion part; the input end of the voltage conversion part is also connected with the output end of the control part.
In the control circuit of the micro air purification device, the control part comprises a second control chip U2, a first switch K1, a first diode D1, a second diode D2, a second resistor R2, a third resistor R3, a third capacitor C3 and a fourth capacitor C4; a pin 6 and a pin 7 of the second control chip U2 are respectively connected with the power supply management part; a pin 1 of the second control chip U2 is connected to one end of the third capacitor C3 and one end of the fourth capacitor C4, respectively; the other end of the third capacitor C3, the other end of the fourth capacitor C4 and a pin 8 of the second control chip U2 are grounded respectively; the negative electrode of the first diode D1 is connected with a pin 4 of the second control chip U2, and the positive electrode of the first diode D1 is connected with the voltage conversion part through the second resistor R2; the cathode of the second diode D2 is connected to the pin 3 of the second control chip U2, and the anode of the second diode D2 is connected to the voltage conversion unit through the third resistor R3; and a pin 2 of the second control chip U2 is respectively connected with a pin 1 and a pin 2 of the first switch K1, and a pin 3 and a pin 4 of the first switch K1 are respectively grounded.
In the control circuit of the miniature air purification device, the power management part comprises a first control chip U1, a first plug-in component J1, a first resistor R1, a first capacitor C1 and a second capacitor C2; a pin 2 and a pin 5 of the first plug-in J1 are respectively connected with one end of the first capacitor C1 and a pin 4 of the first control chip U1; a pin 1 of the first control chip U1 is connected to a pin 7 of the second control chip U2, a pin 5 of the first control chip U1 is connected to a pin 6 of the second control chip U2, a pin 3 of the first control chip U1 is connected to one end of the second capacitor C2 and the voltage conversion part, and a pin 6 of the first control chip U1 is connected to one end of the first resistor R1; the other end of the first capacitor C1, the other end of the first resistor R1, the other end of the second capacitor C2 and the pin 2 of the first control chip U1 are grounded respectively.
In the control circuit of the miniature air purification device, the voltage conversion part comprises a first transformer T1, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, a first field-effect tube Q1, a fifth capacitor C5, a sixth capacitor C6, a third diode D3 and a fourth diode D4; one end of the sixth resistor R6 is connected to the pin 5 of the second control chip U2, and the other end of the sixth resistor R6 is connected to one end of the seventh resistor R7 and the gate of the first field-effect transistor Q1, respectively; the other end of the seventh resistor R7 and the source electrode of the first field-effect tube Q1 are grounded respectively; the drain electrode of the first field effect tube Q1 is connected with a pin 2 of the first transformer T1; a pin 1 of the first transformer T1 is connected to a pin 3 of the first control chip U1, one end of the fourth resistor R4, and a pin 3 and a pin 4 of the second control chip U2, respectively; a pin 3 of the first transformer T1 is connected to the other end of the fourth resistor R4, a cathode of the third diode D3, and one end of the fifth capacitor C5, respectively; a pin 4 of the first transformer T1 is connected to one end of the sixth capacitor C6; the other end of the fifth capacitor C5 is connected to one end of a fifth resistor R5 and the anode of the fourth diode D4, respectively; the other end of the sixth capacitor C6 is connected to the anode of the third diode D3 and the cathode of the fourth diode D4, respectively; the other end of the fifth resistor R5 is an output end.
Has the advantages that:
the utility model provides a micro air purification device, which is in the form of a pendant and is connected with a necklace through a hanging ring, so that a user can wear the micro air purification device with the pendant, thereby realizing the air purification in a small range and improving the use flexibility of the micro air purification device; the miniature air purification device worn at the neck of the user can ensure that air inhaled by the user is negative oxygen ion air, so that the use experience of the user is improved; in addition, the partition board is arranged in the shell, the high-pressure output part and the low-pressure control part are separated, and the safety degree of the miniature air purification device during working is improved.
Drawings
Fig. 1 is a schematic structural view of a micro air purification device provided by the present invention;
fig. 2 is a first explosion structure diagram of the micro air purification device provided by the present invention;
FIG. 3 is a second exploded view of the micro air purifying device according to the present invention;
fig. 4 is a circuit structure diagram of the control circuit provided by the present invention.
Description of the main element symbols: the device comprises a shell 1, a shell 11, a first shell, a first mounting seat 111, a second mounting seat 112, a first connecting seat 113, a clamping groove 114, a third mounting seat 115, a second shell 12, a second connecting seat 121, a clamping block 122, a partition plate 13, a first cavity 14, a second cavity 15, a lifting ring 2, a control button 3, a first control circuit board 4, a brush 5, a conductive plate 6 and a charging interface 7.
Detailed Description
The utility model provides a miniature air purification device and control circuit thereof, for making the utility model discloses a purpose, technical scheme and effect are clearer, make clear and definite, and it is right that the following refers to the drawing and the embodiment is lifted the utility model discloses do further detailed description.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "top", "bottom", etc. are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and should not be construed as limitations of the present invention; in addition, the terms "mounted," "connected," and the like are to be construed broadly, and those skilled in the art can understand the specific meaning of the terms in the present invention according to specific situations.
Referring to fig. 1 to 3, the present invention provides a micro air purification device, which includes a housing 1, wherein two sides of the housing 1 are provided with hanging rings 2 for connecting a necklace, and the housing 1 is provided with a control button 3; a partition plate 13 is arranged in the shell 1, the partition plate 13 divides the interior of the shell 1 into a first cavity 14 and a second cavity 15, a first control circuit board 4 for realizing work control is arranged in the first cavity 14, a second control circuit board for realizing high-voltage output is arranged in the second cavity 15, and an electric brush 5 is fixedly arranged at the top of the shell 1; the control button 3 and the second control circuit board are respectively electrically connected with the first control circuit board 4, and the electric brush 5 is electrically connected with the second control circuit board; in one embodiment, the brush 5 is a carbon fiber brush and the control button 3 is a reset button.
The miniature air purification device disclosed by the application is in a pendant form, and is connected with a necklace through the hanging ring 2, so that a user can wear the miniature air purification device, small-range air purification is realized, and the use flexibility of the miniature air purification device is improved; the miniature air purification device worn at the neck of the user can ensure that air inhaled by the user is negative oxygen ion air, so that the use experience of the user is improved; when a user needs to purify the sucked air, the miniature air purification device is triggered to start to work through the control button 3, the first control circuit board 4 generates a 2KHz square wave to enable a circuit to generate high-frequency oscillation, the second control circuit board raises the voltage from 3.8V to about 2000V, the air is discharged through the tip of the electric brush 5, a large number of electrons are emitted at high speed, and the electrons are captured by oxygen molecules in the air to form negative oxygen ions so as to purify the air; a partition plate 13 is arranged in the shell 1, and the first control circuit board 4 and the second control circuit board are respectively located in the two cavities so as to separate the high-voltage output part from the low-voltage control part, so that the safety degree of the miniature air purification device during working is improved.
In one embodiment, the inner wall of the second chamber 15 is coated with a conformal coating, and the second chamber 15 is filled with a sealant, so that a high-pressure part and a low-pressure part can be effectively isolated, and the safety of the miniature air purification device during operation is further improved.
Furthermore, one or more indicator lights are arranged in the casing 1, and the indicator lights are electrically connected with the first control circuit board 4 and used for indicating the working state of the micro air purification device; in this embodiment, the two indicator lights are included, and one indicator light emits blue light to indicate the charging state of the micro air purification device; the other indicator light emits white light for indicating the working state of the miniature air purification device; the indicator light is a high-brightness indicator light, and light emitted by the indicator light can penetrate through the housing 1 to be recognized by a user.
Further, referring to fig. 2 and 3, a conductive plate 6 is further disposed in the housing 1, one end of the conductive plate 6 is electrically connected to the first control circuit board 4, the other end of the conductive plate 6 is connected to any one of the rings 2, and the conductive plate 6 is used for grounding the first control circuit board 4; the arrangement of the conductive plate 6 can improve the safety degree of the first control circuit board 4 during working; in one embodiment, the first control circuit board 4 is provided with a plug hole, the hanging ring 2 is provided with a connecting groove, one end of the conductive plate 6 is clamped with the plug hole, and the other end of the conductive plate 6 is clamped with the connecting groove.
Further, referring to fig. 2 and 3, the housing 1 includes a first housing 11 and a second housing 12 detachably connected; two sides of the first shell 11 are respectively provided with a first mounting seat 111, and the hanging ring 2 is fixedly connected with the first mounting seats 111; a second mounting seat 112 is further formed on the first housing 11, and the control button 3 is fixedly connected with the second mounting seat 112; the top of the first housing 11 is provided with a first connecting seat 113, the top of the second housing 12 is provided with a second connecting seat 121, the first connecting seat 113 and the second connecting seat 121 are matched to form a fixed seat, and the electric brush 5 is fixedly connected with the fixed seat; the partition plate 13 is disposed inside the first housing 11; the first shell 11 and the second shell 12 are detachably connected, so that a worker can conveniently maintain the first control circuit board 4 and the second control circuit board inside; in one embodiment, a mounting hole is formed in the first mounting seat 111, and the hanging ring 2 is in fit connection with the mounting hole; the control button 3 is glued to the second mounting seat 112, and the electric brush 5 is glued to the fixing seat.
Further, referring to fig. 2 and fig. 3, a plurality of clamping grooves 114 are formed in the first housing 11, a plurality of clamping blocks 122 are arranged on the second housing 12, and the clamping grooves 114 are connected with the clamping blocks 122 in a matching manner, so that the first housing 11 and the second housing 12 can be detachably connected; in one embodiment, the left and right sides of the top of the first housing 11 and the left and right sides of the bottom of the first housing 11 are respectively provided with a locking slot 114, and the second housing 12 is correspondingly provided with 4 locking blocks 122; the latch 122 is integrally formed with the second housing 12.
Further, referring to fig. 1 and 2, a charging interface 7 is arranged at the bottom of the housing 1, and the charging interface 7 is electrically connected with the first control circuit board 4; in one embodiment, the bottom of the housing 1 is provided with a third mounting seat 115, and the charging interface 7 is glued to the third mounting seat 115; the charging interface 7 is a TYPE-C interface.
Referring to fig. 4, the present invention further provides a control circuit of a micro air purification device, wherein the control circuit is used for implementing the operation control of any one of the above micro air purification devices; the control circuit comprises a power supply management part, a control part and a voltage conversion part, wherein the power supply management part is used for converting and processing an input power supply, the control part is used for realizing work control, the voltage conversion part is used for realizing low-voltage conversion to high-voltage conversion, the input end of the power supply management part is used for being connected with an external power supply device, and the output end of the power supply management part is respectively connected with the input end of the control part and the input end of the voltage conversion part; the input end of the voltage conversion part is also connected with the output end of the control part; in this embodiment, the control circuits of the power management section and the control section are printed on the first control circuit board 4, and the control circuit of the voltage conversion section is printed on the second control circuit board.
Further, the control part comprises a second control chip U2, a first switch K1, a first diode D1, a second diode D2, a second resistor R2, a third resistor R3, a third capacitor C3 and a fourth capacitor C4; a pin 6 and a pin 7 of the second control chip U2 are respectively connected with the power supply management part; a pin 1 of the second control chip U2 is connected to one end of the third capacitor C3 and one end of the fourth capacitor C4, respectively; the other end of the third capacitor C3, the other end of the fourth capacitor C4 and a pin 8 of the second control chip U2 are grounded respectively; the negative electrode of the first diode D1 is connected with a pin 4 of the second control chip U2, and the positive electrode of the first diode D1 is connected with the voltage conversion part through the second resistor R2; the cathode of the second diode D2 is connected to the pin 3 of the second control chip U2, and the anode of the second diode D2 is connected to the voltage conversion unit through the third resistor R3; a pin 2 of the second control chip U2 is connected to a pin 1 and a pin 2 of the first switch K1, respectively, and a pin 3 and a pin 4 of the first switch K1 are grounded, respectively; in one embodiment, the model of the second control chip U2 is an LD-2201 single chip microcomputer.
Further, the power management part comprises a first control chip U1, a first plug-in J1, a first resistor R1, a first capacitor C1 and a second capacitor C2; a pin 2 and a pin 5 of the first plug-in J1 are respectively connected with one end of the first capacitor C1 and a pin 4 of the first control chip U1; a pin 1 of the first control chip U1 is connected to a pin 7 of the second control chip U2, a pin 5 of the first control chip U1 is connected to a pin 6 of the second control chip U2, a pin 3 of the first control chip U1 is connected to one end of the second capacitor C2 and the voltage conversion part, and a pin 6 of the first control chip U1 is connected to one end of the first resistor R1; the other end of the first capacitor C1, the other end of the first resistor R1, the other end of the second capacitor C2 and the pin 2 of the first control chip U1 are respectively grounded; in one embodiment, the first control chip U1 has a model number TP4057SOT23-6.
Further, the voltage conversion part includes a first transformer T1, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, a first field effect transistor Q1, a fifth capacitor C5, a sixth capacitor C6, a third diode D3, and a fourth diode D4; one end of the sixth resistor R6 is connected to the pin 5 of the second control chip U2, and the other end of the sixth resistor R6 is connected to one end of the seventh resistor R7 and the gate of the first field-effect transistor Q1, respectively; the other end of the seventh resistor R7 and the source electrode of the first field-effect tube Q1 are grounded respectively; the drain electrode of the first field effect tube Q1 is connected with a pin 2 of the first transformer T1; a pin 1 of the first transformer T1 is connected to a pin 3 of the first control chip U1, one end of the fourth resistor R4, and a pin 3 and a pin 4 of the second control chip U2, respectively; a pin 3 of the first transformer T1 is connected to the other end of the fourth resistor R4, a cathode of the third diode D3, and one end of the fifth capacitor C5, respectively; a pin 4 of the first transformer T1 is connected to one end of the sixth capacitor C6; the other end of the fifth capacitor C5 is connected to one end of a fifth resistor R5 and the anode of the fourth diode D4, respectively; the other end of the sixth capacitor C6 is connected to the anode of the third diode D3 and the cathode of the fourth diode D4, respectively; the other end of the fifth resistor R5 is an output end.
When a control button 3 on the shell 1 is triggered by long pressing for 2 seconds, the first switch K1 is closed, a pin 3 of the second control chip U2 outputs a low level, the second diode D2 is a white indicator lamp, the second diode D2 is lightened, the micro air purification device is in a working state, a pin 5 of the second control chip U2 outputs a PWM wave, the grid electrode of the first field effect tube Q1 is controlled through the PWM wave, the voltage is boosted through a high-voltage packet of the first transformer T1, the circuit is doubled, and high voltage of about 2KV is generated, so that a large amount of electrons are emitted to form negative oxygen ions; when the control button 3 is pressed for a short time of 1 second, the first switch K1 is turned on, and the micro air cleaning device stops working.
The first plug-in J1 is a charging interface 7, when the first plug-in J1 is connected with a 5V charger, the first control chip U1 starts to work, a pin 1 of the first control chip U1 outputs a low level, a pin 4 of the second control chip U2 outputs a high level and a low level, the first diode D1 is a blue indicator light, and the first diode D1 is turned off after flickering for 1 second, so that the micro air purification device enters a charging state; after charging is completed, the pin 5 of the first control chip U1 outputs a low level, the pin 4 of the second control chip U2 outputs a low level, and the first diode D1 is in a normally-on state, which indicates that the micro air purification device completes charging.
It should be understood that equivalent substitutions or changes can be made by those skilled in the art according to the technical solution of the present invention and the inventive concept thereof, and all such changes or substitutions should be considered as the protection scope of the present invention.
Claims (10)
1. A micro air purification device is characterized by comprising a shell, wherein lifting rings for connecting a necklace are arranged on two sides of the shell, and a control button is arranged on the shell; a partition board is arranged in the shell and divides the interior of the shell into a first cavity and a second cavity, a first control circuit board for realizing work control is arranged in the first cavity, a second control circuit board for realizing high-voltage output is arranged in the second cavity, and an electric brush is fixedly arranged at the top of the shell; the control button and the second control circuit board are respectively electrically connected with the first control circuit board, and the electric brush is electrically connected with the second control circuit board.
2. The miniature air purification device according to claim 1, wherein one or more indicator lights are disposed in the housing, and the indicator lights are electrically connected to the first control circuit board for indicating an operating state of the miniature air purification device.
3. The miniature air purification device according to claim 1, wherein a conductive plate is further disposed in the housing, one end of the conductive plate is electrically connected to the first control circuit board, the other end of the conductive plate is connected to any one of the hanging rings, and the conductive plate is used for grounding the first control circuit board.
4. The miniature air purification device according to claim 1, wherein the housing comprises a first housing and a second housing that are detachably connected; two sides of the first shell are respectively provided with a first mounting seat, and the lifting ring is fixedly connected with the first mounting seats; the first shell is also provided with a second mounting seat, and the control button is fixedly connected with the second mounting seat; the top of the first shell is provided with a first connecting seat, the top of the second shell is provided with a second connecting seat, the first connecting seat and the second connecting seat are matched to form a fixed seat, and the electric brush is fixedly connected with the fixed seat; the partition plate is disposed inside the first housing.
5. The miniature air purification device according to claim 4, wherein the first housing is provided with a plurality of clamping grooves, the second housing is provided with a plurality of clamping blocks, and the clamping grooves are connected with the clamping blocks in a matching manner.
6. The miniature air purification device according to claim 1, wherein a charging interface is arranged at the bottom of the housing, and the charging interface is electrically connected with the first control circuit board.
7. A control circuit of a micro air cleaning device, wherein the control circuit is used for realizing the operation control of the micro air cleaning device according to any one of claims 1 to 6; the control circuit comprises a power supply management part, a control part and a voltage conversion part, wherein the power supply management part is used for converting and processing an input power supply, the control part is used for realizing work control, the voltage conversion part is used for realizing low-voltage conversion to high-voltage conversion, the input end of the power supply management part is used for being connected with an external power supply device, and the output end of the power supply management part is respectively connected with the input end of the control part and the input end of the voltage conversion part; the input end of the voltage conversion part is also connected with the output end of the control part.
8. The control circuit of the miniature air cleaning device according to claim 7, wherein the control portion comprises a second control chip U2, a first switch K1, a first diode D1, a second diode D2, a second resistor R2, a third resistor R3, a third capacitor C3 and a fourth capacitor C4; the pin 6 and the pin 7 of the second control chip U2 are respectively connected with the power supply management part; a pin 1 of the second control chip U2 is connected to one end of the third capacitor C3 and one end of the fourth capacitor C4, respectively; the other end of the third capacitor C3, the other end of the fourth capacitor C4 and a pin 8 of the second control chip U2 are grounded respectively; the cathode of the first diode D1 is connected with a pin 4 of the second control chip U2, and the anode of the first diode D1 is connected with the voltage conversion part through the second resistor R2; the cathode of the second diode D2 is connected with the pin 3 of the second control chip U2, and the anode of the second diode D2 is connected with the voltage conversion part through the third resistor R3; and a pin 2 of the second control chip U2 is respectively connected with a pin 1 and a pin 2 of the first switch K1, and a pin 3 and a pin 4 of the first switch K1 are respectively grounded.
9. The control circuit of the miniature air purification device according to claim 8, wherein the power management part comprises a first control chip U1, a first plug-in J1, a first resistor R1, a first capacitor C1 and a second capacitor C2; a pin 2 and a pin 5 of the first plug-in unit J1 are respectively connected with one end of the first capacitor C1 and a pin 4 of the first control chip U1; a pin 1 of the first control chip U1 is connected to a pin 7 of the second control chip U2, a pin 5 of the first control chip U1 is connected to a pin 6 of the second control chip U2, a pin 3 of the first control chip U1 is connected to one end of the second capacitor C2 and the voltage conversion part, and a pin 6 of the first control chip U1 is connected to one end of the first resistor R1; the other end of the first capacitor C1, the other end of the first resistor R1, the other end of the second capacitor C2 and the pin 2 of the first control chip U1 are grounded respectively.
10. The control circuit of a micro air purification device according to claim 9, wherein the voltage conversion part comprises a first transformer T1, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, a first field effect transistor Q1, a fifth capacitor C5, a sixth capacitor C6, a third diode D3 and a fourth diode D4; one end of the sixth resistor R6 is connected with the pin 5 of the second control chip U2, and the other end of the sixth resistor R6 is connected with one end of the seventh resistor R7 and the gate of the first field-effect tube Q1 respectively; the other end of the seventh resistor R7 and the source electrode of the first field-effect tube Q1 are grounded respectively; the drain electrode of the first field effect tube Q1 is connected with a pin 2 of the first transformer T1; a pin 1 of the first transformer T1 is connected to a pin 3 of the first control chip U1, one end of the fourth resistor R4, and a pin 3 and a pin 4 of the second control chip U2, respectively; a pin 3 of the first transformer T1 is connected to the other end of the fourth resistor R4, a negative electrode of the third diode D3, and one end of the fifth capacitor C5, respectively; a pin 4 of the first transformer T1 is connected to one end of the sixth capacitor C6; the other end of the fifth capacitor C5 is connected to one end of a fifth resistor R5 and the anode of the fourth diode D4, respectively; the other end of the sixth capacitor C6 is connected to the anode of the third diode D3 and the cathode of the fourth diode D4, respectively; the other end of the fifth resistor R5 is an output end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222225570.3U CN218455256U (en) | 2022-08-23 | 2022-08-23 | Miniature air purification device and control circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222225570.3U CN218455256U (en) | 2022-08-23 | 2022-08-23 | Miniature air purification device and control circuit thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218455256U true CN218455256U (en) | 2023-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222225570.3U Active CN218455256U (en) | 2022-08-23 | 2022-08-23 | Miniature air purification device and control circuit thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN218455256U (en) |
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2022
- 2022-08-23 CN CN202222225570.3U patent/CN218455256U/en active Active
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