CN210706797U

CN210706797U - Vehicle-mounted air purifier

Info

Publication number: CN210706797U
Application number: CN201921180104.XU
Authority: CN
Inventors: 蒋宁
Original assignee: First Electronic Kunshan Co ltd
Current assignee: First Electronic Kunshan Co ltd
Priority date: 2019-07-25
Filing date: 2019-07-25
Publication date: 2020-06-09
Anticipated expiration: 2029-07-25

Abstract

The utility model discloses a vehicle-mounted air purifier, this vehicle-mounted air purifier includes: the air quality sensor comprises a filter element cover plate, a middle shell, a bottom shell, an air inlet duct, an air outlet duct, a filter element, a blower, an air quality sensor, a control circuit board and a vehicle gauge connector; wherein, the filter element is fixed between the filter element cover plate and the middle shell; the air quality sensor is arranged at the air inlet; the blower is fixed between the bottom shell and the middle shell, and the bottom shell and the middle shell are combined to form an air outlet; be provided with the through-hole on the well casing, the air-blower includes inlet scoop and air exit, and the inlet scoop sets up with the through-hole relatively, and the air exit passes through connecting tube and air-out wind channel intercommunication, and the air outlet is worn to locate by the connecting tube, the technical scheme of the embodiment of the utility model, solved the problem that harmful gas and the floating dust that cause through door window and the interior air cycle of external air car get into and harm health, reached automatic air quality in the improvement car, degerming virus killing, the effect of cleaing away the peculiar smell.

Description

Vehicle-mounted air purifier

Technical Field

The embodiment of the utility model provides an relate to the air purification technique, especially relate to an on-vehicle air purifier.

Background

Modern society's use of car is more and more extensive, but car inner space is narrow and small, and door window, door are in the closed condition under most circumstances, and the air is not circulated and just produces bacterium, peculiar smell etc. easily, greatly reduced the quality of air in the car, cause the influence to human health. If the window is opened or the air in the vehicle is purified by using external circulation during driving, bad gas, floating dust and the like outside the vehicle easily enter the vehicle and are harmful to the health of human bodies.

SUMMERY OF THE UTILITY MODEL

The utility model provides a vehicle-mounted air purifier to realize improving the interior air quality of car automatically, degerming virus killing, clear away the effect of peculiar smell.

The embodiment of the utility model provides an on-vehicle air purifier, include: the air quality sensor comprises a filter element cover plate, a middle shell, a bottom shell, an air inlet duct, an air outlet duct, a filter element, a blower, an air quality sensor, a control circuit board and a vehicle gauge connector;

the filter element is fixed between the filter element cover plate and the middle shell, and an air inlet is formed between the filter element cover plate and the filter element; the air inlet duct is communicated with the air inlet, and the air quality sensor is arranged at the air inlet; the blower is fixed between the bottom shell and the middle shell, and an air outlet is formed by combining the bottom shell and the middle shell; the middle shell is provided with a through hole, the air blower comprises an air suction opening and an air outlet, the air suction opening is arranged opposite to the through hole, the air outlet is communicated with the air outlet duct through a connecting pipeline, and the connecting pipeline penetrates through the air outlet; the controller on the control circuit board is respectively connected with the air quality sensor, the air blower and the car gauge connector, and the vehicle-mounted air purifier is in communication connection with the automobile through the car gauge connector.

Optionally, the middle shell is formed with a first groove and a second groove on the same side, the filter element is clamped in the first groove, the filter element cover plate is fixed on the first groove, and the air quality sensor is fixed in the second groove.

Optionally, the control circuit board is fixed to a side of the middle housing opposite to the second groove.

Optionally, the blower is fixed to the bottom case, and the edge of the bottom case is completely butted and fixed to the edge of the middle case.

Optionally, an opening is formed in the bottom of the bottom shell, and the gauge connector is arranged outside the bottom shell through the opening.

Optionally, the vehicle-mounted air purifier further comprises an anion generator, the anion generator is electrically connected with the controller, the anion generator is fixed on the middle shell, and an anion releasing end of the anion generator penetrates through a tube shell of the connecting pipeline and is arranged in the connecting pipeline.

Optionally, a voltage dividing circuit is arranged on the control circuit board, the voltage dividing circuit includes a thermistor, and the controller is used for collecting voltage on the thermistor.

Optionally, the air quality sensor is an infrared sensor.

The embodiment of the utility model provides an on-vehicle air purifier, include: the filter element cover plate comprises a filter element cover plate body, a middle shell body, a bottom shell body, an air inlet air channel, an air outlet air channel, a filter element, an air blower, an air quality sensor, a control circuit board and a car gauge connector, air in the car is circulated through the air blower, the air quality is detected through the air quality sensor, air is filtered through the filter element and is discharged through the air outlet air channel after entering from the air inlet air channel, the controller on the control circuit board is respectively electrically connected with the air quality sensor, the air blower and the car gauge connector, the car-mounted air purifier is in communication connection with the car through the car gauge connector, so that a user can control the working state of the car-mounted air purifier through the car, the problems that harmful gas and floating dust caused by air in a car window and an external air circulation car enter and harm the health of a human body are.

Drawings

Fig. 1 is a schematic structural diagram of an on-vehicle air purifier provided in an embodiment of the present invention;

fig. 2 is a schematic structural diagram of another vehicle air purifier provided in an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of another vehicular air purifier provided in an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a control circuit of an anion generator provided in an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a voltage divider circuit provided in an embodiment of the present invention;

fig. 6 is a schematic structural diagram of an input voltage detection circuit provided in an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a bus transceiver circuit provided in an embodiment of the present invention;

fig. 8 is a schematic structural diagram of an input power control circuit provided in an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

Fig. 1 is the embodiment of the utility model provides a pair of on-vehicle air purifier's structural schematic diagram specifically is the explosion view of on-vehicle air purifier one side, this embodiment is applicable to and sets up this on-vehicle air purifier in order to improve the condition of air quality in the car inside, as shown in fig. 1, this on-vehicle air purifier includes: the air purifier comprises a filter element cover plate 1, a middle shell 2, a bottom shell 3, an air inlet duct 4, an air outlet duct 5, a filter element 6, an air blower 7, an air quality sensor 8, a control circuit board 9 and a vehicle gauge connector 10.

Fig. 2 is a schematic structural view of another vehicle-mounted air purifier provided by an embodiment of the present invention, specifically, an exploded view of the other side of the vehicle-mounted air purifier, and fig. 3 is a schematic structural view of another vehicle-mounted air purifier provided by an embodiment of the present invention, specifically, an assembled view of the vehicle-mounted air purifier, as shown in fig. 1-3, wherein the filter element 6 is fixed between the filter element cover plate 1 and the middle housing 2, and an air inlet is formed between the filter element cover plate 1 and the filter element 6; the air inlet duct 4 is communicated with the air inlet, and the air quality sensor 8 is arranged at the air inlet; the blower 7 is fixed between the bottom shell 3 and the middle shell 2, and the bottom shell 3 and the middle shell 2 are combined to form an air outlet; a through hole is formed in the middle shell 2, the air blower 7 comprises an air suction opening 71 and an air outlet 72, the air suction opening 71 and the through hole are arranged oppositely, the air outlet 72 is communicated with the air outlet duct 5 through a connecting pipeline 11, and the connecting pipeline 11 penetrates through the air outlet; the controller on the control circuit board 9 is respectively electrically connected with the air quality sensor 8, the air blower 7 and the vehicle gauge connector 10, and the vehicle-mounted air purifier is in communication connection with the automobile through the vehicle gauge connector 10.

Specifically, referring to fig. 1, the filter element 6 is used for filtering air, and an air inlet (not shown in the figure) can be formed on the upper edge of one side of the filter element cover plate 1 and the upper edge of the side edge of the same side of the filter element 6, so that air in a vehicle enters the vehicle-mounted air purifier through the air inlet duct 4 and then enters the filter element 6 through the air inlet for filtering; the air quality sensor 8 is used for detecting the air quality, and specifically can detect the content of harmful gases or substances such as fine particles, benzene, formaldehyde, carbon monoxide, hydrocarbons, sulfur dioxide and the like in the air in the vehicle; referring to fig. 2, the combination of the concave edge 31 of the bottom case 3 and the concave edge 21 of the middle case 2 can form an air outlet (not shown); the size of a through hole arranged on the middle shell 2 can be matched with the size of an air suction opening 71 of the air blower 7, the size of an air outlet 72 of the air blower 7 can be matched with the size of an air outlet formed by combining the concave edge 31 on one side of the bottom shell 3 and the concave edge 21 on one side of the middle shell 2, and after the air blower 7 is started, air can flow, so that the air flows into the vehicle-mounted air purifier and then is discharged from the air outlet duct 5 through the air outlet 72 and the connecting pipeline 11; the control circuit board 9 is used for controlling the working states of the air quality sensor 8 and the blower 7 through the controller, the vehicle-mounted air purifier CAN be in communication connection with a vehicle through the vehicle gauge connector 10, and CAN specifically establish CAN bus communication or LIN bus communication and the like with the vehicle, so that a user CAN transmit a control signal to the control circuit board 9 of the vehicle-mounted air purifier through hardware facilities and the like in the vehicle to control the working state of the vehicle-mounted air purifier.

Referring to fig. 1-3, the working principle of the vehicle-mounted air purifier is as follows: after the automobile is started, the vehicle-mounted air purifier can be opened or closed through a physical key in the automobile or a virtual key of a central control display screen, the vehicle-mounted air purifier is selected to work in an automatic gear or manual gear working state, the air blower 7 starts to operate in the automatic gear working state, air flows in from the air inlet duct 4, the air quality is detected through the air quality sensor 8, an air quality signal is generated and output to the control circuit board 9, the controller in the control circuit board 9 can generate an air blower gear adjusting signal according to the received air quality signal, so that the controller can adjust the gear size of the air blower 7 according to the quality of the air, for example, when the air quality is poor, the working gear of the air blower 7 is increased, when the air quality is good, the working gear of the air blower 7 is decreased, air sucked by the air blower 7 can enter the air suction opening 71 after being filtered by the filter element 6, the air is discharged through the air outlet duct 5 through the air outlet 72, so that the vehicle-mounted air purifier automatically adjusts the working state according to the air quality, the air in the vehicle is continuously and circularly improved, and meanwhile, an air quality signal generated by the air quality sensor 8 can be output to a central control display screen through the control circuit board 9 and the vehicle gauge connector 10 so as to display the air quality index in the vehicle in real time; under the working state of the manual gear, a user can manually select a working gear of the air blower 7 through the physical key or the virtual key of the central control display screen according to the in-vehicle air quality index displayed on the central control display screen in real time so as to purify the in-vehicle air according to the user requirement.

The embodiment of the utility model provides an on-vehicle air purifier can use in leading-in car of new car development stage, also can use in follow-up car repacking use, and is exemplary, can install the space of lifting lid handrail case below between car owner's driving and copilot, can avoid the car space extravagant, can be used for improving the interior air quality of car again.

Optionally, referring to fig. 1-2, a first groove 22 and a second groove 23 are formed on the same side of the middle casing 2, the filter element 6 is clamped in the first groove 22, the filter element cover plate 1 is fixed on the first groove 22, and the air quality sensor 8 is fixed in the second groove 23.

Specifically, the filter element cover plate 1 can be fixed on the first groove 22 through a detachable part so as to replace the filter element 6 after detachment, the through hole in the middle shell 2 is formed in the first groove 22, and the air quality sensor 8 is fixed in the second groove 23 and exposes the upper surface of the air quality sensor 8, so that the air quality sensor 8 can detect the air quality flowing into the air inlet through the air inlet duct 4.

Alternatively, referring to fig. 1-2, the control circuit board 9 is fixed to the side of the middle case 2 opposite to the second recess 23. The advantage that sets up like this is because the controller on the control circuit board 9 is connected with air quality sensor 8, air-blower 7 and car rule connector 10 electricity respectively, and control circuit board 9 sets up in the offside of air quality sensor 8 to next-door neighbour air-blower 7 for this on-vehicle air purifier structure is compacter, is convenient for walk line and inner structure integration.

Alternatively, referring to fig. 1-3, the blower 7 is secured to the bottom housing 3 with the edge of the bottom housing 3 fully abutting and secured to the edge of the middle housing 2. Specifically, one side of the blower 7 is fixed on the bottom housing 3, and the position of the air suction opening 71 on the other side of the blower 7 corresponds to the position of the through hole on the first groove 22.

Alternatively, referring to fig. 1-3, the bottom of the bottom housing 3 is provided with an opening (not shown) through which the gauge connector 10 is disposed outside the bottom housing 3. It is concrete, one end electricity connection control circuit board 9 that can pass through the wire, the wire can stretch out through the opening of end casing 3 bottom, and the other end electricity through the wire is connected and is set up at the outside car rule connector 10 of end casing 3 to car rule connector 10 communication connection car, wherein, the open-ended position and the size of end casing 3 bottom can combine actual conditions to confirm, be convenient for control circuit board 9, car rule connector 10 and the car between be connected can, the embodiment of the utility model provides a do not restrict to this.

Optionally, referring to fig. 1-2, the vehicle air purifier further includes an anion generator 12, the anion generator 12 is electrically connected to a controller in the control circuit board 9, the anion generator 12 is fixed on the middle housing 2, and an anion releasing end 121 of the anion generator 12 penetrates through the tube shell 111 of the connecting tube 11 and is placed in the connecting tube.

Specifically, the anion generator 12 is fixed on the middle housing 2 adjacent to the tube shell 111 on one side of the connecting pipe 11, and the anion releasing end 121 of the anion generator 12 penetrates through the tube shell 111 on one side of the connecting pipe 11 and is arranged in the connecting pipe, so that the anion generator 12 can generate anions through the anion releasing end 121 and discharge the anions out of the vehicle-mounted air purifier through the air outlet duct 5 along with air, and the quality of air in the vehicle is further improved.

Fig. 4 is a schematic structural diagram of a control circuit of an anion generator according to an embodiment of the present invention, fig. 4 schematically shows a circuit in which a controller in a control circuit board controls an operation of the anion generator 12, as shown in fig. 4, a port a1 and a port a2 may be respectively connected to the controller, wherein, the function of the controller provided in an embodiment of the present invention may be implemented by setting a single chip of PIC16F series, for example, the controller may be a chip of PIC16F182920-SOIC, a port 122 of the anion generator 12 is electrically connected to a power supply, a port 123 is electrically connected to a switch tube Q2, the controller may output high and low levels through the port a1 and the port a2, and control the switch tube Q2 to turn on or off through the high and low levels, so as to open or close the anion generator 12, wherein, a resistor R4, a resistor R7, a resistor R14 and a resistor R30 may be used for current limiting or voltage dividing, the capacitor C22 and the capacitor C8 may be used for filtering.

Fig. 5 is a structural schematic diagram of the voltage dividing circuit provided by the embodiment of the present invention, fig. 5 schematically shows the setting condition of the voltage dividing circuit in the control circuit board, as shown in fig. 5, it is optional, the voltage dividing circuit is provided on the control circuit board, the voltage dividing circuit includes a thermistor RTC, and the controller is used for collecting the voltage on the thermistor RTC.

Illustratively, the voltage division circuit includes a resistor R35 and a thermistor RTC, one end of the resistor R35 is connected to a power supply, the other end is electrically connected to the thermistor RTC, the resistor R35 can be used for limiting current, the port A3 is connected to the controller, the other end of the thermistor RTC is grounded, the thermistor RTC is used for detecting the air temperature in the vehicle, the air temperature change can cause the resistance value change of the thermistor RTC, and therefore the thermistor RTC can convert the temperature change into a voltage signal and output the voltage signal to the controller.

The advantage of setting like this lies in, because the precision that air quality sensor detected the air quality receives the influence of in-car air temperature easily, can revise the air quality index that air quality sensor detected according to the corresponding relation between air temperature and the air quality sensor sensitivity, for example, the voltage value that every temperature value corresponds respectively corresponds different correction coefficient, can set up at controller inner circuit, make every voltage value that receives a temperature value of controller correspondence, just automatic revise the air quality index of air quality sensor transmission that receives, output the air quality index information after will revising and current temperature information to well accuse display screen through the car rule connector and show, in order to detect the air quality in-car accurately.

Optionally, the air quality sensor is an infrared sensor. Illustratively, the infrared sensor can be used for detecting the concentration of fine particulate matters or dust in air in a vehicle, and the quality of PM2.5 air is monitored in real time, specifically, the air in the vehicle enters the infrared sensor through the air inlet duct under the suction of the blower, when the fine particulate matters floating in the air are irradiated by parallel light emitted by the infrared sensor in the vehicle-mounted air purifier, the scattered light intensity of the fine particulate matters is in direct proportion to the mass concentration, the scattered light signals are converted into electric signals corresponding to the relative mass concentration of the fine particulate matters through the infrared sensor and are output to the controller, and the controller can output the electric signals to the central control display screen through the vehicle gauge connector for displaying, so that a user knows the PM2.5 index in the vehicle.

Fig. 6 is a schematic structural diagram of an input voltage detection circuit provided by an embodiment of the present invention, as shown in fig. 6, fig. 6 schematically shows a setting condition of the input voltage detection circuit in the control circuit board, and optionally, the control circuit board is provided with the input voltage detection circuit for detecting the input voltage of the control circuit board.

Illustratively, the input voltage detection circuit comprises a resistor R21, a resistor R22 and a capacitor C9, one end of the resistor R21 is connected to the vehicle-mounted power supply, the other end of the resistor R21 is electrically connected with the resistor R22, a port A4 is connected to a controller in the control circuit board, the resistor R21 is used for limiting current or dividing voltage, the capacitor C9 can be used for filtering, the input voltage detection circuit can output the detected input voltage of the vehicle-mounted air purifier to the controller, the controller can recognize the current input voltage, and if the current input voltage exceeds the working voltage range of the vehicle-mounted air purifier, the vehicle-mounted air purifier can be controlled to stop working.

Fig. 7 is the embodiment of the utility model provides a bus transceiver circuit's that provides structural schematic diagram, fig. 7 is the schematic setting condition that shows bus transceiver circuit among the control circuit board, fig. 8 is the utility model provides a structural schematic diagram of input power control circuit, fig. 8 is the schematic setting condition that shows input power control circuit among the control circuit board, as shown in fig. 7-8, it is optional, the last bus transceiver circuit that is provided with of control circuit board, bus transceiver circuit includes bus transceiver chip U2, a communication between for realizing control circuit board and the car, still be provided with input power control circuit on the control circuit board, bus transceiver circuit is connected to input power control circuit electricity, input power control circuit is used for controlling on-vehicle air purifier's input power.

Specifically, referring to fig. 7-8, the bus transceiver circuit includes a bus transceiver chip U2, the bus transceiver chip U2 may be a LIN chip for implementing LIN bus communication between the vehicle-mounted air purifier and the vehicle, fig. 7 exemplarily shows that the bus transceiver chip U2 may be a chip of model TJA1021, the bus transceiver chip U2 includes a port RXD, a port SLP _ IN, a port WAKE _ IN, a port TXD, a port INH, a port VBAT, a port LIN and a port GND, wherein the port RXD is electrically connected to a controller and a filter capacitor C20 IN the control circuit board, the port SLP _ IN is electrically connected to the controller and the filter capacitor C21, the port WAKE _ IN is electrically connected to the port VBAT and the vehicle-mounted power supply through a current limiting resistor R25, the port TXD is electrically connected to the controller and the filter capacitor C19, the port INH is electrically connected to a port IN _ V of the input power supply control circuit, the port serves as a port communication connection of the vehicle gauge connector, the port GND is grounded, the bus transceiver circuit further comprises an inductor L8, a filter capacitor C7 and a filter capacitor C11, wherein the inductor L8 can be used for resisting interference; the input power supply control circuit comprises a power supply chip U3, a switching tube Q3, a switching tube Q7, a filter capacitor C15, a filter capacitor C16, a filter capacitor C17, a filter capacitor C18, a resistor R27 and a resistor R28, wherein the power supply chip U3 is used for converting a power supply, the function of the power supply chip U3 can be realized by setting a chip of MC78M series, for example, the power supply chip can be a chip of MC78M05BDPAK-3, and the resistor R27 and the resistor R28 are used for voltage division or current limiting.

For example, the operation principle of the bus transceiver circuit and the input power control circuit shown in fig. 7 to 8 is as follows: the vehicle-mounted air purifier can receive a sleep instruction signal sent by a vehicle through an LIN bus through a port LIN, meanwhile, a controller of the control circuit board can output a sleep signal to the bus transceiver chip U2 through a port SLP _ IN, the bus transceiver chip U2 can output a signal to the switching tube Q7 through a port INH according to the received sleep signal to turn off the switching tube Q7, so that an input power supply of the controller is disconnected, the vehicle-mounted air purifier enters a sleep state of microampere level current, and the power consumption of a battery of the whole vehicle is avoided to be serious.

The embodiment of the utility model provides an on-vehicle air purifier, can be through air quality sensor real-time supervision PM2.5 air quality, air in through air-blower circulation car, through filter core air-purifying, and produce the anion through anion generator, further air-purifying, through control circuit board and car rule connector and car establishment LIN bus communication, make the user can be through the operating condition of in-car physics button or the on-vehicle air purifier of accuse display screen control, and the car can receive the signal of control circuit board transmission, so that the operating condition of on-vehicle air purifier is shown to the well accuse display screen, the operating time, air quality coefficient and temperature etc. in the car.

Specifically, this on-vehicle air purifier's theory of operation does: the working state of the vehicle-mounted air purifier is selected through a physical button or a central control display screen in the vehicle, a controller of the control circuit board outputs a control signal according to a working gear signal input by a user, the rotating speed of the blower is correspondingly adjusted, the controller outputs high and low levels to a control circuit of the anion generator to turn on or off the anion generator, the air quality is detected through an air quality sensor and feeds back a signal corrected by a voltage dividing circuit to the central control display screen, the accurate PM2.5 air quality is displayed in real time, the controller can automatically control the blower and the anion generator according to the air quality fed back by an air quality sensor in the automatic gear working state, the control circuit board can identify the current input voltage through an input voltage detection circuit, the work is stopped when the current input voltage exceeds the working voltage range, and the controller of the control circuit board can also automatically record the working time of the vehicle-mounted air purifier, after the preset target working time is reached, the filter element replacement can be automatically prompted, after the filter element replacement is completed, the reset setting of the working time can be carried out through the central control display screen, the vehicle-mounted air purifier can also receive a dormancy instruction signal sent by the automobile through the bus transceiver circuit, the input power supply of the controller is disconnected according to the received dormancy signal, the vehicle-mounted air purifier is enabled to enter a dormancy state of microampere level current, and the serious power consumption of a battery of the whole automobile is avoided.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. An on-vehicle air purifier, comprising: the air quality sensor comprises a filter element cover plate, a middle shell, a bottom shell, an air inlet duct, an air outlet duct, a filter element, a blower, an air quality sensor, a control circuit board and a vehicle gauge connector;

2. The vehicle-mounted air purifier as recited in claim 1, wherein a first groove and a second groove are formed on the same side of the middle housing, the filter element is clamped in the first groove, the filter element cover plate is fixed on the first groove, and the air quality sensor is fixed in the second groove.

3. The vehicular air cleaner of claim 2, wherein the control circuit board is fixed to a side of the middle housing opposite to the second recess.

4. The in-vehicle air cleaner of claim 2, wherein the blower is secured to the bottom housing with the bottom housing rim fully abutting and secured to the middle housing rim.

5. The vehicle air cleaner of claim 4, wherein the bottom of the bottom housing defines an opening through which the gauge connector is disposed outside of the bottom housing.

6. The vehicle-mounted air purifier of claim 1, further comprising an anion generator electrically connected to the controller, wherein the anion generator is fixed to the middle housing, and an anion releasing end of the anion generator penetrates through a tube shell of the connecting tube and is disposed in the connecting tube.

7. The vehicle-mounted air purifier as recited in claim 1, wherein a voltage divider circuit is disposed on the control circuit board, the voltage divider circuit includes a thermistor, and the controller is configured to collect a voltage across the thermistor.

8. The vehicle air purifier of claim 1, wherein the air quality sensor is an infrared sensor.