CN107738558B

CN107738558B - In-car air purifier and purification method

Info

Publication number: CN107738558B
Application number: CN201710838634.8A
Authority: CN
Inventors: 宋广生; 陈烈贤
Original assignee: Beijing Zhongshihuan Indoor Environment Monitoring Research Center
Current assignee: Beijing Zhongshihuan Indoor Environment Monitoring Research Center
Priority date: 2017-09-18
Filing date: 2017-09-18
Publication date: 2020-10-27
Anticipated expiration: 2037-09-18
Also published as: CN107738558A

Abstract

The invention discloses an in-car air purifier and a purification method, and the in-car air purifier specifically comprises the following steps: the device comprises a purifying body (1), a heating and humidifying device (2), a blower (3), an air purifying device (4), a blowing air return pipeline (5), a sterilizing and disinfecting device (6), an electric valve (7), a power supply and control system (8), an ultraviolet radiation prevention cover (9), an air inlet (13) and an air outlet (14). According to the invention, large-scale machine equipment is used outside the vehicle to purify the air in the vehicle, and the comprehensive and specific mechanism design is adopted to complete the purification work of all aspects of the air in the vehicle at one time, so that common air pollutants in the vehicle can be effectively removed, the air in the vehicle is cleaned, and the riding comfort of the vehicle is improved.

Description

In-car air purifier and purification method

Technical Field

The invention relates to the technical field of air purification, in particular to an in-vehicle air purifier and a purification method.

Background

With the continuous development of economy, more and more people choose to buy the car, and it becomes the first choice to go out with the car instead of walk, and the car market is developed vigorously. Accordingly, health problems caused by pollution in the vehicle interior of the automobile have been receiving attention.

Many consumers find that many automobiles always have unpleasant odors. If the patient stays in the car for a long time, the patient is easy to feel tired, and the patient is dizzy and absentmindedly. Without any treatment, the odor is conventionally difficult to dissipate. Besides the peculiar smell, the automobile possibly contains a large amount of formaldehyde, benzene, xylene and the like, the formaldehyde and the benzene belong to carcinogens, and if the formaldehyde and the benzene are not effectively treated, the automobile is a healthy killer.

After the industrial revolution, many areas in the world have vigorously developed heavy industries, resulting in a straight-line drop in air quality, posing a serious threat to human health. In order to improve the air quality, besides a long-term air treatment policy, many scientific research institutions also actively research and develop air purification technologies, and healthy breathing experience is brought to consumers in the first time. Of course, these techniques were not originally employed on automobiles. After a long period of concept conversion, when people realize that the air in the automobile has serious pollution, the technology of purifying the vehicle-mounted air specially for the automobile is gradually paid attention.

The vehicle-mounted purifier, also called vehicle purifier or vehicle-mounted air purifier, is generally composed of a high voltage generating circuit, an anion generator, a micro fan, an air filter and other systems. The working principle is as follows: the micro fan (also called ventilator) in the machine makes the air in the vehicle circularly flow, the polluted air filters or adsorbs various pollutants after passing through the PM2.5 filter screen and the active carbon filter element in the machine, then the polluted air passes through the anion generator (the high voltage in the anion generator generates direct current negative high voltage during working) arranged at the air outlet, the air is continuously ionized, a large amount of anions are generated, the anions are sent out by the micro fan, and the purpose of cleaning and purifying the air is achieved.

However, although the existing air purifiers for vehicles can achieve a certain purification effect, it is difficult to effectively purify the air in the vehicles. Therefore, a new air purification technology in a vehicle, which can effectively remove various pollutants in the vehicle, is needed to meet the further demands of people for air purification.

Disclosure of Invention

In view of the above problems, the present invention has been made to provide an in-vehicle air cleaner and a cleaning method that overcome or at least partially solve the above problems.

According to an aspect of the present invention, there is provided an in-vehicle air cleaner including:

the device comprises a purifying machine body 1, a heating and humidifying device 2, a blower 3, an air purifying device 4, a blowing air return pipeline 5, a sterilizing and disinfecting device 6, an electric valve 7, a power supply and control system 8, an ultraviolet radiation prevention cover 9, an air inlet 13 and an air outlet 14;

the sterilization and disinfection device (6) is connected with the vehicle to be purified, the ultraviolet radiation cover (9) covers the vehicle to be purified, the air blower (3) heats and humidifies the air after passing through the heating and humidifying device (2), and then the air is sent into the vehicle to be purified through the air supply and return pipeline (5) to raise the temperature and humidity in the vehicle, so that the release of pollutants is accelerated; the air blower (3) sucks air into the vehicle through the air inlet (13), and exhausts partial air in the vehicle to be purified through the air outlet (14), so that the humidity of the air in the vehicle can be adjusted; the interior of the vehicle is sterilized and disinfected by starting the sterilizing and disinfecting device (6); then the air in the automobile to be purified is sent into an air purification device (4) through an air supply and return pipeline (5) by an air feeder (3), and then is circularly sent into the automobile to be purified through the air supply and return pipeline (5) to purify the air in the automobile;

the power supply and control system 8 is used for realizing power supply and control of each component; the electrically operated valve 7 is used for controlling the working state of each component.

The forced draught blower specifically includes:

the damp and hot air generated by the heating and humidifying device 2 is sent into the vehicle to be purified through an air supply pipeline 51 in an air supply and return pipeline 5, then enters the cavity of the electric valve 7 through an air return pipeline 52 in the air supply and return pipeline 5, and then enters the air feeder 3 again for circularly heating and humidifying, so that the air in the vehicle to be purified reaches the preset temperature and humidity requirement;

clean air is delivered into the vehicle to be purified through an air delivery pipeline 51 in the air delivery return pipeline 5, and air polluted in the vehicle to be purified flows through an air purification device 4 through an air return pipeline 52 in the air delivery return pipeline 5 to be purified;

the clean air purified by the air purification device 4 from the air inlet 13 is sent into the vehicle to be purified through the blower 3 and the air supply pipeline 51 in the air supply and return pipeline 5, and the water vapor enters the cavity of the electric valve 7 through the air return pipeline 52 in the air supply and return pipeline 5 and is discharged from the air outlet 14.

The heating and humidifying device further comprises:

the heating and humidifying device 2 comprises a heater 21 and a humidifier 22, and can generate hot and humid air;

the wet and hot air is sent into the vehicle to be purified by the blower 3 through the air supply pipeline 51 in the air supply and return pipeline 5, enters the cavity of the electric valve 7 through the air return pipeline 52 in the air supply and return pipeline 5, and then enters the blower 3, and the air in the vehicle to be purified reaches the set temperature and humidity requirement through circulating heating and humidification;

the heater 21 uses a PTC ceramic heater or a heating wire heater; the humidifier 22 uses an oscillating humidifier, a PTC ceramic water heater, or a natural evaporation humidifier.

The air purification device further comprises:

the air purification device 4 is internally provided with 4 filters which are provided with different purification materials and comprise: an ozone filter 42 for removing residual ozone after removing air pollutants by catalytic oxidative decomposition; a formaldehyde filter 43 for removing formaldehyde from the air; a TVOC filter 44 for removing TVOC from the air; a particulate filter 45 for removing particulate matter in the vehicle air and particulate matter that may be generated by the ozone filter 42, the formaldehyde filter 43, and the TVOC filter 44;

the 4 filters with different purifying materials are respectively placed in a mode of two-by-two parallel horizontal placement or a mode of two-by-two parallel vertical placement, and the 4 filters with different purifying materials are connected in series.

The air supply and return pipeline further comprises:

the air supply and return duct 5 comprises an air supply duct 51 and a return duct 52, and is made of stainless steel round tubes, aluminum alloy tubes, galvanized steel tubes, polyvinyl chloride tubes or polypropylene tubes; the air supply and return pipeline 5 is externally provided with a heat insulation layer and can horizontally rotate by an angle larger than or equal to 90 degrees;

the connection between the air supply/return duct 5 and the sterilizing device 6 is formed by connecting a flexible duct 511 and a flexible duct 521.

The sterilization and disinfection device further comprises:

the sterilization and disinfection device 6 comprises an ultraviolet sterilization lamp 61, an ozone generator 62, a temperature and humidity detector 63, an ultraviolet sterilization lamp protection frame 64, a sealing gasket 66, a device substrate 67, a microswitch 68, an air outlet of the air supply pipeline 51 and the tail end of the air return pipeline 52;

the sterilization and disinfection device 6 is assembled and fixed on the device substrate 67 to form an integral structure, and the lifting is controlled by a traction device 69;

the sterilization and disinfection device 6 is provided with a microswitch 68 for controlling the power switches of the heating and humidifying device 2, the blower 3 and the ultraviolet radiation prevention cover 9; when the sterilizing and disinfecting device 6 is mounted on the vehicle to be purified and the microswitch 68 is touched, the power supply of the heating and humidifying device 2, the blower 3 and the ultraviolet radiation preventing cover 9 can be switched on.

The electric valve device further includes:

an electric valve 71, an electric valve 72 and an electric valve 73 are arranged in the cavity of the electric valve 7 to control the air flowing direction; the electric valve 7 is tightly connected with the heating and humidifying device 2 and the air purifying device 4;

when the electric valve 72 and the electric valve 73 are closed and the electric valve 71 is opened, the blower 3 sends the hot and humid air generated in the heating and humidifying device 2 into the vehicle to be purified, and then the hot and humid air circularly enters the blower 3 through the electric valve 71, so that the circular heating effect is achieved;

when the electric valve 71 and the electric valve 73 are closed, the electric valve 72 is opened, the polluted air in the vehicle to be purified flows through the air purification device 4 through the electric valve 72 for purification, and then the clean air is conveyed into the vehicle to be purified by the blower for circularly purifying the air in the vehicle to be purified;

when the

electric valves

71 and 72 are closed and the electric valve 73 is opened, the air sucked from the air inlet 13 by the blower 3 is sent into the vehicle to be purified through the air purification device 4, and the water vapor is discharged from the exhaust port 14 through the electric valve 73, thereby reducing the relative humidity of the air in the vehicle to be purified.

The power supply and control system further comprises:

a power supply and control system 8 including a control circuit 81 and a display 82 for supplying power to each of the power consuming components and controlling the operation and stop thereof;

the power supply and control system 8 is powered on to first provide the electric energy to the sterilization and disinfection device 6 to connect the sterilization and disinfection device 6 with the vehicle to be purified, and then perform sterilization, disinfection and purification operations on the interior of the vehicle to be purified.

The ultraviolet radiation prevention cover further comprises:

the ultraviolet radiation prevention cover 9 is of a covering structure and covers all door and window glass, front glass and rear glass of the purified vehicle; the fabric is made of ultraviolet-proof cloth, ultraviolet-proof plastic cloth or rigid material;

the ultraviolet radiation preventing cover 9 is controlled by the microswitch 68, the microswitch 68 is connected with the power supply of the traction device 91 of the ultraviolet radiation preventing cover 9, and the ultraviolet radiation preventing cover 9 is controlled to be lifted and lowered to cover or remove from the vehicle to be purified; or a power switch of the ultraviolet radiation prevention cover (9) is manually controlled;

the power switch of the ultraviolet germicidal lamp 61 is in linkage relation with the ultraviolet radiation preventing cover 9 and is controlled by the ultraviolet radiation preventing cover 9, and the ultraviolet germicidal lamp 61 in the sterilizing device can be lighted only when all door glass, front glass and rear glass of the vehicle to be purified are covered by the ultraviolet radiation preventing cover 9 or the vehicle to be purified is enclosed; bright; or a power switch for manually controlling the ultraviolet germicidal lamp (61).

According to another aspect of the present invention, there is provided an in-vehicle air purification method using the in-vehicle air purifier as described above, the method including:

moving the decontaminated vehicle to a designated location;

a user switches on the power supplies of the sterilization and disinfection device 6, the electric valve 7, the ultraviolet radiation prevention cover 9 and the electric butterfly valve 41 in the air purification device 4 by scanning the power supply of the air purifier in the vehicle and the two-dimensional code on the controller system 8 or by manual operation;

the sterilization and disinfection device 6 is controlled by a traction device 69 to ascend and descend and is connected with a vehicle to be purified, and a micro switch 68 is connected with the power supply of the heating and humidifying device 2, the air feeder 3 and the traction device 91 of the ultraviolet radiation prevention cover 9;

the blower 3 heats the damp and hot air generated by the heater 21 and the humidifier 22 in the humidifying device 2, and the damp and hot air circulates through the air supply and return pipeline 5, so that the air in the purified vehicle reaches the temperature requirement that the optimal temperature is controlled between 35 ℃ and 55 ℃, and the optimal relative humidity is controlled between 45% and 65%;

clean air is sent into the vehicle to be purified through the air supply pipeline 51, so that the air in the vehicle to be purified passes through the air purification device 4 through the air return pipeline 52, air pollutants such as formaldehyde, TVOC, particulate matters and the like in the vehicle to be purified are removed, and the air in the vehicle to be purified is circularly purified;

starting the traction device 91 of the ultraviolet radiation prevention cover 9 to enable the ultraviolet radiation prevention cover 9 to cover or enclose the purified vehicle; under the condition that the air in the vehicle to be purified is purified and kept clean, the ultraviolet lamp 61 and the ozone generator 62 are started; the hot air generated by the heater 21 in the heating and humidifying device 2 is circulated through the air supply return duct 5 by the air supply device 3;

the air on site is sucked into the purifier through the air inlet 13 and the electric butterfly valve 41, is purified by the air purifying device 4 and then is sent into the purified vehicle through the air supply pipeline 51, and the water vapor is discharged from the exhaust port 14 through the air return pipeline 52;

after purification, the ultraviolet radiation-proof cover 9 is folded, the sterilization and disinfection device 6 is separated from the vehicle to be purified, and the power supply and control system 8 is closed.

According to one or more technical schemes, the invention provides a novel in-vehicle air purifier and a purifying method, large-scale machine equipment is used outside a vehicle to purify the air in the vehicle, and all aspects of the purification work of the air in the vehicle can be completed at one time through comprehensive and specific mechanism design, so that common air pollutants in the vehicle can be effectively removed, the air in the vehicle can be cleaned, and the riding comfort of the vehicle can be improved.

Furthermore, the invention breaks through the bottleneck that the existing air purification in the vehicle is all miniaturized equipment, provides a one-stop service scheme for the air purification in the vehicle, and a user can complete the whole air purification in the vehicle by self operation or the cooperation of workers only by driving the vehicle to a specified place, thereby ensuring that the air purification in the vehicle is simple and easy to implement and easy to popularize.

Furthermore, when the air purifier is used in an air purification field, the air purifier in the vehicle can be started in a two-dimensional code scanning mode, so that the autonomous operation of a user is realized, and the air purifier in the vehicle can be more autonomously purified by the user.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is a schematic structural view of a cabinet type main body of an air cleaner for a vehicle according to an embodiment of the present invention.

Fig. 2 is a schematic view illustrating a horizontal type main body structure of an air cleaner for a vehicle according to an embodiment of the present invention.

Fig. 3 shows a schematic diagram of a cabinet type blower 3, a heating and humidifying device 2, an air purifying device 4 and an electric valve 7 of a vehicle air purifier according to an embodiment of the invention.

Fig. 4 shows a schematic diagram of the blower 3, the heating and humidifying device 2, and the electric valve 7 according to an embodiment of the present invention.

Fig. 5 is a schematic view showing the heating and humidifying device 2 of fig. 4 installed on the front side according to an embodiment of the present invention.

Fig. 6 shows a schematic view of the electric valve 7 of fig. 4 installed behind the heating and humidifying device 2 according to an embodiment of the present invention.

Fig. 7 shows a schematic view of the air cleaning apparatus 4 installed horizontally in parallel two by two according to an embodiment of the present invention.

Fig. 8 shows a schematic view of a single horizontal installation of an air cleaning device 4 according to an embodiment of the present invention.

Fig. 9 shows a schematic view of the air cleaning apparatus 4 installed vertically two by two according to an embodiment of the present invention.

Fig. 10 shows a single vertical installation schematic of the air cleaning device 4 according to one embodiment of the present invention.

Fig. 11 shows a schematic structural diagram of the air purification apparatus 4 according to an embodiment of the present invention.

Fig. 12 shows a schematic view of the structure of the vertically installed air cleaning apparatus 4 according to an embodiment of the present invention.

Fig. 13 shows a schematic view of the structure of the supply air return duct 5 according to an embodiment of the present invention.

Fig. 14 shows a schematic structural view of the sterilization and disinfection apparatus 6 according to an embodiment of the present invention.

Fig. 15 shows another schematic structure of the sterilization and disinfection device 6 according to an embodiment of the present invention.

Fig. 16 shows a structure of the outlet port 512 of the blast duct 51 according to an embodiment of the present invention.

Fig. 17 is a schematic view showing a covering structure of the ultraviolet radiation protection cover 9 according to an embodiment of the present invention.

FIG. 18 shows a schematic view of the containment structure of the UV radiation shield 9' according to one embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

Fig. 1 is a schematic structural diagram of an in-vehicle air cleaner according to the present embodiment, and referring to fig. 1, the in-vehicle air cleaner may include:

the device comprises a purifying machine body 1, a heating and humidifying device 2, a blower 3, an air purifying device 4, a blowing and air returning pipeline 5, a sterilizing and disinfecting device 6, an electric valve 7, a power supply and control system 8, an ultraviolet radiation prevention cover 9, an air inlet 13 and an air outlet 14. The universal wheels 11 enable the air purifier in the vehicle to move conveniently.

After the sterilization and disinfection device (6) is connected with the vehicle to be purified, the air blower (3) heats and humidifies the air by the heating and humidifying device (2), and then the air is sent into the vehicle to be purified by the air supply return duct (5) to raise the temperature and humidity in the vehicle so as to accelerate the release of pollutants; the blower (3) sucks air into the vehicle through the air inlet (13) and exhausts the air in the purified vehicle through the air outlet (14), so that the humidity in the vehicle can be reduced; after the purified vehicle is covered by the ultraviolet radiation cover (9), the sterilization and disinfection device (6) is started to sterilize and disinfect the interior of the vehicle; then the air in the automobile to be purified is sent into an air purification device (4) through an air supply and return pipeline (5) by an air feeder (3), and then is circularly sent into the automobile to be purified through the air supply and return pipeline (5) to purify the air in the automobile; the power supply and control system 8 is used for realizing power supply and control of each component; the electric valve (7) is used for controlling the working state of each component.

The rock wool insulating layer 12 encloses the chambers of the heating and humidifying device 2, the blower 3 and the electric valve 7, so as to reduce heat loss and prevent water vapor from dewing in the chambers.

Specifically, the ultraviolet germicidal lamp 61 and the ozone generator 62 in the germicidal device 6 are utilized to kill the bacteria, viruses and other microorganisms on the inner surface of the vehicle to be purified and in the air, so as to achieve the germicidal effect; the air blower 3 is used for circularly sending the damp and hot air generated by the heater 21 and the humidifier 22 in the heating and humidifying device 2 into the vehicle to be purified through the air supply and return pipeline 5 to reach a certain temperature and humidity, so that the release speed of pollutants in the vehicle to be purified is accelerated; utilize forced draught blower 3 to carry contaminated air to air purification device 4 in receiving the vehicle that purifies, through 4 kinds of different purifier filters that are equipped with, air pollutants such as residual ozone and the interior formaldehyde of receiving the vehicle that purifies, TVOC, particulate matter are got rid of in the circulation purification, reach the effect that improves and improve the interior air quality of receiving the vehicle that purifies.

As shown in fig. 2, the present embodiment can also provide a purification apparatus body 1' of a horizontal type structure. Wherein, only the purifying body is changed, and in order to use the purifying body, the arrangement mode of each internal component is also changed, and the function is not changed.

Further, as shown in fig. 3 and 4, fig. 3 shows the purifying body 1 in a vertical structure, and fig. 4 shows the purifying body 1' in a horizontal structure. The two are structurally different only, and the overall functions are similar. In fig. 3 or 4, the blower 3 provides the power for air flow, and the main functions are three: firstly, utilize forced draught blower 3 to send into the interior of receiving the purification vehicle through supply air duct 51, get into the intracavity of electric valve 7 through return air duct 52,

electric valve

72, 73 close this moment, and electric valve 71 opens, reentrant forced draught blower 3, and the circulation heating humidification makes the interior air of car reach certain humiture requirement. The second is that clean air is delivered into the vehicle to be purified through the air supply pipeline 51, and the air polluted in the vehicle to be purified flows through the air purification device 4 through the air return pipeline 52 to be purified, so that the air polluted in the vehicle to be purified and the clean air of the purifier are exchanged, and the effect of circularly purifying the air in the vehicle to be purified is achieved. Thirdly, air at a suction site is sucked into the purifier 1 through the air inlet 13, the clean air purified by the air purifying device 4 is sent into the vehicle to be purified through the air vent 32, the blower 3 and the air supply pipeline 51, water vapor enters the cavity of the electric valve 7 through the air return pipeline 52, at the moment, the

electric valves

71 and 72 are closed, the electric valve 73 is opened, and then the air is discharged from the air outlet 14, so that the relative humidity of the air in the vehicle to be purified is reduced.

The heater 21 and the humidifier 22 in the heating and humidifying device 2 generate hot and humid air, and the hot and humid air is sent into the vehicle to be cleaned by the blower 3 through the blower duct 51. Enters the cavity of the electric valve 7 through the air return pipeline 52, at the moment, the

electric valves

72 and 73 are closed, the electric valve 71 is opened, and then enters the blower 3, and the air in the vehicle reaches a certain temperature and humidity requirement through circulating heating and humidification. Because the release rate of pollutants in the material is a function of the temperature and the humidity within a certain temperature and humidity range, the release rate is accelerated along with the increase of the temperature and the humidity, and the release speed of pollutants in the vehicle is accelerated.

The heater 21 may be a PTC ceramic heater or a heating wire heater. The humidifier 22 uses an oscillation humidifier, and a PTC ceramic water heater and a natural evaporation humidifier may be used. The mist generated by the humidifier 22 is rapidly vaporized and evaporated into steam by the heater 21, and is sent into the vehicle to be purified through the air supply duct 51, thereby rapidly increasing the temperature and humidity in the vehicle.

After the temperature and humidity are detected by a temperature and humidity detector 63 installed at the outer side of the tail end of the air return duct 52, the temperature and humidity of the air in the vehicle to be purified are kept at set values under the control of feedback signals. The optimal temperature is controlled between 35 ℃ and 55 ℃, and the optimal relative humidity is controlled between 35% and 65%. The temperature and the humidity are low, the release of pollutants in the purified vehicle is not facilitated, and the release of pollutants in the vehicle is facilitated due to the overhigh temperature and humidity, but the pollution is adversely affected by automobile parts which are sensitive to the temperature and the humidity in the purified vehicle.

As shown in fig. 5, the heating and humidifying device 2 is installed on the front side, such as the heater 21 'and the humidifier 22'. The heating and humidifying device 2 can be installed at other positions of the air purifier in the vehicle as long as the heating and humidifying function can be completed.

As shown in fig. 3 or 4, the electrically operated valve 7 mainly controls the air flow direction, and electrically operated

valves

71, 72, and 73 are installed in the cavity of the electrically operated valve 7, so that there may be three air flow paths in total for controlling the air flow direction. A first flow path: the

electric valves

72 and 73 are closed, the electric valve 71 is opened, the blower 3 sends the hot and humid air generated in the heating and humidifying device 2 into the vehicle to be purified, and then the hot and humid air circularly enters the blower 3 through the electric valve 71, so that the circular heating effect is achieved; a second flow path: the

electric valves

71 and 73 are closed, the electric valve 72 is opened, the air polluted in the purified vehicle flows through the air purification device 4 through the electric valve 72 for purification, and then the clean air is conveyed into the purified vehicle by the blower, so that the effect of circularly purifying the air in the purified vehicle is achieved; a third flow path: the

electric valves

71 and 72 are closed, the electric valve 73 is opened, the air sucked from the air inlet 13 and the electric valve 41 by the blower 3 is sent into the vehicle to be purified through the air purifying device 4, and the water vapor is discharged from the air outlet 14 through the electric valve 73, so that the relative humidity of the air in the vehicle to be purified is reduced. The electric valve 7 is required to be closely connected with the heating and humidifying device 2 and the air purifying device 4, so that the air path is as short as possible. The installation positions of the cavity of the heating and humidifying device 2 and the cavity of the electric valve 7 can be arranged in a left-right arrangement mode or in a front-back arrangement mode. Arranged in a front-rear manner, as shown in fig. 5, a heater 21 'and a humidifier 22' of the heating and humidifying device 2 are arranged in front of the purifying body 1; the

electric valves

71, 72, and 73 of the electric valve 7 are arranged behind the purifying body 1. The humidifier 21' is more convenient to replenish water by adopting the front and back arrangement.

Fig. 6 is an arrangement view of the electrically operated valves 71 ', 72', and 73 'in the horizontally arranged purification apparatus body 1'. The electrically operated valves 71 ', 72 ' and 73 ' have the same functions as the electrically operated

valves

71, 72 and 73, and are arranged differently.

As shown in fig. 3, 4 kinds of filters with different purifying materials are installed in the air purifying device 4, and the air purifying device has the function of removing residual ozone after removing air pollutants in a vehicle to be purified and air pollutants such as formaldehyde, TVOC, particulate matters and the like in the vehicle, so as to improve and enhance the quality of the air in the vehicle to be purified. The ozone filter 42 is used for removing residual ozone after removing pollutants in the air in the vehicle to be purified through catalytic oxidation decomposition, the formaldehyde filter 43 is used for removing formaldehyde in the air in the vehicle, the TVOC filter 44 is used for removing TVOC in the air in the vehicle, the particulate matter filter 45 is used for removing particulate matters in the air in the vehicle and particulate matters possibly generated by the

filters

42, 43 and 44, clean air is conveyed into the vehicle to be purified in a circulating and reciprocating mode, the pollutants in the air in the vehicle are taken out, and the purpose of quickly purifying the air in the vehicle is achieved.

As shown in FIG. 7, 4 filters 42-45 with different purifying materials are respectively placed in parallel in pairs, and the 4 filters with different purifying materials are connected in series. The air flow direction passes through the filters 42 to 45 from top to bottom in sequence, and then is sucked into the cavity of the blower 3 through the air vent 32 between the air blower 3 and the air filter. The two-two parallel connection mode is adopted to increase the area of the filter and the quantity of the filtering materials, improve the purification effect and keep the longer purification service life. The direction of the air flow is from top to bottom through the filter in order to reduce unnecessary wear caused by friction between the particulate filter material.

As shown in fig. 8, in order to reduce the volume of the purifier and the amount of the filter material used, only one filter 42 to 45 may be used, but the purifying effect is reduced, the purifying time is prolonged, and the purifying life is shortened.

As shown in fig. 9, the purifier in the air purification device 4 can be installed in another way, 4 kinds of filters 42 'to 45' with different purification materials are respectively installed in parallel and vertically, and the 4 kinds of filters 42 'to 45' with different purification materials are also connected in series. The filters 42 'to 45' are vertically arranged, and a flow guide baffle 46 and a filter guide groove 47 are required to be additionally arranged.

As shown in fig. 10, in order to reduce the volume of the purifier and the amount of the filter material, only one filter may be used for each of the filters 42 'to 45'.

Further, as shown in fig. 11, filters 42 to 44 and 42 'to 44' are each manufactured in a sandwich biscuit manner: the middle layer is a filter material 421; the periphery is a rigid frame 422 which is made of stainless steel or alloy aluminum and plastic; the two surfaces consist of a stainless steel pipe or aluminum alloy pipe rigid parting bead 423, a stainless steel net or aluminum alloy and plastic net 424 and a filter screen 425; the load can be 2-10 kg. The optimal thickness of the filtering material is 10 mm-50 mm, the filtering material is too thin and has poor purification effect, and the filtering material is too thick and has too large air resistance. The filters 42 'to 44' are vertically arranged, and a flow guide baffle 46 and a filter guide groove 47 are required to be additionally arranged.

Further, fig. 12 is a schematic structural view of the vertically installed air cleaning apparatus 4.

As shown in fig. 13, the air supply/return duct 5 is a duct for circulating the air in the vehicle to be cleaned through the air cleaning device 4, or is a duct for circulating the air in the vehicle to be cleaned through the air outlet 14, or is a duct for circulating the air in the vehicle to be cleaned, or is a duct for exhausting the air in the vehicle to be cleaned through the air outlet 14, or is a duct for sending hot and humid air into the vehicle to be cleaned.

The air supply and return duct 5 is composed of an air supply duct 51 and an air return duct 52, is made of stainless steel round tubes, and is externally provided with a heat preservation layer, so that heat loss can be reduced and moisture condensation of water vapor in the tubes can be prevented during conveying of damp and hot air. The air supply and return duct 5 can also be made of aluminum alloy pipes, galvanized steel pipes, polyvinyl chloride pipes, polypropylene pipes and the like. The angle of the air supply and return duct 5 which can horizontally rotate is more than or equal to 90 degrees. The air supply and return duct 5 can also be a fixed device with the angle of the purifying machine body 1 equal to 90 degrees.

As shown in fig. 16, the air supply/return duct 5 is connected to the sterilizer 6 by

flexible ducts

511 and 521 so as to be easily fixed to the vehicle to be cleaned and to maintain a hermetic seal. In order to effectively organize and control the air flow distribution of the air outlet of the air supply pipeline 51 and quickly and uniformly blow the air to the front, the back and the periphery in the automobile, an air outlet device 512 consisting of a rectifying cone 5121 and a connecting rod 5122 is designed. The device 512 redirects the air flow along the axial direction of the duct so that the air flow is blown out along a transverse direction 360 ° perpendicular to the axial direction of the duct. The diameter of the bottom surface of the cone 5121 is 0.4-0.7 times of the diameter of the air outlet of the air supply pipeline 51, the taper is 30-120 degrees, and the cone and the bottom platform are in smooth transition. The length of the connecting rod 5122 is 0.2-1.0 times of the diameter of the air outlet of the air supply pipeline 51, the length is too short, the air resistance is too large, the initial speed of the transverse blowing of too long air flow is low, and the blowing distance is too short. The connecting rod 5122 is oblate or round, and has a diameter as small as possible under the condition of ensuring the strength requirement, so that the air resistance is reduced. The air outlet device 512 can also be designed into a square or rectangle, a triangle is used for replacing a cone, the angle is still maintained between 30 degrees and 120 degrees, and the air outlet device is smoothly transited with the bottom platform and is exhausted from four sides or two sides. The return air inlet 522 of the return air duct 52 must be 200-1500 mm lower than the bottom surface of the air outlet device 512 of the air supply duct 51, which is beneficial to the quick mixing of the clean air blown out from the air outlet in the automobile and the maximum discharge of air pollutants.

As shown in fig. 14, the three sterilization devices 6 have three main functions, and perform sterilization and disinfection functions, and perform functions of feeding the tail end of the air supply and return duct 5 into the vehicle to be purified, and connecting and sealing the vehicle to be purified.

The sterilization and disinfection device 6 is composed of an ultraviolet sterilization lamp 61, an ozone generator 62, a temperature and humidity detector 63, an ultraviolet sterilization lamp protective frame 64, a sealing gasket 66, a device substrate 67, a microswitch 68, an air outlet of the air supply pipeline 51, the tail end of the air return pipeline 52 and the like, and is assembled and fixed on the device substrate 67 to form an integral structure, and the lifting is controlled by a traction device 69. The device substrate 67 is made of a rigid material such as a plastic plate, a stainless steel plate or an aluminum alloy plate. The ultraviolet germicidal lamp 61 generates ultraviolet rays, the ozone generator 62 generates ozone, and the synergistic effect of the ultraviolet rays and the ozone is utilized to kill microbes such as bacteria, viruses and the like on the inner surface of the vehicle to be purified and in the air, so that the sterilization and disinfection effects are achieved. The ozone generator 62 generates more than 200mg/h of ozone. The ultraviolet germicidal lamp 61 has a working voltage of 220V, a power of 30W-50W, an ultraviolet radiation intensity of about 150-200 μ W/cm2, a wavelength of 253.7nm and ozone ultraviolet germicidal lamps, and the number of the ultraviolet germicidal lamps is 2-6. The number of the ultraviolet germicidal lamps 61 is 2-6, and the purpose is to ensure that the microorganisms such as bacteria, viruses and the like on the inner surface of the purified vehicle and in the air can be killed within a few minutes under the given ultraviolet radiation intensity. The ultraviolet germicidal lamp 61 may be an ozone-free ultraviolet germicidal lamp.

As shown in fig. 15, in another arrangement of the sterilization and disinfection apparatus, the uv germicidal lamp 61 is vertically fixed on the apparatus substrate 67, or may be horizontally fixed on the apparatus substrate 67 as the uv germicidal lamp 61'. The ultraviolet germicidal lamp shield frame 64 is used to prevent the ultraviolet germicidal lamp 61 from being damaged by collision during the process of fixing the germicidal device 6 to the vehicle to be decontaminated. The surface of the uv germicidal lamp fixture (64) must be provided with a flexible protective layer (65) to prevent collision damage to the decontaminated vehicle. The gasket 66 is formed by wrapping the four sides of the device substrate 67 with a polystyrene foam material, seals the vehicle to be decontaminated by the weight of the sterilization and disinfection device 6, and prevents the vehicle to be decontaminated from being damaged by collision. The seal 66 may also be formed of a polyurethane foam or wool top.

The sterilizing and disinfecting device 6 is provided with a microswitch 68 which controls the power switches of the heating and humidifying device 2, the air feeder 3 and the ultraviolet radiation preventing cover 9 of the automobile purifier, and when the sterilizing and disinfecting device 6 is arranged on a vehicle to be purified and touches the microswitch 68, the power supplies of the heating and humidifying device 2, the air feeder 3 and the ultraviolet radiation preventing cover 9 can be switched on.

As shown in fig. 7, 8, 9 and 10, the power supply and control system 8, which is composed of a control circuit 81 and a display 82, supplies power to each of the electric components and controls the operation and stop thereof. The power supply and control system 8 is powered on to first provide electric energy to the traction device 69 of the disinfection and sterilization apparatus 6 to connect the disinfection and sterilization apparatus 6 with the vehicle to be purified, and then the disinfection and purification operations can be performed on the vehicle to be purified.

As shown in fig. 17, the ultraviolet radiation prevention cover 9 prevents ultraviolet rays radiated from the ultraviolet germicidal lamp 61 from directly irradiating the eyes and skin of the surrounding person. An ultraviolet radiation-proof cover 9 is required to be arranged outside the sterilization and disinfection device 6, and is manufactured into a covering type structure to cover all door and window glass, front glass and rear glass of the vehicle to be purified, and the ultraviolet intensity at the position 30cm away from the window of the vehicle to be purified is required to be less than or equal to 5 muW/cm 2.

As shown in fig. 18, the ultraviolet radiation prevention cover 9 can also be made into an independent separated enclosure structure, and is not assembled with the sterilization and disinfection device 6, so as to enclose the vehicle to be purified and prevent ultraviolet radiation to the surrounding eyes and skin of people.

The ultraviolet radiation prevention cover 9 is made of ultraviolet-proof cloth or ultraviolet-proof plastic cloth. The ultraviolet radiation shield 9' of the enclosing structure can be made of rigid materials such as metal plates, artificial plates, plastic plates and paper plates besides ultraviolet cloth or ultraviolet plastic cloth. The ultraviolet radiation prevention cover 9 is controlled by the microswitch 68, and the microswitch 68 switches on the power supply of the traction device 91 of the ultraviolet radiation prevention cover 9, controls the ultraviolet radiation prevention cover 9 to ascend and descend, and covers or removes the vehicle to be purified. The ultraviolet radiation-proof cover 9' of the enclosing structure type is used for enclosing and removing the purified vehicle in an up-down lifting or horizontal folding mode. The power switch of the ultraviolet germicidal lamp 61 is linked with the ultraviolet radiation preventing cover 9 and is controlled by the ultraviolet radiation preventing cover 9, and only when all door glass, front glass and rear glass of the vehicle to be purified are covered by the ultraviolet radiation preventing cover 9 or the vehicle to be purified is enclosed, the ultraviolet germicidal lamp 61 can be lightened.

In the embodiment, the air in the vehicle is purified by using large-scale machine equipment outside the vehicle, and the purification work of all aspects of the air in the vehicle is completed at one time through comprehensive and specific mechanism design, so that common air pollutants in the vehicle can be effectively removed, the air in the vehicle is cleaned, and the riding comfort of the vehicle is improved.

Further, the invention provides an in-vehicle air purification method, which adopts the in-vehicle air purifier, and the method comprises the following steps:

first, the vehicle is prepared.

And opening the purified vehicle to a specified position, closing the power ventilation of the purified vehicle, closing the windows of the vehicle door, and leaving only a skylight on the ceiling or one window open.

In a second step, the decontamination engine is prepared and coupled to the vehicle to be decontaminated.

And scanning the two-dimensional code on the power supply and controller system 8, or manually operating, and switching on the power supplies of the sterilization and disinfection device 6, the electric valve 7, the ultraviolet radiation prevention cover 9 and the electric butterfly valve 41.

The sterile device 6 is controlled by the traction device 69 to be lifted and lowered to be connected with the vehicle to be purified, and an airtight sealing state is ensured. The microswitch 68 turns on the power of the heating and humidifying device 2, the blower 3 and the traction device 91 of the ultraviolet radiation prevention cover 9.

And thirdly, purifying the air in the vehicle.

The blower 3 is started to operate, clean air is sent into the vehicle to be purified through the blower pipeline 51, the air in the vehicle to be purified passes through the ozone filter 42, the formaldehyde filter 43, the TVOC filter 44 and the particulate matter filter 45 in the air purifying device 4 through the return air pipeline 52, air pollutants such as formaldehyde, TVOC, particulate matters and the like in the vehicle to be purified are removed, and the air in the vehicle to be purified is circularly purified.

Meanwhile, the traction device 91 of the ultraviolet radiation prevention cover 9 is started, so that the ultraviolet radiation prevention cover 9 covers or encloses the purified vehicle, and ultraviolet rays are prevented from radiating to the eyes and skin of people.

And fourthly, sterilizing and disinfecting.

Under the condition that the air in the vehicle to be purified is purified and kept clean, the ultraviolet lamp 61 and the ozone generator 62 are started, and the microorganisms such as bacteria, viruses and the like on the inner surface of the vehicle to be purified and in the air are killed by utilizing the synergistic action of ultraviolet rays and ozone. To ensureThe best sterilization and disinfection effect can be obtained, and the used ultraviolet radiation intensity is more than or equal to 300 mu W/cm²The irradiation dose is more than or equal to 100000 mu W.s/cm²。

And fifthly, removing residual ozone.

After the sterilization and disinfection are finished, the blower 3 is started to operate, so that the air in the vehicle to be purified passes through the ozone filter 42, the formaldehyde filter 43, the TVOC filter 44 and the particulate filter 45 in the air purification device 4, and the residual ozone after the air pollutants in the vehicle to be purified are removed, and the air pollutants such as formaldehyde, TVOC, particulate matters and the like in the vehicle to be purified are removed.

And sixthly, accelerating the release of pollutants at high temperature and high humidity.

The blower 3 is used for heating the damp and hot air generated by the heater 21 and the humidifier 22 in the humidifying device 2, and the damp and hot air is circulated through the air supply and return pipeline 5, so that the air in the vehicle to be purified reaches the temperature and humidity requirement that the optimal temperature is controlled between 35 ℃ and 55 ℃, the optimal relative humidity is controlled between 45% and 65%, and the release speed of pollutants in the vehicle to be purified is accelerated.

And seventhly, discharging water vapor.

The air on site is sucked into the purifier through the air inlet 13 and the electric butterfly valve 41, is purified by the air purifying device 4 and then is sent into the purified vehicle through the air supply pipeline 51, and the water vapor is discharged from the exhaust port 14 through the air return pipeline 52, so that the humidity in the vehicle is reduced.

And eighthly, accelerating the release of pollutants by high-temperature and high-intensity ultraviolet rays.

The ultraviolet germicidal lamp 61 is turned on to generate high-intensity ultraviolet rays, the blower 3 is used for heating hot air generated by the heater 21 in the humidifying device 2, the hot air circulates through the air supply and return duct 5, the air in the vehicle to be purified reaches the optimal temperature and is controlled between 35 ℃ and 55 ℃, and the release speed of pollutants in the vehicle to be purified is accelerated.

And step nine, purifying air in the vehicle.

The blower 3 operates, clean air is sent into the vehicle to be purified through the blower pipeline 51, the air in the vehicle to be purified passes through the ozone filter 42, the formaldehyde filter 43, the TVOC filter 44 and the particulate matter filter 45 in the air purifying device 4 through the return air pipeline 52, air pollutants such as formaldehyde, TVOC, particulate matters and the like in the vehicle to be purified are removed, and the air in the vehicle is circularly purified.

And step ten, finishing purification.

In this embodiment, the scheme that the user starts the air purifier in the vehicle in the code scanning manner may be that the user obtains the relevant information by scanning the two-dimensional code, and registers the relevant information on the network according to the relevant information. And the power supply is controlled by establishing connection with the air purifier in the vehicle through a corresponding network APP or other modes. The specific connection and control process is similar to the scheme of establishing intelligent control through a mobile phone and a network in the prior art, and is not described herein again.

In summary, in the embodiments of the present invention, the air inside the vehicle is purified by using large-scale equipment outside the vehicle, and the air inside the vehicle is purified at one time by comprehensive and specific mechanism design, so that common air pollutants inside the vehicle can be effectively removed, the air inside the vehicle can be cleaned, and the comfort level of the vehicle can be improved.

In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.

Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.

Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, any of the embodiments claimed in the claims can be used in any combination.

The various component embodiments of the invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. The present invention may also be embodied as apparatus or device programs (e.g., computer programs and computer program products) for performing a portion or all of the methods described herein. Such programs implementing the present invention may be stored on computer-readable media or may be in the form of one or more signals. Such a signal may be downloaded from an internet website or provided on a carrier signal or in any other form.

It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware.

While the foregoing is directed to embodiments of the present invention, it will be appreciated that various modifications, alterations, and adaptations of the invention may be made by those skilled in the art without departing from the spirit of the invention, and that such modifications, alterations, and adaptations are intended to be within the scope of the present application.

Claims

1. An in-vehicle air cleaner, characterized by comprising:

the device comprises a purifying machine body (1), a heating and humidifying device (2), a blower (3), an air purifying device (4), a blowing air return pipeline (5), a sterilizing and disinfecting device (6), an electric valve (7), a power supply and control system (8), an ultraviolet radiation prevention cover (9), an air inlet (13) and an air outlet (14);

the sterilization and disinfection device (6) is connected with the vehicle to be purified, the ultraviolet radiation cover (9) covers the vehicle to be purified, the air blower (3) heats and humidifies the air after passing through the heating and humidifying device (2), and then the air is sent into the vehicle to be purified through the air supply and return pipeline (5) to raise the temperature and humidity in the vehicle, so that the release of pollutants is accelerated; the air blower (3) sucks air through the air inlet (13), and exhausts partial air in the purified vehicle through the air outlet (14), so that the humidity of the air in the vehicle can be adjusted; the interior of the vehicle is sterilized and disinfected by starting the sterilizing and disinfecting device (6); then the air in the automobile to be purified is sent into an air purification device (4) through an air supply and return pipeline (5) by an air feeder (3), and then is circularly sent into the automobile to be purified through the air supply and return pipeline (5) to purify the air in the automobile;

the power supply and control system (8) is used for realizing power supply and control of each component; the electric valve (7) is used for controlling the working state of each component;

a first electric valve (71), a second electric valve (72) and a third electric valve (73) are arranged in the cavity of the electric valve (7) to control the air flowing direction; the installation position of the electric valve (7) is tightly connected with the heating and humidifying device (2) and the air purifying device (4);

when the second electric valve (72) and the third electric valve (73) are closed, the first electric valve (71) is opened, the blower (3) sends the hot and humid air generated in the heating and humidifying device (2) into the vehicle to be purified, and then the hot and humid air circularly enters the blower (3) through the first electric valve (71), so that the circular heating effect is achieved;

when the first electric valve (71) and the third electric valve (73) are closed, the second electric valve (72) is opened, air polluted in the purified vehicle flows through the air purification device (4) through the second electric valve (72) for purification, and then the clean air is conveyed into the purified vehicle by the blower to circularly purify the air in the purified vehicle;

the first electric valve (71) and the second electric valve (72) are closed, the third electric valve (73) is opened, air sucked from the air inlet (13) by the air blower (3) is sent into the vehicle to be purified through the clean air purified by the air purifying device (4), and water vapor is emptied from the air outlet (14) through the third electric valve (73), so that the relative humidity of the air in the vehicle to be purified is reduced.

2. The air cleaner according to claim 1, wherein the blower specifically includes:

the damp and hot air generated by the heating and humidifying device (2) is sent into the vehicle to be purified through an air supply pipeline (51) in an air supply and return pipeline (5), then enters a cavity of an electric valve (7) through an air return pipeline (52) in the air supply and return pipeline (5), and then enters the air feeder (3) again for circularly heating and humidifying, so that the air in the vehicle to be purified meets the preset temperature and humidity requirement;

clean air is conveyed into the purified vehicle through an air supply pipeline (51) in the air supply and return pipeline (5), and air polluted in the purified vehicle flows through an air purification device (4) through an air return pipeline (52) in the air supply and return pipeline (5) to be purified;

the air on site is sucked, the clean air purified by the air inlet (13) through the air purification device (4) is sent into a vehicle to be purified through the air supply blower (3) and the air supply pipeline (51) in the air supply and return pipeline (5), the water vapor enters the cavity of the electric valve (7) through the air return pipeline (52) in the air supply and return pipeline (5), and then is discharged from the air outlet (14) to adjust the humidity of the air in the vehicle.

3. The air cleaner according to claim 1, characterized in that the heating and humidifying device (2) comprises a heater (21) and a humidifier (22) for generating hot and humid air;

the humid and hot air is sent into the vehicle to be purified through an air supply pipeline (51) in an air supply and return pipeline (5) by using an air supply machine (3), enters a cavity of an electric valve (7) through an air return pipeline (52) in the air supply and return pipeline (5), and then enters the air supply machine (3), and the air in the vehicle to be purified reaches the set temperature and humidity requirement through cyclic heating and humidification;

the heater (21) uses a PTC ceramic heater or a heating wire heater; the humidifier (22) uses an oscillating humidifier, a PTC ceramic water heater or a natural evaporation humidifier.

4. The air cleaner according to claim 1, further comprising:

be provided with 4 kinds of filters that are equipped with different purifying material in air purification device (4), include: an ozone filter (42) for performing catalytic oxidative decomposition on the residual ozone after removing the air pollutants; a formaldehyde filter (43) for removing formaldehyde from the air; a TVOC filter (44) for removing TVOC in the air; a particulate filter (45) for removing particulate matters in the air in the vehicle and particulate matters possibly generated by the ozone filter (42), the formaldehyde filter (43) and the TVOC filter (44);

5. The air purifier as claimed in claim 1, wherein the supply air return duct (5) comprises a supply duct (51) and a return duct (52), and is made of stainless steel round tubes, aluminum alloy tubes, galvanized steel tubes, polyvinyl chloride tubes or polypropylene tubes; an insulating layer is additionally arranged on the air supply and return pipeline (5); the air supply and return pipeline (5) extends out along the horizontal direction in a fixed mode or can rotate horizontally by an angle larger than or equal to 90 degrees;

the joint of the air supply and return duct (5) and the sterilization and disinfection device (6) is connected by a first flexible duct (511) and a second flexible duct (521).

6. The air purifier according to claim 5, wherein the sterilizing and disinfecting device (6) comprises an ultraviolet sterilizing lamp (61), an ozone generator (62), a temperature and humidity detector (63), an ultraviolet sterilizing lamp protective frame (64), a sealing gasket (66), a device substrate (67), a microswitch (68), an air outlet of the air supply pipeline (51) and the tail end of the air return pipeline (52);

the sterilization and disinfection device (6) is assembled and fixed on a device substrate (67) to form an integral structure, and the lifting is controlled by a traction device (69);

the sterilization and disinfection device (6) is provided with a microswitch (68) for controlling the power switches of the heating and humidifying device (2), the air feeder (3) and the ultraviolet radiation prevention cover (9); when the sterilizing and disinfecting device (6) is arranged on a vehicle to be purified and touches the microswitch (68), the power supplies of the heating and humidifying device (2), the air feeder (3) and the ultraviolet radiation proof cover (9) can be switched on.

7. The air cleaner according to claim 1, wherein the power and control system (8) comprises a control circuit (81) and a display (82) for supplying power to the various electrical components and controlling the operation and stop thereof;

the power supply and control system (8) is connected with the power supply, firstly provides electric energy for the sterilization and disinfection device (6) to connect the sterilization and disinfection device (6) with the vehicle to be purified, and then performs sterilization, disinfection and purification operations on the interior of the vehicle to be purified.

8. The air cleaner of claim 1, wherein the ultraviolet radiation protection shield further comprises:

the ultraviolet radiation prevention cover (9) is a covering structure and covers all door and window glass, front glass and rear glass of the purified vehicle; the fabric is made of ultraviolet-proof cloth, ultraviolet-proof plastic cloth or rigid material;

the ultraviolet radiation prevention cover (9) is controlled by a microswitch (68), the microswitch (68) is connected with the power supply of a traction device (91) of the ultraviolet radiation prevention cover (9), and the ultraviolet radiation prevention cover (9) is controlled to lift up and down to cover or remove from the purified vehicle; or a power switch of the ultraviolet radiation prevention cover (9) is manually controlled;

the power switch of the ultraviolet germicidal lamp (61) is in linkage relation with the ultraviolet radiation-proof cover (9) and is controlled by the ultraviolet radiation-proof cover (9), and the ultraviolet germicidal lamp (61) in the sterilizing device can be lightened only when all door glass, front glass and rear glass of the vehicle to be purified are covered by the ultraviolet radiation-proof cover (9) or the vehicle to be purified is enclosed; or a power switch for manually controlling the ultraviolet germicidal lamp (61).

9. An in-vehicle air purification method characterized by using the in-vehicle air purifier according to any one of claims 1 to 8, the method comprising:

moving the decontaminated vehicle to a designated location;

a user switches on the power supplies of the sterilization and disinfection device (6), the electric valve (7), the ultraviolet radiation prevention cover (9) and the electric butterfly valve (41) in the air purification device (4) by scanning the power supply of the air purifier in the vehicle and the two-dimensional code on the controller system (8) or by manual operation;

the first electric valve (71) and the second electric valve (72) are closed, the third electric valve (73) is opened, air sucked from the air inlet (13) by the air blower (3) is sent into a vehicle to be purified through the purified clean air purified by the air purification device (4), and water vapor is emptied from the air outlet (14) through the third electric valve (73), so that the relative humidity of the air in the vehicle to be purified is reduced;

the sterilization and disinfection device (6) is controlled by a traction device (69) to lift and be connected with a vehicle to be purified, and a microswitch (68) is connected with the power supply of the heating and humidifying device (2), the air feeder (3) and the traction device (91) of the ultraviolet radiation prevention cover (9);

the blower (3) heats the damp and hot air generated by the heater (21) and the humidifier (22) in the humidifying device (2) and circulates through the air supply and return pipeline (5), so that the air in the purified vehicle reaches the temperature and humidity requirement that the optimal temperature is controlled between 35 ℃ and 55 ℃, and the optimal relative humidity is controlled between 45% and 65%;

clean air is sent into the vehicle to be purified through the air supply pipeline (51), so that the air in the vehicle to be purified passes through the air purification device (4) through the air return pipeline (52), pollutants in the air in the vehicle to be purified are removed, and the air in the vehicle to be purified is circularly purified; the air pollutants include: formaldehyde, TVOC or particulates;

starting a traction device (91) of the ultraviolet radiation prevention cover (9) to enable the ultraviolet radiation prevention cover (9) to cover or enclose the purified vehicle; under the condition that the air in the vehicle to be purified is purified and kept clean, an ultraviolet lamp (61) and an ozone generator (62) are started; the hot air generated by a heater (21) in the heating and humidifying device (2) is circulated through a blowing return air duct (5) by a blower (3);

on-site air is sucked into the purifier through the air inlet (13) and the electric butterfly valve (41), is purified by the air purifying device (4) and then is sent into a vehicle to be purified through the air supply pipeline (51), and water vapor is discharged through the air return pipeline (52) and then is discharged through the air outlet (14);

after purification is finished, the ultraviolet radiation prevention cover (9) is folded, the sterilization and disinfection device (6) is separated from the vehicle to be purified, and the power supply and the control system (8) are turned off.