A vehicle-mounted air purifier

Abstract

The present invention discloses a vehicle-mounted air purifier, comprising a housing and a filter device, wherein the sides of the housing are respectively provided with an air inlet filter and an air outlet filter, the filter device is located in the housing, the filter device comprises a spiral air inlet pipe, an air inlet fan, an expansion port and a filter layer, a through hole is provided at the top of the spiral air inlet pipe, the air inlet fan is installed in the through hole, the spiral air inlet pipe has an air inlet, the air inlet is directly opposite to the air inlet filter, the expansion port comprises an air inlet end and an air outlet end, the cross-sectional area of ​​the expansion port gradually increases from the air inlet end to the air outlet end, the air inlet end is connected to the top of the spiral air inlet pipe and communicated with the through hole, and the filter layer is installed at the air outlet end. By setting the expansion port, the cross-sectional area of ​​the air flow gradually increases from the air inlet end to the air outlet end, and according to the Bernoulli equation, the flow velocity gradually decreases along the air flow direction within the subsonic flow range, the impact force on the filter layer is reduced, the damage to the filter layer is reduced, and the utilization rate of the filter layer is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of air purification, and in particular to a vehicle-mounted air purifier. Background Art

[0002] Air pollution, also known as atmospheric pollution, not only harms plants and climate, but more importantly, it directly and indirectly affects people's quality of life and health. Studies have shown that atmospheric pollution, especially PM2.5, significantly increases the mortality rate of diseases caused by respiratory and circulatory systems. Therefore, improving air quality is urgent.

[0003] Whether from patents, products launched by domestic manufacturers or sales, it can be clearly seen that the development of car air purifiers in my country is very rapid. Abroad, car air purifiers have developed very maturely in ultraviolet sterilization and air filtration, while plasma technology is still in its infancy in the field of in-car purification but is developing rapidly. Although foreign car air purifiers are expensive, they have strong air purification, sterilization and dust removal capabilities, and are very diversified. They can launch a variety of air purifiers according to different consumer classes, and they also have many kinds of products in the market with low price ranges. Therefore, the penetration rate of foreign car air purifiers is much higher than that in China. In my country, the research on car air purifiers started late, and some large companies have not yet entered the field of car air purifiers. However, in recent years, the quality of air in the car has received more and more attention from everyone, so major brands have launched a variety of air purifiers, and at the same time, the sales growth rate of air purifiers is also very amazing. However, the purification technology of my country's car air purifiers is not mature enough, the purification efficiency is not high enough, and there are certain defects in product design. Moreover, people's lives are becoming more and more convenient, and various electrical appliances are becoming more and more intelligent. In order to improve the user experience and attract consumers, car air purifiers are becoming more and more intelligent. Therefore, it is urgent to learn from foreign advanced technologies and combine the specific situation of air pollution in my country to develop intelligent car air purifiers with high efficiency, low energy consumption, low noise and in line with my country's car air purifier standards.

[0004] The Chinese patent with announcement number CN207697437U discloses an intelligent vehicle-mounted air purifier, which includes a body, a front panel, a shell, a centrifugal fan and a filter system. The body is a shell structure with an opening at one end, a pair of connecting blocks are provided on the inner side of the body, the shell is installed on the connecting blocks by bolts, the top of the shell is connected to the filter system, the centrifugal fan is installed on the shell below the filter system, an ultraviolet lamp is installed on the side wall of the shell between the centrifugal fan and the filter system, the front panel is snapped on the side of the shell, and the bottom of the body is provided with an air outlet, which can effectively block and remove a variety of harmful substances. However, the internal flow resistance and noise control of the device need to be improved. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a vehicle-mounted air purifier. The structure of the vehicle-mounted air purifier is improved and designed by using resistance reduction and noise reduction technology. Starting from the structure, the resistance and noise of each component are reduced, the purification efficiency of the purifier is improved, the structure is simple, and it is easy to implement.

[0006] The technical solution of the present invention is: a vehicle-mounted air purifier, comprising a shell and a filter device, the side of the shell is respectively provided with an air inlet filter and an air outlet filter, the filter device is located in the shell, the filter device comprises a spiral air inlet pipe, an air inlet fan, an expansion port and a filter layer, a through hole is provided at the top of the spiral air inlet pipe, the air inlet fan is installed in the through hole, the spiral air inlet pipe has an air inlet, the air inlet is directly opposite to the air inlet filter, the expansion port comprises an air inlet end and an air outlet end, the cross-sectional area of ​​the expansion port gradually increases from the air inlet end to the air outlet end, the air inlet end is connected to the top of the spiral air inlet pipe and communicated with the through hole, and the filter layer is installed at the air outlet end. By setting the spiral air inlet pipe, the direction of the airflow is changed, the flow resistance of the airflow is reduced, and the noise is reduced. By setting the expansion port, the cross-sectional area of ​​the airflow is gradually increased from the air inlet end to the air outlet end. According to the Bernoulli equation, the flow velocity gradually decreases along the airflow direction within the subsonic flow range, the impact force on the filter layer is reduced, the damage to the filter layer is reduced, and the utilization rate of the filter layer is improved.

[0007] Furthermore, the filter layer includes an activated carbon filter and a HEPA filter.

[0008] Furthermore, the top of the spiral air inlet pipe is provided with an annular protrusion, the through hole is provided in the annular protrusion, the air inlet fan is installed in the annular protrusion, the annular protrusion is connected to the air inlet end by threads, the expansion port is connected to the spiral air inlet pipe by threads, the operation is simple, and the installation is convenient.

[0009] Furthermore, the shell includes a base, side panels and a top cover, and the base, side panels and top cover are respectively connected by bolts. The shell adopts an assembled connection, which is convenient for disassembly to clean and replace the filter inside the shell.

[0010] Furthermore, the air inlet filter and the air outlet filter are respectively arranged on the side plates in an arc shape, and the filter holes of the air inlet filter and the air outlet filter have a diameter of 3-4mm. The air inlet filter and the air outlet filter are distributed on the opposite sides, and the air inlet and air outlet air flows do not affect each other, which reduces the blocking effect of the air inlet and air outlet on the air flow, that is, the resistance of the air inlet and air outlet is reduced, and the filter hole diameters of the air inlet filter and the air outlet filter are large enough, so that the area that hinders the gas flow is relatively small, so that the resistance is reduced, the degree of internal smoothness is reduced, and the flow energy loss of the air flow is reduced, which indirectly improves the working efficiency of the air intake fan, saves power, and reduces the noise level; the arc-shaped side plate is conducive to further reducing wind resistance and noise.

[0011] Furthermore, the vehicle-mounted air purifier further includes a guide groove, which is installed on the side plate and is arc-shaped, with one end of the guide groove close to the air inlet filter and the other end close to the air outlet filter. By setting the guide groove, the wind at the air inlet is guided away, forming a certain negative pressure so that the air inlet filter can take in more wind.

[0012] Furthermore, an anti-skid pad is provided on the bottom surface of the base, and the anti-skid pad serves to increase friction.

[0013] Furthermore, the vehicle-mounted air purifier also includes an air humidifier, which is installed at the bottom of the shell and located on one side of the spiral air intake pipe. The air humidifier is used to humidify the air, which can increase the user's comfort and improve the purifier's purification efficiency for particulate matter.

[0014] Furthermore, the vehicle-mounted air purifier also includes a negative ion generator, which is installed at the bottom of the housing and in front of the air outlet filter. The negative ion generator is used to perform secondary purification on the air. The negative ion generator performs secondary purification on the initially purified air, has a high purification effect on microorganisms, particulate matter and chemical substances, and improves the purification efficiency of the purifier.

[0015] Furthermore, the vehicle-mounted air purifier also includes a control switch and a power supply assembly, wherein the power supply assembly is installed at the bottom of the shell, and the power supply assembly is electrically connected to the intake fan, and the control switch is installed on the side of the shell, and the control switch is electrically connected to the power supply assembly.

[0016] The working principle of the above-mentioned vehicle air purifier is: turn on the control switch, the power supply component supplies power to the intake fan, the intake fan starts working, and the outside air passes through the air inlet filter and the air inlet into the spiral intake pipe, and then is filtered through the expansion port through the activated carbon filter and the HEPA filter in turn. The filtered air is discharged to the outside through the outlet filter through the internal and external pressure difference.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The vehicle-mounted air purifier of the present invention distributes the air inlet filter and the air outlet filter on opposite sides, so that the intake airflow and the outlet airflow do not affect each other, thereby reducing the blocking effect of the air inlet and outlet on the airflow, that is, the resistance of the air inlet and outlet is reduced, and the filter hole diameters of the air inlet filter and the air outlet filter are large enough so that the area that hinders the gas flow is relatively small, thereby reducing the resistance, reducing the degree of internal smoothness and turbulence, and reducing the flow energy loss of the airflow, thereby indirectly improving the working efficiency of the intake fan, saving power, and reducing the noise level; the arc-shaped side panels are beneficial to further reduce wind resistance and reduce noise.

[0019] The vehicle-mounted air purifier of the present invention can increase the user's comfort and improve the purification efficiency of the purifier on particulate matter by arranging an air humidifier to humidify the air; and can provide a negative ion generator to perform secondary purification on the initially purified air, thereby having a high purification effect on microorganisms, particulate matter and chemical substances, thereby improving the purification efficiency of the purifier. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of the vehicle-mounted air purifier of the present invention.

[0021] Figure 2 It is a cross-sectional view of the vehicle-mounted air purifier of the present invention.

[0022] Figure 3 It is a cross-sectional view from another perspective of the vehicle-mounted air purifier of the present invention.

[0023] Figure 4 It is an exploded view of the filtering device of the present invention. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below in conjunction with examples, but the embodiments of the present invention are not limited thereto.

[0025] Example 1

[0026] like Figure 1 and Figure 3 As shown, this embodiment provides a vehicle-mounted air purifier, including a housing 1, a filter device, a guide groove 2, a control switch 3 and a power supply assembly.

[0027] like Figure 1 , Figure 2 and Figure 3 As shown, the shell includes a base 5, a side plate 6 and a top cover 7, and the base, the side plate and the top cover are connected by bolts respectively. The shell adopts an assembled connection, which is convenient for disassembly to clean and replace the filter inside the shell; the air inlet filter 8 and the air outlet filter 9 are respectively arranged on the side plates, and the air inlet air flow and the air outlet air flow do not affect each other, reducing the blocking effect of the air inlet and outlet on the air flow, that is, the resistance of the air inlet and outlet is reduced, the degree of internal smooth turbulence is reduced, and the flow energy loss of the air flow is reduced, which indirectly improves the working efficiency of the air intake fan, saves power, and reduces the noise level; the side plate is arc-shaped, which is conducive to further reducing wind resistance and noise; the filter hole diameter of the air inlet filter and the air outlet filter is 3-4mm. In this embodiment, the filter hole diameter is 3mm, and the filter hole diameter is large enough to make the area that hinders the gas flow relatively small, so that the resistance is reduced. Of course, in other embodiments, the filter hole diameter can also be other values, as long as this purpose can be achieved, and they are not listed here one by one. The bottom surface of the base is provided with an anti-skid pad 10, which increases the friction between the base and the placement surface to prevent the purifier from slipping.

[0028] like Figure 2 and Figure 4 As shown, the filtering device is located in the shell, and the filtering device includes a spiral air inlet pipe 11, an air inlet fan 12, an expansion port 13 and a filter layer. The spiral air inlet pipe is fixed to the base by bolts. The spiral air inlet pipe has an air inlet 14, and the air inlet is directly opposite to the air inlet filter. The expansion port includes an air inlet end 15 and an air outlet end 16. The top of the spiral air inlet pipe is provided with an annular protrusion 17, and the annular protrusion is provided with a through hole 18, which is connected to the air inlet end. The air inlet fan is installed in the annular protrusion, and the annular protrusion is connected to the air inlet end by threads. The expansion port is trumpet-shaped, and the cross-sectional area of ​​the expansion port gradually increases from the air inlet end to the air outlet end. The filter layer includes an activated carbon filter 19 and a HEPA filter 20, and the activated carbon filter and the HEPA filter are installed at the air outlet end from bottom to top.

[0029] like Figure 3 As shown, the guide groove is installed on the side plate. The guide groove is arc-shaped, with one end of the guide groove close to the air inlet filter and the other end close to the air outlet filter. By setting the guide groove, the wind at the air inlet is guided away, forming a certain negative pressure so that the air inlet filter can take in more wind, thereby improving the purification efficiency of the purifier.

[0030] The power supply assembly is installed on the base, the power supply assembly is electrically connected to the air intake fan, the control switch is installed on the side wall, and the control switch is electrically connected to the power supply assembly.

[0031] The working principle of the above-mentioned vehicle air purifier is: turn on the control switch, the power supply component supplies power to the intake fan, the intake fan starts working, and the outside air passes through the air inlet filter and the air inlet into the spiral intake pipe, and then is filtered through the expansion port through the activated carbon filter and the HEPA filter in turn. The filtered air is discharged to the outside through the outlet filter through the internal and external pressure difference.

[0032] Example 2

[0033] like Figure 3 As shown, the difference between this embodiment and embodiment 1 is that the vehicle-mounted air purifier also includes an air humidifier 22, which is installed on the base by bolts and is located on one side of the spiral air intake pipe. The air humidifier is used to humidify the air, which can increase the user's comfort and improve the purifier's purification efficiency for particulate matter.

[0034] Example 3

[0035] like Figure 3As shown, the difference between this embodiment and embodiment 1 is that the vehicle-mounted air purifier further includes a negative ion generator 23, which is bolted to the base and located in front of the air outlet filter, and the negative ion generator is used to perform secondary purification on the air. The negative ion generator performs secondary purification on the initially purified air, and has a high purification effect on microorganisms, particulate matter and chemical substances, thereby improving the purification efficiency of the purifier.

[0036] As described above, the present invention can be better implemented. The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention; that is, all equivalent changes and modifications made according to the content of the present invention are covered by the scope of protection required by the claims of the present invention.

Claims

1. A vehicle-mounted air purifier, characterized in that: It comprises a shell and a filter device, wherein the sides of the shell are respectively provided with an air inlet filter and an air outlet filter, the filter device is located in the shell, the filter device comprises a spiral air inlet pipe, an air inlet fan, an expansion port and a filter layer, a through hole is provided at the top of the spiral air inlet pipe, the air inlet fan is installed in the through hole, the spiral air inlet pipe has an air inlet, the air inlet is directly opposite to the air inlet filter, the expansion port comprises an air inlet end and an air outlet end, the cross-sectional area of ​​the expansion port gradually increases from the air inlet end to the air outlet end, the air inlet end is connected to the top of the spiral air inlet pipe and communicated with the through hole, and the filter layer is installed at the air outlet end; The shell comprises a base, a side plate and a top cover, and the air inlet filter and the air outlet filter are respectively arranged on the side plates opposite to each other; the filter layer comprises an activated carbon filter and a HEPA filter.

2. The vehicle-mounted air purifier according to claim 1, characterized in that: The top of the spiral air inlet pipe is provided with an annular protrusion, a through hole is provided in the annular protrusion, an air inlet fan is installed in the annular protrusion, and the annular protrusion is connected to the air inlet end through a thread.

3. The vehicle-mounted air purifier according to claim 1, characterized in that: The base, the side plates and the top cover are connected respectively by bolts.

4. The vehicle-mounted air purifier according to claim 3, characterized in that: The filter holes of the air inlet filter and the air outlet filter have a diameter of 3-4 mm.

5. The vehicle-mounted air purifier according to claim 3, characterized in that: It also includes a guide groove, which is installed on the side plate. The guide groove is arc-shaped, one end of the guide groove is close to the air inlet filter, and the other end is close to the air outlet filter.

6. The vehicle-mounted air purifier according to claim 3, characterized in that: The bottom surface of the base is provided with an anti-skid pad.

7. The vehicle-mounted air purifier according to claim 1, characterized in that: The utility model also comprises an air humidifier, which is installed at the bottom of the shell body and located at one side of the spiral air inlet pipe, and is used for humidifying the air.

8. The vehicle-mounted air purifier according to claim 1, characterized in that: It also includes a negative ion generator, which is installed at the bottom of the shell and located in front of the air outlet filter. The negative ion generator is used for secondary purification of the air.

9. The vehicle-mounted air purifier according to claim 1, characterized in that: It also includes a control switch and a power supply assembly. The power supply assembly is installed at the bottom of the shell, and the power supply assembly is electrically connected to the air intake fan. The control switch is installed on the side wall, and the control switch is electrically connected to the power supply assembly.

Images