Vehicle-mounted air purification device

Abstract

The utility model discloses a vehicle-mounted air purification device which comprises a photocatalysis unit and a wind scooper, the wind scooper is provided with an air inlet end, a separation cavity and an air exhaust end used for being communicated with a compartment air conditioner air duct, the air inlet end and the air exhaust end are respectively communicated with the separation cavity, and the wind scooper is further provided with an output control electrode used for being electrically connected with an automobile air conditioner control system. The photocatalytic unit comprises a photocatalytic foamed ceramic plate with a photocatalyst on the surface and an ultraviolet light source for irradiating ultraviolet light to the surface of the photocatalytic foamed ceramic plate, an input control electrode is arranged on the photocatalytic unit, and the input control electrode is used for being electrically connected with the output control electrode and the ultraviolet light source. The photocatalytic unit adopts the foamed ceramic plate as a carrier of the photocatalyst, the porous structure formed by the foamed ceramic plate is beneficial to full contact with air, and the front irradiation of the ultraviolet light source on the photocatalyst is combined, so that the purification effect is improved, the odor in the vehicle can be effectively purified, and the bactericidal effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of air purification devices, and in particular to a vehicle-mounted air purification device. Background Technology

[0002] The air conditioning ducts of a car primarily use filters to filter incoming air or recirculated air. These filters mainly remove large particles and have little to no purification capability. Therefore, over time, cars often develop acidic or musty odors, especially in commercial vehicles and during rainy seasons. When this happens, professional deodorization at a car detailing shop is usually necessary, which is expensive and the odor-reducing effect is short-lived.

[0003] Chinese Patent Document No. CN118927958A, published on November 12, 2024, discloses an air purification device and a vehicle-mounted air purification equipment, comprising: a frame, a filter element, a photo-sterilization component, and a drive control module. The filter element and the photo-sterilization component are arranged sequentially within the frame according to the airflow direction; the surface of the filter element is coated with a MOF (Metal-Oxide-Factory) adsorption catalytic coating. The drive control module is electrically connected to the photo-sterilization component and is used to adjust the power of the photo-sterilization component according to a received control signal. The filter element in this structure adopts a honeycomb pore structure. During the rapid passage of air through the honeycomb pores, the amount of air actually adsorbed is very small. Simultaneously, the photo-sterilization component irradiates and sterilizes the flowing air, but its effect is quite weak; therefore, the actual purification effect of this structure is minimal. Utility Model Content

[0004] The purpose of this invention is to provide a vehicle air purification device with a reasonable structure, high purification efficiency, and convenient photocatalytic unit replacement.

[0005] The purpose of this utility model is achieved as follows:

[0006] A vehicle-mounted air purification device includes a photocatalytic unit and an air guide shroud. The air guide shroud has an air inlet, a cavity, and an exhaust end for communicating with the vehicle's air conditioning duct. The air inlet and exhaust ends are respectively connected to the cavity. The air guide shroud also has an output control electrode for electrical connection with the vehicle's air conditioning control system. The photocatalytic unit is disposed in the cavity and includes a photocatalytic foam ceramic plate with a photocatalyst surface and an ultraviolet light source that irradiates ultraviolet light onto the surface of the photocatalytic foam ceramic plate. The photocatalytic foam ceramic plate is permeable on both sides. The photocatalytic unit has an input control electrode for electrical connection with the output control electrode and the ultraviolet light source.

[0007] The objective of this invention can also be achieved by the following technical measures:

[0008] As a more specific embodiment, the ultraviolet light source is located on the windward side of the photocatalytic foam ceramic plate.

[0009] The ultraviolet light source includes a grid plate and ultraviolet LED lamps. The ultraviolet LED lamps are arranged on the side of the grid plate facing the photocatalytic foam ceramic plate and are offset from the grid holes of the grid plate.

[0010] As a further embodiment, the output control electrode is disposed within the cavity, the photocatalytic unit has a frame, the input control electrode is disposed on the frame, an opening is provided on one side of the cavity, the photocatalytic unit is inserted into the cavity through the opening, and the input control electrode and the output control electrode are in conductive contact.

[0011] As a further solution, the input control electrode and the output control electrode are connected by plugging, pressing, or magnetic attraction to achieve quick connection between the input control electrode and the output control electrode.

[0012] As a further solution, a baffle is provided on the opening of the cavity, and the baffle is fastened to the air guide shroud or connected by screws to block the photocatalytic unit; the air inlet end is provided with an external circulation air inlet and an internal circulation air inlet, and a first valve is provided between the external circulation air inlet and the internal circulation air inlet in the air inlet end, and the first valve selectively blocks the external circulation air inlet and the internal circulation air inlet.

[0013] As a further solution, a filter screen is also provided inside the cavity on the windward side corresponding to the photocatalytic unit to protect the photocatalytic unit and prevent particulate matter pollution.

[0014] As a further embodiment, the photocatalytic foam ceramic plate comprises a foam ceramic plate and a titanium dioxide surface layer. The surface of the foam ceramic plate has several breathable pores, and the titanium dioxide surface layer is formed by sintering titanium dioxide onto the surface of the foam ceramic plate. The porous structure of the foam ceramic plate allows air to flow through its interior for a longer period, thus more effectively removing harmful substances from the air and more thoroughly killing bacteria.

[0015] As a further embodiment, the frame is a general frame, with the photocatalytic foam ceramic plate and the grid plate jointly disposed inside the general frame; alternatively, the frame includes a first frame and a second frame, each independently disposed, with the photocatalytic foam ceramic plate and the grid plate disposed inside the first frame and the second frame, respectively; the cavities are respectively provided for the photocatalytic foam ceramic plate and the grid plate, with the photocatalytic foam ceramic plate and the grid plate disposed within the first cavity and the second cavity, respectively. Since the ultraviolet light source has a long service life, separating it from the photocatalytic foam ceramic plate allows for subsequent replacement of the photocatalytic foam ceramic plate independently. Alternatively, manufacturing the ultraviolet light source and the photocatalytic foam ceramic plate together for overall replacement ensures that the photocatalytic foam ceramic plate is used in conjunction with an ultraviolet light source for optimal irradiation.

[0016] As a further solution, the surface of the main frame or the first frame is provided with shock-absorbing edging to reduce the vibration generated on the photocatalytic foam ceramic plate during vehicle operation and to protect the photocatalytic foam ceramic plate.

[0017] The beneficial effects of this utility model are as follows:

[0018] (1) This utility model applies photocatalytic purification technology to the air conditioning duct of automobiles. Furthermore, the photocatalytic unit uses foam ceramic plate as the carrier of photocatalyst. The porous structure formed by the foam ceramic plate is conducive to full contact with air. Combined with the ultraviolet light source irradiating the photocatalyst from the front, the purification effect is improved, which can effectively purify the odor in the car and play a bactericidal role.

[0019] (2) The air guide shroud of this utility model is provided with an output control electrode in the cavity and an input control electrode on the photocatalytic unit. After the photocatalytic unit is inserted into the cavity as an independent structure, the electrode can be connected and used in conjunction with the air conditioning system, which is convenient to disassemble and assemble. Attached Figure Description

[0020] Figure 1 This is a cross-sectional and exploded structural diagram of the first embodiment of the present invention.

[0021] Figure 2 for Figure 1 Schematic diagram of the assembled structure.

[0022] Figure 3 This is a schematic diagram of the photocatalytic unit structure in the first embodiment of this utility model.

[0023] Figure 4 This is a schematic diagram of the structure of an automotive air conditioning duct system according to the present invention.

[0024] Figure 5 This is a schematic diagram of another automotive air conditioning duct system according to the present invention.

[0025] Figure 6 This is a cross-sectional and exploded structural diagram of the second embodiment of the present invention.

[0026] Figure 7 for Figure 6 Schematic diagram of the assembled structure.

[0027] Figure 8 This is a schematic diagram of another embodiment of the photocatalytic foam ceramic plate in this utility model. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0029] Example 1, see Figures 1-3 and Figure 4 or Figure 5 As shown, an in-vehicle air purification device includes a photocatalytic unit 10 and an air guide shroud 4. The air guide shroud 4 has an air inlet end 41, a cavity 43, and an exhaust end 42 for communicating with the vehicle's air conditioning duct 5. The air inlet end 41 and the exhaust end 42 are respectively connected to the cavity 43. The air guide shroud 4 is also provided with an output control electrode 44 for electrical connection with the vehicle's air conditioning control system 9. The photocatalytic unit 10 is disposed in the cavity 43. The photocatalytic unit 10 includes a photocatalytic foam ceramic plate 1 with a photocatalyst surface and an ultraviolet light source that irradiates ultraviolet light onto the surface of the photocatalytic foam ceramic plate 1. The two sides of the photocatalytic foam ceramic plate 1 are permeable. The photocatalytic unit 10 is provided with an input control electrode 22 for electrical connection with the output control electrode 44 and the ultraviolet light source.

[0030] The ultraviolet light source is located on the windward side of the photocatalytic foam ceramic plate 1.

[0031] The ultraviolet light source includes a grid plate 21 and ultraviolet LED lamps 2. The ultraviolet LED lamps 2 are disposed on the side of the grid plate 21 facing the photocatalytic foam ceramic plate 1 and are offset from the grid holes 211 of the grid plate 21. Several ultraviolet LED lamps 2 are provided, and their number and irradiation area should be sufficient to irradiate the effective working area of ​​the photocatalytic foam ceramic plate 1. The ultraviolet LED lamps 2 are preferably point light sources. More preferably, the wavelength of the ultraviolet LED lamps 2 is 365nm. Using ultraviolet LED lamps 2 in the UVA band can improve photoelectric efficiency and reduce energy loss. The wavelength of the ultraviolet light emitted by the ultraviolet LED lamps 2 is 280–390nm, and can be a single wavelength or a mixture of wavelengths.

[0032] The photocatalytic foam ceramic plate 1 includes a foam ceramic plate and a titanium dioxide surface layer. The surface of the foam ceramic plate is provided with a number of breathable pores, and the titanium dioxide surface layer is formed by sintering titanium dioxide on the surface of the foam ceramic plate.

[0033] The photocatalytic foam ceramic plate 1 has an open-cell ratio of 70%–90% and a pore density of 8–60 ppi. Preferably, but not limitingly, the photocatalytic foam ceramic plate 1 uses an alumina-based foam support as an open-cell foam structure, and the photocatalyst is a TiO2 photocatalyst supported on an alumina-based foam support. In the photocatalyst, TiO2 grains are embedded and dispersed on the outer surface of the photocatalyst, and more than 70% of the TiO2 grains on the outer surface of the photocatalyst have a particle size of 5–50 μm.

[0034] The photocatalytic foam ceramic plate 1 and the ultraviolet light source of the aforementioned photocatalytic unit 10 are existing products. Their specific performance, process and materials can be found in two patent documents filed by our company: CN214051153U (announcement date August 27, 2021, title: Photocatalytic Unit and Air Purifier) ​​and CN 110871061B (July 26, 2022, title: A Photocatalytic Unit and Its Photocatalytic Method).

[0035] The output control electrode 44 is disposed in the cavity 43. The photocatalytic unit 10 is provided with a frame. The input control electrode 22 is disposed on the frame. An opening is provided on one side of the cavity 43. The photocatalytic unit 10 is inserted into the cavity 43 through the opening. The input control electrode 22 and the output control electrode 44 are in conductive contact.

[0036] The input control electrode 22 and the output control electrode 44 are connected to each other by plugging, pressing, or magnetic attraction.

[0037] A baffle is provided on the opening of the cavity 43. The baffle is fastened to the air guide shroud 4 or connected by screws to block the photocatalytic unit 10. The air inlet 41 is provided with an external circulation air inlet 411 and an internal circulation air inlet 412. A first valve 45 is provided in the air inlet 41 between the external circulation air inlet 411 and the internal circulation air inlet 412. The first valve 45 selectively blocks the external circulation air inlet 411 and the internal circulation air inlet 412.

[0038] A filter 3, which is a HEAP filter, is also provided inside the cavity 43 on the windward side corresponding to the photocatalytic unit 10. The HEAP filter can filter large particles such as dust, avoiding contamination of the photocatalytic unit and affecting its purification effect.

[0039] The frame is the total frame 101, and the photocatalytic foam ceramic plate 1 and the grid plate 21 are together disposed on the inner side of the total frame 101.

[0040] The cavity 43 is provided with a filter cavity 432 and a first cavity 431 along the windward direction. The filter screen 3 is disposed in the filter cavity 432, and the photocatalytic unit 10 is disposed in the filter cavity 432. The filter cavity 432 and the first cavity 431 are respectively provided with a filter screen insertion port and a first insertion port on their outer sides. The filter screen insertion port and the first insertion port are respectively provided with a filter screen baffle 47 and a photocatalytic unit baffle 46.

[0041] The photocatalytic foam ceramic plate 1 is rectangular or circular (rectangular in this embodiment).

[0042] Among them, combined Figure 4 As shown, the vehicle air conditioning duct 5 is equipped with an evaporator 7, a heater 8, a glass air vent, and a car air vent. The heater 8, the glass air vent, and the car air vent are respectively equipped with a second valve 51, a third valve 52, and a fourth valve 53. The second valve 51 is used to block the heater 8 or guide air through it. The third valve 52 can open or block the glass air vent, and the fourth valve 53 can open or block the car air vent. A fan 6 is also provided between the exhaust end 42 of the air guide hood 4 and the vehicle air conditioning duct 5. The fan 6 is electrically connected to the vehicle air conditioning control system 9. In this embodiment, the first valve 45, the second valve 51, the third valve 52, and the fourth valve 53 are each controlled by a motor, and the motors of each valve are electrically connected to the vehicle air conditioning control system 9. The output control electrode 44 is connected in parallel with the fan 6, and the ultraviolet light source illuminates when the fan 6 starts.

[0043] Or, combine Figure 5 As shown, with Figure 4 The difference lies in the following: the fan 6 is located at the air inlet 41 of the air guide shroud 4, and the air outlet 42 of the air guide shroud 4 is directly connected to the vehicle's air conditioning duct 5. The output control electrode 44 can be independently electrically connected to the automotive air conditioning control system 9. The automotive air conditioning control system 9 can be designed with a control circuit for the illumination of the ultraviolet light source, can start independently of the fan 6, and can be equipped with a detection circuit (such as a current detection circuit) to determine whether the ultraviolet light source is damaged. If it is damaged, an alarm signal will be issued to remind the user to replace it.

[0044] Example 2, see Figures 4 to 7As shown, an in-vehicle air purification device includes a photocatalytic unit 10 and an air guide shroud 4. The air guide shroud 4 has an air inlet end 41, a cavity 43, and an exhaust end 42 for communicating with the vehicle's air conditioning duct 5. The air inlet end 41 and the exhaust end 42 are respectively connected to the cavity 43. The air guide shroud 4 is also provided with an output control electrode 44 for electrical connection with the vehicle's air conditioning control system 9. The photocatalytic unit 10 is disposed in the cavity 43. The photocatalytic unit 10 includes a photocatalytic foam ceramic plate 1 with a photocatalyst surface and an ultraviolet light source that irradiates ultraviolet light onto the surface of the photocatalytic foam ceramic plate 1. The two sides of the photocatalytic foam ceramic plate 1 are permeable. The photocatalytic unit 10 is provided with an input control electrode 22 for electrical connection with the output control electrode 44 and the ultraviolet light source.

[0045] The ultraviolet light source is located on the windward side of the photocatalytic foam ceramic plate 1.

[0046] The ultraviolet light source includes a grid plate 21 and ultraviolet LED lamps 2. The ultraviolet LED lamps 2 are disposed on the side of the grid plate 21 facing the photocatalytic foam ceramic plate 1 and are offset from the grid holes 211 of the grid plate 21. Several ultraviolet LED lamps 2 are provided, and their number and irradiation area should be sufficient to irradiate the effective working area of ​​the photocatalytic foam ceramic plate 1. The ultraviolet LED lamps 2 are preferably point light sources. More preferably, the wavelength of the ultraviolet LED lamps 2 is 365nm. Using ultraviolet LED lamps 2 in the UVA band can improve photoelectric efficiency and reduce energy loss. The wavelength of the ultraviolet light emitted by the ultraviolet LED lamps 2 is 280–390nm, and can be a single wavelength or a mixture of wavelengths.

[0047] The photocatalytic foam ceramic plate 1 includes a foam ceramic plate and a titanium dioxide surface layer. The surface of the foam ceramic plate is provided with a number of breathable pores, and the titanium dioxide surface layer is formed by sintering titanium dioxide on the surface of the foam ceramic plate.

[0048] The photocatalytic foam ceramic plate 1 has an open-cell ratio of 70%–90% and a pore density of 8–60 ppi. Preferably, but not limitingly, the photocatalytic foam ceramic plate 1 uses an alumina-based foam support as an open-cell foam structure, and the photocatalyst is a TiO2 photocatalyst supported on an alumina-based foam support. In the photocatalyst, TiO2 grains are embedded and dispersed on the outer surface of the photocatalyst, and more than 70% of the TiO2 grains on the outer surface of the photocatalyst have a particle size of 5–50 μm.

[0049] The photocatalytic foam ceramic plate 1 and the ultraviolet light source of the aforementioned photocatalytic unit 10 are existing products. Their specific performance, process and materials can be found in two patent documents filed by our company: CN214051153U (announcement date August 27, 2021, title: Photocatalytic Unit and Air Purifier) ​​and CN 110871061B (July 26, 2022, title: A Photocatalytic Unit and Its Photocatalytic Method).

[0050] The output control electrode 44 is disposed in the cavity 43. The photocatalytic unit 10 is provided with a frame. The input control electrode 22 is disposed on the frame. An opening is provided on one side of the cavity 43. The photocatalytic unit 10 is inserted into the cavity 43 through the opening. The input control electrode 22 and the output control electrode 44 are in conductive contact.

[0051] The input control electrode 22 and the output control electrode 44 are connected to each other by plugging, pressing, or magnetic attraction.

[0052] A baffle is provided on the opening of the cavity 43. The baffle is fastened to the air guide shroud 4 or connected by screws to block the photocatalytic unit 10. The air inlet 41 is provided with an external circulation air inlet 411 and an internal circulation air inlet 412. A first valve 45 is provided in the air inlet 41 between the external circulation air inlet 411 and the internal circulation air inlet 412. The first valve 45 selectively blocks the external circulation air inlet 411 and the internal circulation air inlet 412.

[0053] A filter 3, which is a HEAP filter, is also provided inside the cavity 43 on the windward side corresponding to the photocatalytic unit 10. The HEAP filter can filter large particles such as dust, avoiding contamination of the photocatalytic unit and affecting its purification effect.

[0054] The frame includes a first frame 11 and a second frame 23 that are independently set. The photocatalytic foam ceramic plate 1 and the grid plate 21 are respectively set inside the first frame 11 and the second frame 23. The cavities 43 are respectively provided with a first cavity 431 and a second cavity 433 corresponding to the photocatalytic foam ceramic plate 1 and the grid plate 21. The photocatalytic foam ceramic plate 1 and the grid plate 21 are respectively set inside the first cavity 431 and the second cavity 433.

[0055] The cavity 43 is provided with a filter cavity 432, a second cavity 433, and a first cavity 431 along the windward direction. The filter screen 3 is disposed in the filter cavity 432, the ultraviolet light source is disposed in the second cavity 433, and the photocatalytic foam ceramic plate 1 is disposed in the filter cavity 432. The filter cavity 432, the second cavity 433, and the first cavity 431 are respectively provided with a filter screen insertion port, a second insertion port, and a first insertion port. The filter screen insertion port, the second insertion port, and the first insertion port are respectively provided with a filter screen baffle 47, a second baffle 462, and a first baffle 461.

[0056] The photocatalytic foam ceramic plate 1 is rectangular, circular, or other shapes adapted to the air duct (rectangular in this embodiment).

[0057] As a further solution, the surface of the first frame 11 is provided with a shockproof edge banding 111.

[0058] Among them, combined Figure 4 As shown, the vehicle air conditioning duct 5 is equipped with an evaporator 7, a heater 8, a glass air vent, and a car air vent. The heater 8, the glass air vent, and the car air vent are respectively equipped with a second valve 51, a third valve 52, and a fourth valve 53. The second valve 51 is used to block the heater 8 or guide air through it. The third valve 52 can open or block the glass air vent, and the fourth valve 53 can open or block the car air vent. A fan 6 is also provided between the exhaust end 42 of the air guide hood 4 and the vehicle air conditioning duct 5. The fan 6 is electrically connected to the vehicle air conditioning control system 9. In this embodiment, the first valve 45, the second valve 51, the third valve 52, and the fourth valve 53 are each controlled by a motor, and the motors of each valve are electrically connected to the vehicle air conditioning control system 9. The output control electrode 44 is connected in parallel with the fan 6, and the ultraviolet light source illuminates when the fan 6 starts.

[0059] Or, combine Figure 5 As shown, with Figure 4 The difference lies in the following: the fan 6 is located at the air inlet 41 of the air guide shroud 4, and the air outlet 42 of the air guide shroud 4 is directly connected to the vehicle's air conditioning duct 5. The output control electrode 44 can be independently electrically connected to the automotive air conditioning control system 9. The automotive air conditioning control system 9 can be designed with a control circuit for the illumination of the ultraviolet light source, can start independently of the fan 6, and can be equipped with a detection circuit (such as a current detection circuit) to determine whether the ultraviolet light source is damaged. If it is damaged, an alarm signal will be issued to remind the user to replace it.

[0060] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A vehicle-mounted air purification device comprising a photocatalytic unit (10), characterized in that: It also includes an air guide hood (4), which has an air inlet end (41), a partition (43) and an exhaust end (42) for communicating with the air conditioning duct (5) of the vehicle compartment. The air inlet end (41) and the exhaust end (42) are respectively connected to the partition (43). The air guide hood (4) is also provided with an output control electrode (44) for electrically connecting with the vehicle air conditioning control system (9). The photocatalytic unit (10) is set in the partition (43). The photocatalytic unit (10) includes a photocatalytic foam ceramic plate (1) with a photocatalyst on its surface and an ultraviolet light source that irradiates ultraviolet light onto the surface of the photocatalytic foam ceramic plate (1). The two sides of the photocatalytic foam ceramic plate (1) are breathable. The photocatalytic unit (10) is provided with an input control electrode (22), which is used to electrically connect with the output control electrode (44) and the ultraviolet light source.

2. The air purifying device of claim 1, wherein: The ultraviolet light source is located on the windward side of the photocatalytic foam ceramic plate (1).

3. The air purifying device of claim 1, wherein: The ultraviolet light source includes a grid plate (21) and an ultraviolet LED lamp (2). The ultraviolet LED lamp (2) is located on the side of the grid plate (21) facing the photocatalytic foam ceramic plate (1) and is offset from the grid holes (211) of the grid plate (21).

4. The air purifying device of claim 3, wherein: The output control electrode (44) is disposed in the cavity (43). The photocatalytic unit (10) is provided with a frame. The input control electrode (22) is disposed on the frame. An opening is provided on one side of the cavity (43). The photocatalytic unit (10) is inserted into the cavity (43) through the opening. The input control electrode (22) and the output control electrode (44) are in conductive contact.

5. The air purification device according to any one of claims 1 to 4, wherein: The input control electrode (22) and the output control electrode (44) are connected by insertion, pressing or magnetic attraction.

6. The air purifying device of claim 1, wherein: The opening of the cavity (43) is provided with a baffle, which is fastened to the air guide shroud (4) or connected by screws to block the photocatalytic unit (10); the air inlet (41) is provided with an external circulation air inlet (411) and an internal circulation air inlet (412), and a first valve (45) is provided between the external circulation air inlet (411) and the internal circulation air inlet (412) in the air inlet (41), and the first valve (45) selectively blocks the external circulation air inlet (411) and the internal circulation air inlet (412).

7. The air purifying device of claim 1, wherein: A filter (3) is also provided in the cavity (43) on the windward side corresponding to the photocatalytic unit (10).

8. The air purification device of claim 1, wherein: The photocatalytic foam ceramic plate (1) includes a foam ceramic plate and a titanium dioxide surface layer. The surface of the foam ceramic plate is provided with several breathable pores, and the titanium dioxide surface layer is formed by sintering titanium dioxide on the surface of the foam ceramic plate.

9. The air purification device of claim 4, wherein: The frame is a total frame (101), and the photocatalytic foam ceramic plate (1) and the grid plate (21) are jointly arranged inside the total frame (101); or, the frame includes a first frame (11) and a second frame that are separately arranged, and the photocatalytic foam ceramic plate (1) and the grid plate (21) are respectively arranged inside the first frame (11) and the second frame (23); the cavities (43) are respectively provided with a first cavity (431) and a second cavity (433) corresponding to the photocatalytic foam ceramic plate (1) and the grid plate (21), and the photocatalytic foam ceramic plate (1) and the grid plate (21) are respectively arranged inside the first cavity (431) and the second cavity (433).

10. The air purification device of claim 9, wherein: The surface of the total frame (101) or the first frame (11) is provided with shockproof edging (111).

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