Air purification fan

Abstract

The invention provides an air purification fan. The air purification fan comprises a shell assembly, a fan assembly and a filter screen assembly. Wherein the shell assembly comprises an upper shell and a lower shell, an air cavity is formed between the upper shell and the lower shell, an air inlet is formed in the side face of the upper shell, an air outlet is formed in the lower shell, and the air inlet, the air cavity and the air outlet are communicated with one another; the fan assembly is contained in the air cavity, an airflow channel is formed between the fan assembly and the lower shell, and the airflow channel communicates with the air cavity and the air outlet so that when the fan assembly rotates, external airflow can be driven to enter the air cavity from the air inlet and be exhausted from the air outlet after passing through the airflow channel. The filter screen assembly comprises a filter screen frame and a filter screen which are installed at the air inlet, the filter screen frame is clamped and fixed in the filter screen, and the filter screen frame and the filter screen are clamped and fixed together with the upper shell. Compared with the prior art, the air purification fan can purify air by arranging the filter screen at the air inlet, meanwhile, the fan assembly is fixed in the air cavity, the airflow channel is formed between the fan assembly and the lower shell, and airflow circulation can be driven.

Description

Technical Field

[0001] The present invention relates to an air purification fan, belonging to the technical field of household appliances. Background Art

[0002] Currently, the purification fans or circulation fans on the market are all floor-standing, which not only occupy living space but also have a small blowing range. Most of the ceiling fans with lights adsorb on the roof and only blow air by opening the fan blades. They not only have no effect of filtering and purifying air but also are prone to danger within the easily accessible range.

[0003] In view of this, it is necessary to improve the existing air purification fan to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide an air purification fan that can filter air through a filter screen installed at the air inlet. At the same time, by fixing a fan assembly in a housing assembly and forming an air flow channel between the housing assembly and the fan assembly, the air flow can be driven to circulate.

[0005] To achieve the above purpose, the present invention provides an air purification fan, including:

[0006] A housing assembly, including an upper shell and a lower shell. A wind cavity is formed between the upper shell and the lower shell. An air inlet is provided on the side surface of the upper shell, and an air outlet is provided on the lower shell. The air inlet, the wind cavity, and the air outlet are interconnected;

[0007] A fan assembly, received in the wind cavity and forming an air flow channel with the lower shell. The air flow channel connects the wind cavity and the air outlet so that when the fan assembly rotates, it can drive the external air flow to enter the wind cavity from the air inlet and be discharged from the air outlet through the air flow channel; and

[0008] A filter screen assembly, including a filter screen frame and a filter screen installed at the air inlet. The filter screen frame is snap-fitted and fixed inside the filter screen and is jointly snap-fitted and fixed with the upper shell.

[0009] As a further improvement of the present invention, clamping blocks are provided on the opposite inner side walls of the air inlet, and clamping grooves are provided on the opposite sides of the filter screen. When the filter screen is installed in the air inlet, the clamping blocks are received in the clamping grooves.

[0010] As a further improvement of the present invention, a notch is provided at the top of the filter screen, and a buckle portion is provided in the notch. The buckle portion is L-shaped and includes a holding portion that engages with the upper shell and a pressing portion that is exposed in the notch. When the pressing portion is pressed, the holding portion rotates accordingly to disengage from the clamping connection with the upper shell.

[0011] As a further improvement of the present invention, the bottom of the filter screen is provided with an extending column protruding downward, and the upper shell is correspondingly provided with a receiving opening, the receiving opening is communicated with the air inlet, and the extending column is inserted and received in the receiving opening.

[0012] As a further improvement of the present invention, a through hole and an assembly space communicating with each other are formed at the top of the upper shell. The air purification fan further includes a driving module and a ceiling box. The driving module is received in the assembly space and includes a metal component passing through the through hole. A receiving groove for receiving the metal component is formed in the ceiling box, and the metal component is received inside the ceiling box after passing through the receiving groove.

[0013] As a further improvement of the present invention, the air purification fan further includes a ceiling plate detachably connected to the upper shell. When the ceiling plate is fixedly connected to the upper shell, the ceiling box is squeezed to be fixed between the upper shell and the ceiling plate.

[0014] As a further improvement of the present invention, an elastic sheet is fixed in the ceiling box. When the ceiling plate is fixedly connected to the upper shell, the ceiling box is squeezed so that the elastic sheet abuts against the metal component to realize electrical connection between the elastic sheet and the metal component.

[0015] As a further improvement of the present invention, the elastic sheet includes a first elastic sheet and a second elastic sheet which are clamped with each other. The first elastic sheet includes a linkage part fixedly connected to the ceiling box and a switching part extending from the linkage part into the receiving groove. The switching part is electrically connected to the metal component.

[0016] As a further improvement of the present invention, the second elastic sheet is clamped with one end of the linkage part away from the switching part and cooperates with the linkage part to form a clamping part. A wiring groove communicating with the clamping part is formed on one side of the ceiling box so that a cable can enter the clamping part through the wiring groove. When the ceiling plate is fixedly connected to the upper shell, the second elastic sheet is squeezed to fix the cable in the clamping part.

[0017] As a further improvement of the present invention, there are two metal components, including a positive electrode metal component and a negative electrode metal component, and two corresponding elastic sheets are also provided to be electrically connected to the corresponding metal components respectively.

[0018] As a further improvement of the present invention, a first assembly cavity is recessed on one side of the upper shell facing the ceiling plate, and a second assembly cavity is arranged around the periphery of the first assembly cavity. The through hole is formed in the first assembly cavity, and the upper surface of the first assembly cavity is lower than the upper surface of the second assembly cavity.

[0019] As a further improvement of the present invention, the ceiling suction disc includes a connecting portion connected to the upper shell and a positioning portion received in the second assembly cavity. A clamping portion extends from the outer peripheral wall of the first assembly cavity, and a clamping member is correspondingly provided on the connecting portion. The clamping portion and the clamping member cooperate with each other to realize the clamping and fixing of the ceiling suction disc and the upper shell.

[0020] As a further improvement of the present invention, on one side of the ceiling suction box facing the ceiling suction disc, a guiding portion and a guiding wheel protrude in different directions. Corresponding guiding grooves for receiving the guiding portion and guiding walls provided on the outer periphery of the guiding grooves and adapted to the guiding wheels are provided on the ceiling suction disc. The guiding wheel and the clamping portion are in the same plane. The ceiling suction disc is configured to be rotatable to drive the guiding wall to rotate relative to the guiding wheel, so that the clamping member rotates synchronously until it is clamped and fixed with the clamping portion.

[0021] As a further improvement of the present invention, a lighting assembly is fixed to the bottom of the lower shell. The lighting assembly is arranged in a ring shape and includes a first lighting module and a second lighting module surrounding the first lighting module.

[0022] As a further improvement of the present invention, an installation cavity is recessed in the bottom of the lower shell, and an installation groove is recessed in the installation cavity. The first lighting module is fixed in the installation cavity and surrounds the periphery of the installation groove, and the second lighting module surrounds the outside of the installation cavity. The air purification fan further includes a display screen assembly fixed in the installation groove, and the display screen assembly is used to display the temperature and humidity of the air flow discharged from the air outlet.

[0023] The beneficial effects of the present invention are as follows: The air purification fan of the present invention purifies the air by providing a filter assembly at the air inlet. At the same time, a fan assembly is fixed in the air cavity of the housing assembly, and an air flow channel communicating with the air inlet and the air outlet is formed between the fan assembly and the lower shell, so as to drive the air flow to circulate. Description of the Drawings

[0024] Figure 1 It is a schematic structural view of an air purification fan according to a preferred embodiment of the present invention.

[0025] Figure 2 It is Figure 1 A schematic structural view of the air purification fan shown from another angle.

[0026] Figure 3 It is Figure 1 A schematic structural view of the air purification fan shown after removing the filter assembly.

[0027] Figure 4 It is Figure 1 A schematic structural view of the housing assembly in

[0028] Figure 5 is Figure 4 A structural schematic diagram of the shown housing assembly from another angle.

[0029] Figure 6 is Figure 1 An exploded view of the filter assembly in

[0030] Figure 7 is Figure 6 A partial enlarged view of

[0031] Figure 8 is Figure 1 An exploded view of the shown air purification fan.

[0032] Figure 9 is Figure 8 A structural schematic diagram of the ceiling box and the ceiling plate in

[0033] Figure 10 is Figure 8 An exploded view of the ceiling box in Detailed implementation manners

[0034] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] Please refer to Figures 1 to 3 As shown, the present invention discloses an air purification fan 100, which includes a housing assembly 1, a fan assembly 2, a lighting assembly 3 and a ceiling assembly 4. Among them, the fan assembly 2 is fixed inside the housing assembly 1, and the lighting assembly 3 is fixed at the bottom of the housing assembly 1 and completely shields the fan assembly 2 to avoid harming the user. The ceiling assembly 4 is fixed on the top of the housing assembly 1, and the air purification fan 100 is fixed on the installation surface through the ceiling assembly 4.

[0036] Please refer to Figure 4 and Figure 5 As shown, the housing assembly 1 includes an upper shell 17 and a lower shell 18. An air cavity is formed between the upper shell 17 and the lower shell 18. An air inlet 10 is provided on the side surface of the upper shell 17, and an air outlet 11 is provided on the lower shell 18, and the air inlet 10, the air cavity and the air outlet 11 are communicated with each other. In this embodiment, the air inlets 10 are opened on opposite sides of the top of the housing assembly 1. Of course, they can also be opened at the exact top of the housing assembly 1, as long as the air intake requirements are met, and there is no limitation on this.

[0037] Please refer to Figure 6 and Figure 7As shown, the air purification fan 100 further includes a filter component 5. The filter component 5 includes a filter frame 51 installed at the air inlet 10 and a filter 50. The filter frame 51 is snap-fitted and fixed inside the filter 50, and they are jointly snap-fitted and fixed to the upper shell 17. By providing the filter component 5, dust particles can be filtered out when air passes through the filter component 5, achieving the effect of purifying the air. During installation, first snap the filter frame 51 inside the filter 50. Through the snap-fitting on the opposite sides with the filter 50 and the extension part at the top passing through the holes reserved in the filter 50, it is fixed in different directions, realizing the snap-fitting and fixing with the filter 50. Then assemble the completed filter component 5 with the upper shell 17 and fix it at the air inlet 10.

[0038] Specifically, snap blocks 101 are provided on the opposite inner sidewalls of the air inlet 10, and snap grooves 501 are provided on the opposite sides of the filter 50. When the filter 50 is installed in the air inlet 10, the snap blocks 101 are received in the snap grooves 501. The bottom of the filter 50 is provided with a downward protruding extension post 502, and a receiving opening 102 corresponding to the upper shell 17 is provided. The receiving opening 102 is communicated with the air inlet 10, and the extension post 502 is inserted and received in the receiving opening 102. That is to say, the filter component 5 is fixed to the air inlet 10 through snap-fitting in different directions.

[0039] Preferably, a notch 503 is provided at the top of the filter 50, and a buckle part 504 is provided in the notch 503. The buckle part 504 is L-shaped and includes a holding part 5041 that engages with the upper shell 17 and a pressing part 5042 exposed in the notch 503. When the pressing part 5042 is pressed, the holding part 5041 rotates accordingly to disengage from the snap-fitting with the upper shell 17. In this way, the snap-fitting and disassembly of the filter component 5 and the upper shell 17 are made more convenient.

[0040] The fan component 2 is received inside the air cavity of the housing component 1, and an air flow channel is formed between the fan component 2 and the lower shell 18. The air flow channel communicates the air inlet 10 and the air outlet 11. So that when the fan component 2 rotates, it can drive the external air flow to enter the air cavity from the air inlet 10 and be discharged from the air outlet 11 after passing through the air flow channel. In this way, through the mutual communication of the air inlet 10, the air cavity, the air flow channel, and the air outlet 11, a complete air duct is formed inside the housing component 1. Then, through the rotation of the fan component 2, the air circulation is driven.

[0041] Please combine with Figures 8 to 10As shown, a perforation 13 and an assembly space (not shown) that communicate with each other are provided at the top of the upper shell 17. The air purification fan 100 further includes a drive module (not shown). The drive module is received in the assembly space and includes a metal element 6 that passes through the perforation 13. The metal element 6 is preferably two, and is respectively a positive metal element and a negative metal element for electrical connection with other components.

[0042] The ceiling-mounted assembly 4 includes a ceiling-mounted box 41 and a ceiling-mounted plate 42. A receiving groove 410 for receiving the metal element 6 is provided in the ceiling-mounted box 41. The metal element 6 passes through the receiving groove 410 and is received inside the ceiling-mounted box 41. The ceiling-mounted plate 42 is detachably connected to the upper shell 17, and presses and fixes the ceiling-mounted box 41 between the ceiling-mounted plate 42 and the upper shell 17. The receiving groove 410 is preferably two to respectively receive the positive metal element and the negative metal element.

[0043] An elastic piece 7 is fixed in the ceiling-mounted box 41. When the ceiling-mounted plate 42 is fixedly connected to the upper shell 17, the ceiling-mounted box 41 is pressed so that the elastic piece 7 abuts against the metal element 6 to achieve electrical connection between the elastic piece 7 and the metal element 6. In other words, when the ceiling-mounted box 41 is fixedly connected to the upper shell 17, the ceiling-mounted box 41 will be pressed in the direction of the metal element 6. At this time, the elastic piece 7 fixed inside the ceiling-mounted box 41 moves towards the metal element 6 together with the ceiling-mounted box 41 and finally abuts against the metal element 6. The elastic piece 7 also has two and is respectively electrically connected to the positive metal element and the negative metal element.

[0044] Specifically, the elastic piece 7 includes a first elastic piece 71 and a second elastic piece 72 that are mutually clamped. The first elastic piece 71 includes a linkage portion 711 fixedly connected to the ceiling-mounted box 41 and a conduction-breaking portion 712 extending from the linkage portion 711 into the receiving groove 410. The conduction-breaking portion 712 is electrically connected to the metal element 6.

[0045] The second elastic piece 72 is clamped to one end of the linkage portion 711 away from the conduction-breaking portion 712 and cooperates with the linkage portion 711 to form a clamping portion 720. A wiring groove 411 communicating with the clamping portion 720 is provided on one side of the ceiling-mounted box 41 so that a cable can enter the clamping portion 720 through the wiring groove 411. When the ceiling-mounted plate 42 is fixedly connected to the upper shell 17, the second elastic piece 72 is pressed to fix the cable in the clamping portion 720. Preferably, the wiring groove 411 is three to respectively correspond to different neutral wires, live wires, etc.

[0046] One side of the upper shell 17 facing the ceiling suction disc 42 is concavely provided with a first assembly cavity 14 and a second assembly cavity 15 annularly arranged on the outer periphery of the first assembly cavity 14. The through hole 13 is opened in the first assembly cavity 14, and the upper surface of the first assembly cavity 14 is lower than the upper surface of the second assembly cavity 15 to increase the contact area between the housing assembly 1 and the installation surface.

[0047] The ceiling suction disc 42 includes a connecting portion 421 connected to the upper shell 17 and a positioning portion 422 received in the second assembly cavity 15. A clamping portion 141 is suspended on the outer peripheral wall of the first assembly cavity 14, and a clamping member 4211 is correspondingly provided on the connecting portion 421. The clamping portion 141 and the clamping member 4211 cooperate with each other to realize the clamping and fixing of the ceiling suction disc 42 and the upper shell 17. Preferably, four clamping portions 141 are provided and are dispersed in different directions to ensure the firm fixing of the ceiling suction disc 42 and the upper shell 17.

[0048] One side of the ceiling suction box 41 facing the ceiling suction disc 42 protrudes with a guiding portion 412 and a guiding wheel 413 in different directions. The ceiling suction disc 42 is correspondingly provided with a guiding groove 423 for receiving the guiding portion 412 and a guiding wall 424 provided on the outer periphery of the guiding groove 423 and adapted to the guiding wheel 413. The guiding wheel 413 and the clamping portion 141 are located in the same plane. The ceiling suction disc 42 is configured to be rotatable to drive the guiding wall 424 to rotate relative to the guiding wheel 413, so that the clamping member 4211 rotates synchronously until it is clamped and fixed with the clamping portion 141.

[0049] Preferably, positioning grooves 4241 are provided at both ends of the guiding wall 424. During installation, first, the guiding wheel 413 and the guiding wall 424 are mutually attached and at least pass through one of the positioning grooves 4241. At this time, the ceiling suction disc 42 can be rotated, so that the guiding wall 424 rotates along the guiding wheel 413. Since the guiding wheel 413 and the clamping portion 141 are in the same plane, when the ceiling suction disc 42 is rotated, the clamping portion 141 can be clamped with the clamping member 4211 or the clamping can be released. Preferably, an opening 4210 is provided on the connecting portion 421, and the clamping member 4211 is a rib integrally formed with the upper shell 17 below the opening 4210. A gap is left between the clamping member 4211 and the opening 4210, and the clamping portion 141 is received in the gap. Preferably, a mating inclined surface is provided on the side of the clamping member 4211 away from the upper shell 17 to mate with the sliding of the clamping portion 141 so that the clamping portion 141 and the clamping member 4211 are clamped. A convex rib is protruded on the side of the clamping member 4211 close to the upper shell 17 to limit the clamping portion 141.

[0050] The lighting assembly 3 is arranged in a ring shape and includes a first lighting module 31 and a second lighting module 32 disposed around the periphery of the first lighting module 31. A mounting cavity 16 is recessed at the bottom of the lower housing 18, and a mounting groove 160 is recessed in the mounting cavity 16. The first lighting module 31 is fixed in the mounting cavity 16 and disposed around the periphery of the mounting groove 160, and the second lighting module 32 is disposed around the outside of the mounting cavity 16. The lighting range and brightness are improved by the lighting modules on both the inner and outer sides. Both the first lighting module 31 and the second lighting module 32 include a chassis, a light source board, and a face mask.

[0051] The air purification fan 100 further includes a display screen assembly 8 fixed in the mounting groove 160. The display screen assembly 8 includes sensors to sense and display the temperature and humidity of the air flow discharged from the air outlet 11, enhancing the user experience.

[0052] In summary, the air purification fan 100 of the present invention can purify air by providing a filter assembly 5 at the air inlet 10. At the same time, a fan assembly 2 is fixed in the air cavity of the housing assembly 1, and an air flow channel communicating with the air inlet 10 and the air outlet 11 is formed between the housing assembly 1 and the fan assembly 2, so as to drive the air flow to circulate.

[0053] The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. An air purification fan, characterized in that, Comprising: A housing assembly (1), including an upper housing (17) and a lower housing (18), a wind cavity is formed between the upper housing (17) and the lower housing (18), an air inlet (10) is provided on the side surface of the upper housing (17), the lower housing (18) is provided with an air outlet (11), and the air inlet (10), the wind cavity and the air outlet (11) are interconnected; A fan assembly (2), housed in the wind cavity, and an air flow channel is formed between the fan assembly (2) and the lower housing (18), the air flow channel communicates the wind cavity and the air outlet (11), so that when the fan assembly (2) rotates, it can drive external air to enter the wind cavity from the air inlet (10) and be discharged from the air outlet (11) after passing through the air flow channel; and A filter assembly (5), including a filter frame (51) and a filter (50) installed at the air inlet (10), the filter frame (51) is snap-fitted and fixed inside the filter (50), and they are jointly snap-fitted and fixed with the upper housing (17).

2. The air purification fan according to claim 1, characterized in that: Clamping blocks (101) are provided on the opposite two inner side walls of the air inlet (10), clamping grooves (501) are provided on the opposite two sides of the filter (50), and when the filter (50) is installed in the air inlet (10), the clamping blocks (101) are received in the clamping grooves (501).

3. The air purifying fan according to claim 1, wherein: A notch (503) is provided at the top of the filter (50), a clamping portion (504) is provided in the notch (503), the clamping portion (504) is L-shaped and includes a clamping portion (5041) that is latched with the upper housing (17) and a pressing portion (5042) that is exposed in the notch (503), and when the pressing portion (5042) is pressed, the clamping portion (5041) rotates accordingly to disengage from the clamping connection with the upper housing (17).

4. The air purification fan according to claim 1, wherein: An extension column (502) protruding downward is provided at the bottom of the filter (50), a receiving opening (102) corresponding to the extension column (502) is provided on the upper housing (17), the receiving opening (102) communicates with the air inlet (10), and the extension column (502) is inserted into and received in the receiving opening (102).

5. The air purifying fan according to claim 1, characterized in that: A through hole (13) and an assembly space communicating with each other are provided at the top of the upper housing (17), the air purification fan (100) further includes a driving module and a ceiling box (41), the driving module is housed in the assembly space and includes a metal element (6) passing through the through hole (13), a receiving groove (410) for receiving the metal element (6) is provided in the ceiling box (41), and the metal element (6) is received inside the ceiling box (41) after passing through the receiving groove (410).

6. The air purifying fan according to claim 5, wherein: The air purification fan (100) further includes a ceiling plate (42) detachably connected to the upper housing (17), and when the ceiling plate (42) is fixedly connected to the upper housing (17), the ceiling box (41) is squeezed to be fixed between the upper housing (17) and the ceiling plate (42).

7. The air purifying fan according to claim 6, characterized in that: An elastic sheet (7) is fixed inside the ceiling box (41). When the ceiling plate (42) is fixedly connected to the upper shell (17), the ceiling box (41) is squeezed so that the elastic sheet (7) abuts against the metal element (6) to achieve electrical connection between the elastic sheet (7) and the metal element (6).

8. The air purifying fan according to claim 7, wherein: The elastic sheet (7) includes a first elastic sheet (71) and a second elastic sheet (72) that are snap-connected to each other. The first elastic sheet (71) includes a linkage part (711) fixedly connected to the ceiling box (41) and a switching part (712) extending from the linkage part (711) into the receiving groove (410). The switching part (712) is electrically connected to the metal element (6).

9. The air purifying fan according to claim 8, wherein: The second elastic sheet (72) is snap-connected to one end of the linkage part (711) away from the switching part (712) and cooperates with the linkage part (711) to form a clamping part (720). A wiring groove (411) communicating with the clamping part (720) is formed on one side of the ceiling box (41) so that a cable can enter the clamping part (720) through the wiring groove (411). When the ceiling plate (42) is fixedly connected to the upper shell (17), the second elastic sheet (72) is squeezed to fix the cable in the clamping part (720).

10. The air purifying fan according to claim 7, characterized in that: There are two metal elements (6), including a positive metal element and a negative metal element. There are also two corresponding elastic sheets (7) to be electrically connected to the corresponding metal elements respectively.

11. The air purification fan according to claim 6, wherein: On one side of the upper shell (17) facing the ceiling plate (42), a first assembly cavity (14) is recessed, and a second assembly cavity (15) is provided around the outer periphery of the first assembly cavity (14). The through hole (13) is formed in the first assembly cavity (14), and the upper surface of the first assembly cavity (14) is lower than the upper surface of the second assembly cavity (15).

12. The air purifying fan according to claim 11, wherein: The ceiling plate (42) includes a connecting part (421) connected to the upper shell (17) and a positioning part (422) received in the second assembly cavity (15). A clamping part (141) extends from the outer peripheral wall of the first assembly cavity (14). A clamping part (4211) is correspondingly provided on the connecting part (421). The clamping part (141) and the clamping part (4211) cooperate with each other to realize snap connection and fixation between the ceiling plate (42) and the upper shell (17).

13. The air purification fan according to claim 12, characterized in that: One side of the ceiling box (41) facing the ceiling plate (42) protrudes with a guiding part (412) and a guiding wheel (413) in different directions. A guiding groove (423) for receiving the guiding part (412) and a guiding wall (424) arranged on the outer periphery of the guiding groove (423) and adapted to the guiding wheel (413) are correspondingly provided on the ceiling plate (42). The guiding wheel (413) and the clamping part (141) are located in the same plane. The ceiling plate (42) is configured to be rotatable to drive the guiding wall (424) to rotate relative to the guiding wheel (413), so that the clamping member (4211) rotates synchronously until it is clamped and fixed to the clamping part (141).

14. The air purifying fan according to claim 1, wherein: A lighting assembly (3) is fixed to the bottom of the lower housing (18). The lighting assembly (3) is arranged in a ring shape and includes a first lighting module (31) and a second lighting module (32) arranged around the periphery of the first lighting module (31).

15. The air purifying fan according to claim 14, wherein: An installation cavity (16) is recessed in the bottom of the lower housing (18). An installation groove (160) is recessed in the installation cavity (16). The first lighting module (31) is fixed in the installation cavity (16) and arranged around the periphery of the installation groove (160). The second lighting module (32) is arranged around the outside of the installation cavity (16). The air purification fan (100) further includes a display screen assembly (8) fixed in the installation groove (160). The display screen assembly (8) is used to display the temperature and humidity of the air flow discharged from the air outlet (11).

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