Air outlet device

Abstract

The application relates to the technical field of air outlet equipment and discloses air outlet equipment which comprises a shell, a first filtering assembly, a second filtering assembly, a first fan blade assembly and a second fan blade assembly; one end of the shell in the axial direction is provided with a first air inlet, and the other end is provided with an air outlet; the outer periphery of the shell is provided with a second air inlet; the first filtering assembly is connected to the shell and located at the first air inlet; the second filtering assembly is connected to the shell and located at the second air inlet; the first fan blade assembly is rotatably connected in the shell and located between the first filtering assembly and the second air inlet; the second fan blade assembly is rotatably connected in the shell and located between the second air inlet and the air outlet. The air outlet equipment has the advantages that the first air inlet is correspondingly provided with the first fan blade assembly, the second air inlet is correspondingly provided with the second fan blade assembly, the air inlet amount and the air inlet area of the whole air outlet equipment are effectively improved, and the output air quantity is also increased.

Description

Technical Field

[0001] This invention relates to the field of air outlet equipment technology, and specifically to air outlet equipment. Background Technology

[0002] As living standards improve, people are paying more and more attention to health and have higher and higher requirements for air quality. Fans and other air-discharging devices with added filters are popular with consumers because the filters remove dust, lint, and other impurities from the air before it is discharged, delivering clean and healthy air.

[0003] However, because the filter has low air permeability, it will affect the airflow of air outlet equipment such as fans, increasing the pressure of the input airflow and thus reducing the output airflow. Summary of the Invention

[0004] In view of this, the present invention provides an air outlet device to solve the problem of reduced output air volume caused by filters.

[0005] This invention provides an air outlet device, comprising: The housing has a first air inlet at one axial end and an air outlet at the other end; a second air inlet is provided on the outer periphery of the housing. The first filter assembly is connected to the housing and located at the first air inlet; The second filter assembly is connected to the housing and located at the second air inlet; The first fan blade assembly is rotatably connected inside the housing and is located between the first filter assembly and the second air inlet; The second fan blade assembly is rotatably connected within the housing and is located between the second air inlet and the air outlet.

[0006] Beneficial effects: When the first fan blade assembly rotates and drives airflow to draw in air, the air is first filtered by the first filter assembly at the first air inlet before entering the housing, and then discharged as clean, healthy air through the air outlet. When the second air pressure assembly rotates and drives airflow to draw in air, the air is first filtered by the second filter assembly at the second air inlet before entering the housing, and then discharged as clean, healthy air through the air outlet. Although the first filter assembly and the second filter assembly are respectively installed at the first and second air inlets, affecting the air permeability at the first and second air inlets, the overall air intake volume and air intake area of ​​the air outlet device are effectively increased due to the first fan blade assembly corresponding to the first air inlet and the second fan blade assembly corresponding to the second air inlet, and the output air volume is also increased accordingly.

[0007] In one alternative embodiment, a third fan blade assembly is further included, connected to the outer periphery of the first fan blade assembly and located between the first fan blade assembly and the inner peripheral wall of the housing, for reversing the air flow in the direction of the air outlet.

[0008] Beneficial Effects: Since the first air inlet is located at one end of the housing's axial direction and the second air inlet is located on the outer periphery of the housing, there is an angle between the air intake directions of the first and second air inlets. Some of the air entering the first fan blade assembly will flow backwards towards the first air inlet through the outer periphery of the first fan blade assembly. When the rotation speeds of the first and second fan blade assemblies are the same, the reverse flow is small; however, when the rotation speed of the first fan blade assembly is lower than that of the second fan blade assembly, the second fan blade assembly doubles the output airflow, creating negative pressure in the area between the first and second fan blade assemblies. More air will flow backwards from the outer periphery of the first fan blade assembly, resulting in a reduction in the overall airflow. The third fan blade assembly is connected to the outer periphery of the first fan blade assembly and can rotate synchronously with it. During rotation, it pushes the reverse-flowing air from the outer periphery of the first fan blade assembly towards the air outlet, ensuring that the airflow direction within the air field remains uniform towards the air outlet, allowing it to be drawn out by the second fan blade assembly and achieving high-speed airflow.

[0009] In one optional embodiment, the first wind turbine assembly includes a support ring and at least two first blades, the first blades being fixedly connected to the inner ring of the support ring and distributed circumferentially around the support ring; the third wind turbine assembly includes at least two third blades, the third blades being fixedly connected to the outer ring of the support ring and distributed circumferentially around the support ring.

[0010] Beneficial effects: The support ring can simultaneously fix the first and third blades, and simplifies the first and second fan blade assemblies, avoiding excessive space occupation within the housing and reducing the air intake area. The first blade, when rotating, agitates the air and guides it from the first air inlet to the air outlet. The third blade, when rotating, agitates the air and guides the opposing airflow towards the air outlet.

[0011] In one alternative implementation, the first blade and the third blade have the same airflow direction.

[0012] Beneficial effect: The first and third blades guide the air in the same direction, both towards the air outlet.

[0013] In one alternative implementation, the number of the first blades is less than the number of the third blades.

[0014] Beneficial effects: By setting a third blade, which is more than the first blade, in the limited space between the support ring and the housing, a better reverse thrust effect can be obtained, and the reverse thrust air volume can be increased.

[0015] In one optional embodiment, the air outlet device further includes a first mounting position and a first drive mechanism. The first mounting position is fixedly connected to the inner circumference of the housing, and the first drive mechanism is fixedly connected to the first mounting position. The first fan blade assembly further includes a second mounting position, which is disposed on the inner circumference of the support ring. The two ends of the first blade are respectively connected to the inner ring of the support ring and the outer ring of the second mounting position. The first power output shaft of the first drive mechanism is fixedly connected to the second mounting position.

[0016] Beneficial effects: The first mounting position can fix the first drive mechanism inside the housing. The first power output shaft of the first drive mechanism is fixedly connected to the second mounting position of the first fan blade assembly, which can suspend the first fan blade assembly and rotatably set it inside the housing. Since the third fan blade assembly is fixedly connected to the outer periphery of the first fan blade assembly, the first power output shaft can drive the first fan blade assembly and the third fan blade assembly to rotate synchronously.

[0017] In one alternative implementation, the first filtering component includes: The first filter bracket is connected to the inner wall of the housing at one end near the first air inlet; The first filter screen is installed on the first filter bracket.

[0018] Beneficial effects: The first filter support can support, limit and fix the first filter screen.

[0019] In one optional embodiment, the support ring has a limiting groove at one end facing the first filter assembly, and the first filter bracket has a limiting ring protruding at one end facing the support ring. The limiting ring extends into the limiting groove and rotates with the limiting groove.

[0020] Beneficial effects: The rotational engagement of the limiting ring and the limiting groove can limit the first fan blade assembly from the end away from the first drive mechanism, thereby further enhancing the stability of the first fan blade assembly. Furthermore, the setting of the limiting ring extending into the limiting groove further increases the difficulty of air flowing backwards towards the first air inlet, reducing the amount of air flowing backwards.

[0021] In one alternative embodiment, the air outlet device further includes a rear mesh cover, the first filter bracket is provided with a first buckle, one end of the rear mesh cover extends into the housing and is rotatably engaged with the first buckle.

[0022] Beneficial effects: The rear mesh cover ensures normal air intake at the first air inlet while protecting the internal structure of the housing. The first buckle simplifies the connection and removal of the rear mesh cover.

[0023] In one optional embodiment, the air outlet device further includes an air duct, a third mounting position, and a second drive mechanism. The air duct is connected to the housing, the third mounting position is disposed within the air duct, and the second drive mechanism is fixedly connected to the third mounting position. The second fan blade assembly is rotatably disposed within the air duct and located between the third mounting position and the air outlet. The second power output shaft of the second drive mechanism passes through the third mounting position and is fixedly connected to the second fan blade assembly.

[0024] Beneficial effects: The third mounting position can fix the second drive mechanism inside the housing. The fixed connection between the second power output shaft of the second drive mechanism and the second fan blade assembly allows the second fan blade assembly to be suspended and rotatably mounted in the air duct of the housing, facilitating the rotation of the second fan blade assembly. Furthermore, the air duct design facilitates the installation and disassembly of the second drive mechanism and the second fan blade assembly.

[0025] In one optional embodiment, the air outlet device further includes a front mesh cover, and a fourth mounting position is provided at one end of the air duct near the air outlet. A second buckle is provided at the fourth mounting position, and the front mesh cover extends into the fourth mounting position and is rotatably engaged with the second buckle.

[0026] Beneficial effects: The front mesh cover can ensure normal airflow from the air outlet and protect the structure inside the housing and air duct; the second buckle simplifies the connection and disassembly of the front mesh cover. Attached Figure Description

[0027] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 This is a cross-sectional view of an air outlet device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of a first fan blade assembly and a third fan blade assembly of an air outlet device according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the housing of an air outlet device according to an embodiment of the present invention; Figure 4This is a schematic diagram from a first perspective of the first filter bracket of an air outlet device according to an embodiment of the present invention; Figure 5 This is a schematic diagram from a second perspective of the first filter bracket of an air outlet device according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the first filter screen of an air outlet device according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the rear mesh cover of an air outlet device according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the second filter component of an air outlet device according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the air duct of an air outlet device according to an embodiment of the present invention; Figure 10 This is a schematic diagram of the second fan blade assembly of an air outlet device according to an embodiment of the present invention; Figure 11 This is an exploded view of the installation of an air outlet device according to an embodiment of the present invention.

[0029] Explanation of reference numerals in the attached figures: 1. Housing; 101. First air inlet; 102. Air outlet; 103. Second air inlet; 2. First filter assembly; 21. First filter bracket; 211. Limiting ring; 212. First knob; 22. First filter screen; 3. Second filter assembly; 4. First fan blade assembly; 41. Support ring; 411. Limiting groove; 42. First blade; 43. Second mounting position; 5. Second fan blade assembly; 6. Third blade; 7. First mounting position; 8. First drive mechanism; 81. First power output shaft; 9. Rear grille; 91. Third knob; 10. Air duct; 1001. Fourth mounting position; 1002. Second knob; 11. Third mounting position; 12. Second drive mechanism; 121. Second power output shaft; 13. Front grille; 14. First knob; 15. Second knob. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] The following is combined Figures 1 to 11 The following describes embodiments of the present invention.

[0032] According to an embodiment of the present invention, an air outlet device is provided, comprising a housing 1, a first filter assembly 2, a second filter assembly 3, a first fan blade assembly 4, and a second fan blade assembly 5; the housing 1 has a first air inlet 101 at one axial end and an air outlet 102 at the other end; the housing 1 has a second air inlet 103 on its outer periphery; the first filter assembly 2 is connected to the housing 1 and located at the first air inlet 101; the second filter assembly 3 is connected to the housing 1 and located at the second air inlet 103; the first fan blade assembly 4 is rotatably connected inside the housing 1 and located between the first filter assembly 2 and the second air inlet 103; the second fan blade assembly 5 is rotatably connected inside the housing 1 and located between the second air inlet 103 and the air outlet 102.

[0033] When the first fan blade assembly 4 rotates and drives the airflow to enter the housing 1, the air is first filtered by the first filter assembly 2 at the first air inlet 101 before entering the housing 1, and then discharged as clean, healthy air through the air outlet 102. When the second air pressure assembly rotates and drives the airflow to enter the housing 1, the air is first filtered by the second filter assembly 3 at the second air inlet 103 before entering the housing 1, and then discharged as clean, healthy air through the air outlet 102. Although the first filter assembly and the second filter assembly 3 are respectively set at the first air inlet 101 and the second air inlet 103, which affects the air permeability at the first air inlet 101 and the second air inlet 103, the first fan blade assembly 4 is provided at the first air inlet 101 and the second fan blade assembly 5 is provided at the second air inlet 103, which effectively increases the overall air intake volume and air intake area of ​​the air outlet equipment, and the output air volume also increases accordingly.

[0034] In related technologies, in order to increase the output air volume of an air outlet device with a filter, two sets of fan blades are usually installed inside the housing 1 of the air outlet device. However, since the two sets of fan blades are spaced apart along the air outlet direction between the air inlet and the air outlet 102, the two sets of fan blades affect each other. The air intake of the fan blades closer to the air outlet 102 is affected by the fan blades farther away from the air outlet 102, and the air output of the fan blades farther away from the air outlet 102 is affected by the fan blades closer to the air outlet 102. As a result, they cannot be used normally and cannot achieve the purpose of increasing the output air volume.

[0035] In this embodiment, a second air inlet 103 is provided between the first fan blade assembly 4 and the second fan blade assembly 5, so that the first fan blade assembly 4 is matched with the first air inlet 101 and the second fan blade assembly 5 is matched with the second air inlet 103. The air intake of the first fan blade assembly 4 has little impact on the air intake of the second fan blade assembly 5, and the second fan blade assembly 5 does not affect the air outlet direction of the first fan blade assembly 4, so that both the first fan blade assembly 4 and the second fan blade assembly 5 can obtain good air volume output.

[0036] In this embodiment, the air outlet device can be a purification fan, or an air purifier and humidifier, etc.

[0037] In one embodiment, a third fan blade assembly is also included, connected to the outer periphery of the first fan blade assembly 4 and located between the first fan blade assembly 4 and the inner peripheral wall of the housing 1, for reversing the air flow in the direction of the air outlet 102.

[0038] Since the first air inlet 101 is located at one end of the housing 1 in the axial direction and the second air inlet 103 is located on the outer periphery of the housing 1, there is an angle between the air intake direction of the first air inlet 101 and the air intake direction of the second air inlet 103. Some of the air intake from the first fan blade assembly 4 will flow backwards towards the first air inlet 101 through the outer periphery of the first fan blade assembly 4. When the rotational speeds of the first fan blade assembly 4 and the second fan blade assembly 5 are the same, the reverse airflow is small. However, when the rotational speed of the first fan blade assembly 4 is lower than the rotational speed of the second fan blade assembly 5, the second fan blade assembly 5 doubles the airflow output, creating negative pressure in the area between the first fan blade assembly 4 and the second fan blade assembly 5. More air will flow backwards from the outer periphery of the first fan blade assembly 4, resulting in a reduction in the overall airflow output. The third fan blade assembly is connected to the outer periphery of the first fan blade assembly 4. It can rotate synchronously with the first fan blade assembly 4. During the rotation, it pushes the air flowing against the flow on the outer periphery of the first fan blade assembly 4 in the direction of the air outlet 102, so that the air flow direction in the wind field is kept in a uniform direction towards the air outlet 102, so that it can be sucked out by the second fan blade assembly 5 to achieve high-speed air output.

[0039] As an alternative implementation, the air outlet device may also include a third fan blade assembly. The third fan blade assembly is rotatably disposed between the outer periphery of the first fan blade assembly 4 and the inner peripheral wall of the housing 1. The third fan blade assembly is independently driven by a third drive mechanism. When the rotational speeds of the first fan blade assembly 4 and the second fan blade assembly 5 are the same, the third fan blade assembly may not rotate. When the rotational speed of the first fan blade assembly 4 is less than the rotational speed of the second fan blade assembly 5, the third fan blade assembly may be turned on to push air in the opposite direction to the air outlet 102.

[0040] In one embodiment, the first wind blade assembly 4 includes a support ring 41 and at least two first blades 42, the first blades 42 being fixedly connected to the inner ring of the support ring 41 and distributed circumferentially around the support ring 41; the third wind blade assembly includes at least two third blades 6, the third blades 6 being fixedly connected to the outer ring of the support ring 41 and distributed circumferentially around the support ring 41.

[0041] The support ring 41 can simultaneously fix the first blade 42 and the third blade 6, enabling synchronous rotation of the first blade 42 and the third blade 6. It also simplifies the first fan blade assembly 4 and the second fan blade assembly 5, avoiding excessive space occupation within the housing 1 that would reduce the air intake area. When rotating, the first blade 42 agitates the air and guides it from the first air inlet 101 to the air outlet 102. Similarly, when rotating, the third blade 6 agitates the air and guides the opposing airflow towards the air outlet 102.

[0042] In a further embodiment, at least two first blades 42 are evenly distributed around the support ring 41 in the circumferential direction; at least two third blades 6 are evenly distributed around the support ring 41 in the circumferential direction.

[0043] In one embodiment, the first blade 42 and the third blade 6 have the same airflow direction.

[0044] The first blade 42 and the third blade 6 have the same air guiding direction, both guiding the air towards the air outlet 102.

[0045] In one embodiment, the number of first blades 42 is less than the number of third blades 6.

[0046] By setting a third blade 6, which is more than the first blade 42, in the limited space between the support ring 41 and the housing 1, a better reverse thrust effect can be obtained and the reverse thrust air volume can be increased.

[0047] In one embodiment, the air outlet device further includes a first mounting position 7 and a first drive mechanism 8. The first mounting position 7 is fixedly connected to the inner circumference of the housing 1, and the first drive mechanism 8 is fixedly connected to the first mounting position 7. The first fan blade assembly 4 further includes a second mounting position 43. The second mounting position 43 is disposed on the inner circumference of the support ring 41. The two ends of the first blade 42 are respectively connected to the inner ring of the support ring 41 and the outer ring of the second mounting position 43. The first power output shaft 81 of the first drive mechanism 8 is fixedly connected to the second mounting position 43.

[0048] The first mounting position 7 can fix the first drive mechanism 8 inside the housing 1. The first power output shaft 81 of the first drive mechanism 8 is fixedly connected to the second mounting position 43 of the first fan blade assembly 4, so that the first fan blade assembly 4 can be suspended and rotatably set inside the housing 1. Since the third fan blade assembly is fixedly connected to the outer periphery of the first fan blade assembly 4, the first power output shaft 81 can drive the first fan blade assembly 4 and the third fan blade assembly to rotate synchronously.

[0049] In a specific embodiment, the second mounting position 43 is provided with a first through hole, the first power output shaft 81 passes through the first through hole, and the end of the first power output shaft 81 away from the body of the first drive mechanism 8 is fixedly connected to the second mounting position 43 through the first knob 14.

[0050] Further, the second air inlet 103 is an annular opening located on the outer periphery of the housing 1, dividing the housing 1 into a first annular shell and a second annular shell. The housing 1 also includes a first reinforcing rib, the two ends of which are connected to the first annular shell and the second annular shell, respectively. There are multiple first reinforcing ribs, which are distributed circumferentially around the housing 1 at intervals. Preferably, the multiple first reinforcing ribs are evenly distributed circumferentially around the housing 1. The first mounting position 7 includes a first mounting groove and a second reinforcing rib. One end of the second reinforcing rib is connected to the first reinforcing rib, and the other end is connected to the outer peripheral wall of the first mounting groove. The bottom of the first mounting groove is located near the first fan blade assembly 4, and the bottom of the first mounting groove is provided with a second through hole and a first connecting hole. There are multiple first connecting holes, which are distributed circumferentially around the second through hole at intervals. The main body of the first drive mechanism 8 is located in the first mounting groove and is fixedly connected to the first connecting hole by multiple screws or bolts and other fasteners. The first power output shaft 81 of the first drive mechanism 8 passes through the second through hole and the first through hole in sequence and is fixedly connected to the first knob 14.

[0051] Furthermore, the second mounting position 43 includes a mounting ring and a mounting plate. The mounting ring is coaxially arranged with the support ring 41. The two ends of the first blade 42 are respectively connected to the inner ring of the support ring 41 and the outer ring of the mounting ring. The mounting plate is connected to the inner ring of the mounting ring and is a circular plate matching the shape of the mounting ring. The first through hole is provided on the mounting plate. Preferably, a first limiting plane is provided on the wall of the first through hole, and the first limiting plane extends along the axial direction of the first through hole. A second limiting plane is correspondingly provided on the outer periphery of the first power output shaft 81. The first limiting plane and the second limiting plane cooperate to prevent the first power output shaft 81 from rotating relative to the first through hole.

[0052] In one embodiment, the first filter assembly 2 includes a first filter bracket 21 and a first filter screen 22; the first filter bracket 21 is connected to one end of the inner wall of the housing 1 near the first air inlet 101; the first filter screen 22 is mounted on the first filter bracket 21.

[0053] The first filter support 21 can support, limit and fix the first filter screen 22.

[0054] In a specific embodiment, the first filter bracket 21 includes an inner ring, an outer ring, and a third reinforcing rib. The inner ring is coaxially disposed on the inner circumference of the outer ring. The two ends of the third reinforcing rib are connected to the inner ring and the outer ring, respectively. The first filter screen 22 is connected between the outer ring and the inner ring. Preferably, the first filter screen 22 is fitted onto the outer circumference of the inner ring and is interference-fitted thereto. A sealing plate is connected to one end of the inner ring near the first air inlet 101. The sealing plate and the inner ring form a groove-like structure. The sealing plate is coaxially disposed with the mounting plate of the second mounting position 43 and has the same area. The inner wall of the housing 1 has a protruding limiting flange and a first limiting strip. The limiting flange is spaced apart from the first air inlet 101. The first limiting strip extends along the axial direction of the housing 1. The outer peripheral wall of the bracket has a second limiting strip and a limiting groove. One end of the bracket outer ring abuts against the limiting flange. The second limiting strip slides against the inner peripheral wall of the housing 1, and the limiting groove slides against the first limiting strip. The bracket outer ring is also fixedly connected to the housing 1 by fasteners such as screws or bolts.

[0055] In a specific embodiment, the second filter assembly 3 includes a second filter bracket and a second filter screen. The second filter bracket includes a first filter ring and a second filter ring, which are spaced apart. The second filter screen is connected between the first filter ring and the second filter ring. The second filter assembly 3 can be sleeved on the outside of the first reinforcing rib between the first annular shell and the second annular shell, and both ends of the second filter assembly 3 abut against the first annular shell and the second annular shell of the housing 1, respectively. The second filter assembly 3 can be connected to the second air inlet 103 during the connection of the first annular shell and the second annular shell of the housing 1. Alternatively, the second filter assembly 3 can be integrally divided into two semi-circular structures, which are joined together at the second air inlet 103 and welded together.

[0056] In one embodiment, the support ring 41 has a limiting groove 411 at one end facing the first filter assembly 2, and the first filter bracket 21 has a limiting ring 211 protruding at one end facing the support ring 41. The limiting ring 211 extends into the limiting groove 411 and rotates with the limiting groove 411.

[0057] The rotational engagement of the limiting ring 211 and the limiting groove 411 can limit the first fan blade assembly 4 from the end away from the first drive mechanism 8, thereby further enhancing the stability of the first fan blade assembly 4. Furthermore, the setting of the limiting ring 211 extending into the limiting groove 411 further increases the difficulty of air flowing backwards towards the first air inlet 101, reducing the amount of air flowing backwards.

[0058] In this embodiment, if the third fan blade assembly is not provided, some of the counter-current air flows sequentially through the space between the outer periphery of the first fan blade assembly 4 and the inner wall of the housing 1, the space between the limiting ring 211 and the limiting groove 411, and the space between the first filter bracket 21 and the housing 1 before reaching the first air inlet 101 and flowing out from the first air inlet 101. In this embodiment, a third fan blade assembly is provided in the space between the outer periphery of the first fan blade assembly 4 and the inner wall of the housing 1, which can reverse the air flow when it initially flows in the opposite direction, so as to guide the counter-current air towards the direction of the air outlet 102.

[0059] In one embodiment, the air outlet device further includes a rear mesh cover 9, a first buckle 212 is provided on the first filter bracket 21, one end of the rear mesh cover 9 extends into the housing 1 and is rotated and snapped into the first buckle 212.

[0060] The rear mesh cover 9 ensures normal air intake through the first air inlet 101 and protects the internal structure of the housing 1. The first screw fastener 212 simplifies the connection and disassembly of the rear mesh cover 9.

[0061] In a specific embodiment, the outer ring of the first filter support 21 is an annular groove structure, and the limiting ring 211 is disposed at the bottom of the groove of the first filter support 21; the first buckle 212 is disposed on the groove wall of the inner ring of the outer ring of the support, and the rear mesh cover 9 is provided with a third buckle 91 that is rotatably engaged with the first buckle 212. There may be multiple first buckles 212, and the multiple first buckles 212 are distributed circumferentially around the first filter support 21 at intervals. Preferably, the multiple first buckles 212 are evenly distributed circumferentially around the first filter support 21; the number of third buckles 91 is the same as the number of first buckles 212.

[0062] In one embodiment, the air outlet device further includes an air duct 10, a third mounting position 11, and a second drive mechanism 12. The air duct 10 is connected inside the housing 1, the third mounting position 11 is disposed inside the air duct 10, and the second drive mechanism 12 is fixedly connected to the third mounting position 11. The second fan blade assembly 5 is rotatably disposed inside the air duct 10 and located between the third mounting position 11 and the air outlet 102. The second power output shaft 121 of the second drive mechanism 12 passes through the third mounting position 11 and is fixedly connected to the second fan blade assembly 5.

[0063] The third mounting position 11 can fix the second drive mechanism 12 inside the housing 1. The fixed connection between the second power output shaft 121 of the second drive mechanism 12 and the second fan blade assembly 5 allows the second fan blade assembly 5 to be suspended and rotatably mounted in the air duct 10 of the housing 1, facilitating the rotation of the second fan blade assembly 5. Furthermore, the air duct 10 facilitates the installation and disassembly of the second drive mechanism 12 and the second fan blade assembly 5.

[0064] In a specific embodiment, the third mounting position 11 includes a second mounting groove and a fourth reinforcing rib. The outer periphery of the second mounting groove is connected to the inner peripheral wall of the air duct 10 through the fourth reinforcing rib. The bottom of the second mounting groove is located near the air outlet 102. The second fan blade assembly 5 is located between the second mounting groove and the air outlet 102. A third through hole is provided on the bottom of the second mounting groove. A plurality of second connecting holes are arranged around the outer periphery of the third through hole. The body of the second drive mechanism 12 is located in the second mounting groove. The second power output shaft 121 passes through the second through hole and is fixedly connected to the second fan blade assembly 5. The body of the second drive mechanism 12 is fixedly connected to the second connecting holes by fasteners such as screws or bolts. The second fan blade assembly 5 includes a mounting base and a second blade. The mounting base is groove-shaped with the groove opening facing the third mounting position 11. A protrusion extending towards the second mounting position 43 is provided at the bottom of the groove. A third through hole is provided in the protrusion. The second power output shaft 121 passes through the second through hole and the third through hole in sequence and is fixedly connected to the second knob 15.

[0065] In one embodiment, the air outlet device further includes a front mesh cover 13. A fourth mounting position 1001 is provided at one end of the air duct 10 near the air outlet 102. A second buckle 1002 is provided on the fourth mounting position 1001. The front mesh cover 13 extends into the fourth mounting position 1001 and is rotated and engaged with the second buckle 1002.

[0066] The front mesh cover 13 can ensure the normal air outlet 102 and protect the structure inside the housing 1 and the air duct 10; the second buckle 1002 simplifies the connection and disassembly of the front mesh cover 13.

[0067] In a specific embodiment, the front mesh cover 13 is provided with a fourth buckle that is rotatably engaged with the second buckle 1002. There may be multiple second buckles 1002, which are distributed circumferentially around the air duct 10; preferably, the multiple second buckles 1002 are evenly distributed circumferentially around the air duct 10; the number of fourth buckles is the same as the number of third buckles 91.

[0068] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. An air outlet device, characterized in that, include: The housing (1) has a first air inlet (101) at one end in the axial direction and an air outlet (102) at the other end; the outer periphery of the housing (1) has a second air inlet (103). The first filter assembly (2) is connected to the housing (1) and located at the first air inlet (101); The second filter assembly (3) is connected to the housing (1) and located at the second air inlet (103); The first fan blade assembly (4) is rotatably connected inside the housing (1) and located between the first filter assembly (2) and the second air inlet (103); The second fan blade assembly (5) is rotatably connected inside the housing (1) and located between the second air inlet (103) and the air outlet (102); The air outlet device also includes a third fan blade assembly, which is connected to the outer periphery of the first fan blade assembly (4) and located between the first fan blade assembly (4) and the inner peripheral wall of the housing (1), for reversing the air flow in the direction of the air outlet (102).

2. The air outlet device according to claim 1, characterized in that, The first wind turbine assembly (4) includes a support ring (41) and at least two first blades (42), the first blades (42) being fixedly connected to the inner ring of the support ring (41) and distributed circumferentially around the support ring (41); the third wind turbine assembly includes at least two third blades (6), the third blades (6) being fixedly connected to the outer ring of the support ring (41) and distributed circumferentially around the support ring (41).

3. The air outlet device according to claim 2, characterized in that, The first blade (42) and the third blade (6) have the same air guiding direction.

4. The air outlet device according to claim 2, characterized in that, The number of the first blades (42) is less than the number of the third blades (6).

5. The air outlet device according to claim 2, characterized in that, The air outlet device further includes a first mounting position (7) and a first drive mechanism (8). The first mounting position (7) is fixedly connected to the inner circumference of the housing (1), and the first drive mechanism (8) is fixedly connected to the first mounting position (7). The first fan blade assembly (4) further includes a second mounting position (43). The second mounting position (43) is disposed on the inner circumference of the support ring (41). The two ends of the first blade (42) are respectively connected to the inner ring of the support ring (41) and the outer ring of the second mounting position (43). The first power output shaft (81) of the first drive mechanism (8) is fixedly connected to the second mounting position (43).

6. The air outlet device according to any one of claims 2 to 5, characterized in that, The first filtering component (2) includes: The first filter bracket (21) is connected to one end of the inner wall of the housing (1) near the first air inlet (101); The first filter screen (22) is installed on the first filter bracket (21).

7. The air outlet device according to claim 6, characterized in that, The support ring (41) has a limiting groove (411) at one end facing the first filter assembly (2), and the first filter bracket (21) has a limiting ring (211) protruding at one end facing the support ring (41). The limiting ring (211) extends into the limiting groove (411) and rotates with the limiting groove (411). And / or, the air outlet device further includes a rear mesh cover (9), a first buckle (212) is provided on the first filter bracket (21), one end of the rear mesh cover (9) extends into the housing (1) and is rotated and snapped into the first buckle (212).

8. The air outlet device according to any one of claims 1 to 5, characterized in that, The air outlet device further includes an air duct (10), a third mounting position (11), and a second drive mechanism (12). The air duct (10) is connected inside the housing (1). The third mounting position (11) is located inside the air duct (10). The second drive mechanism (12) is fixedly connected to the third mounting position (11). The second fan blade assembly (5) is rotatably disposed inside the air duct (10) and located between the third mounting position (11) and the air outlet (102). The second power output shaft (121) of the second drive mechanism (12) passes through the third mounting position (11) and is fixedly connected to the second fan blade assembly (5).

9. The air outlet device according to claim 8, characterized in that, The air outlet device also includes a front mesh cover (13). A fourth mounting position (1001) is provided at one end of the air duct (10) near the air outlet (102). A second buckle (1002) is provided on the fourth mounting position (1001). The front mesh cover (13) extends into the fourth mounting position (1001) and is rotated and snapped into place with the second buckle (1002).

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