Windowsill type bidirectional fan with good filtering performance

Abstract

The invention discloses a windowsill type bidirectional fan with good filtering performance, and relates to the technical field of indoor ventilation. The device comprises a shell, a mounting groove is formed in the middle of the front side of the shell, ventilation grooves are symmetrically formed in the left side and the right side of the mounting groove in the front side of the shell, a driving assembly is arranged in the mounting groove, suction assemblies are arranged in the ventilation grooves, and a filtering assembly is arranged on the rear side of the suction assemblies in the shell. And air guide windows are installed on the front sides of the ventilation grooves, conveying pipes are fixedly installed at the bottom end of the rear side of the shell in a bilateral symmetry mode, and the conveying pipes communicate with the ventilation grooves in the left side and the right side correspondingly. Air inlet and air outlet can be carried out synchronously, the structure is simple and effective, the air exchange efficiency is improved, diffusion of fresh air in a room is facilitated, the improvement effect of improving the air quality is achieved, concentrated accumulation of dust on one side in the filtering process of the filtering plate is avoided, the filtering effect is improved, and the service life of the filtering plate is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of indoor ventilation, and particularly relates to a window - type two - way fan with good filtering performance. Background Art

[0002] With the continuous development of urban architecture, high - rise buildings are springing up, and a large number of enclosed glass curtain walls are used. Therefore, the ventilation effect of using natural wind in urban architecture is poor. In order to improve the indoor air quality and ensure the ventilation effect, a window - type two - way fan has emerged in the field of indoor household appliances, which can discharge the dirty air to the outside and send fresh air into the room, increasing air flow and improving indoor air quality.

[0003] However, the existing window - type two - way fan still has the following defects during use:

[0004] 1. The existing two - way fan realizes intermittent air intake and exhaust through circuit control, with a complex structure and room for improvement in air change efficiency. At the same time, it cannot perform sweeping air intake and exhaust, which is not conducive to the diffusion of fresh air in the room and reduces the improvement effect of air quality.

[0005] 2. When the existing two - way fan filters air, the filter plate is fixed. Not only is the filtering effect to be improved, but during the filtering process, due to the constant wind direction, the filter plate will show the phenomenon of unilateral concentrated dust accumulation, thereby reducing the filtering effect and service life of the filter plate. Summary of the Invention

[0006] The purpose of the present invention is to solve the problems of realizing intermittent air intake and exhaust through circuit control, with a complex structure and room for improvement in air change efficiency, being unable to perform sweeping air intake and exhaust, not being conducive to the diffusion of fresh air in the room, reducing the improvement effect of air quality, and the filter plate being prone to unilateral concentrated dust accumulation, reducing the filtering effect and service life of the filter plate. The present invention provides a window - type two - way fan with good filtering performance.

[0007] The present invention specifically adopts the following technical solutions to achieve the above purpose:

[0008] A window - type two - way fan with good filtering performance includes a housing. A mounting groove is provided in the middle of the front side of the housing. Ventilation grooves are symmetrically provided on the left and right sides of the mounting groove on the front side of the housing. A driving assembly is arranged inside the mounting groove. A suction assembly is arranged inside the ventilation grooves. A filtering assembly is arranged behind the suction assembly inside the housing. A wind guiding window is installed on the front side of the ventilation grooves. At the bottom end of the rear side of the housing, conveying pipes are symmetrically and fixedly installed on the left and right. The conveying pipes are respectively communicated with the ventilation grooves on the left and right sides;

[0009] Among them, the driving component is used to drive the suction component to perform horizontal input and discharge of air. At the same time, the driving component is also used to drive the filtering component to perform air filtering with the filter surface turned over.

[0010] Further, the driving component includes limiting sliding grooves. The left and right sides inside the installation groove are symmetrically and fixedly installed with limiting sliding grooves. An installation frame is connected between the limiting sliding grooves in a vertically limited sliding manner. The left and right sides inside the installation frame are connected in a horizontally limited sliding manner with a fixed frame. A motor is fixedly installed inside the fixed frame. The rear side of the motor is drivingly connected with a rotating shaft for driving the rotating shaft to rotate. A first pulley is fixedly installed on the periphery of the rotating shaft. The number of the first pulleys is two, and the two first pulleys are arranged in a front-back distribution on the periphery of the rotating shaft. A gear is fixedly installed at the rear end of the rotating shaft. A toothed ring groove is formed at the rear side of the installation groove inside the housing.

[0011] Further, the toothed ring groove is located outside the gear, and the gear meshes with the inner side of the toothed ring groove. Therefore, during the process of the rotating shaft driving the gear to rotate, it can rotate around the toothed ring groove.

[0012] Further, the suction component includes connecting columns. Connecting columns are symmetrically and fixedly installed in the vertical direction on the left and right sides inside the ventilation grooves. Inside the ventilation grooves, fans are connected in a horizontally limited sliding manner through the connecting columns. The central part inside the fans is rotatably connected with fan blades. The intake and exhaust of air are realized by the rotation of the fan blades. Second pulleys are fixedly installed at the rear ends of the fan blades. Connecting plates are fixedly installed on the adjacent sides of the left and right fans. An elastic telescopic rod is arranged between the connecting plates and the left and right ends of the fixed frame. One end of the elastic telescopic rod is fixedly installed with the fixed frame, and the other end is connected with the connecting plate in a vertically limited sliding manner, so that the elastic telescopic rod can slide up and down at the connecting plate and can also drive the connecting plate to move left and right.

[0013] Further, the spiral directions of the fan blades inside the left and right fans are opposite. Therefore, when the left and right fan blades rotate in the same direction, they can respectively perform air intake and exhaust.

[0014] Further, belts are drivingly connected between the first pulley and the second pulleys on the left and right sides, so that when the rotating shaft drives the first pulley to rotate, it can drive the second pulleys on the left and right sides to rotate synchronously in the same direction through the belts.

[0015] Further, the elastic telescopic rod penetrates through the partition between the installation groove and the ventilation groove, as well as the limiting sliding grooves and the installation frame. Grooves for the elastic telescopic rod to slide up and down are formed at the penetration positions of the partition between the installation groove and the ventilation groove and the limiting sliding grooves, so that the elastic telescopic rod can slide up and down following the installation frame.

[0016] Furthermore, the filter assembly includes a rectangular frame, and the rear sides of the fans inside the ventilation slots on the left and right sides are movably connected to two rectangular frames, the two rectangular frames are distributed front and back, and a filter plate is evenly connected up and down between the two rectangular frames distributed front and back, and the two sides of the filter plate are respectively hinged to the inside of the front and back rectangular frames, and a mounting plate is fixedly installed between the left and right rectangular frames on the front side, and the mounting plate is connected to the upper and lower limited sliding inside the shell, and the left and right rectangular frames on the left and right sides are fixedly installed with limiting columns in the middle away from one end, and the left side wall of the ventilation slot on the left and the right side wall of the ventilation slot on the right are both connected with a rotating rod for limited rotation.

[0017] Furthermore, the rotating shaft passes through the middle of the mounting plate, and a wire groove is opened in the middle of the mounting plate to allow the rotating shaft to slide left and right. Therefore, when the rotating shaft rotates along the gear ring groove, it can drive the mounting plate to move up and down.

[0018] Furthermore, waist holes are symmetrically provided on both sides of the rotating rod, and the limiting columns at the side ends of the filter plates distributed front and back extend into the waist holes on both sides of the rotating rod respectively, and are limitedly slidably connected in the waist holes, and the front filter plate is limitedly slidably connected up and down in the ventilation groove, and the rear filter plate is slidably connected in the ventilation groove, and the rear filter plate can slide back and forth and up and down in the ventilation groove. Therefore, when the mounting plate drives the front filter plate to move up and down, the cooperation between the limiting column and the rotating rod can drive the rear filter plate to move up and down in the opposite direction.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. The present invention, through the coordinated design of the driving component and the suction component, can achieve the synchronization of air intake and air outlet only through the control of the motor. The structure is simple and effective, and the efficiency of ventilation is improved. At the same time, it can achieve sweeping air intake and air outlet, which is conducive to the diffusion of fresh air in the room and improves the effect of improving air quality.

[0021] 2. The present invention, through the coordinated design of the driving component and the filtering component, can tilt and flip the filter plate by utilizing the offset reciprocating movement of the driving rectangular frame during the process of driving the fan to inlet and outlet air, so that different surfaces on the filter plate can interact with the air inlet direction, thereby avoiding the concentrated accumulation of dust on one side of the filter plate during the filtering process, which is beneficial to improving the filtering effect and the service life of the filter plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ;

[0023] Figure 2 The three-dimensional structure of the present invention is shown in FIG. Figure 2 ;

[0024] Figure 3 is a schematic diagram of the partial sectional three-dimensional structure of the present invention Figure 1 ;

[0025] Figure 4 is a schematic diagram of the partial sectional three-dimensional structure of the present invention Figure 2 ;

[0026] Figure 5 is a schematic diagram of the partial sectional three-dimensional structure of the present invention Figure 3 ;

[0027] Figure 6 is a schematic three-dimensional structure diagram of the driving component, suction component and filtering component of the present invention;

[0028] Figure 7 is a schematic three-dimensional structure of the driving component and the suction component of the present invention Figure 1 ;

[0029] Figure 8 is a schematic three-dimensional structure of the driving component and the suction component of the present invention Figure 2 ;

[0030] Figure 9 is a schematic diagram of the partial three-dimensional structure of the driving component and the suction component of the present invention;

[0031] Figure 10 is a schematic three-dimensional structure of the driving component and the filtering component of the present invention Figure 1 ;

[0032] Figure 11 is a schematic three-dimensional structure of the driving component and the filtering component of the present invention Figure 2 .

[0033] Reference numerals: 1, housing; 2, mounting groove; 3, ventilation groove; 4, driving component; 41, limiting sliding groove; 42, mounting frame; 43, fixing frame; 44, motor; 45, rotating shaft; 46, first pulley; 47, gear; 48, gear ring groove; 5, suction component; 51, connecting column; 52, fan; 53, fan blade; 54, second pulley; 55, connecting plate; 56, elastic telescopic rod; 6, filtering component; 61, rectangular frame; 62, filter plate; 63, mounting plate; 64, limiting column; 65, rotating rod; 7, air guide window; 8, conveying pipe; 9, belt. Detailed implementation manners

[0034] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0035] A window sill type two-way fan with good filtering performance according to a preferred embodiment of the present invention will be described in detail below. Figures 1 - 5 As shown, a windowsill-type two-way fan with good filtering performance comprises a shell 1, a mounting groove 2 is provided in the middle of the front side of the shell 1, ventilation grooves 3 are symmetrically provided on the left and right sides of the mounting groove 2 on the front side of the shell 1, a driving component 4 is arranged inside the mounting groove 2, a suction component 5 is arranged inside the ventilation groove 3, a filter component 6 is arranged on the rear side of the suction component 5 in the shell 1, an air guide window 7 is installed on the front side of the ventilation groove 3, and a delivery pipe 8 is symmetrically fixedly installed on the bottom end of the rear side of the shell 1, and the delivery pipe 8 is respectively connected with the ventilation grooves 3 on the left and right sides.

[0036] The driving assembly 4 is used to drive the suction assembly 5 to input and discharge air in a flat-sweeping manner. At the same time, the driving assembly 4 is also used to drive the filtering assembly 6 to perform flip-over air filtering.

[0037] Furthermore, if Figure 4 , Figures 6 - 9 As shown, the driving component 4 includes a limiting slide groove 41, and the limiting slide grooves 41 are symmetrically fixedly installed on the left and right sides inside the installation groove 2, and an installation frame 42 is connected to the upper and lower limiting slide grooves 41 by sliding, and the inner side of the installation frame 42 is connected to the left and right limiting sliding connections. A motor 44 is fixedly installed on the inner side of the fixed frame 43, and the rear side of the motor 44 is transmission-connected with a rotating shaft 45 for driving the rotating shaft 45 to rotate.

[0038] A first pulley 46 is fixedly installed on the periphery of the rotating shaft 45. There are two first pulleys 46, which are arranged front and back on the periphery of the rotating shaft 45. A gear 47 is fixedly installed on the rear end of the rotating shaft 45, and a gear ring groove 48 is opened on the rear side of the mounting groove 2 inside the shell 1.

[0039] The gear ring groove 48 is located on the outer side of the gear 47 , and the gear 47 is meshed with the inner side of the gear ring groove 48 . Therefore, when the rotating shaft 45 drives the gear 47 to rotate, it can rotate around the gear ring groove 48 .

[0040] The suction assembly 5 includes a connecting column 51, and the connecting columns 51 are fixedly installed symmetrically inside the ventilation slots 3 on the left and right sides. The inside of the ventilation slots 3 is connected to the fan 52 for sliding left and right limited movement through the connecting columns 51. The fan blades 53 are connected to the central limited rotation inside the fan 52. The air intake and air discharge are achieved by rotating the fan blades 53. The spiral directions of the fan blades 53 inside the fans 52 on the left and right sides are opposite. Therefore, when the fan blades 53 on the left and right sides rotate in the same direction, air intake and air discharge can be achieved respectively.

[0041] A second pulley 54 is fixedly installed at the rear end of each fan blade 53. Connecting plates 55 are fixedly installed on the adjacent sides of the left and right fans 52. An elastic telescopic rod 56 is arranged between the left and right ends of the connecting plate 55 and the fixed frame 43. One end of the elastic telescopic rod 56 is fixedly installed with the fixed frame 43, and the other end is in a limiting up-and-down sliding connection with the connecting plate 55, so that the elastic telescopic rod 56 can slide up and down at the connecting plate 55 and can also drive the connecting plate 55 to move left and right.

[0042] A belt 9 is drivingly connected between the first pulley 46 and the second pulleys 54 on the left and right sides, so that when the rotating shaft 45 drives the first pulley 46 to rotate, the second pulleys 54 on the left and right sides can be driven to rotate synchronously in the same direction through the belt 9.

[0043] The elastic telescopic rod 56 penetrates through the partition between the installation groove 2 and the ventilation groove 3, as well as the limiting chute 41 and the installation frame 42. Grooves for the up-and-down limiting sliding of the elastic telescopic rod 56 are provided at the penetration points of the partition between the installation groove 2 and the ventilation groove 3 and the limiting chute 41, so that the elastic telescopic rod 56 can slide up and down following the installation frame 42.

[0044] Further, as Figure 6 、 Figures 10 - 11 shown, the filtering assembly 6 includes a rectangular frame 61. Two rectangular frames 61 are movably connected to the rear sides of the fans 52 inside the left and right ventilation grooves 3. The two rectangular frames 61 are distributed front and back. Filter plates 62 are evenly drivingly connected up and down between the two rectangular frames 61 distributed front and back. Both sides of the filter plate 62 are hinged to the inside of the front and rear rectangular frames 61 respectively. An installation plate 63 is fixedly installed between the left and right rectangular frames 61 located on the front side. The rotating shaft 45 passes through the middle of the installation plate 63, and a wire groove for the left-and-right limiting sliding of the rotating shaft 45 is provided in the middle of the installation plate 63. Therefore, when the rotating shaft 45 rotates along the gear ring groove 48, the installation plate 63 can be driven to move up and down.

[0045] The installation plate 63 is in a limiting up-and-down sliding connection inside the housing 1. Limiting posts 64 are fixedly installed in the middle of the mutually separated ends of the left and right rectangular frames 61. Rotating rods 65 are in a limiting rotational connection with the left side wall of the left ventilation groove 3 and the right side wall of the right ventilation groove 3 respectively.

[0046] On both sides of the rotating rod 65, waist-shaped holes are symmetrically provided. The limiting posts 64 at the side ends of the front and rear distributed filter plates 62 respectively extend into the waist-shaped holes on both sides of the rotating rod 65 and are connected in a limited sliding manner within the waist-shaped holes. Moreover, the front filter plate 62 is connected in a limited up-and-down sliding manner within the ventilation groove 3, and the rear filter plate 62 is connected in a sliding manner within the ventilation groove 3. The rear filter plate 62 can slide back and forth and up and down within the ventilation groove 3. Therefore, when the mounting plate 63 drives the front filter plate 62 to move up and down, through the cooperation of the limiting post 64 and the rotating rod 65, the rear filter plate 62 can be driven to move up and down in a reverse dislocation manner.

[0047] The working principle of the present invention is:

[0048] During use, the motor 44 is started to drive the rotating shaft 45 to rotate, and the rotating shaft 45 drives the first pulley 46 to rotate. During the rotation of the first pulley 46, the left and right second pulleys 54 are driven to rotate synchronously in the same direction through the action of the belt 9, so as to drive the fan blades 53 inside the left and right fans 52 to rotate in the same direction. By using the design that the spiral directions of the fan blades 53 on the inner sides of the left and right fans 52 are opposite, the left and right fan blades 53 can respectively blow air out and draw air in. Furthermore, in cooperation with the functions of the left and right air guide windows 7 and the conveying pipes 8, air can be output and input simultaneously, improving the air exchange efficiency.

[0049] During the rotation of the rotating shaft 45, when driving the gear 47 to rotate, by using the meshing connection of the gear 47 inside the toothed ring groove 48, and the up-and-down limited sliding connection of the mounting frame 42 within the limited sliding groove 41 inside the mounting groove 2, and the left-and-right limited sliding connection of the fixed frame 43 within the mounting frame 42, the fixed frame 43 can drive the motor 44 to move circularly up, down, left, and right within the mounting groove 2. During the left-and-right movement of the fixed frame 43 and the motor 44, through the cooperation of the elastic telescopic rod 56 and the connecting plate 55, the left and right fans 52 can be driven to move left and right reciprocally, thereby realizing the sweeping type of air intake and air output, and improving the air diffusion effect.

[0050] It should be noted that: through the elastic telescopic design of the elastic telescopic rod 56, during the up-and-down reciprocating movement of the motor 44 driving the rotating shaft 45 and the first pulley 46, by using the elastic connection between the elastic telescopic rod 56 and the connecting plate 55, it is beneficial to keep the belt 9 between the first pulley 46 and the second pulley 54 in a tensioned state, which is beneficial to the stability of the transmission between the first pulley 46 and the second pulley 54 through the belt 9.

[0051] During the process of the motor 44 driving the rotating shaft 45 to move circularly up, down, left, and right, by means of the cooperation between the rotating shaft 45 and the mounting plate 63, the mounting plate 63 can be driven to reciprocate up and down, and then the rectangular frames 61 located on the left and right sides at the front side can be driven to reciprocate up and down. During the process of the front rectangular frame 61 reciprocating up and down, through the cooperation between the limiting posts 64 at the side ends of the filter plate 62 and the rotating rod 65 which is rotationally connected in a limiting manner at the side wall of the ventilation groove 3, the rectangular frame 61 at the rear side can be driven to move up and down in a reverse dislocation manner. During the process of the rectangular frames 61 at the front and rear sides moving in a dislocation manner, the filter plate 62 between the rectangular frames 61 can be tilted and turned over, so that different surfaces of the filter plate 62 act on the air inlet direction, avoiding the concentrated accumulation of dust on one side during the filtering process of the filter plate 62, which is beneficial to improving the filtering effect and the service life of the filter plate 62.

[0052] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A window-mounted two-way fan with good filtering performance, comprising a housing (1), characterized in that, A mounting groove (2) is provided in the middle of the front side of the housing (1). Ventilation grooves (3) are symmetrically provided on the left and right sides of the mounting groove (2) on the front side of the housing (1). A driving assembly (4) is arranged inside the mounting groove (2), and a suction assembly (5) is arranged inside the ventilation grooves (3). A filtering assembly (6) is arranged behind the suction assembly (5) inside the housing (1). A wind guiding window (7) is installed on the front side of the ventilation grooves (3). At the bottom end of the rear side of the housing (1), conveying pipes (8) are symmetrically and fixedly installed on the left and right. The conveying pipes (8) are respectively communicated with the ventilation grooves (3) on the left and right sides; Among them, the driving assembly (4) is used to drive the suction assembly (5) to perform a sweeping air input and discharge. At the same time, the driving assembly (4) is also used to drive the filtering assembly (6) to perform a flipping air filtration.

2. The window-mounted two-way fan with good filtration according to claim 1, wherein, The driving assembly (4) includes: Limit sliding grooves (41), and limit sliding grooves (41) are symmetrically and fixedly installed on the left and right sides inside the mounting groove (2); Mounting frame (42), and a mounting frame (42) is connected between the limit sliding grooves (41) in a vertically limited sliding manner; Fixed frame (43), and a fixed frame (43) is connected to the inside of the mounting frame (42) in a horizontally limited sliding manner; Motor (44), and a motor (44) is fixedly installed inside the fixed frame (43); Rotating shaft (45), and a rotating shaft (45) is connected to the rear side of the motor (44) in a transmission manner; First pulley (46), and first pulleys (46) are fixedly installed on the periphery of the rotating shaft (45). The number of the first pulleys (46) is two, and the two first pulleys (46) are arranged in a front-back distribution on the periphery of the rotating shaft (45); Gear (47), and a gear (47) is fixedly installed at the rear end of the rotating shaft (45); Toothed ring groove (48), and a toothed ring groove (48) is provided at the rear side of the mounting groove (2) inside the housing (1).

3. The window-mounted two-way fan with good filtering property according to claim 2, characterized in that, The toothed ring groove (48) is located outside the gear (47), and the gear (47) is engaged with the inner side of the toothed ring groove (48).

4. The window-mounted two-way fan with good filtration performance according to claim 2, characterized in that, The suction assembly (5) includes: Connecting columns (51), and connecting columns (51) are symmetrically and fixedly installed up and down inside the ventilation grooves (3) on the left and right sides; Fans (52), and fans (52) are connected to the inside of the ventilation grooves (3) in a horizontally limited sliding manner through the connecting columns (51); Fan blades (53), and fan blades (53) are connected to the center inside the fans (52) in a limited rotating manner; Second pulleys (54), and second pulleys (54) are fixedly installed at the rear ends of the fan blades (53); Connecting plates (55), and connecting plates (55) are fixedly installed on the adjacent sides of the fans (52) on the left and right sides; Elastic telescopic rods (56), and elastic telescopic rods (56) are arranged between the connecting plates (55) and the left and right ends of the fixed frame (43). One end of the elastic telescopic rod (56) is fixedly installed on the fixed frame (43), and the other end is connected to the connecting plate (55) in a limited up and down sliding manner.

5. The window-mounted two-way fan with good filtering performance according to claim 4, wherein, The spiral orientations of the fan blades (53) inside the fans (52) on the left and right sides are opposite.

6. The window-mounted two-way fan with good filtering performance according to claim 4, wherein, A belt (9) is drivingly connected between the first pulley (46) and the second pulleys (54) on both the left and right sides.

7. The window-type two-way fan with good filtration according to claim 4, characterized in that, The elastic telescopic rod (56) penetrates through the partition between the installation groove (2) and the ventilation groove (3), as well as the limit sliding groove (41) and the installation frame (42), and grooves for the up-and-down limit sliding of the elastic telescopic rod (56) are provided at the penetration of the partition between the installation groove (2) and the ventilation groove (3) and the limit sliding groove (41).

8. The window-mounted two-way fan with good filtering property according to claim 4, characterized in that, The filtering assembly (6) includes: A rectangular frame (61), two rectangular frames (61) are movably connected to the rear sides of the fans (52) inside the ventilation grooves (3) on both the left and right sides, and the two rectangular frames (61) are distributed front and rear; A filter plate (62), the filter plate (62) is drivingly connected up and down evenly between the two rectangular frames (61) distributed front and rear, and both sides of the filter plate (62) are hinged to the inside of the front and rear rectangular frames (61) respectively; A mounting plate (63), a mounting plate (63) is fixedly installed between the left and right rectangular frames (61) on the front side, and the mounting plate (63) is connected in a limit sliding manner up and down inside the housing (1); Limit columns (64), limit columns (64) are fixedly installed in the middle of the mutually remote ends of the left and right rectangular frames (61); Rotating rods (65), rotating rods (65) are connected in a limit rotation manner to the left side wall of the left ventilation groove (3) and the right side wall of the right ventilation groove (3).

9. The window-mounted two-way blower with good filtering property according to claim 8, characterized in that, The rotating shaft (45) passes through the middle of the mounting plate (63), and a wire groove for the left-and-right limit sliding of the rotating shaft (45) is provided in the middle of the mounting plate (63).

10. The window-mounted two-way fan with good filtering property according to claim 8, characterized in that, Waist holes are symmetrically provided on both sides of the rotating rod (65), the limit columns (64) at the side ends of the filter plates (62) distributed front and rear respectively extend into the waist holes on both sides of the rotating rod (65) and are connected in a limit sliding manner in the waist holes, and the front filter plate (62) is connected in a limit sliding manner up and down in the ventilation groove (3), the rear filter plate (62) is connected in a sliding manner in the ventilation groove (3), and the rear filter plate (62) can slide back and forth and up and down in the ventilation groove (3).

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