Bidirectional wind wheel and double-air-duct fan

Abstract

The utility model discloses a two-way wind wheel and a double-air-duct fan, and relates to the field of wind wheel and fan structures, the two-way wind wheel comprises a first fan blade assembly which is arranged to absorb air in a first direction and then exhaust the air in a second direction during rotation; the second fan blade assembly is arranged to absorb air in the third direction during rotation and then exhaust the air in the fourth direction; one side of the partition plate is connected with the first fan blade assembly, the other side of the partition plate is connected with the second fan blade assembly, and the partition plate is arranged to isolate air absorbed by the first fan blade assembly from air absorbed by the second fan blade assembly; and the center assembly is arranged at the center position and used for driving the first fan blade assembly and / or the second fan blade assembly to rotate by the motor after being connected with a motor rotor. According to the two-way wind wheel, the first fan blade assembly and the second fan blade assembly are isolated through the partition plate, so that the effect of two-way independent circulation of air is achieved, and the purpose that the overall size of ventilation equipment is not increased in order to improve the CADR value is achieved.

Description

Technical Field

[0001] The utility model relates to the field of wind wheel and fan structure, in particular to a bidirectional wind wheel and a double-duct fan. Background Art

[0002] The design of fan assemblies plays a central role in the performance of fans and ventilators. As a critical component of the fan assembly, the impeller's design and manufacturing quality directly impact the efficiency of air flow and the reliability of the overall unit. The connection between the impeller and the motor rotor ensures efficient power transfer when the motor rotates, spinning the fan blades and accelerating airflow. Impeller design typically involves the shape, number, angle, and material selection of the blades, which together determine the fan's airflow characteristics, including air volume, air pressure, and noise level. Modern fan designs utilize aerodynamic principles to optimize the blades' aerodynamic performance for higher efficiency and lower energy consumption. The choice of motor is also crucial to the operation of the fan assembly. A high-quality motor not only provides stable power output but also ensures smooth and quiet fan operation.

[0003] The impeller is connected to the motor's rotor. The motor's rotation directly drives the impeller, which in turn rotates the fan blades, accelerating air circulation. This accelerated air flow not only effectively promotes cooling and relieves summer heat, but also allows for air circulation and circulation, playing an important role in improving air quality and creating a comfortable environment.

[0004] However, in order to achieve a higher CADR value to achieve air purification, it is usually necessary to increase the size of the impeller and filter. Although such design improvements can improve the efficiency of air purification, they also increase the overall size of the machine.

[0005] In view of this, this application is hereby filed. Utility Model Content

[0006] The purpose of the present utility model is to provide a bidirectional wind wheel and a dual-duct fan, wherein the bidirectional wind wheel isolates the first blade assembly and the second blade assembly by setting a partition, thereby achieving the effect of two-way independent air circulation, so as to solve the problem in the prior art that increasing the wind wheel size to improve the CADR value will increase the overall size of the ventilation equipment.

[0007] The present invention is implemented through the following technical solutions:

[0008] The present invention provides a bidirectional wind wheel, which is driven by a motor to change the wind direction, and includes:

[0009] a first fan blade assembly configured to absorb air in a first direction and discharge it in a second direction when rotating;

[0010] The second fan blade assembly is configured to absorb air in a third direction and discharge it in a fourth direction when rotating;

[0011] a partition plate connected to the first fan blade assembly on one side and to the second fan blade assembly on the other side, the partition plate being configured to isolate air absorbed by the first fan blade assembly from air absorbed by the second fan blade assembly;

[0012] The central component is arranged at the central position and is used to connect with the motor rotor so that the motor drives the first fan blade component and / or the second fan blade component to rotate.

[0013] Furthermore, the first fan blade assembly and the second fan blade assembly are arranged opposite to each other, and the first direction and the third direction are opposite directions.

[0014] Furthermore, the central component is arranged at the center of the first fan blade component, and is used to drive the first fan blade component and the second fan blade component to rotate synchronously after being connected to the motor rotor.

[0015] Furthermore, a protective frame is provided on the partition, and the first fan blade assembly and the second fan blade assembly are both provided in the protective frame, and the top, bottom and sides of the protective frame are all open structures.

[0016] In order to better solve the above problems, the embodiment of the present invention further provides a dual-duct fan, comprising the above-mentioned bidirectional wind wheel, a motor mounted on the central assembly, the motor being used to drive the bidirectional wind wheel to rotate; and further comprising:

[0017] A first air inlet mechanism is provided in a first direction and is used for the circulation of air in the first direction;

[0018] a first filter, connected to the first air inlet mechanism, for filtering the air entering the first air inlet mechanism;

[0019] The second air inlet mechanism is arranged in the third direction and is used for the circulation of air in the third direction;

[0020] a second filter screen connected to the second air inlet mechanism, for filtering the air entering the second air inlet mechanism;

[0021] an air outlet mechanism, one end of which is connected to the first air inlet mechanism, and the other end of which is connected to the second air inlet mechanism;

[0022] The bidirectional wind wheel is installed in the air outlet mechanism, and the bidirectional wind wheel is configured to receive air filtered by the first filter screen and the second filter screen, and discharge the received air from the air outlet mechanism.

[0023] Furthermore, the air outlet mechanism includes an upper portion and a lower portion, the upper portion is arranged above the partition, and the lower portion is arranged below the partition, and the partition seals and isolates the upper portion and the lower portion;

[0024] The upper portion is used to discharge the air sucked in the first direction, and the lower portion is used to discharge the air sucked in the third direction.

[0025] Furthermore, the first air inlet mechanism is a rectangular parallelepiped structure with an opening facing downward, the second air inlet mechanism is a rectangular parallelepiped structure with an opening facing upward, and the air outlet mechanism is a rectangular parallelepiped structure with openings at both ends, the open side of the first air inlet mechanism is connected to the top of the air outlet mechanism, and the open side of the second air inlet mechanism is connected to the bottom of the air outlet mechanism;

[0026] The first air inlet mechanism is provided with a first air inlet hole mechanism, the first filter is provided below the first air inlet hole mechanism, the second air inlet mechanism is provided with a second air inlet hole mechanism, the second filter is provided above the second air inlet hole mechanism.

[0027] Furthermore, the first air inlet hole mechanisms are evenly distributed on the four sides of the rectangular parallelepiped structure.

[0028] Furthermore, the second air inlet hole mechanisms are evenly distributed on the four side surfaces and the bottom surface of the rectangular parallelepiped structure.

[0029] Furthermore, air outlets are provided on the four side surfaces of the upper portion, and air outlets are provided on the four side surfaces of the lower portion.

[0030] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0031] 1. The bidirectional wind wheel provided by the embodiment of the present invention includes a first blade assembly and a second blade assembly separated by a partition. After the motor is connected to the central assembly, the bidirectional wind wheel can be driven to rotate. When the first blade assembly rotates, it is responsible for absorbing air from a first direction and discharging it from a second direction. When the second blade assembly rotates, it absorbs air from a third direction and discharges it from a fourth direction, so that the bidirectional wind wheel can simultaneously inhale air from two different directions, thereby increasing the air intake of the wind wheel without changing the lateral size of the wind wheel. The bidirectional wind wheel is installed in the fan assembly to ensure the compactness of the fan assembly structure, will not increase the overall size of the fan assembly, and can improve the CADR value of the fan assembly. The partition plays a key isolation role in the bidirectional wind wheel. One side of the partition is connected to the first blade assembly, and the other side is connected to the second blade assembly, ensuring that the air absorbed by the first blade assembly and the air absorbed by the second blade assembly will not mix, thereby maintaining the independence and orderliness of the airflow.

[0032] 2. The bidirectional wind wheel provided by the embodiment of the present invention can use only one motor assembly to drive the first blade assembly and the second blade assembly at the same time during operation. This structure does not increase the number of motors while ensuring the double air supply of the bidirectional air supply, and further achieves the purpose of ensuring that the overall size of the fan and ventilator is not increased.

[0033] 3. The dual-duct fan provided by the embodiment of the present invention is provided with a first filter and a second filter corresponding to the first blade assembly and the second blade assembly respectively. Due to the installation of the above-mentioned bidirectional wind wheel, two independent air ducts will be formed in the fan. The independent setting of the two filters allows the air in the two air ducts to be filtered and purified independently, and circulated and circulated independently. While increasing the air intake, the purification efficiency of each air duct is guaranteed. The CADR value can be improved without increasing the size of the wind wheel and the filter. The independent operation of the two air ducts will increase the independence and orderliness of the airflow, and has the effect of reducing noise.

[0034] 4. In this dual-duct fan, air flows in from five sides at the bottom and four sides at the top, passes through the upper and lower filters, and exits from the middle four sides. This not only increases airflow but also solves the problem of high wind resistance when a single filter is used for the same CADR value. The new duct has upper and lower filters, reducing wind resistance. The new impeller creates two air ducts, increasing CADR by over 20% while maintaining the same overall dimensions.

[0035] In general, the embodiments of the present invention provide a bidirectional wind wheel and a dual-duct fan, in which the bidirectional wind wheel isolates the first blade assembly and the second blade assembly by setting a partition, thereby achieving the effect of two-way independent air circulation, so as to achieve the purpose of improving the CADR value without increasing the overall size of the ventilation equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for the description of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0037] Figure 1 This is a schematic structural diagram of a bidirectional wind wheel provided in Example 1 of the present utility model;

[0038] Figure 2 A schematic diagram of the dual-duct fan structure provided in Example 2 of the present utility model;

[0039] Figure 3 A cross-sectional view of a dual-duct fan provided in Example 2 of the present utility model;

[0040] Figure 4 An exploded view of the dual-duct fan structure provided in Example 2 of the present utility model;

[0041] Figure 5 Six views of the dual-duct fan provided in Example 2 of the utility model, wherein Figure 5a is a top view, Figure 5 b is the main view, Figure 5 c is the rear view, Figure 5 d is the left view, Figure 5 e is the right view, Figure 5 f is a bottom view.

[0042] Markings and corresponding parts names in the accompanying drawings:

[0043] First fan blade assembly, 2-second fan blade assembly, 3-partition, 4-center assembly, 5-motor rotor, 6-protective frame, 7-first air inlet mechanism, 8-first filter, 9-second air inlet mechanism, 10-second filter, 11-air outlet mechanism, 12-upper part, 13-lower part, 14-first air inlet hole mechanism, 15-second air inlet hole mechanism, 16-air outlet, I-first direction, II-second direction, III-third direction, VI-fourth direction. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0045] Example 1:

[0046] like Figure 1 As shown, the embodiment of the present invention provides a bidirectional wind wheel for changing the wind direction after being driven by a motor, comprising:

[0047] The first fan blade assembly 1 is configured to absorb air in a first direction I and then discharge it in a second direction II when rotating. Figure 1 Above, the second direction Ⅱ is as follows Figure 1 Horizontal direction.

[0048] The second fan blade assembly 2 is configured to absorb air in the third direction III and then discharge it in the fourth direction VI when rotating. Figure 1 Below, the fourth direction VI is as follows Figure 1 In the horizontal direction, that is, the first fan blade assembly 1 and the second fan blade assembly 2 are arranged opposite to each other, and the first direction I and the third direction III are opposite directions.

[0049] Of course, in other embodiments, the relative setting direction of the first fan blade assembly 1 and the second fan blade assembly 2 is not limited here, as long as the purpose of two-way independent air circulation and circulation can be achieved. In the embodiment of the present utility model, the relative setting structure of the first fan blade assembly 1 and the second fan blade assembly 2 is more compact.

[0050] Partition 3 is connected to first fan assembly 1 on one side and to second fan assembly 2 on the other side. Partition 3 is configured to separate the air absorbed by first fan assembly 1 from the air absorbed by second fan assembly 2. The presence of partition 3 ensures that the air sucked in by the two fan assemblies does not mix, maintains the independence of the airflow, and improves the orderliness and efficiency of the air flow.

[0051] The central component 4 can be a component that connects the partition 3 and passes through the center of the first fan blade component 1. It is used to connect with the motor rotor 5 and then the motor drives the first fan blade component 1 and / or the second fan blade component 2 to rotate.

[0052] As a preferred embodiment of the present invention, the central assembly 4 is disposed at the center of the first blade assembly 1 and is used to connect to the motor rotor 5 to drive the first blade assembly 1 and the second blade assembly 2 to rotate synchronously. In this way, only a single motor is required to drive the first blade assembly 1 and the second blade assembly 2, simplifying the overall structure, reducing the number of required mechanical components, and saving space when installed in fans and ventilators.

[0053] Of course, in other embodiments, the first fan assembly 1 and the second fan assembly 2 can also be driven by two motors to achieve independent rotation, without limitation herein, as long as the purpose of independent bidirectional air circulation and flow can be achieved. The motor rotor 5 is connected to the center of the bidirectional wind wheel to improve the stability of the bidirectional wind wheel rotation. The connection here is preferably a detachable connection method, such as, for example, a threaded connection, a riveted connection, etc.

[0054] In order to better protect the first fan blade assembly 1 and the second fan blade assembly 2, a protective frame 6 can be set on the partition 3. The first fan blade assembly 1 and the second fan blade assembly 2 are both set in the protective frame 6. The top, bottom and side of the protective frame 6 are all open structures, and the open structure can ensure the circulation and circulation of air.

[0055] Specifically, the protective frame 6 provides physical protection for the first blade assembly 1 and the second blade assembly 2. The protective frame 6 can enhance the structural stability of the entire wind wheel, especially when rotating at high speeds, by reducing the vibration and swing of the blade assembly. In actual operation, the first blade assembly 1, the second blade assembly 2, the partition 3 and the protective frame 6 can be pre-set as a prefabricated integral structure to facilitate subsequent direct installation in the fan and ventilator. The protective frame 6 and the partition 3 can be fixedly connected or detachably connected, which is not limited here.

[0056] The embodiment of the utility model adopts the design of a bidirectional wind wheel, and isolates the air on both sides of the first blade assembly 1 and the second blade assembly 2 through the partition 3, so that the air on both sides can circulate and circulate independently, which can meet the high CADR value requirements for air purification in equipment such as fans and ventilators, while maintaining the compactness of the entire structure and the high efficiency of operation.

[0057] Example 2:

[0058] like Figure 2-Figure 4 As shown, the embodiment of the present invention provides a dual-duct fan, including the above-mentioned bidirectional wind wheel, and a motor is installed on the central component 4, which is used to drive the bidirectional wind wheel to rotate to achieve air flow control, that is, the bidirectional wind wheel in Example 1 is installed in the fan provided by the utility model; specifically, it also includes:

[0059] The first air inlet mechanism 7 is provided in the first direction I and is used for the circulation of air in the first direction I. Specifically, the bidirectional wind wheel absorbs the air in the first direction I and enters the first air inlet mechanism 7 and discharges the air in the second direction II.

[0060] The first filter 8 is connected to the first air inlet mechanism 7 and is used to filter the air entering the first air inlet mechanism 7. Specifically, after the bidirectional wind wheel absorbs the air in the first direction I and enters the first air inlet mechanism 7, the absorbed air is filtered by the first filter and then enters the first fan blade assembly 1 of the bidirectional wind wheel to ensure the quality of the discharged air;

[0061] The second air inlet mechanism 9 is provided in the third direction III and is used for the circulation of air in the third direction III. Specifically, the bidirectional wind wheel absorbs the air in the third direction III and enters through the second air inlet mechanism 9 and then discharges it from the fourth direction VI.

[0062] The second filter 10 is connected to the second air inlet mechanism 9 and is used to filter the air entering the second air inlet mechanism 9. After the bidirectional wind wheel absorbs the air in the third direction III and enters the first air inlet mechanism 7, the absorbed air is filtered by the second filter and then enters the second blade assembly 2 of the bidirectional wind wheel to ensure the quality of the discharged air;

[0063] The air outlet mechanism 11 has one end connected to the first air inlet mechanism 7 and the other end connected to the second air inlet mechanism 9. The air outlet mechanism 11 is arranged in the third direction III and the fourth direction VI of the bidirectional wind wheel, and is used to discharge the air absorbed by the first fan blade assembly 1 and the second fan blade assembly 2; the bidirectional wind wheel is installed in the air outlet mechanism 11, and the bidirectional wind wheel is arranged to receive air filtered by the first filter 8 and the second filter 10, and discharge the received air from the air outlet mechanism 11.

[0064] In an embodiment of the present utility model, two independent filtration and air inlet mechanisms are combined with a bidirectional wind wheel to form two independent air ducts in the fan. In one of the air ducts, air enters the first air inlet mechanism 7, is filtered by the first filter 8, and then enters the first fan blade assembly 1. The first fan blade assembly 1 is driven by the motor to discharge the air from the air outlet mechanism 11. In the other air duct, air enters the second air inlet mechanism 9, is filtered by the second filter 10, and then enters the second fan blade assembly 2. The second fan blade assembly 2 is driven by the motor to discharge the air from the air outlet mechanism 11. The two air ducts are independent of each other, do not affect each other, and filter independently, which increases the independence and orderliness of the airflow and effectively reduces noise.

[0065] More specifically, the air outlet mechanism 11 comprises an upper portion 12 and a lower portion 13. The upper portion 12 is positioned above the partition 3, while the lower portion 13 is positioned below the partition 3. The partition 3 seals and separates the upper and lower portions 12, 13. The upper portion 12 is used to discharge air drawn in from a first direction I, while the lower portion 13 is used to discharge air drawn in from a third direction III. This structure ensures that air drawn in from different directions is discharged through separate channels, further enhancing the independence of the two air ducts. The independent configuration of the upper and lower portions 12, 13 allows for separate control of air drawn in from the first and third directions I and III, providing more flexible airflow management. The upper portion 12 is responsible for discharging air drawn in from the first direction I, while the lower portion 13 is responsible for discharging air drawn in from the third direction III. This achieves directional exhaust and helps optimize the air flow path. Since air is discharged through separate channels, noise levels are reduced, providing a quieter operating environment.

[0066] For example, Figure 2As shown, the first air inlet mechanism 7 is a rectangular parallelepiped structure with an opening downward, the second air inlet mechanism 9 is a rectangular parallelepiped structure with an opening upward, and the air outlet mechanism 11 is a rectangular parallelepiped structure with openings at both ends. The open side of the first air inlet mechanism 7 is connected to the top of the air outlet mechanism 11, and the open side of the second air inlet mechanism 9 is connected to the bottom of the air outlet mechanism 11. The first air inlet mechanism 7 is provided with a first air inlet hole mechanism 14, and the first filter 8 is provided below the first air inlet hole mechanism 14. The second air inlet mechanism 9 is provided with a second air inlet hole mechanism 15, and the second filter 10 is provided above the second air inlet hole mechanism 15. Specifically, the first air inlet mechanism 7, the second air inlet mechanism 9, and the air outlet mechanism 11 can be spliced ​​into a complete rectangular parallelepiped structure, which also realizes vertical air flow. The first air inlet hole mechanism 14 and the second air inlet hole mechanism 15 can ensure smooth air circulation. The first filter 8 is disposed below the first air inlet hole mechanism 14, and the second filter 10 is disposed above the second air inlet hole mechanism 15, ensuring that the air entering the first blade assembly 1 and the second blade assembly 2 is fully filtered. This layered structure helps improve filtration efficiency and maintain a compact structure. Of course, in other embodiments, the first air inlet mechanism 7, the second air inlet mechanism 9, and the air outlet mechanism 11 are not limited to rectangular parallelepiped structures, but may also be cylindrical, triangular prism, or other structures, which are not limited here.

[0067] Back to the embodiment of the present invention, preferably, as Figure 5 As shown in Figures 5b, 5c, 5d, and 5e, the first air inlet hole mechanism 14 is evenly distributed on the four sides of the rectangular parallelepiped structure, that is, the air in the first direction I can enter from the four sides of the first air inlet mechanism 7, increasing the air inlet area, helping to improve the air inlet efficiency, and at the same time achieving a more uniform air flow distribution and avoiding dead corners of air flow. Similarly, the second air inlet hole mechanism 15 is evenly distributed on the four sides of the rectangular parallelepiped structure. More preferably, as shown in Figures 5b, 5c, 5d, and 5e, the first air inlet hole mechanism 14 is evenly distributed on the four sides of the rectangular parallelepiped structure. Figure 5 As shown in FIG. 5 , the second air inlet hole mechanism 15 is evenly distributed on the bottom surface of the second air inlet mechanism 9, which can further increase the air inlet area. In order to facilitate the placement of items on the top of the fan, such as Figure 5 As shown in FIG. a, the first air inlet hole mechanism 14 may not be provided at the top of the first air inlet mechanism 7. Of course, in other embodiments, the first air inlet hole mechanism 14 may also be provided at the top of the first air inlet mechanism 7 to increase the air inlet area, which is not a limitation here. To increase the air outlet area and direction of the air outlet mechanism 11, air outlets 16 may also be provided on all four sides of the upper portion 12 and all four sides of the lower portion 13. This allows for all-round air outlet. The even distribution of air outlets 16 on the sides helps achieve uniform air flow and avoids localized airflow that is too strong or too weak.

[0068] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0069] It should also be noted that, in this article, the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations, nor can they be understood as indicating or implying relative importance. Moreover, the term "include" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or terminal device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements that are inherent to such a process, method, article or terminal device.

[0070] The above is a detailed introduction to a bidirectional impeller and a dual-duct fan provided by the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only intended to help understand the present application, and the contents of this specification should not be construed as limiting the present application. At the same time, for those skilled in the art, according to the present application, there will be various changes in the specific implementation methods and application scopes. It is not necessary and impossible to enumerate all implementation methods here, and the obvious changes or modifications derived therefrom are still within the scope of protection of the present application.

Claims

1. A bidirectional wind wheel, used to change the wind direction after being driven by a motor, characterized in that: include: A first fan blade assembly (1) is configured to absorb air in a first direction (I) and discharge it in a second direction (II) when rotating; The second fan blade assembly (2) is configured to absorb air in a third direction (III) and discharge it in a fourth direction (VI) when rotating; a partition (3), one side of which is connected to the first fan blade assembly (1) and the other side of which is connected to the second fan blade assembly (2), the partition (3) being configured to isolate air absorbed by the first fan blade assembly (1) from air absorbed by the second fan blade assembly (2); The central component (4) is arranged at the central position and is used for connecting with the motor rotor (5) so that the motor drives the first fan blade component (1) and / or the second fan blade component (2) to rotate.

2. A bidirectional wind wheel according to claim 1, characterized in that: The first fan blade assembly (1) and the second fan blade assembly (2) are arranged opposite to each other, and the first direction (I) and the third direction (III) are opposite directions.

3. The bidirectional wind wheel according to claim 1, characterized in that: The central component (4) is arranged at the center of the first fan blade component (1) and is used to drive the first fan blade component (1) and the second fan blade component (2) to rotate synchronously after being connected to the motor rotor (5).

4. A bidirectional wind wheel according to claim 3, characterized in that: A protective frame (6) is provided on the partition (3); the first fan blade assembly (1) and the second fan blade assembly (2) are both provided in the protective frame (6); and the top, bottom and sides of the protective frame (6) are all open structures.

5. A dual-duct fan, characterized in that: The invention comprises the bidirectional wind wheel according to any one of claims 1 to 4, wherein a motor is installed on the central component (4), and the motor is used to drive the bidirectional wind wheel to rotate; and further comprises: A first air inlet mechanism (7) is arranged in the first direction (I) and is used for the circulation of air in the first direction (I); a first filter (8), connected to the first air inlet mechanism (7), and configured to filter air entering the first air inlet mechanism (7); The second air inlet mechanism (9) is arranged in the third direction (III) and is used for the circulation of air in the third direction (III); a second filter (10), connected to the second air inlet mechanism (9), for filtering the air entering the second air inlet mechanism (9); an air outlet mechanism (11), one end of which is connected to the first air inlet mechanism (7), and the other end of which is connected to the second air inlet mechanism (9); The bidirectional wind wheel is installed in the air outlet mechanism (11), and the bidirectional wind wheel is configured to receive air filtered by the first filter (8) and the second filter (10), and discharge the received air from the air outlet mechanism (11).

6. The dual-duct fan according to claim 5, characterized in that: The air outlet mechanism (11) comprises an upper portion (12) and a lower portion (13), wherein the upper portion (12) is arranged above the partition (3), and the lower portion (13) is arranged below the partition (3), and the partition (3) seals and isolates the upper portion (12) and the lower portion (13); The upper portion (12) is used to discharge the air sucked in in the first direction (I), and the lower portion (13) is used to discharge the air sucked in in the third direction (III).

7. The dual-duct fan according to claim 6, characterized in that: The first air inlet mechanism (7) is a rectangular parallelepiped structure with an opening facing downward, the second air inlet mechanism (9) is a rectangular parallelepiped structure with an opening facing upward, and the air outlet mechanism (11) is a rectangular parallelepiped structure with openings at both ends, the opening side of the first air inlet mechanism (7) is in communication with the top of the air outlet mechanism (11), and the opening side of the second air inlet mechanism (9) is in communication with the bottom of the air outlet mechanism (11); The first air inlet mechanism (7) is provided with a first air inlet hole mechanism (14), the first filter (8) is provided below the first air inlet hole mechanism (14), the second air inlet mechanism (9) is provided with a second air inlet hole mechanism (15), and the second filter (10) is provided above the second air inlet hole mechanism (15).

8. The dual-duct fan according to claim 7, characterized in that: The first air inlet hole mechanisms (14) are evenly distributed on the four sides of the rectangular parallelepiped structure.

9. The dual-duct fan according to claim 7, characterized in that: The second air inlet hole mechanisms (15) are evenly distributed on the four side surfaces and the bottom surface of the rectangular parallelepiped structure.

10. The dual-duct fan according to claim 6, characterized in that: Air outlets (16) are provided on the four side surfaces of the upper portion (12), and air outlets (16) are provided on the four side surfaces of the lower portion (13).

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