Fan and air conditioner comprising same

Abstract

The utility model relates to the technical field of air conditioning equipment, in particular to a fan and an air conditioner comprising the fan, and aims to solve the problems that wind power of an existing fan is concentrated, so that outlet air is not soft enough, and a user feels uncomfortable after the fan is used for a long time. In order to achieve the purpose, the fan comprises a fixing base, a driving device and blades, the driving device is installed on the fixing base, the driving device is in driving connection with the blades and can drive the blades to reciprocate in the direction perpendicular to the air outlet direction, the front edges of the blades are located on the air inlet side of the fan, and the rear edges of the blades are located on the air outlet side of the fan. And the blade is pivotally connected with the driving device and can rotate within a certain angle range, so that the front edge is always in inclined front of the rear edge in the moving direction of the blade. Through the arrangement, wind blown by the fan is soft and uniform and is closer to natural wind, and comfort and silence are improved.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning equipment technology, specifically providing a fan and an air conditioner including the fan. Background Technology

[0002] Currently, axial fans are characterized by large air volume and low air pressure, and are widely used in air conditioners or electric fans. They can output relatively strong air, achieve efficient heat transfer, and meet the needs of rapid cooling or heating.

[0003] However, during the high-speed rotation of the fan, the airflow is concentrated, resulting in a less gentle airflow. Prolonged use can easily cause discomfort to users, and the wind pressure around the blades is relatively high, which can produce obvious noise or even vibration.

[0004] Therefore, a new technical solution is needed in this field to solve the above problems. Utility Model Content

[0005] The present invention aims to solve the above-mentioned technical problem, namely, that the airflow of existing fans is relatively concentrated, resulting in insufficient airflow and easy discomfort to users after prolonged use.

[0006] In a first aspect, the present invention provides a fan, the fan comprising: a fixed base, a drive device, and blades, the drive device being mounted on the fixed base and drivenly connected to the blades, capable of driving the blades to reciprocate perpendicular to the air outlet direction, the leading edge of the blades being located on the air inlet side of the fan, the trailing edge of the blades being located on the air outlet side of the fan, the blades being pivotally connected to the drive device, and capable of rotating within a certain angle range, so that the leading edge is always obliquely in front of the trailing edge in the direction of movement of the blades.

[0007] In the preferred embodiment of the above-mentioned fan, the driving device includes a first stepper motor and a connecting arm. The first stepper motor is mounted on the fixed base, and the connecting arm is arranged perpendicular to the output shaft of the first stepper motor. The first end of the connecting arm is fixedly connected to the output shaft of the first stepper motor, and the second end of the connecting arm is pivotally connected to the blades to drive the blades to reciprocate in a direction perpendicular to the air outlet.

[0008] In the preferred embodiment of the above-mentioned fan, the fan further includes a second stepper motor and a controller. The second stepper motor is mounted on the connecting arm, and the output shaft of the second stepper motor is fixedly connected to the blade. The controller is communicatively connected to the blade and the second stepper motor, and can control the position of the leading edge and the trailing edge according to the movement direction of the blade.

[0009] In the preferred embodiment of the above-mentioned fan, there are multiple driving devices and multiple blades, with multiple driving devices spaced apart on the fixed base, and multiple blades arranged perpendicular to the air outlet direction.

[0010] In the preferred embodiment of the above-mentioned fan, the leading edge is configured with a serrated structure, and / or the trailing edge is configured with a serrated structure.

[0011] In the preferred embodiment of the above-mentioned fan, the blades are further provided with a reinforcing rib structure.

[0012] In the preferred embodiment of the above-mentioned fan, the surface of the blades is configured as a continuously undulating wave structure.

[0013] In the preferred embodiment of the above-mentioned fan, the angle between the blades and the plane of rotation is set to 30° to 45°.

[0014] In the preferred embodiment of the above-mentioned fan, the angle range of the reciprocating rotational motion of the blades perpendicular to the air outlet direction is 120° to 180°.

[0015] In a second aspect, the present invention provides an air conditioner, which includes the aforementioned fan.

[0016] With the above technical solution adopted, the fan of this utility model includes: a fixed base, a drive device, and blades. The drive device is mounted on the fixed base and is driven by the blades, enabling the blades to reciprocate perpendicular to the airflow direction. The leading edge of the blades is located on the air inlet side of the fan, and the trailing edge of the blades is located on the air outlet side of the fan. The blades are pivotally connected to the drive device and can rotate within a certain angle range so that the leading edge is always obliquely in front of the trailing edge in the direction of blade movement. With this configuration, on the one hand, the reciprocating motion of the blades can generate intermittent airflow, making the airflow gentler and more uniform, without being too concentrated, thus blowing a gentle breeze to the user and improving the user's comfort; on the other hand, it reduces the wind pressure around the blades, thereby reducing the noise and vibration of the fan.

[0017] Furthermore, the driving device of this utility model includes a first stepper motor and a connecting arm. The first stepper motor is mounted on a fixed base, and the connecting arm is arranged perpendicular to the output shaft of the first stepper motor. The first end of the connecting arm is fixedly connected to the output shaft of the first stepper motor, and the second end of the connecting arm is pivotally connected to the blades to drive the blades to reciprocate in a direction perpendicular to the air outlet. With this arrangement, the reciprocating rotation of the blades is achieved using the first stepper motor, and the angle range of the reciprocating rotation of the blades can be adjusted by adjusting the step angle of the first stepper motor, thereby adjusting the air outlet area.

[0018] Furthermore, the fan of this invention also includes a second stepper motor and a controller. The second stepper motor is mounted on the connecting arm, and its output shaft is fixedly connected to the blades. The controller is communicatively connected to the blades and the second stepper motor, enabling it to control the positions of the leading and trailing edges according to the direction of blade movement. By setting up the controller and the second stepper motor, the linkage adjustment between the positions of the leading and trailing edges and the rotation direction of the blades is achieved, making the linkage control mechanism simple in structure and easy to implement.

[0019] Furthermore, this invention features multiple drive devices and blades, with the drive devices spaced apart on the fixed base and the blades arranged perpendicular to the air outlet direction. This arrangement helps ensure the volume and continuity of the airflow.

[0020] Furthermore, the leading edge and / or trailing edge of this invention are configured with a serrated structure. This configuration achieves a biomimetic design for the blade. The serrated structure at the leading edge optimizes aerodynamic performance and increases the air intake at the blade's tip during movement. The serrated structure at the trailing edge generates vortices when air flows at high speed, ensuring a more uniform airflow distribution and optimizing the pressure differential distribution at the blade's tail. This helps reduce the impact and vibration between the blade and the gas, thereby reducing noise and vibration, achieving noise reduction.

[0021] Furthermore, the blades of this invention are also equipped with reinforcing ribs. This design helps to improve the overall strength of the blades, increase sweeping efficiency, and at the same time prevent blade deformation and vibration during the sweeping process, thereby reducing noise.

[0022] Furthermore, the surface of the blades in this invention is designed with a continuously undulating wave structure. This design increases the overall strength of the blades and reduces the eddies generated during sweeping, thereby reducing fan noise.

[0023] Furthermore, the angle between the blades and the plane of rotation in this invention is set to 30° to 45°. This setting allows the fan to achieve a better balance between air intake efficiency and noise level within this angle range, providing both a large air volume and wind speed while also helping to control noise.

[0024] Furthermore, the blades of this invention reciprocate in a rotational motion perpendicular to the airflow direction within an angle range of 120° to 180°. This design allows the fan to generate a suitable airflow area.

[0025] Furthermore, the air conditioner provided by this utility model, based on the aforementioned fan, possesses the technical effects of the aforementioned fan. Compared to the air conditioner before the improvement, the air conditioner of this utility model has a gentler and more uniform airflow, which is closer to the feeling of natural wind. At the same time, it reduces noise and vibration, and improves the comfort and quietness of the air conditioner. Attached Figure Description

[0026] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which:

[0027] Figure 1 This is a schematic diagram of the fan structure of this utility model;

[0028] Figure 2 This is an assembly diagram of the fixed base and the driving device of this utility model;

[0029] Figure 3 This is a schematic diagram of the blade structure of this utility model.

[0030] List of reference numerals in the attached diagram:

[0031] 1. Mounting base; 21. First stepper motor; 22. Connecting arm; 3. Blade; 31. Leading edge; 32. Trailing edge; 33. Reinforcing rib structure; 4. Second stepper motor; 5. Air duct. Detailed Implementation

[0032] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0033] It should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] Based on the background art, existing fans have a concentrated airflow that is not gentle enough, easily causing discomfort to users. This invention provides a fan and an air conditioner including the fan. By setting a drive device and blades, the drive device drives the blades to reciprocate perpendicular to the airflow direction. The sweeping angle of the blades is controlled according to the direction of the blade movement, so that the blades always generate airflow towards the airflow side during bidirectional oscillation, thereby making the fan blow out a gentle and even breeze that is closer to the feeling of natural wind.

[0035] To deliver a strong airflow and achieve efficient heat transfer, meeting the needs of rapid cooling or heating, existing air conditioning equipment generally uses axial or diagonal flow fans for external air delivery, such as air conditioners and electric fans. However, the airflow is relatively concentrated during high-speed rotation of these fans, resulting in a less gentle airflow. Prolonged use can easily cause discomfort to users, especially the elderly and children. At the same time, the high air pressure around the blades can also generate noticeable noise and even vibration.

[0036] For the reasons mentioned above, such as Figure 1 and Figure 2 As shown, the fan of this utility model includes a fixed base 1, a driving device and blades 3. The fixed base 1 is installed in the air duct 5 or the air ring, and the driving device is installed on the fixed base 1. The output end of the driving device is connected to the blades 3 and can drive the blades 3 to reciprocate perpendicular to the air outlet direction. The airflow is generated by the swinging of the blades 3.

[0037] On the one hand, the reciprocating motion of blade 3 can generate intermittent airflow, making the airflow gentler and more uniform, without being too concentrated, so as to blow a gentle breeze to the user and improve the user's comfort; on the other hand, it reduces the wind pressure around blade 3, thereby reducing the noise and vibration of the fan.

[0038] Exemplarily, regarding the driving device, this utility model has several preferred embodiments. In a first preferred embodiment, such as... Figures 1 to 3 As shown, the drive device can be configured as a first stepper motor 21 and a connecting arm 22. The first stepper motor 21 is mounted on a fixed base, and the blade 3 is mounted on the first stepper motor 21 through the connecting arm 22. Specifically, the connecting arm 22 is set perpendicular to the output shaft of the first stepper motor 21, so that the first end of the connecting arm 22 is fixedly connected to the output shaft of the first stepper motor 21, and the second end of the connecting arm 22 is pivotally connected to the blade 3. Under the action of the first stepper motor 21, the connecting arm 22 and the blade 3 can reciprocate within a certain angle range around the output shaft of the first stepper motor 21, so as to realize the swinging and sweeping of the blade 3.

[0039] In a second preferred embodiment, the driving device can be configured as a drive motor and a linear oscillating mechanism, such as a cam mechanism or an eccentric rotation mechanism, so that the blade 3 is slidably connected to the surface of the cam mechanism, and the linear oscillation of the blade 3 is achieved by the distance difference between the cam surface and the rotation center.

[0040] There are many solutions for swing mechanisms, which will not be listed here. As long as the reciprocating motion of the blade 3 can be achieved, whether it is rotary reciprocating motion or linear reciprocating motion, it should be limited to the protection scope of this utility model.

[0041] This application preferably adopts a first stepper motor 21, which has a simple structure and is easy to implement. At the same time, the angle range of the reciprocating rotation of the blades 3 can be adjusted by adjusting the step angle of the first stepper motor 21, thereby adjusting the air outlet area.

[0042] Preferably, the reciprocating rotation angle of the blade 3 is set to 120° to 180°, so that the fan can generate a suitable air outlet area.

[0043] Furthermore, during the oscillation process, the rotation direction of blade 3 changes periodically. In order to ensure that blade 3 can generate airflow in the same direction (air outlet direction) regardless of the direction of movement, in this invention, such as... Figure 1 and Figure 3 As shown, the leading edge 31 of the blade 3 is located on the air inlet side of the fan, and the trailing edge 32 of the blade 3 is located on the air outlet side of the fan. The blade 3 is pivotally connected to the drive device and can rotate within a certain angle range so that the leading edge 31 is always obliquely in front of the trailing edge 32 in the direction of movement of the blade 3. That is, the rotation of the blade 3 is controlled according to the direction of movement of the blade 3 so that the positional relationship between the leading edge 31 and the trailing edge 32 meets the requirements of the wind direction.

[0044] Specifically, when the blade 3 moves, the leading edge 31 is always in front of the trailing edge 32 in the direction of movement of the blade 3. At the same time, since the leading edge 31 is always on the air intake side of the fan and the trailing edge 32 is always on the air outlet side of the fan, the guide surface of the blade 3 tends to tilt from the air intake side to the air outlet side in the direction from front to back. This makes the leading edge 31 responsible for cutting the air to compress the air along the surface of the blade 3 towards the air outlet side of the fan during the operation of the fan, and the trailing edge 32 responsible for sweeping the air towards the air outlet side, thereby forming an airflow towards the air outlet side.

[0045] For example, in order to achieve the linkage between the positional relationship of the leading edge 31 and the trailing edge 32 and the movement direction of the blade 3, the fan of this utility model also includes a second stepper motor 4 and a controller. The second stepper motor 4 is mounted on the connecting arm 22, so that the output shaft of the second stepper motor 4 is fixedly connected to the blade 3. The controller is communicatively connected to the blade 3 and the second stepper motor 4, and controls the positional relationship between the leading edge 31 and the trailing edge 32 according to the movement direction of the blade 3, so that the leading edge 31 is always obliquely in front of the trailing edge 32, and the blade 3 and its plane of rotation maintain a certain angle so as to press the air towards the outlet side to form an outlet airflow.

[0046] In practical applications, those skilled in the art can flexibly set the angle between the blade 3 and its plane of rotation. The larger the angle, the higher the air supply efficiency and air noise; the smaller the angle, the lower the air supply efficiency and air noise.

[0047] Preferably, the angle between the blade 3 and the plane of rotation is set to 30° to 45°. This ensures a good balance between the fan's air intake efficiency and noise level within this angle range, achieving a larger air volume and speed while also helping to control noise.

[0048] Preferably, such as Figure 1 and Figure 2 As shown, this invention includes multiple drive devices and multiple blades 3. The drive devices are spaced apart on the fixed base 1, and the blades 3 are all perpendicular to the air outlet direction. This arrangement helps ensure the volume and continuity of the airflow. More preferably, two drive devices and two blades 3 are symmetrically installed on both sides of the fixed base 1, enabling synchronous oscillation of the two blades 3.

[0049] Preferably, such as Figures 1 to 3 As shown, the leading edge 31 and / or trailing edge 32 of this invention are configured with a serrated structure. This achieves a biomimetic design for the blade 3. The serrated structure of the leading edge 31 of the blade 3 optimizes its aerodynamic performance and increases the air intake at the front end of the blade 3 during movement. The serrated structure of the trailing edge 32 of the blade 3 generates vortices when air flows at high speed, ensuring a more uniform distribution of air velocity and optimizing the pressure difference distribution at the tail of the blade 3. This helps reduce the impact and vibration between the blade 3 and the gas, thereby reducing noise and vibration and achieving noise reduction.

[0050] Preferably, such as Figure 3 As shown, the blade 3 of this invention is also provided with a reinforcing rib structure 33. Multiple reinforcing ribs are provided, including those parallel to the direction of movement of the blade 3 and those perpendicular to the direction of movement of the blade 3. This helps to improve the overall strength of the blade 3, increase the sweeping efficiency, and at the same time prevent deformation and vibration of the blade 3 during the sweeping process, thereby reducing noise.

[0051] Preferably, such as Figure 3 As shown, the surface of the blade 3 of this invention is configured with a continuously undulating wave structure. More preferably, the wave structure extends perpendicular to the direction of movement of the blade 3, which can increase the overall strength of the blade 3 and reduce the eddies generated by the blade 3 during sweeping, thereby reducing the noise of the fan.

[0052] Furthermore, the air conditioner provided by this utility model, based on the aforementioned fan, possesses the technical effects of the aforementioned fan. Compared to the air conditioner before the improvement, the air conditioner of this utility model has a gentler and more uniform airflow, which is closer to the feeling of natural wind. At the same time, it reduces noise and vibration, and improves the comfort and quietness of the air conditioner.

[0053] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A fan, characterized in that, The fan includes a fixed base (1), a drive device, and blades (3). The drive device is mounted on the fixed base (1) and is drivenly connected to the blades (3), enabling the blades (3) to reciprocate perpendicular to the airflow direction. The leading edge (31) of the blade (3) is located on the air inlet side of the fan, and the trailing edge (32) of the blade (3) is located on the air outlet side of the fan. The blade (3) is pivotally connected to the drive device and can rotate within a certain angle range so that the leading edge (31) is always obliquely in front of the trailing edge (32) in the direction of movement of the blade (3).

2. The fan according to claim 1, characterized in that, The driving device includes a first stepper motor (21) and a connecting arm (22). The first stepper motor (21) is mounted on the fixed base (1). The connecting arm (22) is arranged perpendicular to the output shaft of the first stepper motor (21). The first end of the connecting arm (22) is fixedly connected to the output shaft of the first stepper motor (21). The second end of the connecting arm (22) is pivotally connected to the blade (3) to drive the blade (3) to reciprocate in a direction perpendicular to the air outlet.

3. The fan according to claim 2, characterized in that, The fan also includes a second stepper motor (4) and a controller. The second stepper motor (4) is mounted on the connecting arm (22). The output shaft of the second stepper motor (4) is fixedly connected to the blade (3). The controller is communicatively connected to the blade (3) and the second stepper motor (4) and can control the position of the leading edge (31) and the trailing edge (32) according to the movement direction of the blade (3).

4. The fan according to claim 1, characterized in that, The number of driving devices and blades (3) are both multiple. Multiple driving devices are spaced apart on the fixed base (1), and multiple blades (3) are arranged perpendicular to the air outlet direction.

5. The fan according to claim 1, characterized in that, The leading edge (31) is configured with a serrated structure, and / or the trailing edge (32) is configured with a serrated structure.

6. The fan according to claim 1, characterized in that, The blade (3) is also provided with a reinforcing rib structure (33).

7. The fan according to claim 1, characterized in that, The surface of the blade (3) is configured as a continuously undulating waveform structure.

8. The fan according to claim 1, characterized in that, The angle between the blade (3) and the plane of rotation is set to 30° to 45°.

9. The fan according to claim 2, characterized in that, The blade (3) rotates back and forth perpendicular to the air outlet direction at an angle ranging from 120° to 180°.

10. An air conditioner, characterized in that, The air conditioner includes the fan according to any one of claims 1 to 9.

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