Fan, ducted fan and air conditioner

Abstract

The present disclosure relates to a fan, a ducted fan and an air conditioner, the fan comprising an air outlet part surrounding a main air outlet, a bottom wall surface of the air outlet part being provided with a lower air outlet, the lower air outlet being located upstream of the main air outlet, the lower air outlet being provided with a first flow dividing structure, the first flow dividing structure being used for guiding the airflow in the air outlet part to partially flow to the lower air outlet, the ducted fan being capable of reducing the generation of vortex and reducing noise.

Description

Technical Field

[0001] This disclosure relates to the field of air conditioning technology, specifically to a fan, a duct air conditioner, and an air conditioner. Background Technology

[0002] In related technologies, when airflow flows outward during the operation of a fan, the limited flow range of the airflow may result in many dead zones around the fan where the airflow cannot pass through, which can easily form eddies. The generation of eddies will cause noise, causing the fan to continuously emit noise pollution during operation, affecting the user experience. Utility Model Content

[0003] The purpose of this disclosure is to provide a fan, duct air conditioner, and air conditioner that can reduce the generation of eddies and lower noise.

[0004] To achieve the above objectives, this disclosure provides a fan, the fan including an air outlet portion surrounding a main air outlet, a lower air outlet being provided on the bottom wall of the air outlet portion, the lower air outlet being located upstream of the main air outlet, and a first diversion structure being provided in the lower air outlet, the first diversion structure being used to guide the airflow in the air outlet portion to partially flow to the lower air outlet.

[0005] Optionally, the first diversion structure includes a first driving member and a first diversion plate, the first diversion plate being movably disposed at the lower air outlet, and the first driving member being used to drive the first diversion plate to open or close the lower air outlet.

[0006] Optionally, at least one side wall of the air outlet is provided with a side air outlet, the side air outlet is located upstream of the main air outlet, and a second diversion structure is provided in the side air outlet, the second diversion structure is used to guide the airflow in the air outlet to flow partly to the side air outlet.

[0007] Optionally, the two opposite side walls of the air outlet are provided with side air outlets, and each side air outlet is provided with the second diversion structure.

[0008] Optionally, the second diversion structure includes a second driving member and a second diversion plate, the second diversion plate being movably disposed at the side air outlet, and the second driving member being used to drive the second diversion plate to open or close the side air outlet.

[0009] Optionally, the first diverter plate is rotatably disposed at the lower air outlet, and / or the second diverter plate is rotatably disposed at the side air outlet.

[0010] Optionally, both the first and second diverter plates are provided with a rotating shaft, and both have a first end and a second end that are arranged opposite to each other. The rotating shaft is disposed between the first end and the second end, and the portion located between the first end and the rotating shaft is used to open or close the corresponding lower air outlet or side air outlet.

[0011] Optionally, when the portion located between the first end and the rotating shaft opens the corresponding lower air outlet or side air outlet, the first end is disposed within the air outlet portion.

[0012] Optionally, the portion located between the first end and the rotating shaft includes an overlapping part, and both the bottom wall surface and the side wall surface have overlapping grooves. When the portion located between the first end and the rotating shaft closes the corresponding lower air outlet or side air outlet, the overlapping part overlaps in the corresponding overlapping groove.

[0013] According to a second aspect of this disclosure, a ducted air conditioner is provided, the ducted air conditioner including a housing and at least one fan disposed in the housing, the fan being the fan described above, the housing having a lower air outlet area located below the air outlet section, and a first diversion structure for guiding the airflow flowing out through the lower air outlet to the lower air outlet area.

[0014] Optionally, the duct air conditioner includes at least two fans, the housing has a middle air outlet area located between two adjacent air outlets, the side walls of the air outlets are provided with side air outlets, and the side air outlets of two adjacent fans are opposite each other, so that the second diversion structure is used to guide the airflow flowing out of the side air outlets to the middle air outlet area.

[0015] According to a third aspect of this disclosure, an air conditioner is provided, including a fan as described above, and a duct unit.

[0016] By using the above technical solution, a first diversion structure is set at the lower air outlet. Since the lower air outlet is located upstream of the main air outlet, the airflow in the air outlet section can be partially diverted to the lower air outlet before flowing out of the main air outlet. The airflow then flows to the lower part of the air outlet section through the lower air outlet, so that the airflow in the lower part of the air outlet section can flow continuously and stably. This reduces or even avoids the generation of vortices on the lower side of the air outlet section, thereby reducing the noise generated during the operation of the fan due to the generation of vortices.

[0017] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic cross-sectional view of the casing of a ducted air conditioner provided according to an embodiment of the present disclosure, wherein the lower air outlet area is shown;

[0020] Figure 2 This is a schematic cross-sectional view of the casing of a ducted air conditioner provided according to an embodiment of the present disclosure, wherein the central air outlet area is shown;

[0021] Figure 3 This is a schematic diagram of the overall structure of the centrifugal fan of the ducted air conditioner according to an embodiment of the present disclosure;

[0022] Figure 4 This is a cross-sectional schematic diagram of a centrifugal fan provided according to an embodiment of the present disclosure, wherein the flow splitting position of the first flow splitter plate is shown;

[0023] Figure 5 yes Figure 4 Enlarged view of point A;

[0024] Figure 6 This is a cross-sectional schematic diagram of a centrifugal fan provided according to an embodiment of the present disclosure, wherein the flow splitting position of the second flow splitter is shown;

[0025] Figure 7 yes Figure 6 Enlarged view of point B.

[0026] Explanation of reference numerals in the attached figures

[0027] 1-Air outlet, 11-Main air outlet, 12-Bottom wall, 13-Lower air outlet, 14-Side wall, 15-Side air outlet, 16-Overlap groove, 2-First diversion structure, 21-First diversion plate, 3-Second diversion structure, 31-Second diversion plate, 4-Rotating shaft, 51-First end, 52-Second end, 53-Overlap section, 6-Lower air outlet area, 7-Middle air outlet area, 10-Box body. Detailed Implementation

[0028] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0029] In this disclosure, unless otherwise stated, the directional terms "inner" and "outer" refer to "inner" and "outer" relative to the contour of the corresponding component itself. The directional terms "upper" and "lower" generally refer to "upper" and "lower" relative to each other in the direction of gravity when the corresponding component is in use. "Top" and "bottom" generally refer to "top" and "bottom" relative to the corresponding component in the direction of height when in use. Furthermore, the use of terms such as "first" and "second" is intended to distinguish different components and does not imply sequentiality or importance. In addition, in the following description, when referring to the accompanying drawings, the same reference numerals in different drawings denote the same elements. Those skilled in the art should understand that the above definitions are for explanation and illustration only and should not be construed as limiting the scope of this disclosure.

[0030] According to a specific embodiment of this disclosure, refer to Figures 1 to 7 As shown, a fan is provided. The fan includes an air outlet 1 surrounding a main air outlet 11. A lower air outlet 13 is provided on the bottom wall surface 12 of the air outlet 1. The lower air outlet 13 is located upstream of the main air outlet 11. A first diversion structure 2 is provided in the lower air outlet 13. The first diversion structure 2 is used to guide the airflow in the air outlet 1 to partially flow to the lower air outlet 13.

[0031] Through the above technical solution, by setting the first diversion structure 2 at the lower air outlet 13, since the lower air outlet 13 is located upstream of the main air outlet 11, the airflow in the air outlet 1 can be partially diverted to the lower air outlet 13 before flowing out of the main air outlet 11, and then flow to the lower part of the air outlet 1 through the lower air outlet 13, so that the airflow in the lower part of the air outlet 1 can flow continuously and stably, thereby reducing or even avoiding the generation of vortices in the lower part of the air outlet 1, thereby reducing the noise generated during the operation of the fan due to the generation of vortices.

[0032] In some embodiments of this disclosure, reference is made to Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, the first diversion structure 2 includes a first driving component and a first diversion plate 21. The first diversion plate 21 is movably disposed at the lower air outlet 13. The first driving component is used to drive the first diversion plate 21 to open or close the lower air outlet 13. When the fan noise is too loud and it is necessary to reduce the noise, the first driving component can be activated to drive the first diversion plate 21 to open the lower air outlet 13, so that the airflow flowing out of the main air outlet 11 can be partially diverted to the lower air outlet 13, thereby allowing the airflow to flow to the lower part of the air outlet 1, so that the airflow on the lower side of the air outlet 1 can flow continuously and stably, reducing the noise generated during the operation of the fan.

[0033] In some embodiments of this disclosure, reference is made to Figure 2 , Figure 3 , Figure 6 and Figure 7 As shown, at least one side wall 14 of the air outlet 1 is provided with a side air outlet 15, which is located upstream of the main air outlet 11. A second diversion structure 3 is provided in the side air outlet 15, which is used to guide the airflow in the air outlet 1 to partially flow to the side air outlet 15. In this way, by providing the second diversion structure 3 in the side air outlet 15, since the side air outlet 15 is located upstream of the main air outlet 11, the airflow in the air outlet 1 can be partially diverted to the side air outlet 15 when it flows out of the main air outlet 11, and then flow to the side of the fan through the side air outlet 15. This can reduce or even avoid the generation of vortices between the two air outlets 1, thereby further reducing the noise generated during the operation of the fan.

[0034] In other embodiments of this disclosure, one of the first diversion structure 2 and the second diversion structure 3 can be selectively opened to achieve noise reduction, or the first diversion structure 2 and the second diversion structure 3 can be opened simultaneously to achieve quiet operation of the fan. This disclosure does not impose any specific limitations on this.

[0035] In some embodiments of this disclosure, the two oppositely arranged side walls 14 of the air outlet 1 are each provided with a side air outlet 15, and each side air outlet 15 is provided with a second diversion structure 3. Thus, the second diversion structure 3 can divert the airflow exiting the air outlet 1, allowing the airflow to flow to the side air outlets 15 on both sides and to the sides of the air outlet 1, thereby avoiding the generation of vortices on both sides of the air outlet 1, and further ensuring the quiet operation of the fan.

[0036] In some embodiments of this disclosure, reference is made to Figure 2 , Figure 3 , Figure 6 and Figure 7 As shown, the second diversion structure 3 includes a second driving component and a second diversion plate 31. The second diversion plate 31 is movably disposed at the side air outlet 15. The second driving component is used to drive the second diversion plate 31 to open or close the side air outlet 15. This allows personnel to selectively open or close the second diversion plate 31 according to the operating conditions of the fan. When the fan operating noise is too high, and further noise reduction is needed after opening the first diversion plate 21, the second driving component can be activated to drive the second diversion plate 31 to open the side air outlet 15. This allows the airflow exiting the main air outlet 11 to be partially diverted to the side of the fan, thereby reducing or even avoiding the generation of vortices on the side of the fan and further reducing noise.

[0037] In some embodiments of this disclosure, reference is made to Figures 4 to 7As shown, the first diverter plate 21 is rotatably disposed at the lower air outlet 13, and / or the second diverter plate 31 is rotatably disposed at the side air outlet 15. This allows the first diverter plate 21 to rotate via the first driving member, opening the lower air outlet 13, and / or the second diverter plate to rotate via the second driving member, opening the side air outlet 15. Thus, by rotating the first diverter plate 21 and the second diverter plate 31, the space occupied by the first diverter plate 21 and the second diverter plate 31 is reduced, avoiding the need to reserve space for the first diverter plate 21 and the second diverter plate 31 when opening the lower air outlet 13 or the side air outlet 15 by translation, thereby improving the space utilization rate of the fan.

[0038] Both the first driving component and the second driving component can be constructed as motors. The motors are connected to the rotating shaft 4 so that the motors drive the rotating shaft 4 to rotate, thereby realizing the rotation of the first diverter plate 21 and the second diverter plate 31. This disclosure does not impose any specific limitations on this.

[0039] Furthermore, both the first diverter plate 21 and the second diverter plate 31 can be constructed as flat plates or curved plates, or partially as curved plates according to actual needs; this disclosure does not impose specific limitations in this regard. Multiple parallel first diverter plates 21 and second diverter plates 31 can be respectively disposed on the bottom wall surface 12 and the side wall surface 14. The first driving member and the second driving member can respectively drive the multiple first diverter plates 21 or the multiple second diverter plates 31 to rotate; this disclosure does not impose specific limitations in this regard.

[0040] In some embodiments of this disclosure, reference is made to Figure 5 and Figure 7 As shown, both the first diverter plate 21 and the second diverter plate 31 are provided with a rotating shaft 4, and each has a first end 51 and a second end 52 arranged opposite to each other. The rotating shaft 4 is located between the first end 51 and the second end 52, and the portion located between the first end 51 and the rotating shaft 4 is used to open or close the corresponding lower air outlet 13 or side air outlet 15. In this way, since the rotating shaft 4 is located between the first end 51 and the second end 52, the lower air outlet 13 or the side air outlet 15 can be closed or opened through the portion between the first end 51 and the rotating shaft 4, so that the lower air outlet 13 and the side air outlet 15 can be located upstream of the main air outlet 11. Furthermore, by limiting the distance between the rotating shaft 4 and the first end 51, the size of the lower air outlet 13 and the side air outlet 15 can be limited, thereby limiting the amount of airflow diverted from the lower air outlet 13 and the side air outlet 15, and preventing the airflow flowing out of the air outlet 1 from being excessively diverted through the lower air outlet 13 and the side air outlet 15. This ensures the airflow at the main air outlet 11, preventing any impact on the normal operation of the system.

[0041] The rotating shaft 4 can be rotatably connected to the corresponding bottom wall surface 12 or side wall surface 14, and both the first and second driving components are connected to the rotating shaft 4. In this way, the first and second diverter plates 21 and 31 can rotate around the shaft, allowing the first or second driving component to adjust the rotation angle of the first or second diverter plate 21 to adjust the direction of airflow guidance. This improves the accuracy of airflow guidance, thereby enhancing the efficiency and effectiveness of vortex elimination.

[0042] In some embodiments of this disclosure, reference is made to Figure 5 and Figure 7 As shown, when the portion located between the first end 51 and the rotating shaft 4 opens the corresponding lower air outlet 13 or side air outlet 15, the first end 51 is positioned inside the air outlet section 1. Thus, by positioning the first end 51 inside the air outlet section 1, the airflow exiting the air outlet section 1 flows out along the first end 51, effectively guiding the airflow into the lower air outlet 13 or side air outlet 15, thereby achieving precise airflow diversion. By positioning the second end 52 outside the air outlet section 1, so that the second end 52 is close to the lower air outlet 13 or side air outlet 15, the airflow can be guided to the lower air outlet area 6 or the middle air outlet area 7, satisfying the control of airflow direction, improving the elimination effect of vortices, and improving the noise reduction effect.

[0043] When the first diverter plate 21 and the second diverter plate 31 close the lower air outlet 13 and the side air outlet 15 in the part located between the first end 51 and the rotating shaft 4, the fan is in normal operation. When it is necessary to adjust the air conditioner to silent mode, the first drive unit can be activated to drive the first diverter plate 21 to rotate, thereby opening the lower air outlet 13. This allows the airflow in the air outlet 1 to partially flow to the first diverter plate 21 and be guided by the first diverter plate 21 to the lower part of the air outlet 1, thereby eliminating the vortex on the lower side of the air outlet 1 and achieving a noise reduction effect. When it is necessary to further reduce noise, the second drive unit can be activated to drive the second diverter plate 31 to rotate, thereby opening the side air outlet 15. At this time, the side air outlet 15 between the second diverter plate 31 and the side wall 14 is opened, allowing the airflow flowing out of the air outlet 1 to partially flow to the second diverter plate 31 and be guided by the second diverter plate 31 to the side of the fan, thereby eliminating the vortex between the two air outlets 1 and further improving the noise reduction effect. Therefore, by rotating the first diverter plate 21 and the second diverter plate 31 according to actual needs, the system can be put into normal operation or adjusted to a silent state to achieve noise reduction and improve customer experience.

[0044] In addition, depending on the position and size of the vortex at the bottom and side of the fan, the rotating shaft 4 can be set at the first end 51 or the second end 52 according to the actual situation, so as to reduce or increase the air volume of the split flow and improve the elimination effect of the vortex. This disclosure does not make specific restrictions in this regard.

[0045] In other embodiments, the first diverter plate 21 and the second diverter plate 31 may also be slidably connected to the inner side plate and the bottom plate, respectively. Thus, the first driving member and the second driving member can drive the first diverter plate 21 and the second diverter plate 31 to slide away from or near the air outlet 1, so as to open or close the lower air outlet 13 and the side air outlet 15. This disclosure does not impose specific limitations on this.

[0046] In some embodiments of this disclosure, reference is made to Figure 5 and Figure 7 As shown, the portion located between the first end 51 and the rotating shaft 4 includes an overlapping portion 53. Both the bottom wall surface 12 and the side wall surface 14 have overlapping grooves 16. When the portion between the first end 51 and the rotating shaft 4 closes the corresponding lower air outlet 13 or side air outlet 15, the overlapping portion 53 overlaps in the corresponding overlapping groove 16. Thus, when the portion between the first end 51 of the first diverter plate 21 and the rotating shaft 4 closes the corresponding lower air outlet 13 and side air outlet 15, the overlapping portion 53 can overlap in the corresponding overlapping groove 16. This restricts the rotation of the first diverter plate 21 and the second diverter plate 31, ensuring the stability and reliability of the first diverter plate 21 and the second diverter plate 31 under normal system operation. Simultaneously, it ensures the sealing effect of the main air outlet 1, preventing airflow turbulence, noise, or disruption to normal system operation due to inadequate sealing of the lower air outlet 13 or side air outlet 15 during normal operation.

[0047] According to a second aspect of this disclosure, a ducted air conditioner is provided, comprising a housing 10 and at least one fan disposed within the housing 10, the fan being as described above. The housing 10 has a lower air outlet region 6 located below the air outlet section 1. A first diversion structure 2 is used to guide the airflow exiting through the lower air outlet 13 towards the lower air outlet region 6. In the lower air outlet region 6 below the air outlet section 1, a vortex region is formed where the airflow passing through the air outlet section 1 cannot pass through, and other airflow components interact, causing the airflow to rotate. Thus, by providing the first diversion structure 2, the airflow exiting the main air outlet 11 from the air outlet section 1 can be diverted to the lower air outlet 13 and flow towards the lower air outlet region 6, thereby reducing or even preventing the formation of vortices in the lower air outlet region 6, thereby reducing the noise generated during the operation of the ducted air conditioner.

[0048] In addition, since the bottom wall surface 12 is close to the lower air outlet area 6, the second diverter plate 31 can guide the airflow flowing out of the air outlet 1 directly to the lower air outlet area 6, thereby reducing energy loss and improving the accuracy and efficiency of airflow guidance.

[0049] In some embodiments of this disclosure, reference is made to Figure 2 , Figure 3 and Figure 6 As shown, the ducted air conditioner includes at least two fans. The housing 10 has a central air outlet region 7 located between two adjacent air outlet sections 1. The side wall 14 of the air outlet section 1 is provided with side air outlets 15. The side air outlets 15 of the two adjacent fans face each other, so that the second diversion structure 3 is used to guide the airflow flowing out of the side air outlets 15 to the central air outlet region 7. In the central air outlet region 7 between the two adjacent air outlet sections 1, there is a vortex area formed by high-intensity vortices between the two adjacent main air outlets 11. In this way, by setting the second diversion structure 3, the airflow flowing out of the main air outlets 11 from the air outlet section 1 can be partially diverted to the side air outlets 15 and flow to the central air outlet region 7, thereby reducing or even avoiding the formation of vortices in the central air outlet region 7, thereby further reducing the noise generated during the operation of the ducted air conditioner.

[0050] In addition, since the side wall 14 is close to the middle air outlet area 7, a first diverter plate 21 is provided at the side air outlet 15 so that the first diverter plate 21 can guide the airflow flowing out of the air outlet 1 directly to the middle air outlet area 7, thereby reducing energy loss and improving the accuracy and efficiency of airflow guidance.

[0051] In the embodiments provided in this disclosure, the first diverter plate 21 and the second diverter plate 31 can be opened simultaneously to blow airflow towards the lower side of the air outlet 1 and between the two air outlets 1, thereby simultaneously preventing the generation of vortices in the lower air outlet area 6 and / or the middle air outlet area 7. Thus, by setting the first driving member and the second driving member to drive the first diverter plate 21 and the second diverter plate 31 respectively, the airflow through the air outlet 1 is guided to the lower air outlet area 6 and the middle air outlet area 7, thereby simultaneously eliminating vortices in the middle air outlet area 7 between adjacent fans and / or the lower air outlet area 6 below the air outlet 1, thereby reducing the noise of the ducted air conditioner during operation and improving the user experience.

[0052] In some embodiments of this disclosure, reference is made to Figure 5 and Figure 7 As shown, when the first diverter plate 21 opens the lower air outlet 13, and / or the second diverter plate 31 opens the side air outlet 15, the angle between the first diverter plate 21 and the bottom wall surface 12 is 10°~90°, and / or the angle between the second diverter plate 31 and the side wall surface 14 is 10°~90°. This allows for precise control of the airflow ratio diverted to the lower air outlet area 6 according to actual needs, thus meeting airflow control requirements. Similarly, setting the rotation angle of the second diverter plate 31 to 10°~90° allows for precise control of the airflow ratio diverted to the middle air outlet area 7 according to actual needs, also meeting airflow control requirements. This avoids situations where the rotation angle of the first diverter plate 21 or the second diverter plate 31 is greater than 90° or less than 10°, which would affect the airflow guiding effect and thus the noise reduction effect.

[0053] Preferably, the rotation angle of the first diverter plate 21 and / or the second diverter plate 31 can be set to 30°~60°, for example, 30°, 45° or 60°. This reduces the impact force of the airflow on the diverter plate when it flows towards it, preventing the first diverter plate 21 or the second diverter plate 31 from deforming or being damaged due to excessively large or small rotation angles, which could affect the structural stability and service life of the diverter plate. Simultaneously, it also prevents interference between the first diverter plate 21 or the second diverter plate 31 and the other diverter plate due to excessively large or small rotation angles, thus avoiding interference with the flow guiding effect.

[0054] In addition, the distance between the end of the first diverter plate 21 and the side wall surface 14 should be greater than the distance between the rotating shaft 4 of the second diverter plate 31 and the first end 51, and the distance between the end of the second diverter plate 31 and the bottom wall surface 12 should be greater than the distance between the rotating shaft 4 of the first diverter plate 21 and the first end 51, so as to avoid interference between the first diverter plate 21 and the second diverter plate 31 when they are opened, which would affect the flow guiding effect.

[0055] According to a second aspect of this disclosure, an air conditioner is provided, including a ducted unit as described above. This air conditioner possesses all the beneficial effects of the aforementioned ducted unit, which will not be elaborated upon herein.

[0056] Below, for reference Figures 1 to 7 As shown, this disclosure will provide a detailed description of the specific usage process of the ducted air conditioner in conjunction with the above-described specific embodiments. When the system is in normal operating mode, the first diverter plate 21 and the second diverter plate 31 close the lower air outlet 13 and the side air outlet 15. At this time, the overlapping part 53 overlaps with the overlapping groove 16, and the airflow in the air outlet 1 flows out through the main air outlet 11. When noise reduction is required and the air conditioner is adjusted to silent mode, the first drive unit drives the first diverter plate 21 to rotate, thereby opening the lower air outlet 13 between the first diverter plate 21 and the bottom wall surface 12. This allows the airflow in the air outlet 1 to partially flow to the first diverter plate 21 and be guided by the first diverter plate 21 to the lower air outlet area 6, thereby eliminating the vortex on the lower side of the air outlet 1 and achieving a noise reduction effect. When further noise reduction is required, the second drive unit drives the second diverter plate 31 to rotate, thereby opening the side air outlet 15 between the second diverter plate 31 and the side wall surface 14. This allows the airflow in the air outlet 1 to partially flow to the second diverter plate 31 and be guided by the second diverter plate 31 to the middle air outlet area 7, thereby eliminating the vortex between the two air outlets 1 and further improving the noise reduction effect.

[0057] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0058] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0059] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A fan, characterized in that, The fan includes an air outlet section surrounding a main air outlet. A lower air outlet is provided on the bottom wall of the air outlet section. The lower air outlet is located upstream of the main air outlet. A first diversion structure is provided in the lower air outlet. The first diversion structure is used to guide the airflow in the air outlet section to partially flow to the lower air outlet.

2. The fan according to claim 1, characterized in that, The first diversion structure includes a first driving member and a first diversion plate. The first diversion plate is movably disposed at the lower air outlet. The first driving member is used to drive the first diversion plate to open or close the lower air outlet.

3. The fan according to claim 1 or 2, characterized in that, At least one side wall of the air outlet is provided with a side air outlet, which is located upstream of the main air outlet. A second diversion structure is provided in the side air outlet, which is used to guide the airflow in the air outlet to flow partly to the side air outlet.

4. The fan according to claim 3, characterized in that, The two opposite side walls of the air outlet are each provided with a side air outlet, and each side air outlet is provided with a second diversion structure.

5. The fan according to claim 3, characterized in that, The second diversion structure includes a second driving member and a second diversion plate. The second diversion plate is movably disposed at the side air outlet. The second driving member is used to drive the second diversion plate to open or close the side air outlet.

6. The fan according to claim 5, characterized in that, The first diverter plate is rotatably disposed at the lower air outlet, and / or the second diverter plate is rotatably disposed at the side air outlet.

7. The fan according to claim 6, characterized in that, Both the first and second diverter plates are provided with a rotating shaft, and each has a first end and a second end that are arranged opposite to each other. The rotating shaft is located between the first end and the second end, and the part located between the first end and the rotating shaft is used to open or close the corresponding lower air outlet or side air outlet.

8. The fan according to claim 7, characterized in that, When the portion located between the first end and the rotating shaft opens the corresponding lower air outlet or side air outlet, the first end is disposed within the air outlet portion.

9. The fan according to claim 7, characterized in that, The portion located between the first end and the rotating shaft includes an overlapping portion, and both the bottom wall surface and the side wall surface have overlapping grooves. When the portion located between the first end and the rotating shaft closes the corresponding lower air outlet or side air outlet, the overlapping portion overlaps in the corresponding overlapping groove.

10. A ducted air conditioner, characterized in that, The ducted air handling unit includes a housing and at least one fan disposed within the housing, wherein the fan is the fan as described in any one of claims 1-9, and the housing has a lower air outlet area located below the air outlet section. The first diversion structure is used to guide the airflow flowing out of the lower air outlet to the lower air outlet area.

11. The duct air conditioner according to claim 10, characterized in that, The ducted air handling unit includes at least two fans, and the housing has an intermediate air outlet area located between two adjacent air outlet sections. The side wall of the air outlet is provided with a side air outlet, and the side air outlets of two adjacent fans are opposite each other, so that the second diversion structure can guide the airflow flowing out of the side air outlet to the middle air outlet area.

12. An air conditioner, characterized in that, Including the duct machine as described in claim 10 or 11.

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