Fan assembly and air conditioning cabinet having the same

Abstract

The present invention provides a fan assembly and an air conditioning cabinet having the same. The fan assembly includes an air duct portion; a fan portion, the fan portion is arranged in one end of the air duct portion; a damper mechanism, the damper mechanism is connected to the air duct portion, the damper mechanism has a sealing position and a avoidance position, when the damper mechanism is in the sealing position, the damper mechanism and the air duct portion are arranged to form a ventilation channel, part of the outer peripheral side of the fan portion is exposed outside the ventilation channel, when the damper mechanism is in the avoidance position, the outer peripheral side of the end of the fan portion close to the air duct portion is exposed outside the air duct portion. This arrangement allows the fan portion to simultaneously suck the airflow on the outer peripheral side of the fan portion into the fan portion, or to discharge the airflow inside the air duct out of the air duct through the exposed part of the air duct, which can effectively increase the air intake efficiency or air outlet efficiency of the air duct portion, reduce the air volume loss, and then improve the energy utilization rate of the air conditioning cabinet having the fan assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning equipment, and in particular to a fan assembly and an air conditioning cabinet having the same. Background Art

[0002] At present, the most widely used fan blades on air-conditioning products are centrifugal fan blades, cross-flow fan blades and axial flow fan blades. Each fan blade has different effects to meet the requirements of different air-conditioning product development. Different fan blade forms are configured to meet the model development for different usage requirements and different air inlet and outlet needs. The mixed flow fan blades used in the prior art have a complex structure and large loss of flow, resulting in poor user experience. Summary of the invention

[0003] The main purpose of the present invention is to provide a fan assembly and an air conditioning cabinet having the same, so as to solve the problem of large air volume loss of air conditioners in the prior art.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a fan assembly is provided, comprising: an air duct portion; a fan portion, the fan portion being arranged in one end of the air duct portion; a damper mechanism, the damper mechanism being connected to the air duct portion, the damper mechanism having a sealing position and an avoidance position, when the damper mechanism is located at the sealing position, the damper mechanism and the air duct portion are arranged to form a ventilation channel, and a portion of the outer peripheral side of the fan portion is exposed outside the ventilation channel, and when the damper mechanism is located at the avoidance position, the outer peripheral side of the fan portion close to the end of the air duct portion is exposed outside the air duct portion.

[0005] Furthermore, the air duct portion includes a first air duct portion and a second air duct portion, the fan portion is arranged in the first end of the second air duct portion, the second end of the second air duct portion is arranged adjacent to the first air duct portion, and the damper mechanism, the first air duct portion, and the fan portion can be surrounded to form a ventilation channel.

[0006] Furthermore, the fan assembly also includes: an air duct switching mechanism, the air duct switching mechanism is arranged adjacent to the second air duct portion, the air duct switching mechanism includes a first switching mechanism and a second switching mechanism, the first switching mechanism can enable the first air duct portion to have a first open position to open the ventilation channel, and a first closed position to close the ventilation channel, the second switching mechanism can enable the first air duct portion to have a second open position to open the ventilation channel, and a second closed position to close the ventilation channel; wherein, when the first air duct portion is located at the first open position, the first end of the ventilation channel is the air inlet end, and the second end of the ventilation channel is the air outlet end, and when the first air duct portion is located at the second open position, the first end of the ventilation channel is the air outlet end, and the second end of the ventilation channel is the air inlet end.

[0007] Further, when the first air duct portion is located at the first closed position, the first air duct portion and the second air duct portion are arranged far apart, and when the first air duct portion is located at the first open position, the first air duct portion and the second air duct portion are connected to enclose a sealed ventilation channel.

[0008] Further, the first switching mechanism is connected to the first air duct portion, and the first air duct portion includes a plurality of annular air duct segments, and the plurality of annular air duct segments are movably connected in sequence along the axial direction of the second air duct portion; wherein, an annular air duct segment farthest from the second air duct portion among the plurality of annular air duct segments is connected to the installation base, and an annular air duct segment closest to the second air duct portion among the plurality of annular air duct segments is connected to the first switching mechanism.

[0009] Further, the multiple annular air duct segments include: a first component segment, a first end of the first component segment is connected to the installation base; a second component segment, a first end of the second component segment is connected to the second end of the first component segment; a third component segment, a first end of the third component segment is connected to the second end of the second component segment; a fourth component segment, a first end of the fourth component segment is connected to the second end of the third component segment, and the second end of the fourth component segment is connected to the second air duct portion, and the first switching mechanism is connected to the outer surface of the fourth component segment, the first switching mechanism can drive the fourth component segment to move upward in the vertical direction and drive the third component segment and the second component segment to move to the first closed position in turn, or the first switching mechanism can drive the fourth component segment to move downward in the vertical direction and drive the third component segment and the second component segment to move to the first open position.

[0010] Furthermore, a first rack is arranged on the outer surface of the fourth component segment along the vertical direction, and the first switching mechanism includes a first driving part, and a first driving gear meshing with the first rack is arranged at the output end of the first driving part.

[0011] Further, a first stop boss is arranged on the outer circumferential surface of the second end of the first component segment, a first sealing boss matching with the first stop boss is arranged on the inner circumferential surface of the first end of the second component segment, and / or a second stop boss is arranged on the outer circumferential surface of the second end of the second component segment, a second sealing boss matching with the second stop boss is arranged on the inner circumferential surface of the first end of the third component segment, a third stop boss is arranged on the outer circumferential surface of the second end of the third component segment, and a third sealing boss matching with the third stop boss is arranged on the inner circumferential surface of the first end of the fourth component segment.

[0012] Furthermore, the outer circumference of the first end of the second component segment is provided with a first limiter for limiting the third component segment, and / or the outer circumference of the first end of the third component segment is provided with a second limiter for limiting the fourth component segment.

[0013] Further, when the first air duct portion is located at the first closed position, the third component segment is located in the fourth component segment, the second component segment is located in the third component segment, and the first component segment is located in the second component segment.

[0014] Furthermore, the inner diameters of the fourth component segment, the third component segment, the second component segment and the first component segment are arranged to decrease in sequence.

[0015] Furthermore, the installation base includes: a support frame assembly, a first end of the first component segment is connected to the support frame assembly, a first switching mechanism is installed on the support frame assembly and connected to the fourth component segment, and a first through hole is provided in the middle of the support frame assembly for the fourth component segment, the third component segment, and the second component segment to pass through.

[0016] Furthermore, the support frame assembly includes: a duct fixing frame, a second through hole is provided in the middle of the duct fixing frame, and a first component segment is connected to the duct fixing frame; a first support frame, the first support frame is connected to the duct fixing frame, a first through hole is opened on the first support frame, and a distance is set between the upper surface of the first support frame and the lower surface of the duct fixing frame, and when the first air duct portion is in the first closed position, the end face of the second end of the fourth component segment is flush with the lower surface of the first support frame.

[0017] Furthermore, the second air duct portion includes: an air duct body, the diameter of the air duct body is gradually reduced from the first end to the second end of the air duct body, and the fan portion is arranged in the first end of the air duct body.

[0018] Furthermore, the fan unit includes: a hub; a plurality of mixed flow blades, the plurality of mixed flow blades are arranged at intervals along the circumference of the hub, and the mixed flow blades are arranged at a distance from the side wall of the air duct body; a blade driving unit, the blade driving unit is connected to the hub, and the blade driving unit can drive the hub to drive the mixed flow blades to rotate relative to the air duct body.

[0019] Furthermore, the fan unit also includes: a splitter blade, which is connected to the hub, there are multiple splitter blades, a splitter blade is arranged between adjacent mixed flow blades, and the length of the splitter blade in the vertical direction is smaller than the length of the mixed flow blade in the vertical direction.

[0020] Furthermore, the fan unit also includes: a guide blade, which is arranged in the second end of the duct body and connected to the side wall of the duct body. There are multiple guide blades, and the multiple guide blades are arranged at intervals along the circumference of the duct body. The multiple guide blades are all located above the fan unit.

[0021] Further, when the first air channel portion is located at the first open position, part of the guide blades extend into the first air channel portion.

[0022] Furthermore, the inner diameter of at least one of the plurality of annular air duct segments is a gradual structure, and the inner diameter of another annular air duct segment is a constant diameter structure.

[0023] Furthermore, the first air duct portion also includes: a fifth component segment, the fifth component segment includes a first skeleton, the first end of the first skeleton is movably connected to the second switching mechanism, and the first skeleton is used to install the air duct enclosure; a sixth component segment, the sixth component segment includes a second skeleton, the first end of the second skeleton is movably connected to the second switching mechanism, the fifth component segment and the sixth component segment are arranged opposite to each other, and the second skeleton is used to install the air duct enclosure, when the first air duct portion is located at the second open position, the fifth component segment and the sixth component segment are arranged to form a first sealed channel, and when the first air duct portion is located at the second closed position, the fifth component segment and the sixth component segment move along the radial direction of the second air duct portion to the first preset position; wherein, when the plurality of annular air duct segments are located at the first open position, the fifth component segment and the sixth component segment are located at the second closed position, and when the plurality of annular air duct segments are located at the first closed position, the fifth component segment and the sixth component segment may be located at the second open position and below the plurality of annular air duct segments.

[0024] Furthermore, the first air duct portion also includes: a seventh component segment, the seventh component segment includes a third skeleton, the first end of the third skeleton is movably connected to the second switching mechanism, the seventh component segment is located on the outside of the fifth component segment, the third skeleton is used to install the air duct enclosure, and the seventh component segment can drive the fifth component segment to move along the radial direction of the second air duct portion to the second closed position or the second open position; an eighth component segment, the eighth component segment includes a fourth skeleton, the first end of the fourth skeleton is movably connected to the second switching mechanism, the eighth component segment is located on the outside of the sixth component segment, the eighth component segment is arranged opposite to the seventh component segment, the second end of the seventh component segment and the second end of the eighth component segment can be enclosed to form a second sealed channel, the first sealed channel is connected to the second air duct portion by connecting to the second sealed channel, the fourth skeleton is used to install the air duct enclosure, and the eighth component segment can drive the sixth component segment to move along the radial direction of the second air duct portion to the second closed position or the second open position.

[0025] Furthermore, when the first air duct portion is located at the second open position, the seventh segment and the eighth segment are arranged to form a second sealed channel, and when the first air duct portion is located at the second closed position, the seventh segment and the eighth segment move along the radial direction of the second air duct portion to a second preset position.

[0026] Further, when the second switching mechanism drives the seventh and eighth segments to move outward along the radial direction of the second air duct portion to the first preset position, the seventh segment drives the fifth segment to move to the second preset position, and the eighth segment drives the sixth segment to move to the second preset position.

[0027] Further, at least one of the seventh component segment and the fifth component segment is provided with a first stop structure, and the seventh component segment drives the fifth component segment to move through the first stop structure, and / or, at least one of the eighth component segment and the sixth component segment is provided with a second stop structure, and the eighth component segment drives the sixth component segment to move through the second stop structure.

[0028] Further, the inner diameter of the first sealing channel is a constant diameter structure, and / or the inner diameter of the second sealing channel is arranged to gradually increase in a direction away from the first sealing channel.

[0029] Furthermore, a second rack extending in the horizontal direction is provided on the third frame and / or the fourth frame, and the second switching mechanism is provided with a second driving gear meshing with the second rack.

[0030] Further, the second switching mechanism includes: a second support frame, the second support frame is connected to the installation base, and the fifth component segment, the sixth component segment, the seventh component segment, and the eighth component segment are movably connected to the second support frame; a second driving unit, the output end of the second driving unit is provided with a second driving gear, and the second driving unit drives the fifth component segment and the seventh component segment to move along the first direction to the second open position through the second driving gear, and / or the second driving unit can drive the sixth component segment and the eighth component segment to move along the second direction opposite to the first direction to the second open position through the second driving gear.

[0031] Furthermore, a ventilation hole is provided in the middle of the second support frame, and when the seventh and eighth component segments are located at the second closed position, the inner circumferential surfaces of the seventh and eighth component segments are located outside the hole wall of the ventilation hole.

[0032] Furthermore, a vent is opened on the side wall of the second air duct portion, and the damper mechanism includes a first damper mechanism, which is arranged at the vent, has an avoidance position for opening the vent, and has a sealing position for closing the vent.

[0033] Furthermore, the first damper mechanism includes: a third driving part, which is connected to the second air duct part; a sliding door, which is slidably connected to the outer surface of the second air duct part, and the sliding door has a sealing position for closing the vent, and the sliding door has an avoidance position for opening the vent.

[0034] Furthermore, a sliding rack is provided on the outer surface of the sliding door, and a gear meshing with the sliding rack is provided at the output end of the third driving unit. The third driving unit can drive the sliding door to slide along the circumference of the second air duct portion.

[0035] Furthermore, the sliding door is an arc-shaped structure. When the sliding door is in the avoidance position, the inner surface of the sliding door fits with the outer surface of the second air duct portion. When the sliding door is in the sealing position, a sealed channel is enclosed between the inner surface of the sliding door and the inner surface of the second air duct portion.

[0036] Furthermore, there are multiple sliding doors, and the multiple sliding doors are stacked in the vertical direction.

[0037] Furthermore, at least one limiting slide rail is arranged on the outer surface of the second air duct portion, and the sliding door is slidably connected to the limiting slide rail.

[0038] Furthermore, a roller assembly is arranged in the limiting slide rail.

[0039] Furthermore, when the sliding door is located at the sealing position, the lower end portion of the fan portion close to the sliding door is exposed outside the second air duct portion.

[0040] Furthermore, the vent is an arc-shaped structure, and the arc of the vent is 90°.

[0041] Further, the damper mechanism includes a second damper mechanism, which includes: a fourth driving part, which is connected to the second air duct part; a damper assembly, which is movably connected to the second air duct part, and the fourth driving part can drive the damper assembly to move along the radial direction of the second air duct part to a sealing position or an avoidance position.

[0042] Furthermore, when the damper assembly is located at the sealing position, the first damper mechanism is located at the sealing position, the damper assembly and the first damper mechanism are arranged opposite to each other, and the end of the fan part located on one side of the damper assembly is located in the second air duct part surrounded by the damper assembly.

[0043] Furthermore, the second damper mechanism performs position switching operation independently of the first damper mechanism.

[0044] Furthermore, the damper assembly includes: a mounting plate, on which at least one second limiting slide rail is arranged, the first end of the second limiting slide rail is connected to the second air duct portion, and the second end of the second limiting slide rail is arranged away from the second air duct portion; an air inlet door, the air inlet door can be movably arranged in the second limiting slide rail, the outer edge of the air inlet door is provided with a damper rack, the output end of the fourth driving unit is provided with a driving gear meshing with the damper rack, the fourth driving unit can drive the air inlet door to be located in a sealing position or an avoidance position along the radial direction of the second air duct portion, when the air inlet door is located in the avoidance position, the air inlet door is arranged away from the second air duct portion, and the end of the fan portion located on the side of the air inlet door is exposed outside the second air duct portion.

[0045] Furthermore, the damper assembly also includes: a slide rail cover plate, which is connected to the mounting plate and is located above the mounting plate and the air inlet door.

[0046] Furthermore, there are multiple air inlet doors, which are connected in sequence to form an air inlet door structure with an inner wall surface being a curved surface.

[0047] Furthermore, a second roller assembly is arranged between the air inlet door and the second limiting slide rail.

[0048] According to another aspect of the present invention, an air conditioning cabinet is provided, comprising a fan assembly, wherein the fan assembly is the above-mentioned fan assembly.

[0049] Furthermore, the air conditioning cabinet includes: a shell having an upper air port and a lower air port; a heat exchanger, the heat exchanger is arranged in the shell, and at least one fan assembly is arranged in the shell. The fan assembly can introduce the airflow outside the shell into the shell through the upper air port, exchange heat with the heat exchanger, and then discharge it outside the shell through the lower air port. Alternatively, the fan assembly can introduce the airflow outside the shell into the shell through the lower air port, exchange heat with the heat exchanger, and then discharge it outside the shell through the upper air port.

[0050] By applying the technical solution of the present invention, a fan unit is arranged in an air duct having a fan unit, and the outer peripheral side close to the air duct unit can be exposed to the outside through a damper mechanism. Such an arrangement allows the fan unit to simultaneously suck the airflow on the outer peripheral side of the fan unit into the fan unit, or to discharge the airflow inside the air duct out of the air duct through the exposed part of the air duct, which can effectively increase the air intake efficiency or air outlet efficiency of the air duct unit, reduce the air volume loss, and thereby improve the energy utilization rate of the air-conditioning cabinet having the fan assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0052] Figure 1 It shows a schematic structural diagram of a first embodiment of a fan unit according to the present invention;

[0053] Figure 2 It shows a structural schematic diagram of a second embodiment of a fan unit according to the present invention;

[0054] Figure 3 A schematic structural diagram showing an embodiment in which the first air channel portion according to the present invention is located in a first open position;

[0055] Figure 4 A schematic cross-sectional structure diagram of an embodiment of the present invention in which the first air channel portion is located in a first open position is shown;

[0056] Figure 5 A schematic structural diagram showing an embodiment in which the first air channel portion is located in a first closed position according to the present invention;

[0057] Figure 6 A schematic cross-sectional structure diagram of an embodiment of the present invention in which the first air channel portion is located in a first closed position is shown;

[0058] Figure 7 A schematic cross-sectional structure diagram of an embodiment of the present invention in which the first air channel portion is located at a first closed position and cooperates with the first support frame;

[0059] Figure 8 A schematic structural diagram showing an embodiment in which the second switching mechanism according to the present invention is located in a second open position;

[0060] Fig. 9 A schematic cross-sectional view of an embodiment in which the second switching mechanism of the present invention is located in a second open position is shown;

[0061] Fig.10 A schematic structural diagram showing an embodiment in which the second switching mechanism according to the present invention is located in a second closed position;

[0062] Fig.11 A schematic cross-sectional view of an embodiment in which the second switching mechanism of the present invention is located in a second closed position is shown;

[0063] Fig.12 An exploded structural schematic diagram of an embodiment of a fan assembly according to the present invention is shown;

[0064] Fig.13 A schematic structural diagram of a first embodiment of a fan assembly according to the present invention is shown;

[0065] Fig.14 A schematic cross-sectional view of a first embodiment of a fan assembly according to the present invention is shown;

[0066] Fig.15 A schematic structural diagram of a second embodiment of a fan assembly according to the present invention is shown;

[0067] Fig.16 A schematic cross-sectional view of a second embodiment of a fan assembly according to the present invention is shown;

[0068] Fig.17 It shows an exploded structural schematic diagram of a second embodiment of a fan assembly according to the present invention;

[0069] Fig.18 A schematic structural diagram of a third embodiment of a fan assembly according to the present invention is shown;

[0070] Fig.19 A schematic cross-sectional view of a third embodiment of a fan assembly according to the present invention is shown;

[0071] Fig. 20 A schematic structural diagram of a fourth embodiment of a fan assembly according to the present invention is shown;

[0072] Fig.21 A schematic cross-sectional view of a fourth embodiment of a fan assembly according to the present invention is shown;

[0073] Fig. 22 A schematic diagram of an exploded structure of a fourth embodiment of a fan assembly according to the present invention is shown;

[0074] Fig.23 A schematic structural diagram of a fifth embodiment of a fan assembly according to the present invention is shown;

[0075] Fig.24 A cross-sectional structural schematic diagram of a fifth embodiment of a fan assembly according to the present invention is shown;

[0076] Fig.25 A schematic structural diagram of a sixth embodiment of a fan assembly according to the present invention is shown;

[0077] Fig.26 A cross-sectional structural schematic diagram of a sixth embodiment of a fan assembly according to the present invention is shown;

[0078] Fig. 27 shows an exploded structural schematic diagram of a sixth embodiment of a fan assembly according to the present invention;

[0079] Fig.28 An exploded structural schematic diagram of an embodiment of a damper assembly according to the present invention is shown.

[0080] The above drawings include the following reference numerals:

[0081] 10. The first air duct section;

[0082] 11. a first group of segments; 111. a first stop boss;

[0083] 12. second assembly section; 121. first sealing boss; 122. second stop boss; 123. first stop member;

[0084] 13. third assembly section; 131. second sealing boss; 132. third stop boss; 133. second stop member;

[0085] 14, fourth group segment; 141, first rack; 142, third sealing boss;

[0086] 15. First skeleton; 16. Second skeleton; 17. Third skeleton; 18. Fourth skeleton;

[0087] 20. Second air duct portion; 21. Air duct body; 22. Ventilation port;

[0088] 30. Fan unit; 31. Hub; 32. Mixed flow blade; 33. Splitter blade; 34. Guide blade;

[0089] 40. A first switching mechanism; 41. A first driving gear;

[0090] 50. Support frame assembly; 51. Air duct fixing frame; 52. First support frame;

[0091] 60. Ventilation hole; 61. First through hole; 62. Second through hole.

[0092] 70. second switching mechanism; 71. second driving gear; 72. second supporting frame;

[0093] 80, second rack;

[0094] 90. First damper mechanism; 91. Sliding door; 92. Sliding rack; 93. First limit slide rail; 94. First roller assembly; 95. Third driving unit;

[0095] 100. Second damper mechanism;

[0096] 101. Fourth driving unit; 102. Air door assembly; 103. Second limiting slide rail; 104. Air inlet door; 105. Air door rack; 106. Slide rail cover; 107. Second roller assembly; 108. Fixed block. DETAILED DESCRIPTION

[0097] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0098] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0099] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0100] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for the sake of clarity, the thickness of the layers and regions may be enlarged, and the same reference numerals are used to represent the same devices, and thus their descriptions will be omitted.

[0101] Combination Figures 1 to 28 As shown, according to a specific embodiment of the present invention, a fan assembly is provided.

[0102] Specifically, the fan assembly includes an air duct portion, a fan portion 30 and a damper mechanism. The fan portion 30 is arranged in one end of the air duct portion. The damper mechanism is connected to the air duct portion, and the damper mechanism has a sealing position and a avoidance position. When the damper mechanism is located at the sealing position, the damper mechanism and the air duct portion are arranged to form a ventilation channel, and part of the outer peripheral side of the fan portion 30 is exposed outside the ventilation channel. When the damper mechanism is located at the avoidance position, the outer peripheral side of the end of the fan portion 30 close to the air duct portion is exposed outside the air duct portion.

[0103] In this embodiment, a fan unit is arranged in an air duct having a fan unit, and the outer peripheral side close to the air duct unit can be exposed to the outside through a damper mechanism. Such an arrangement allows the fan unit to simultaneously suck the airflow on the outer peripheral side of the fan unit into the fan unit, or to discharge the airflow inside the air duct out of the air duct through the exposed part of the air duct, which can effectively increase the air intake efficiency or air outlet efficiency of the air duct unit, reduce the air volume loss, and thereby improve the energy utilization rate of the air-conditioning cabinet having the fan assembly.

[0104] The air duct portion includes a first air duct portion 10 and a second air duct portion 20. The fan portion 30 is arranged in the first end of the second air duct portion 20, and the second end of the second air duct portion 20 is arranged adjacent to the first air duct portion 10. The damper mechanism, the first air duct portion 10, and the fan portion 30 can be arranged to form a ventilation channel. The fan assembly also includes an air duct switching mechanism. The air duct switching mechanism is arranged adjacent to the second air duct portion 20, and the air duct switching mechanism includes a first switching mechanism 40 and a second switching mechanism 70. The first switching mechanism 40 can enable the first air duct portion 10 to have a first open position to open the ventilation channel, and a first closed position to close the ventilation channel, and the second switching mechanism 70 can enable the first air duct portion 10 to have a second open position to open the ventilation channel, and a second closed position to close the ventilation channel. Among them, when the first air duct portion 10 is located in the first open position, the first end of the ventilation channel is the air inlet end, and the second end of the ventilation channel is the air outlet end. When the first air duct portion 10 is located in the second open position, the first end of the ventilation channel is the air outlet end, and the second end of the ventilation channel is the air inlet end.

[0105] When the first air duct portion 10 is located at the first closed position, the first air duct portion 10 and the second air duct portion 20 are arranged far apart, and when the first air duct portion 10 is located at the first open position, the first air duct portion 10 and the second air duct portion 20 are connected to enclose a sealed ventilation channel.

[0106] Specifically, the first switching mechanism 40 is connected to the first air duct portion 10. The first air duct portion 10 includes a plurality of annular air duct segments, which are movably connected in sequence along the axial direction of the second air duct portion 20. Among them, one of the plurality of annular air duct segments that is farthest from the second air duct portion 20 is connected to the installation base, and one of the plurality of annular air duct segments that is closest to the second air duct portion 20 is connected to the first switching mechanism 40. Such a configuration can make the structure of the first air duct portion 10 simple and easily realize the switching of the preset position of the air duct.

[0107] The plurality of annular air duct segments include a first component segment 11, a second component segment 12, a third component segment 13 and a fourth component segment 14. The first end of the first component segment 11 is connected to the installation base. The first end of the second component segment 12 is connected to the second end of the first component segment 11; the first end of the third component segment 13 is connected to the second end of the second component segment 12. The first end of the fourth component segment 14 is connected to the second end of the third component segment 13, and the second end of the fourth component segment 14 is connected to the second air duct portion 20. The first switching mechanism 40 is connected to the outer surface of the fourth component segment 14, and the first switching mechanism 40 can drive the fourth component segment 14 to move upward in the vertical direction and drive the third component segment 13 and the second component segment 12 to move to the first closed position in turn. The first switching mechanism 40 can also drive the fourth component segment 14 to move downward in the vertical direction and drive the third component segment 13 and the second component segment 12 to move to the first open position. This arrangement can effectively reduce the installation space of the first air duct portion, while improving the reliability of the cooperation between the first air duct portion 10 and the second air duct portion.

[0108] Furthermore, a first rack 141 is provided along the vertical direction on the outer surface of the fourth component segment 14. The first switching mechanism 40 includes a first driving part, and the output end of the first driving part is provided with a first driving gear 41 meshing with the first rack 141. This arrangement can make the structure for driving the fourth component segment 14 simpler, and make the movement of the fourth component segment 14 more reliable and stable.

[0109] In order to improve the sealing performance between the air duct components, a first stop boss 111 is provided on the outer circumference of the second end of the first component segment 11. A first sealing boss 121 matching with the first stop boss 111 is provided on the inner circumference of the first end of the second component segment 12. A second stop boss 122 is provided on the outer circumference of the second end of the second component segment 12, a second sealing boss 131 matching with the second stop boss 122 is provided on the inner circumference of the first end of the third component segment 13, a third stop boss 132 is provided on the outer circumference of the second end of the third component segment 13, and a third sealing boss 142 matching with the third stop boss 132 is provided on the inner circumference of the first end of the fourth component segment 14.

[0110] Furthermore, the outer circumference of the first end of the second component segment 12 is provided with a first stopper for limiting the third component segment 13, and the outer circumference of the first end of the third component segment 13 is provided with a second stopper for limiting the fourth component segment 14. This arrangement enables the fourth component segment 14 to sequentially drive the other component segments to move to the preset position, thereby improving the reliability of the fan assembly.

[0111] When the first air duct portion 10 is in the first closed position, the third component segment 13 is located in the fourth component segment 14, the second component segment 12 is located in the third component segment 13, and the first component segment 11 is located in the second component segment 12. This arrangement can reduce the installation space required for the fan assembly, making the fan assembly more compact.

[0112] The inner diameters of the fourth component segment 14, the third component segment 13, the second component segment 12 and the first component segment 11 are arranged to decrease in sequence. This arrangement allows the fourth component segment 14, the third component segment 13, the second component segment 12 and the first component segment 11 to form a drum-shaped air duct structure, thereby improving the performance of the fan assembly.

[0113] Specifically, Figures 4 to 6 As shown, the installation base includes a support frame assembly 50. The first end of the first component segment 11 is connected to the support frame assembly 50. The first switching mechanism 40 is installed on the support frame assembly 50 and connected to the fourth component segment 14. The middle part of the support frame assembly 50 is provided with a first through hole 61 for the fourth component segment 14, the third component segment 13, and the second component segment 12 to pass through. This arrangement can improve the stability of the fan assembly.

[0114] The support frame assembly 50 includes an air duct fixing frame 51 and a first support frame 52. A second through hole 62 is provided in the middle of the air duct fixing frame 51. The first component segment 11 is connected to the air duct fixing frame 51. The first support frame 52 is connected to the air duct fixing frame 51. The first through hole 61 is provided on the first support frame 52. The upper surface of the first support frame 52 is arranged at a distance from the lower surface of the air duct fixing frame 51, and when the first air duct portion 10 is located in the first closed position, the end surface of the second end of the fourth component segment 14 is flush with the lower surface of the first support frame 52.

[0115] The second air duct portion 20 includes an air duct body 21. The diameter of the air duct body 21 is gradually reduced from the first end to the second end of the air duct body 21, and the fan portion 30 is arranged in the first end of the air duct body 21. The fan portion 30 includes a hub 31, mixed flow blades 32 and a blade driving portion. There are multiple mixed flow blades 32, and the multiple mixed flow blades 32 are arranged at intervals along the circumference of the hub 31. The mixed flow blades 32 are arranged at a distance from the side wall of the air duct body 21. The blade driving portion is connected to the hub 31, and the blade driving portion can drive the hub 31 to drive the mixed flow blades 32 to rotate relative to the air duct body 21. Such an arrangement can improve the air outlet and air intake efficiency of the second air duct portion 20.

[0116] In order to further improve the air outlet performance of the second air duct portion 20, the fan portion 30 further includes a splitter blade 33 and a guide blade 34. The splitter blade 33 is connected to the hub 31, and there are multiple splitter blades 33. One splitter blade 33 is arranged between adjacent mixed flow blades 32, and the length of the splitter blade 33 along the vertical direction is less than the length of the mixed flow blade 32 along the vertical direction. The guide blade 34 is arranged in the second end of the air duct body 21 and connected to the side wall of the air duct body 21. There are multiple guide blades 34, and multiple guide blades 34 are arranged at intervals along the circumference of the air duct body 21, and multiple guide blades 34 are all located above the fan portion 30. When the first air duct portion 10 is in the first open position, part of the guide blades 34 extend into the first air duct portion 10.

[0117] In this embodiment, the inner diameter of at least one of the multiple annular air duct segments can be set to a gradual structure, i.e., a constricted structure, and the inner diameter of another annular air duct segment can be set to a constant diameter structure, i.e., a straight cylinder structure. This setting can also improve the air inlet and outlet efficiency of the fan assembly.

[0118] According to another embodiment of the present application, the first air duct section 10 further includes a fifth component section, a sixth component section, a seventh component section and an eighth component section. The fifth component section includes a first skeleton 15. The first end of the first skeleton 15 is movably connected to the second switching mechanism 70, and the first skeleton 15 is used to install the air duct enclosure. The sixth component section includes a second skeleton 16, and the first end of the second skeleton 16 is movably connected to the second switching mechanism 70. The fifth component section is arranged opposite to the sixth component section, and the second skeleton 16 is used to install the air duct enclosure. When the first air duct section 10 is located at the second open position, the fifth component section and the sixth component section are arranged to form a first sealed channel, and when the first air duct section 10 is located at the second closed position, the fifth component section and the sixth component section move to the first preset position along the radial direction of the second air duct section 20. Wherein, when the plurality of annular air duct sections are located at the first open position, the fifth component section and the sixth component section are located at the second closed position, and when the plurality of annular air duct sections are located at the first closed position, the fifth component section and the sixth component section can be located at the second open position and located below the plurality of annular air duct sections. The seventh component segment includes a third skeleton 17, and the first end of the third skeleton 17 is movably connected to the second switching mechanism 70. The seventh component segment is located outside the fifth component segment, and the third skeleton 17 is used to install the air duct enclosure. The seventh component segment can drive the fifth component segment to move to the second closed position or the second open position along the radial direction of the second air duct portion 20. The eighth component segment includes a fourth skeleton 18. The first end of the fourth skeleton 18 is movably connected to the second switching mechanism 70. The eighth component segment is located outside the sixth component segment, and the eighth component segment is arranged opposite to the seventh component segment. The second end of the seventh component segment and the second end of the eighth component segment can be enclosed to form a second sealed channel, and the first sealed channel is connected to the second air duct portion 20 by connecting to the second sealed channel. The fourth skeleton 18 is used to install the air duct enclosure, and the eighth component segment can drive the sixth component segment to move to the second closed position or the second open position along the radial direction of the second air duct portion 20. This arrangement enables each component segment to be located at a preset position through the switching mechanism, so that each air duct portion can achieve different air outlet methods. Fig. 9 As shown, A, B, C, and D in the figure represent the fifth component segment, the sixth component segment, the seventh component segment, and the eighth component segment, respectively.

[0119] When the first air duct portion 10 is located at the second open position, the seventh component segment and the eighth component segment are arranged to form a second sealed channel, and when the first air duct portion 10 is located at the second closed position, the seventh component segment and the eighth component segment move to the second preset position along the radial direction of the second air duct portion 20. After the second switching mechanism 70 drives the seventh component segment and the eighth component segment to move outward along the radial direction of the second air duct portion 20 to the first preset position, the seventh component segment drives the fifth component segment to move to the second preset position, and the eighth component segment drives the sixth component segment to move to the second preset position.

[0120] In order to improve the reliability of the movement of each component segment, at least one of the seventh component segment and the fifth component segment is provided with a first stop structure. The seventh component segment drives the fifth component segment to move through the first stop structure. At least one of the eighth component segment and the sixth component segment is provided with a second stop structure, and the eighth component segment drives the sixth component segment to move through the second stop structure.

[0121] Preferably, the inner diameter of the first sealed channel is a constant diameter structure. The inner diameter of the second sealed channel is gradually increased in a direction away from the first sealed channel. Such a setting can improve the air outlet efficiency of the air channel part in the fan assembly.

[0122] The third frame 17 and the fourth frame 18 are both provided with a second rack 80 extending in the horizontal direction, and the second switching mechanism 70 is provided with a second driving gear 71 meshing with the second rack 80. Such a configuration can improve the reliability and stability of the operation of each component section during the air duct switching process of the fan assembly.

[0123] The second switching mechanism 70 includes a second support frame 72. The second support frame 72 is connected to the installation base. The fifth component segment, the sixth component segment, the seventh component segment, and the eighth component segment are movably connected to the second support frame 72. The second driving unit, the output end of the second driving unit is provided with a second driving gear 71, and the second driving unit drives the fifth component segment and the seventh component segment to move to the second open position along the first direction through the second driving gear 71, and / or, the second driving unit can drive the sixth component segment and the eighth component segment to move to the second open position along the second direction opposite to the first direction through the second driving gear 71. The middle part of the second support frame 72 is provided with a ventilation hole 60, and when the seventh component segment and the eighth component segment are located in the second closed position, the inner circumference of the seventh component segment and the eighth component segment is located outside the hole wall of the ventilation hole 60. This arrangement makes the second switching mechanism 70 simple in structure and good in stability.

[0124] like Figures 18 to 22 As shown, the first damper mechanism 90 includes a sliding door 91 and a third driving part 95. The third driving part 95 is connected to the second air duct part 20. The sliding door 91 is slidably connected to the outer surface of the second air duct part 20, and the sliding door 91 has a sealing position for closing the vent 22, and the sliding door 91 has a avoidance position for opening the vent 22. This arrangement makes the structure of the first damper mechanism 90 simple and easy to process, and the first damper mechanism 90 can be easily driven to the vent 22 or driven away from the vent 22 by the third driving part 95.

[0125] The outer surface of the sliding door 91 is provided with a sliding rack 92, and the output end of the third driving part 95 is provided with a gear meshing with the sliding rack 92, and the third driving part 95 can drive the sliding door 91 to slide along the circumferential direction of the second air duct part 20. This arrangement can improve the stability of the sliding door 91 when sliding.

[0126] Preferably, the sliding door 91 is an arc-shaped structure. When the sliding door 91 is in the avoidance position, the inner surface of the sliding door 91 fits with the outer surface of the second air duct portion 20. When the sliding door 91 is in the sealing position, a sealed passage is formed between the inner surface of the sliding door 91 and the inner surface of the second air duct portion 20. This arrangement can reduce the space required for the sliding door 91 to slide. Preferably, the curvature of the sliding door 91 is the same as the curvature of the corresponding surface of the second air duct portion 20.

[0127] In order to enable the sliding door 91 to adapt to the second air duct portion 20 structure with different inner diameters and outer surfaces, a plurality of sliding doors 91 may be provided, and the plurality of sliding doors 91 are stacked in the vertical direction to form a sealing baffle structure.

[0128] In order to further improve the reliability of the sliding door when sliding, at least one first limiting slide rail 93 is provided on the outer surface of the second air duct portion 20. The sliding door 91 is slidably connected to the first limiting slide rail 93. Fig.21 As shown, first limiting slide rails 93 are respectively provided at the upper end and the lower end of the outer surface of the second air duct portion 20 .

[0129] like Fig.21 As shown, in order to enable the sliding door 91 to slide smoothly on the outer peripheral side of the second air duct portion 20, a first roller assembly 94 can be arranged in the first limiting slide rail 93. This arrangement can reduce the friction between the sliding door 91 and the second air duct portion 20.

[0130] In this embodiment, when the sliding door 91 is located at the sealing position, the lower end portion of the fan portion 30 close to the sliding door 91 is exposed outside the second air duct portion 20 .

[0131] Preferably, the vent 22 is an arc-shaped structure, and the arc of the vent 22 is 90°. This arrangement can improve the performance of the fan assembly.

[0132] like Figures 23 to 28 As shown, according to another embodiment of the present application, the damper mechanism includes a second damper mechanism 100. The second damper mechanism 100 includes a fourth driving portion 101 and a damper assembly 102. The fourth driving portion 101 is connected to the second air duct portion 20. The damper assembly 102 is movably connected to the second air duct portion 20, and the fourth driving portion 101 can drive the damper assembly 102 to move along the radial direction of the second air duct portion 20 to a sealing position or a avoiding position.

[0133] Specifically, when the damper assembly 102 is located at the sealing position, the first damper mechanism 90 is located at the sealing position, the damper assembly 102 is arranged opposite to the first damper mechanism 90, and the end of the fan part 30 located on one side of the damper assembly 102 is located in the second air duct part 20 surrounded by the damper assembly 102. The second damper mechanism 100 and the first damper mechanism 90 perform position switching operations independently. Such an arrangement can realize independent control of the damper mechanism and improve the reliability of the fan assembly.

[0134] like Fig. 27 As shown, the damper assembly 102 includes a mounting plate and an air inlet door 104. At least one second limiting slide rail 103 is arranged on the mounting plate. The first end of the second limiting slide rail 103 is connected to the second air duct portion 20, and the second end of the second limiting slide rail 103 is arranged away from the second air duct portion 20. The air inlet door 104 can be movably arranged in the second limiting slide rail 103, and the outer edge of the air inlet door 104 is provided with a damper rack 105, and the output end of the fourth driving unit 101 is provided with a driving gear meshing with the damper rack 105. The fourth driving unit 101 can drive the air inlet door 104 to be located in a sealing position or an avoidance position along the radial direction of the second air duct portion 20. When the air inlet door 104 is located in the avoidance position, the air inlet door 104 is arranged away from the second air duct portion 20, and the end of the fan unit 30 located on the side of the air inlet door 104 is exposed outside the second air duct portion 20, as shown in FIG. Fig.26 As shown in F.

[0135] The air door assembly 102 also includes a slide rail cover 106. The slide rail cover 106 is connected to the mounting plate and is located above the mounting plate and the air inlet door 104. This arrangement can improve the reliability of the air door assembly and prevent dust from falling into the slide rail to affect the smoothness of the air inlet door sliding.

[0136] like Fig.28 As shown, there are multiple air inlet doors 104, and the multiple air inlet doors 104 are connected in sequence to form an air inlet door structure with an inner wall surface being a curved surface.

[0137] A second roller assembly 107 is provided between the air inlet door 104 and the second position-limiting slide rail 103. This arrangement reduces the friction between the air inlet door 104 and the slide rail, and improves the sliding smoothness of the air inlet door 104.

[0138] The fan assembly in the above embodiment can also be used in the technical field of air-conditioning equipment, that is, according to another aspect of the present invention, an air-conditioning cabinet is provided. The air-conditioning cabinet includes a fan assembly, and the fan assembly is the fan assembly in the above embodiment. Among them, the air-conditioning cabinet includes a shell and a heat exchanger. The shell has an upper air port and a lower air port. The heat exchanger is arranged in the shell, and at least one fan assembly is arranged in the shell. The fan assembly can introduce the airflow outside the shell into the shell through the upper air port, perform heat exchange with the heat exchanger, and then discharge it outside the shell through the lower air port. Alternatively, the fan assembly can introduce the airflow outside the shell into the shell through the lower air port, perform heat exchange with the heat exchanger, and then discharge it outside the shell through the upper air port.

[0139] Specifically, the air conditioning cabinet of the present application adopts a mixed flow fan with a special blade shape, which can realize the upper and lower air outlet modes of the upper and lower reversible air outlet duct. The effect of upper and lower convection air outlet is achieved by using the different air ducts. In order to realize the application on the air conditioning shell, a motion mechanism is designed on the air duct assembly to realize the upper and lower air outlet mode switching control method, and the motor gear is used to control each motion mechanism scheme to switch, so as to realize the conversion of the upper air outlet and lower air outlet modes, thereby meeting the requirements of two air flow circulations of the air conditioning shell. In the lower air outlet mode, the control of the switching mechanism is used. The lower end of the air duct sliding door is further reduced to increase the effect of the wind blade side air intake during the drum-shaped upper air outlet, so as to realize the switching scheme when further optimizing the upper air outlet effect.

[0140] There are two types of fan blades. One is the basic fan blade impeller, and the other is based on the same hub and blade shape. The large end of the hub in the middle of the fan blade is equipped with a splitter blade according to the need for rectification or increasing the working surface. This fan blade has both the effect of axial flow working air outlet and the effect of centrifugal fan blade. The two air ducts can meet the needs of upper and lower air outlets. The difference between the two air ducts is that the opening at the top of the fan blade is drum-shaped or contracted. When it is a drum-shaped upper opening, it can be used for upper air outlet, and when it is a contracted upper opening, it can be used for lower air outlet.

[0141] The air conditioner cabinet includes an air duct body, a mixed flow fan blade, a fan blade motor, and a support frame as a fixed structure. When the cooling mode is running, in order to avoid cold wind blowing directly on people and achieve the effect of shower-type cooling, the lower air inlet is opened and the upper air outlet is opened. At this time, the air duct mechanism is in the upper air outlet mode, that is, the shrinkage air duct skeleton moves outward under the drive of the switching motor, driving the other shrinkage air duct skeletons to move outward synchronously to the extent of exiting the inner circle of the fixed frame, giving way to the middle upper air outlet air duct structure, and then the drum-shaped air duct skeleton is superimposed from top to bottom. Under the action of the switching motor driven gear rack, the drum-shaped air duct skeleton moves downward and then overlaps the limiting structure of the previous skeleton through the inner circle of the upper edge of the skeleton, driving it to move downward together. When it is closed with the edge of the air duct body, the lower air outlet mechanism is closed first and then the upper air outlet mechanism is opened, and the whole is switched to the upper air outlet mode of cooling operation. At this time, when the fan blades rotate to do work, air is sucked from the lower end of the air duct opening, that is, the lower air outlet of the shell, and air is delivered out from the upper end of the air duct opening, that is, the upper air outlet of the shell. When the heating mode is running, hot air is blown out of the air-conditioning vent. Due to the problem of hot air floating, the blown hot air will float upward, causing heat to be concentrated in the upper space of the room. When the heating mode is selected, the duct switching mechanism switches the air outlet mode. Contrary to the upper switching mode, the switching process first closes the upper air outlet mechanism, and the switching motor drives the drum-shaped air duct frame to move upward, and drives the remaining frames to move upward at the same time to realize the closing of the upper air outlet mechanism, and then opens the lower air outlet mechanism, and the switching motor drives the shrinking air duct frame to move inward, and drives the remaining shrinking frames to move symmetrically inward through the inverted structure to form a closed shrinking air duct. Due to the principle and characteristics of the operation of the mixed flow fan blade, the air outlet mode at this time is changed to the lower air outlet mode, and air is sucked from the upper end of the air duct opening, that is, from the upper air inlet of the shell, and air is sent out from the lower end of the air duct opening and the lower vent of the shell, thereby realizing the upper-in and lower-out air supply mode of the heating mode, and better utilizing the indoor air heat distribution.

[0142] The fan assembly of the present application is to make full use of the centrifugal fan blade work effect of the mixed flow fan blade. The original air duct has the effect of sucking air from the upper end of the air duct and discharging air from the lower end of the air duct due to the change in pressure. The optimization scheme removes half of the circumference of the air duct wall at the fan blade position. The fan blade rotates during the centrifugal work, which can send the air out from the front diameter, reduce the air volume lost due to internal pressure, and increase the efficiency of the fan.

[0143] In order to open the front circular surface of the air duct wall and enhance the front radial air outlet effect, the air duct body is changed to the fan blade position on the original switching mechanism to remove half of the front air outlet to form a vent, and slide rail structures are added to the upper and lower ends of the remaining semicircular structure, and upper and lower roller assemblies are added to the circle slide rail position, a duct sliding door is added to the structure, and a rack structure is added to the sliding door. The switching motor gear performs circular motion to realize the opening and closing of the lower air duct optimization mechanism and improve the air outlet efficiency during lower air outlet.

[0144] According to another embodiment of the present application, the lower end inlet position of the upper air outlet in the closed state can be removed by a quarter to optimize the side air intake effect, increase the air intake volume and strengthen the upper air outlet volume.

[0145] In the present application, half of the duct wall surface at the fan blade position can be removed and designed as a sliding door. When the downward air outlet is optimized, the sliding door is opened to increase the downward air volume. The lower end of the sliding door is shortened by a quarter of the fan blade height. The original optimization of the downward air outlet requires that this quarter of the duct be designed as a motion air door mechanism. When the sliding door is closed and the air inlet door mechanism is not opened, a quarter of the front end of the duct wall is removed. Fig.24 As shown in FIG. 1 , when the air inlet door mechanism is opened outward, a quarter of the air duct wall surface at the lower end is exposed to the air inlet portion, as shown in FIG. Fig.26 As shown in E, the wind inlet effect at the lower end of the fan blade is optimized, thereby optimizing the upper wind outlet. Fig. 27 As can be seen from the exploded view, a quarter of the lower end of the air duct body is removed, and the sliding door is shortened for matching, and a track bracket, i.e., a mounting portion, is added to the lower end of the air duct body. The removed portion of the lower end of the air duct is designed as a moving air door component (a first air door mechanism and a second air door mechanism), and roller groups are arranged on the air inlet door to cooperate with the track bracket at the lower end of the air duct body to achieve sliding movement, and then fixed as a whole with a slide rail cover plate, wherein there are multiple air inlet doors, and cantilever grooves are arranged at both ends of the middle air inlet door, which are fixed as a whole with the middle air inlet door through a fixing block 108, a rack is arranged on the upper side of the air inlet door, and a driving motor is arranged on the side position of the slide rail cover plate for driving, so as to realize the movement of the air inlet door to the outside or inside, so as to control the opening and closing of the lower air inlet when the upper air is discharged, and improve the effect of the upper air discharge;

[0146] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0147] In addition to the above, it should be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of the present invention.

[0148] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0149] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fan assembly, characterized in that: include: Air duct department; A fan portion (30), the fan portion (30) being arranged in one end of the air duct portion; a damper mechanism, the damper mechanism being connected to the air duct portion, the damper mechanism having a sealing position and a avoiding position, when the damper mechanism is located at the sealing position, the damper mechanism and the air duct portion are arranged to form a ventilation passage, and a portion of the outer peripheral side of the fan portion (30) is exposed outside the ventilation passage, and when the damper mechanism is located at the avoiding position, the outer peripheral side of the fan portion (30) close to the end of the air duct portion is exposed outside the air duct portion; The air duct portion comprises a first air duct portion (10) and a second air duct portion (20); the fan portion (30) is arranged in a first end of the second air duct portion (20); the second end of the second air duct portion (20) is arranged adjacent to the first air duct portion (10); and the damper mechanism, the first air duct portion (10), and the fan portion (30) can be arranged to form the ventilation channel; an air duct switching mechanism, the air duct switching mechanism being arranged adjacent to the second air duct portion (20), the air duct switching mechanism comprising a first switching mechanism (40) and a second switching mechanism (70), the first switching mechanism (40) enabling the first air duct portion (10) to have a first open position for opening the ventilation passage, and a first closed position for closing the ventilation passage, the second switching mechanism (70) enabling the first air duct portion (10) to have a second open position for opening the ventilation passage, and a second closed position for closing the ventilation passage; Wherein, when the first air duct portion (10) is located at the first open position, the first end of the ventilation channel is the air inlet end, and the second end of the ventilation channel is the air outlet end; when the first air duct portion (10) is located at the second open position, the first end of the ventilation channel is the air outlet end, and the second end of the ventilation channel is the air inlet end.

2. The fan assembly according to claim 1, characterized in that: When the first air duct portion (10) is located at the first closed position, the first air duct portion (10) and the second air duct portion (20) are arranged remotely from each other; when the first air duct portion (10) is located at the first open position, the first air duct portion (10) and the second air duct portion (20) are connected to enclose the sealed ventilation channel.

3. The fan assembly according to claim 2, characterized in that: The first switching mechanism (40) is connected to the first air duct portion (10), the first air duct portion (10) comprising a plurality of annular air duct segments, the plurality of annular air duct segments being movably connected in sequence along an axial direction of the second air duct portion (20); Among the plurality of annular air duct segments, the one that is farthest from the second air duct portion (20) is connected to the installation base, and the one that is closest to the second air duct portion (20) is connected to the first switching mechanism (40).

4. The fan assembly according to claim 3, characterized in that: The plurality of annular air duct segments include: A first component segment (11), wherein a first end of the first component segment (11) is connected to the installation base; A second component segment (12), wherein a first end of the second component segment (12) is connected to a second end of the first component segment (11); a third component segment (13), wherein a first end of the third component segment (13) is connected to a second end of the second component segment (12); A fourth component segment (14), wherein a first end of the fourth component segment (14) is connected to a second end of the third component segment (13), and a second end of the fourth component segment (14) is connected to the second air duct portion (20); the first switching mechanism (40) is connected to an outer surface of the fourth component segment (14); the first switching mechanism (40) can drive the fourth component segment (14) to move upward in a vertical direction and drive the third component segment (13) and the second component segment (12) to move to the first closed position in sequence; or the first switching mechanism (40) can drive the fourth component segment (14) to move downward in a vertical direction and drive the third component segment (13) and the second component segment (12) to move to the first open position.

5. The fan assembly according to claim 4, characterized in that: A first rack (141) is provided on the outer surface of the fourth component segment (14) along the vertical direction, and the first switching mechanism (40) comprises a first driving part, and an output end of the first driving part is provided with a first driving gear (41) meshing with the first rack (141).

6. The fan assembly according to claim 4, characterized in that: A first stop boss (111) is provided on the outer circumferential surface of the second end of the first assembly segment (11), and a first sealing boss (121) matching with the first stop boss (111) is provided on the inner circumferential surface of the first end of the second assembly segment (12), and / or A second stop boss (122) is arranged on the outer circumferential surface of the second end of the second component segment (12), a second sealing boss (131) matching with the second stop boss (122) is arranged on the inner circumferential surface of the first end of the third component segment (13), a third stop boss (132) is arranged on the outer circumferential surface of the second end of the third component segment (13), and a third sealing boss (142) matching with the third stop boss (132) is arranged on the inner circumferential surface of the first end of the fourth component segment (14).

7. The fan assembly according to claim 4, characterized in that: The outer peripheral surface of the first end of the second group of segments (12) is provided with a first limiting member (123) for limiting the third group of segments (13), and / or The outer peripheral surface of the first end of the third component segment (13) is provided with a second limiting member (133) for limiting the fourth component segment (14).

8. The fan assembly according to claim 4, characterized in that: When the first air duct portion (10) is located in the first closed position, the third component segment (13) is located in the fourth component segment (14), the second component segment (12) is located in the third component segment (13), and the first component segment (11) is located in the second component segment (12).

9. The fan assembly according to claim 4, characterized in that: The inner diameters of the fourth component segment (14), the third component segment (13), the second component segment (12) and the first component segment (11) are arranged to decrease in sequence.

10. The fan assembly according to claim 4, characterized in that: The installation base includes: A support frame assembly (50), wherein a first end of the first component segment (11) is connected to the support frame assembly (50), the first switching mechanism (40) is mounted on the support frame assembly (50) and connected to the fourth component segment (14), and a first through hole (61) is provided in the middle of the support frame assembly (50) for the fourth component segment (14), the third component segment (13), and the second component segment (12) to pass through.

11. The fan assembly according to claim 10, characterized in that: The support frame assembly (50) comprises: An air duct fixing frame (51), wherein a second through hole (62) is provided in the middle of the air duct fixing frame (51), and the first group of segments (11) are connected to the air duct fixing frame (51); A first support frame (52), the first support frame (52) being connected to the air duct fixing frame (51), the first support frame (52) being provided with the first through hole (61), an upper surface of the first support frame (52) being arranged at a distance from a lower surface of the air duct fixing frame (51), and when the first air duct portion (10) is located at the first closed position, an end surface of the second end of the fourth component segment (14) is flush with the lower surface of the first support frame (52).

12. The fan assembly according to claim 11, characterized in that: The second air channel portion (20) comprises: An air duct body (21), wherein the diameter of the air duct body (21) is gradually reduced from the first end to the second end of the air duct body (21), and the fan part (30) is arranged in the first end of the air duct body (21).

13. The fan assembly according to claim 12, characterized in that: The fan unit (30) comprises: Hub (31); Mixed flow blades (32), the mixed flow blades (32) being multiple, the multiple mixed flow blades (32) being arranged at intervals along the circumference of the hub (31), and the mixed flow blades (32) being arranged at a distance from the side wall of the air duct body (21); A fan blade driving unit, the fan blade driving unit is connected to the wheel hub (31), and the fan blade driving unit can drive the wheel hub (31) to drive the mixed flow blade (32) to be rotatably arranged relative to the air duct body (21).

14. The fan assembly according to claim 13, characterized in that: The fan unit (30) further includes: A splitter blade (33), the splitter blade (33) being connected to the hub (31), the splitter blade (33) being multiple, one splitter blade (33) being arranged between adjacent mixed flow blades (32), the length of the splitter blade (33) along the vertical direction being shorter than the length of the mixed flow blade (32) along the vertical direction.

15. The fan assembly according to claim 13, characterized in that: The fan unit (30) further includes: A guide blade (34), the guide blade (34) being arranged in the second end of the air duct body (21) and connected to the side wall of the air duct body (21), the guide blade (34) being multiple, the multiple guide blades (34) being arranged at intervals along the circumference of the air duct body (21), and the multiple guide blades (34) being located above the fan part (30).

16. The fan assembly according to claim 15, characterized in that: When the first air channel portion (10) is located at the first open position, part of the guide blade (34) extends into the first air channel portion (10).

17. The fan assembly according to claim 3, characterized in that: The inner diameter of at least one of the plurality of annular air duct segments is a gradually changing structure, and the inner diameter of another annular air duct segment is a constant diameter structure.

18. The fan assembly according to claim 3, characterized in that: The first air duct portion (10) further comprises: A fifth component section, the fifth component section comprising a first frame (15), a first end of the first frame (15) being movably connected to the second switching mechanism (70), the first frame (15) being used for mounting an air duct enclosure; a sixth component segment, the sixth component segment comprising a second frame (16), a first end of the second frame (16) being movably connected to the second switching mechanism (70), the fifth component segment being arranged opposite to the sixth component segment, the second frame (16) being used for mounting an air duct enclosure, when the first air duct portion (10) is located at the second open position, the fifth component segment and the sixth component segment enclose a first sealed channel, and when the first air duct portion (10) is located at the second closed position, the fifth component segment and the sixth component segment move along the radial direction of the second air duct portion (20) to a first preset position; Among them, when the multiple annular air duct segments are located in the first open position, the fifth segment and the sixth segment are located in the second closed position; when the multiple annular air duct segments are located in the first closed position, the fifth segment and the sixth segment may be located in the second open position and below the multiple annular air duct segments.

19. The fan assembly according to claim 18, characterized in that: The first air duct portion (10) further comprises: a seventh component segment, the seventh component segment comprising a third frame (17), a first end of the third frame (17) being movably connected to the second switching mechanism (70), the seventh component segment being located outside the fifth component segment, the third frame (17) being used for mounting an air duct enclosure, and the seventh component segment being capable of driving the fifth component segment to move along a radial direction of the second air duct portion (20) to the second closed position or the second open position; An eighth component segment, wherein the eighth component segment includes a fourth skeleton (18), a first end of the fourth skeleton (18) being movably connected to the second switching mechanism (70), the eighth component segment being located outside the sixth component segment, the eighth component segment being arranged opposite to the seventh component segment, the second end of the seventh component segment and the second end of the eighth component segment being arranged to form a second sealed channel, the first sealed channel being connected to the second air duct portion (20) via the second sealed channel, the fourth skeleton (18) being used to install an air duct enclosure, and the eighth component segment being able to drive the sixth component segment to move along the radial direction of the second air duct portion (20) to the second closed position or the second open position.

20. The fan assembly according to claim 19, characterized in that When the first air duct portion (10) is located at the second open position, the seventh component segment and the eighth component segment are arranged to form the second sealed channel, and when the first air duct portion (10) is located at the second closed position, the seventh component segment and the eighth component segment move along the radial direction of the second air duct portion (20) to a second preset position.

21. The fan assembly according to claim 20, characterized in that When the second switching mechanism (70) drives the seventh component segment and the eighth component segment to move outwardly along the radial direction of the second air duct portion (20) to the first preset position, the seventh component segment drives the fifth component segment to move to the second preset position, and the eighth component segment drives the sixth component segment to move to the second preset position.

22. The fan assembly according to claim 21, characterized in that At least one of the seventh component segment and the fifth component segment is provided with a first stop structure, and the seventh component segment drives the fifth component segment to move through the first stop structure, and / or at least one of the eighth component segment and the sixth component segment is provided with a second stop structure, and the eighth component segment drives the sixth component segment to move through the second stop structure.

23. The fan assembly according to claim 19, characterized in that The inner diameter of the first sealing channel is a constant diameter structure, and / or the inner diameter of the second sealing channel is gradually increased in a direction away from the first sealing channel.

24. The fan assembly according to claim 19, characterized in that The third frame (17) and / or the fourth frame (18) is provided with a second rack (80) extending in the horizontal direction, and the second switching mechanism (70) is provided with a second driving gear (71) meshing with the second rack (80).

25. The fan assembly according to claim 19, characterized in that The second switching mechanism (70) comprises: a second support frame (72), the second support frame (72) being connected to the installation base, the fifth component segment, the sixth component segment, the seventh component segment, and the eighth component segment being movably connected to the second support frame (72); A second driving unit, wherein an output end of the second driving unit is provided with a second driving gear (71), and the second driving unit drives the fifth component segment and the seventh component segment to move along the first direction to the second open position through the second driving gear (71), and / or the second driving unit can drive the sixth component segment and the eighth component segment to move along a second direction opposite to the first direction to the second open position through the second driving gear (71).

26. The fan assembly according to claim 25, characterized in that A ventilation hole (60) is provided in the middle of the second support frame (72), and when the seventh component segment and the eighth component segment are located in the second closed position, the inner circumferential surfaces of the seventh component segment and the eighth component segment are located outside the hole wall of the ventilation hole (60).

27. The fan assembly according to claim 1, characterized in that A vent (22) is provided on a side wall of the second air duct portion (20), and the damper mechanism comprises a first damper mechanism (90), the first damper mechanism (90) being arranged at the vent (22), the first damper mechanism (90) having a avoidance position for opening the vent (22), and the first damper mechanism (90) having a sealing position for closing the vent (22).

28. The fan assembly according to claim 27, characterized in that The first damper mechanism (90) comprises: a third driving portion (95), the third driving portion (95) being connected to the second air duct portion (20); A sliding door (91), the sliding door (91) being slidably connected to the outer surface of the second air duct portion (20), the sliding door (91) having a sealing position for closing the ventilation opening (22), and the sliding door (91) having a avoiding position for opening the ventilation opening (22).

29. The fan assembly according to claim 28, characterized in that The outer surface of the sliding door (91) is provided with a sliding rack (92), and the output end of the third driving part (95) is provided with a gear meshing with the sliding rack (92). The third driving part (95) can drive the sliding door (91) to slide along the circumference of the second air duct part (20).

30. The fan assembly according to claim 28, characterized in that The sliding door (91) is an arc-shaped structure. When the sliding door (91) is located at the avoidance position, the inner surface of the sliding door (91) fits with the outer surface of the second air duct portion (20). When the sliding door (91) is located at the sealing position, a sealed passage is formed between the inner surface of the sliding door (91) and the inner surface of the second air duct portion (20).

31. The fan assembly according to claim 28, characterized in that There are a plurality of sliding doors (91), and the plurality of sliding doors (91) are stacked in a vertical direction.

32. The fan assembly according to claim 31, characterized in that At least one first limiting slide rail (93) is provided on the outer surface of the second air duct portion (20), and the sliding door (91) is slidably connected to the first limiting slide rail (93).

33. The fan assembly according to claim 32, characterized in that A first roller assembly (94) is arranged inside the first limiting slide rail (93).

34. The fan assembly according to claim 28, characterized in that When the sliding door (91) is located at the sealing position, the lower end portion of the fan portion (30) on the side close to the sliding door (91) is exposed outside the second air duct portion (20).

35. The fan assembly according to claim 27, characterized in that The vent (22) is an arc-shaped structure, and the arc of the vent (22) is 90°.

36. The fan assembly according to claim 27, characterized in that The damper mechanism comprises a second damper mechanism (100), wherein the second damper mechanism (100) comprises: a fourth driving portion (101), the fourth driving portion (101) being connected to the second air duct portion (20); A damper assembly (102), the damper assembly (102) being movably connected to the second air duct portion (20), and the fourth driving portion (101) being capable of driving the damper assembly (102) to move along the radial direction of the second air duct portion (20) to the sealing position or the avoidance position.

37. The fan assembly according to claim 36, characterized in that When the damper assembly (102) is located in the sealing position, the first damper mechanism (90) is located in the sealing position, the damper assembly (102) and the first damper mechanism (90) are arranged opposite to each other, and an end portion of the fan portion (30) located on one side of the damper assembly (102) is located within the second air duct portion (20) surrounded by the damper assembly (102).

38. The fan assembly according to claim 36, characterized in that The second damper mechanism (100) and the first damper mechanism (90) perform position switching operations independently.

39. The fan assembly according to claim 36, characterized in that The damper assembly (102) comprises: a mounting plate, wherein at least one second limiting slide rail (103) is arranged on the mounting plate, a first end of the second limiting slide rail (103) is connected to the second air duct portion (20), and a second end of the second limiting slide rail (103) is arranged away from the second air duct portion (20); An air inlet door (104), the air inlet door (104) being movably arranged in the second limiting slide rail (103), the outer edge of the air inlet door (104) being provided with an air door rack (105), the output end of the fourth driving unit (101) being provided with a driving gear meshing with the air door rack (105), the fourth driving unit (101) being capable of driving the air inlet door (104) to be located in the sealing position or the avoidance position along the radial direction of the second air duct portion (20), when the air inlet door (104) is located in the avoidance position, the air inlet door (104) is arranged away from the second air duct portion (20), and the end of the fan portion (30) located on one side of the air inlet door (104) is exposed outside the second air duct portion (20).

40. The fan assembly according to claim 39, characterized in that The damper assembly (102) further includes: A slide rail cover plate (106), the slide rail cover plate (106) being connected to the mounting plate and being located above the mounting plate and the air inlet door (104).

41. The fan assembly according to claim 39, characterized in that There are a plurality of air inlet doors (104), and the plurality of air inlet doors (104) are connected in sequence to form an air inlet door structure whose inner wall surface is a curved surface.

42. The fan assembly according to claim 40, characterized in that A second roller assembly (107) is provided between the air inlet door (104) and the second limiting slide rail (103).

43. An air conditioning cabinet, comprising a fan assembly, characterized in that: The fan assembly is the fan assembly according to any one of claims 1 to 42.

44. The air conditioning cabinet according to claim 43, characterized in that: The air conditioning cabinet comprises: A housing having an upper air outlet and a lower air outlet; The heat exchanger is arranged in the shell, and at least one fan assembly is arranged in the shell. The fan assembly can introduce the airflow outside the shell into the shell through the upper air port, exchange heat with the heat exchanger, and then discharge it outside the shell through the lower air port. Alternatively, the fan assembly can introduce the airflow outside the shell into the shell through the lower air port, exchange heat with the heat exchanger, and then discharge it outside the shell through the upper air port.

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