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; a mixed flow fan section, at least part of which is disposed within the air duct, the mixed flow fan section including: a hub; a plurality of mixed flow blades, the plurality of mixed flow blades being spaced apart along the circumference of the hub and spaced from the sidewalls of the air duct; and a drive section connected to the hub, the drive section being capable of driving the hub to rotate the mixed flow blades relative to the air duct. A fan assembly employing this structure eliminates the outer ring structure of the mixed flow fan in the prior art, simplifies the structure of the mixed flow fan section, effectively improves the performance of the mixed flow fan section, and thereby enhances the user experience 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] Currently, the three most common impellers used in air conditioners are centrifugal, cross-flow, and axial flow. Each impeller has different functions to meet the development requirements of different air conditioners. Different impeller types are configured to meet different usage requirements and different air inlet and outlet modes. The mixed-flow impellers used in existing technologies are complex in structure and have significant airflow losses, resulting in a 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 complex mixed flow fan blade structure 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; a mixed flow fan portion, at least part of the mixed flow fan is arranged in the air duct, the mixed flow fan portion comprising: 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 walls of the air duct; a driving portion, the driving portion is connected to the hub, and the driving portion can drive the hub to drive the mixed flow blades to rotate relative to the air duct.

[0005] Furthermore, the fan assembly also includes: a splitter blade, which is connected to the hub. There are multiple splitter blades, and a splitter blade is arranged between adjacent mixed flow blades. The length of the splitter blade in the vertical direction is smaller than the length of the mixed flow blade in the vertical direction.

[0006] Furthermore, the air duct includes a first air duct, at least part of the mixed flow fan part is arranged in a first end of the first air duct, the first end of the first air duct forms an air inlet section, and the second end of the first air duct forms an air outlet section.

[0007] Furthermore, the inner diameter from the first end of the first air duct to the second end of the first air duct is first gradually increased and then gradually decreased.

[0008] Furthermore, the fan assembly includes: a first guide blade, which is arranged in the second end of the first air duct and connected to the side wall of the first air duct. There are multiple first guide blades, and the multiple first guide blades are arranged at intervals along the circumference of the first air duct. The multiple first guide blades are all located above the mixed flow blade.

[0009] Furthermore, a first guide air duct is formed between two adjacent first guide blades, and the direction of the inlet angle of the first guide air duct close to one end of the mixed flow blade is the same as the direction of the outlet angle of the second guide air duct formed between the two adjacent mixed flow blades.

[0010] Furthermore, the air duct includes a second air duct, at least part of the mixed flow fan part is arranged in the first end of the second air duct, the first end of the second air duct forms an air outlet section, and the second end of the second air duct forms an air inlet section.

[0011] Furthermore, the second air duct includes: a first component section, in which at least part of the mixed flow fan part is arranged in the first component section; a second component section, in which the first end of the second component section is connected to the first end of the first component section, and the second end of the first component section forms an outlet end; a third component section, in which the first end of the third component section is connected to the second end of the second component section, and the second end of the third component section forms an inlet end, and the inner diameter from the first end of the second component section to the second end of the second component section is gradually reduced, and / or the third component section is a columnar structure with equal diameter.

[0012] Furthermore, the inner diameter from the first end of the first component segment to the second end of the first component segment is gradually reduced.

[0013] Furthermore, the mixed flow fan section includes: a second guide blade, which is arranged in the second air duct and connected to the side wall of the second component segment and / or the third component segment. There are multiple second guide blades, and the multiple second guide blades are arranged at intervals along the circumference of the second air duct. The multiple second guide blades are all located above the mixed flow blade.

[0014] Furthermore, a third guide air duct is formed between two adjacent second guide blades, and the direction of the outlet angle of the third guide air duct close to one end of the mixed flow blade is the same as the direction of the inlet angle of the fourth guide air duct formed between two adjacent mixed flow blades.

[0015] 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.

[0016] Furthermore, the air-conditioning cabinet includes: a shell having an upper air inlet and a lower air inlet; 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 inlet, perform heat exchange with the heat exchanger, and then discharge it outside the shell through the lower air inlet, or the fan assembly can introduce the airflow outside the shell into the shell through the lower air inlet, perform heat exchange with the heat exchanger, and then discharge it outside the shell through the upper air inlet.

[0017] By applying the technical solution of the present invention and adopting a fan assembly of this structure, the outer ring structure of the mixed flow fan in the prior art is eliminated, the structure of the mixed flow fan part is simplified, the performance of the mixed flow fan part is effectively improved, and the user experience of the air-conditioning cabinet with the fan assembly is thereby improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It shows a structural schematic diagram of a first embodiment of a mixed flow fan portion according to the present invention;

[0020] Figure 2 It shows a structural schematic diagram of a second embodiment of a mixed flow fan portion according to the present invention;

[0021] Figure 3 It shows a structural schematic diagram of a first embodiment of a fan assembly according to the present invention;

[0022] Figure 4 A schematic cross-sectional view of a second embodiment of a fan assembly according to the present invention is shown;

[0023] Figure 5 shows a structural schematic diagram of a third embodiment of a fan assembly according to the present invention;

[0024] Figure 6 shows a schematic cross-sectional structural diagram of a fourth embodiment of a fan assembly according to the present invention;

[0025] Figure 7 shows a structural schematic diagram of a fifth embodiment of a fan assembly according to the present invention;

[0026] Figure 8 shows a schematic cross-sectional structural diagram of a sixth embodiment of a fan assembly according to the present invention;

[0027] Figure 9 A schematic structural diagram showing the upward airflow direction of the fan assembly according to the present invention is shown;

[0028] Figure 10 shows a structural schematic diagram of a seventh embodiment of a fan assembly according to the present invention;

[0029] Figure 11 shows a schematic cross-sectional structural diagram of an eighth embodiment of a fan assembly according to the present invention;

[0030] Figure 12 A structural schematic diagram showing the downward airflow direction of the fan assembly according to the present invention is shown.

[0031] The above drawings include the following reference numerals:

[0032] 10. First guide vane;

[0033] 20. Second guide vane;

[0034] 30. Mixed flow fan unit; 31. First air duct; 321. Hub; 322. Mixed flow blade; 323. Splitter blade;

[0035] 41. Second air duct; 411. First component section; 412. Second component section; 413. Third component section. DETAILED DESCRIPTION

[0036] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this 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.

[0037] 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, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0038] 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 are interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof 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 clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0039] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in a variety of different forms and should not be interpreted as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of this 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 layers and regions may be exaggerated, and the same reference numerals are used to represent the same devices, and thus their descriptions will be omitted.

[0040] Combine Figures 1 to 12 As shown, according to a specific embodiment of the present invention, a fan assembly is provided.

[0041] Specifically, the fan assembly includes an air duct and a mixed flow fan unit 30. At least a portion of the mixed flow fan unit 30 is disposed within the air duct. The mixed flow fan unit 30 includes a hub 321, mixed flow blades 322, and a drive unit. Multiple mixed flow blades 322 are spaced apart along the circumference of the hub 321. The mixed flow blades 322 are spaced apart from the sidewalls of the air duct. The drive unit is connected to the hub 321 and can drive the hub 321 to rotate the mixed flow blades 322 relative to the air duct.

[0042] In this embodiment, the fan assembly with this structure eliminates the outer ring structure of the mixed flow fan in the prior art, simplifies the structure of the mixed flow fan part, effectively improves the performance of the mixed flow fan part, and thereby improves the user experience of the air-conditioning cabinet with this fan assembly.

[0043] The fan assembly also includes splitter blades 323. These are connected to the hub 321. There are multiple splitter blades 323, with one splitter blade 323 positioned between adjacent mixing blades 322. The vertical length of the splitter blades 323 is shorter than that of the mixing blades 322. This arrangement improves the fan assembly's air delivery and intake performance.

[0044] like Figure 4 As shown, the air duct includes a first air duct 31. At least a portion of the mixed flow fan section 30 is disposed within the first end of the first air duct 31. The first end of the first air duct 31 forms an air inlet section, and the second end of the first air duct 31 forms an air outlet section. The inner diameter of the first air duct 31 gradually increases and then gradually decreases from the first end to the second end, forming a drum-shaped structure.

[0045] like Figure 7 and Figure 8As shown, to further improve the performance of the fan assembly, the fan assembly includes a first guide vane 10. The first guide vane 10 is disposed within the second end of the first air duct 31 and connected to the sidewall of the first air duct 31. There are multiple first guide vanes 10, which are spaced apart along the circumference of the first air duct 31 and are all located above the mixing flow blade 322.

[0046] like Figure 9 As shown, a first guide air duct is formed between two adjacent first guide blades 10, and the direction of the inlet angle of the first guide air duct near the end of the mixing flow blade 322 is the same as the direction of the outlet angle of the second guide air duct formed between the two adjacent mixing flow blades 322. This arrangement can further improve the smoothness of air intake and outlet of the fan assembly.

[0047] like Figure 5 As shown, in another embodiment of the present application, the air duct includes a second air duct 41, with at least a portion of the mixed flow fan section 30 disposed within the first end of the second air duct 41. The first end of the second air duct 41 forms an air outlet section, and the second end of the second air duct 41 forms an air inlet section. The second air duct 41 includes a first component section 411, a second component section 412, and a third component section 413. At least a portion of the mixed flow fan section 30 is disposed within the first component section 411. The first end of the second component section 412 is connected to the first end of the first component section 411. The second end of the first component section 411 forms the outlet. The first end of the third component section 413 is connected to the second end of the second component section 412. The second end of the third component section 413 forms the inlet. The inner diameter of the second component section 412 is configured to gradually decrease from the first end to the second end of the second component section 412. Of course, the third component section 413 can also be configured as a columnar structure with a constant diameter. This configuration can effectively improve the air intake and air discharge efficiency of the fan assembly.

[0048] like Figure 11 As shown, the inner diameter of the first segment 411 is gradually reduced from the first end to the second end of the first segment 411. This arrangement can increase the air outlet speed of the fan assembly and improve the applicability of the fan.

[0049] To further enhance the airflow and airflow efficiency of the second air duct 41, the mixed flow fan unit 30 is equipped with second guide vanes 20. These second guide vanes 20 are located within the second air duct 41 and connected to the sidewalls of the second and third component sections 412, 413. Multiple second guide vanes 20 are provided, spaced apart along the circumference of the second air duct 41. Each second guide vane 20 is positioned above the mixed flow vane 322.

[0050] like Figure 12As shown, a third guide air duct is formed between two adjacent second guide vanes 20. The direction of the outlet angle of the third guide air duct near the end of the mixing flow vane 322 is the same as the direction of the inlet angle of the fourth guide air duct formed between the two adjacent mixing flow vanes 322. This arrangement can effectively increase the air intake and outlet speeds of the second air duct, effectively improving the performance of the fan assembly.

[0051] The fan assembly in the above embodiment can also be used in the field of air conditioner technology. Specifically, according to another aspect of the present invention, a cabinet air conditioner is provided. The cabinet air conditioner includes a fan assembly, which is the fan assembly in the above embodiment. The cabinet air conditioner has an upper air inlet and a lower air inlet. By using the above fan assembly, air can be taken in through the upper air inlet and out through the lower air inlet, or vice versa.

[0052] Specifically, on the basis of applying mixed flow fans to achieve up and down air outlet, the air outlet efficiency of the air duct is optimized. On the basis of the new mixed flow fan on the cabinet air conditioner that can simultaneously meet both bottom-in and top-out and top-in and bottom-out modes, a guide vane structure is added to strengthen the inlet pre-rotation or outlet rectification effect on the air duct, which can improve the air outlet efficiency of both modes.

[0053] The mixed flow fan blades are wide and have no outer closed ring. The fan blades have both axial flow and centrifugal air supply during their working process. With two different air duct structures, they can achieve two air supply modes: top in and bottom out or bottom in and top out. When the air duct is a top out structure, Figure 4 and Figure 6 As shown, when the fan blades work to deliver air to the duct outlet, the rotation of the fan blades causes the air at the duct outlet to rotate along the duct wall. This causes the air inside the air conditioner housing to flow upwards in a spiral when the air exits the duct and reaches the heat exchanger. This constant rotation and change of direction causes air volume loss, resulting in a large loss of air volume at the outlet. When the duct has a bottom-out structure, the pressure change after the fan blades work creates a centrifugal effect, forming an airflow that flows downward or to the side. At this time, when the air enters from the top, because the duct opening is a straight-through opening, the air is sucked in from top to bottom. When the fan rotates and works, the upper end of the fan blades becomes the inlet angle, and the straight-through airflow after the air enters the top opening is immediately changed to a rotating airflow. The large change angle increases the load on the fan blades, and the energy loss caused by the airflow change increases, directly affecting the actual air volume output after work.

[0054] like Figure 8 and Figure 11The figure shows the schematic diagram of the air duct after adding guide vanes. Its characteristic is that a rotating array of guide vanes are added to the upper ends of the drum-shaped air duct for upward airflow and the constricted air duct for downward airflow. The guide vanes are fixed structures integrated with the air duct, dividing the air duct opening into multiple small flow channels. Their function is to rectify the airflow at the outlet of the air duct when the air is discharged upward into a vertical upward airflow, and to pre-rotate the airflow at the inlet of the air duct when the air is discharged downward into an airflow in the same direction as the blade inlet angle. Figure 9 and Figure 12 As shown, it is a schematic diagram of the work of the two air outlet methods. When it is an upper air outlet duct, the fan blade rotates to do work, and the air enters from the inlet angle of the lower end of the fan blade, and is sent upward along the fan blade. When the air is discharged at the outlet angle of the upper end of the fan blade, the air flow rotates in the inclined direction of the outlet angle. The air duct after adding the guide vane has the same or similar direction as the outlet angle of the upper end of the fan blade, and it is in a gradual arc shape upward, and finally becomes vertical upward at the upper end. After the air is discharged from the outlet angle of the upper end of the fan blade, the air is sent to the small flow channel formed by the array guide vane. The air flow inside the small flow channel flows along the gradual arc shape of the guide vane and then changes direction. Finally, the airflow of multiple array small flow channels is aggregated into an airflow that is concentratedly supplied upward, thereby reducing the loss caused by the rotation and direction change inside the air-conditioning shell. When the air duct is discharged from the bottom, the upper end of the fan blade becomes the inlet angle to draw air in from above, and the air is divided into several small flow channels through the guide vane at the upper end of the duct structure. The direction of the airflow is changed under the gradual arc shape of the guide vane, which creates a pre-rotation effect. The direction of the airflow when passing through the guide vane to the downward outlet is the same as the direction of the airflow inlet when the upper end of the fan blade is used as the inlet angle, thereby reducing the work done by the fan blade and increasing the output air volume efficiency of the fan.

[0055] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. 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 figures. For example, if the device in the 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.

[0056] In addition to the above, it should be noted that references to "one embodiment," "another embodiment," "an embodiment," and the like in this specification refer to specific features, structures, or characteristics described in conjunction with that embodiment as included in at least one embodiment generally described in this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in conjunction with any embodiment, it is intended that such feature, structure, or characteristic, when implemented in conjunction with other embodiments, also falls within the scope of the present invention.

[0057] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0058] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A fan assembly, characterized in that: include: An air duct, the air duct comprising a first air duct (31), a first end of the first air duct (31) forming an air inlet section, and a second end of the first air duct (31) forming an air outlet section; A mixed flow fan unit (30), at least a portion of the mixed flow fan unit (30) is disposed in the first end of the first air duct (31), and the mixed flow fan unit (30) comprises: Hub (321); Mixed flow blades (322), the mixed flow blades (322) being multiple, the multiple mixed flow blades (322) being arranged at intervals along the circumference of the hub (321), and the mixed flow blades (322) being arranged at a distance from the sidewall of the air duct; a driving portion, the driving portion being connected to the hub (321), and capable of driving the hub (321) to drive the mixed flow blade (322) to be rotatably arranged relative to the air duct; The air duct includes a second air duct (41), at least a portion of the mixed flow fan unit (30) is arranged in a first end of the second air duct (41), the first end of the second air duct (41) forms an air outlet section, and the second end of the second air duct (41) forms an air inlet section; The second air duct (41) comprises: a first component section (411), wherein at least a portion of the mixed flow fan section (30) is disposed within the first component section (411); a second component segment (412), wherein a first end of the second component segment (412) is connected to a first end of the first component segment (411), and a second end of the first component segment (411) forms an outlet end; a third component segment (413), wherein the first end of the third component segment (413) is connected to the second end of the second component segment (412), the second end of the third component segment (413) forms an inlet end, the inner diameter from the first end of the second component segment (412) to the second end of the second component segment (412) is gradually reduced, and / or the third component segment (413) is a columnar structure with a constant diameter; The inner diameter from the first end of the first component segment (411) to the second end of the first component segment (411) is gradually reduced.

2. The fan assembly according to claim 1, characterized in that The fan assembly further comprises: A splitter blade (323) is connected to the hub (321), there are a plurality of splitter blades (323), one splitter blade (323) is provided between adjacent mixed flow blades (322), and the length of the splitter blade (323) along the vertical direction is shorter than the length of the mixed flow blade (322) along the vertical direction.

3. The fan assembly according to claim 1, characterized in that The inner diameter from the first end of the first air duct (31) to the second end of the first air duct (31) is first gradually increased and then gradually decreased.

4. The fan assembly according to claim 3, characterized in that: The fan assembly includes: A first guide blade (10), wherein the first guide blade (10) is arranged in the second end of the first air duct (31) and connected to the side wall of the first air duct (31), and the first guide blades (10) are multiple, and the multiple first guide blades (10) are arranged at intervals along the circumference of the first air duct (31), and the multiple first guide blades (10) are all located above the mixed flow blade (322).

5. The fan assembly according to claim 4, characterized in that: A first guide air duct is formed between two adjacent first guide blades (10), and the direction of the inlet angle of the first guide air duct close to one end of the mixed flow blade (322) is the same as the direction of the outlet angle of the second guide air duct formed between the two adjacent mixed flow blades (322).

6. The fan assembly according to claim 1, characterized in that The mixed flow fan unit (30) includes: A second guide blade (20), the second guide blade (20) is arranged in the second air duct (41) and connected to the side wall of the second component section (412) and / or the third component section (413), the second guide blade (20) is multiple, the multiple second guide blades (20) are arranged at intervals along the circumference of the second air duct (41), and the multiple second guide blades (20) are all located above the mixed flow blade (322).

7. The fan assembly according to claim 6, characterized in that: A third guide air duct is formed between two adjacent second guide blades (20), and the direction of the outlet angle of the third guide air duct close to one end of the mixed flow blade (322) is the same as the direction of the inlet angle of the fourth guide air duct formed between the two adjacent mixed flow blades (322).

8. 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 7.

9. The air conditioning cabinet according to claim 8, characterized in that: The air conditioning cabinet includes: 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, 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.

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