Air handling device

Abstract

The embodiment of the application discloses an air treatment device, comprising: an air inlet and an air outlet; a filter assembly comprising a filter inner cavity; a fan assembly for sucking air from the air inlet towards the air outlet; a flow guide column, at least part of the flow guide column is arranged in the filter inner cavity, the flow guide column comprises flow guide fins, a plurality of flow guide fins are arranged to form a flow guide cavity, adjacent flow guide fins form a flow guide opening, the flow guide opening is communicated with the flow guide cavity, the air inlet and the air outlet; wherein, on the cross section of the air treatment device, the plurality of flow guide fins do not extend along the radial direction of the air treatment device, or the contour line of the plurality of flow guide fins forms a variable angle with the radial direction, or the contour line of the plurality of flow guide fins forms a preset angle with the radial direction.

Description

Technical Field

[0001] This application relates to the field of air purification technology, and more particularly to an air handling device. Background Technology

[0002] Air handling units are electrical devices that can improve indoor air quality. They can filter suspended particulate matter (such as PM2.5 and dust), harmful gases (such as formaldehyde and TVOC), and pollutants such as bacteria and viruses from the air, providing users with a clean and healthy breathing environment.

[0003] Air purification relies on the fan assembly within the air handling unit. The negative pressure generated by the fan assembly drives airflow at high speed through the composite filter to adsorb and decompose pollutants. However, during the continuous operation of the air handling unit, the high-speed airflow can easily generate broadband noise, especially at night or in quiet environments. This noise may affect the user's rest and work concentration, reducing the user experience. Utility Model Content

[0004] This application discloses an air handling device to solve the technical problem of excessive noise generated during operation.

[0005] This application discloses an air handling device, including: an air inlet and an air outlet; a filter assembly including a filter cavity; a fan assembly for drawing air from the air inlet toward the air outlet; and a guide column, at least a portion of which is disposed in the filter cavity. The guide column includes guide vanes, a plurality of guide vanes forming a guide cavity, and a guide opening formed between adjacent guide vanes. The guide opening communicates with the guide cavity, the air inlet, and the air outlet. In a cross-section of the air handling device, the plurality of guide vanes do not extend radially along the air handling device, or the outlines of the plurality of guide vanes form a varying angle with the radial direction, or the outlines of the plurality of guide vanes form a preset angle with the radial direction.

[0006] In one possible implementation, a plurality of the air guide vanes are used to guide air movement in a first direction; the fan assembly includes a fan wheel; and when the air handling equipment is operating, the fan wheel rotates in a direction at least partially the same as the first direction.

[0007] In one possible implementation, the wind turbine assembly includes a rotor with multiple blades, the blades extending from the root to the tail of the blade along a first involute in a horizontally projected plane; the tail of the guide vane is located within the guide cavity, and the guide vane extends from the tail of the guide vane to the root of the guide vane along a second involute.

[0008] In one possible implementation, the air inlet of the fan assembly is provided with a ventilation grille communicating with the air inlet and the air outlet, and the guide column is detachably disposed on the ventilation grille.

[0009] In one possible implementation, the guide column is located in the central region of the ventilation grille, and the outer diameter of the ventilation grille is larger than the outer diameter of the guide column at the end facing the fan assembly.

[0010] In one possible implementation, the air handling device further includes: a housing, wherein the air inlet and the air outlet are disposed on the housing; and a bottom cover, disposed at the bottom of the housing, wherein the end of the guide column extending toward the filter cavity is connected to the bottom cover.

[0011] In one possible implementation, the bottom cover is detachably connected to the housing.

[0012] In one possible implementation, the end of the guide column extending toward the filter cavity is provided with a first connector, and the bottom cover is provided with a second connector, wherein the first connector and the second connector are detachably connected.

[0013] In one possible implementation, the bottom cover includes an assembly portion that is recessed in a direction opposite to the fan assembly, a second connector is disposed within the assembly portion, and the guide column is inserted into the assembly portion to connect the first connector with the second connector.

[0014] In one possible implementation, the bottom cover and the housing are detachably connected by a threaded structure, the first connector and the second connector are respectively constructed as threads, and the bottom cover, the housing and the guide column can be disassembled simultaneously.

[0015] In one possible implementation, the guide vane is inclined relative to the axis of the fan assembly, so that the guide column expands from the end away from the fan assembly toward the end closer to the fan assembly.

[0016] In one possible implementation, the ventilation area of ​​the guide port on the side closer to the fan assembly is larger than the ventilation area on the side farther away from the fan assembly.

[0017] In one possible implementation, the guide vane has a first included angle θ1 relative to the axis of the fan assembly, where 8°≤θ1≤75°.

[0018] In one possible implementation, the guide column is connected to the air inlet of the fan assembly at one end facing the fan assembly.

[0019] In one possible implementation, the surface of the guide plate has a nanometer-scale roughness.

[0020] In one possible implementation, along the height direction of the air handling device, the length of the guide column located within the filter cavity is L1, and the length of the filter assembly is L2, wherein L1 / L2 ≥ 1 / 2.

[0021] The air handling equipment provided in this application embodiment has a guide column in the filter cavity of the filter assembly. The guide column includes multiple guide vanes. The guide ports between adjacent guide vanes are connected to the air inlet and air outlet of the air handling equipment. In a horizontal cross section, the outline of the guide vane forms a preset angle with the radial direction of the air handling equipment, or the outline of the guide vane forms a varying angle with the radial direction, that is, the guide vane does not extend along the radial direction of the air handling equipment. Since the guide surface does not extend along the vertical direction of the air handling equipment, when the airflow flows through the guide port to the air outlet, the guide vane guides the airflow, so that the airflow after being filtered by the filter assembly is pre-swirled by the guide column before entering the fan assembly. This makes the airflow in the guide column spiral upward, reducing the impact loss that may occur in the airflow path from the filter cavity to the fan assembly, allowing the airflow to pass through the impeller more smoothly, thereby reducing the noise caused by airflow dispersion and turbulence, and improving the user experience of the air handling equipment.

[0022] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of an air handling device provided in an embodiment of this application;

[0025] Figure 2 One of the cross-sectional views of an air handling device provided in this application embodiment;

[0026] Figure 3 A second cross-sectional view of an air handling device provided in an embodiment of this application;

[0027] Figure 4 This is one of the structural schematic diagrams of a guide column in an air handling device provided in an embodiment of this application;

[0028] Figure 5 This is a second schematic diagram of the structure of a guide column in an air handling device provided in an embodiment of this application;

[0029] Figure 6 This is a schematic diagram of the structure of a ventilation grille in an air handling device provided in an embodiment of this application;

[0030] Figure 7 A schematic diagram of the assembly of a guide column and a ventilation grille in an air handling device provided for an embodiment of this application;

[0031] Figure 8 This is the third schematic diagram of the structure of a guide column in an air handling device provided in this application embodiment.

[0032] Explanation of reference numerals in the attached figures:

[0033] 100 - Air handling equipment; 10 - Housing; 101 - Air inlet; 102 - Air outlet; 20 - Filter assembly; 201 - Filter cavity; 30 - Fan assembly; 301 - Impeller; 3011 - Blade; 302 - Air inlet; 40 - Guide column; 401 - Guide vane; 402 - Guide port; 403 - Guide cavity; 404 - First connector; 405 - Connecting rib; 50 - Ventilation grille; 501 - Mounting part; 502 - Ventilation opening; 60 - Bottom cover; 601 - Second connector; 602 - Assembly part. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0036] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0037] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0038] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components, and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0039] The air handling unit 100 provided in this application embodiment can be placed in a home or office environment to purify indoor air. During use, the air handling unit 100 operates with low noise, minimizing disruption to users' normal work and life.

[0040] Please see Figure 1 and Figure 2 This application provides an air handling device 100, which includes a housing 10. The housing 10 has a cavity structure, and a fan assembly 30 and a filter assembly 20 are disposed inside the housing 10. The filter assembly 20 and the fan assembly 30 can be arranged vertically inside the housing 10.

[0041] like Figure 1 and Figure 2 As shown, the housing 10 is provided with an air inlet 101 and an air outlet 102, forming an airflow channel between the air inlet 101 and the air outlet 102. The filter assembly 20 can be located within this airflow channel. The fan assembly 30 includes a fan wheel 301. When the fan wheel 301 rotates, it generates negative pressure suction. The negative pressure suction draws air from outside the air handling equipment 100 into the housing 10 through the air inlet 101. After the airflow is filtered by the filter assembly 20, the filtered clean air is accelerated and pressurized by the fan assembly 30 before flowing into the indoor environment, circulating repeatedly to improve the indoor air quality.

[0042] The filter assembly 20 may include at least one of a HEPA filter layer, an activated carbon layer, a metal filter, and a fabric filter layer. The filter assembly 20 may be a composite of the above materials to achieve a multi-stage filtration effect. The filter assembly 20 may be constructed as a hollow cylinder, with the hollow area being the filter cavity 201.

[0043] like Figure 1As shown, the air inlet 101 of the housing 10 includes multiple air inlets surrounding the outer periphery of the filter assembly 20. When the fan assembly 30 is working, indoor air enters the housing 10 through the multiple air inlets and enters the filter assembly 20 through the outer peripheral wall of the filter assembly 20 for filtration. The filtered air then enters the filter inner cavity 201.

[0044] like Figure 2 , Figure 4 and Figure 5 As shown, the air handling unit 100 also includes a guide column 40. The guide column 40 is disposed inside the housing 10 and is at least partially located in the filter cavity 201. The guide column 40 includes a plurality of guide vanes 401 arranged circumferentially spaced along the air handling unit 100. The plurality of guide vanes 401 enclose a non-closed guide cavity 403 that communicates with the filter cavity 201, that is, the guide column 40 has a cavity structure. A guide port 402 is formed between the guide vanes 401 that communicates with the guide cavity 403, the air inlet 101, and the air outlet 102. In this way, the clean airflow filtered by the filter assembly 20 enters the filter cavity 201, and then enters the guide cavity 403 through the guide port 402 of the guide column 40, and is then pressurized by the fan assembly 30 and flows to the air outlet 102.

[0045] like Figure 4 As shown, in the cross-section of the air handling unit 100, the outline of the guide vane 401 of the guide column 40 can be a curve, or a combination of curves and straight lines, so that the outline of the guide vane 401 can form a varying angle with the radial direction of the air handling unit 100. The outline of the guide vane 401 can also be a straight line, thus forming a preset angle (non-zero angle) with the radial direction. That is, the guide vane 401 does not extend radially along the air handling unit 100. Here, the radial direction of the air handling unit 100 can be understood as a straight line extending outwards from any point on the central axis of the air handling unit 100, perpendicular to that central axis.

[0046] When the guide vane 401 has the above-described structural form, the guide vane 401 is no longer simply arranged in a straight radial line along the air handling unit 100. Specifically, viewed in the cross-section of the air handling unit 100, the outline of each guide vane 401 maintains a certain angle with the radial line. This angle can be fixed or vary along the length of the guide vane. Therefore, when the airflow flows from the guide port 402 to the outlet 102, the guide vane 401 guides the airflow. The guide vane 401 can pre-rotate the airflow, and combined with the negative pressure suction generated by the fan assembly 30, the airflow entering the guide cavity 403 exhibits a rotating upward trend. The pre-rotation effect generated by the guide column 40 can reduce the potential impact loss of the airflow between the filter inner cavity 201, the guide cavity 403, and the fan assembly 30, allowing the airflow to enter the fan assembly 30 more smoothly, thereby reducing noise caused by airflow separation and turbulence.

[0047] It is worth noting that the airflow, after being pre-swirled by the guide column 40, already has a rotating velocity before entering the fan assembly 30. This reduces the relative velocity difference between the airflow and the fan assembly 30, lowering the kinetic energy loss caused by sudden changes in airflow velocity. This not only improves the operating efficiency of the fan assembly 30 but also allows it to operate at a lower speed while achieving the same purification effect, further reducing operating noise and energy consumption.

[0048] like Figure 2 As shown, the height of the guide column 40 can be adapted to the height of the filter assembly 20 in the vertical direction, so that airflow entering the filter assembly 20 from various heights can enter the guide column 40, thereby increasing the flow rate of the guide column 40. The guide column 40 and the fan assembly 30 can be coaxially arranged, thereby reducing airflow deflection and energy loss caused by axial misalignment between the guide column 40 and the fan assembly 30.

[0049] Thus, the air handling device 100 provided in this application embodiment has a guide column 40 in the filter cavity 201 of the filter assembly 20. The guide column 40 includes a plurality of guide vanes 401. The guide ports 402 between adjacent guide vanes 401 are connected to the air inlet 101 and the air outlet 102 of the air handling device 100. In a horizontal cross section, the outline of the guide vane 401 forms a preset angle with the radial direction of the air handling device 100, or the outline of the guide vane 401 forms a varying angle with the radial direction, that is, the guide vane 401 does not extend along the radial direction of the air handling device 100. Since the guide vane 401 no longer simply extends along the vertical direction of the air handling unit 100, after the airflow passes through the filter assembly 20 from the outside to the inside, the guide vane 401 generates a pre-rotation guiding effect on the airflow, making the airflow in the guide column 40 spiral upward, reducing the impact loss that may occur in the airflow path from the filter cavity 201 to the fan assembly 30, so that the airflow can enter the fan assembly 30 more smoothly, thereby reducing the noise caused by airflow separation and turbulence, and improving the user experience of the air handling unit 100.

[0050] In some embodiments, a plurality of guide vanes 401 are used to guide air to move in a first direction, and the fan assembly 30 includes a fan wheel 301, which rotates in the same direction as at least partially the first direction when the air handling equipment 100 is operating.

[0051] As described above, within the cross-section of the air handling unit 100, the outline of each guide vane 401 can exhibit a curved characteristic with curvature. When airflow passes through the guide vane 401, the guide vane 401 allows the airflow to rotate naturally and be thrown into the guide cavity along the outline of the guide vane 401. The direction in which the airflow leaves the guide vane 401 can be the first direction. The rotation direction of the impeller 301 can be understood as the rotation direction of the motor output shaft of the fan assembly 30. The first direction can be coordinated with the rotation direction of the impeller 301; it can be completely consistent or approximately consistent. After the airflow pre-rotates through the guide vane 401, it already possesses a rotation direction and rotation speed. When this airflow encounters the impeller 301 with the same rotation direction, the collision between the airflow and the impeller 301 can be reduced, thereby reducing noise.

[0052] like Figure 3 As shown, the wind turbine assembly 30 includes a centrifugal impeller 301. The impeller 301 may include a plurality of blades 3011, which, in a horizontally projected plane, extend along a first involute from the root to the tail of the blade 3011. This means that, in a horizontal cross-section, the first curve gradually extends and bulges outward from the root of the blade 3011 (near the central axis of the impeller 301) to the tail of the blade 3011 (away from the central axis of the impeller 301).

[0053] In some embodiments, in a horizontally projected plane, the tail of the guide vane 401 is located within the guide cavity 403, and the guide vane 401 unfolds along a second involute from its tail to its root. This means that, in a horizontal cross-section, the second curve gradually unfolds and bulges outward from the tail of the guide vane 401 (near the central axis of the air handling device 100) to its root (away from the central axis of the air handling device 100).

[0054] The seemingly opposite design directions of the first and second involute curves allow for smoother airflow while maintaining low noise. Specifically, when airflow flows from the larger diameter filter assembly 20 to the smaller diameter guide cavity 403, the guide vane 401, extending along the second involute, effectively guides the airflow to rotate and converge within the guide cavity 403. Subsequently, when the airflow enters the fan assembly, the structural shape of the blade 3011, extending along the first involute, precisely matches the direction of the pre-swirling airflow, allowing the airflow to smoothly accelerate from the inlet area of ​​the smaller diameter fan assembly 30 to the tip region of the larger diameter blade 3011.

[0055] Thus, when external airflow enters the guide cavity 403 through the guide port 402, the guide vanes 401 extending inward along the second involute can effectively apply a pre-swirl force to the airflow, guiding it to converge at the center of the guide cavity 403, thereby allowing it to enter the fan assembly 30 more smoothly. When the airflow subsequently enters the blade 3011 region of the fan assembly 30, the shape of the blades 3011 reduces the probability of abrupt changes in airflow direction, minimizing energy loss.

[0056] In some embodiments, such as Figure 4 and Figure 5 As shown, the two ends of the multiple guide vanes 401 can be connected by connecting ribs 405. Specifically, the connecting ribs 405 can be strip ribs or annular ribs, etc. The connecting ribs 405 and the multiple guide vanes 401 can be an integral structure, thereby improving the structural strength of the guide column 40.

[0057] In some embodiments, such as Figure 2 As shown, a ventilation grille 50 is provided at the air inlet 302 of the fan assembly 30. The ventilation grille 50 is connected to the guide cavity 403, the air inlet 101 and the air outlet 102.

[0058] like Figure 6 As shown, the ventilation grille 50 may include multiple ventilation openings 502, which are connected to the guide cavity 403, the air inlet 101 and the air outlet 102, so that airflow flows into the fan assembly 30 from the air inlet 101 or the guide cavity 403 and flows out of the fan assembly 30 from the air outlet 102.

[0059] The ventilation grille 50 can have a hollow section in the middle, and the guide column 40 can be connected to the hollow section. In this way, the airflow that has been pre-swirled by the guide column 40 can directly enter the fan assembly 30, further reducing the impact loss and noise that the airflow may generate.

[0060] like Figure 6 and Figure 7 As shown, the ventilation grille 50 has a mounting part 501 on its outer periphery. The mounting part 501 can be an integral structure with the ventilation grille 50. The mounting part 501 is connected to the housing 10 to provide structural support for the guide column 40.

[0061] In some embodiments, such as Figure 7 As shown, the airflow guide column 40 is detachably mounted on the ventilation grille 50. The airflow guide column 40 can be detachably mounted on the ventilation grille 50 by means of clips, screws, etc. The airflow guide column 40 is detachable from the ventilation grille 50, and the user can remove the airflow guide column 40 from the air handling unit 100 for cleaning or replacement.

[0062] In some embodiments, such as Figure 7 As shown, the guide column 40 is located in the central area of ​​the ventilation grille 50, and the outer diameter of the ventilation grille 50 is larger than the outer diameter of the guide column 40 at the end facing the fan assembly 30.

[0063] The outer diameter of the ventilation grille 50 is set to be larger than the outer diameter of the guide column 40 facing the fan assembly 30. That is, another annular airflow channel is formed on the outer periphery of the guide column 40. The airflow filtered by the filter assembly 20 can enter the fan assembly 30 through the guide column 40 and the ventilation grille 50.

[0064] Specifically, a portion of the airflow after passing through the filter assembly 20 undergoes pre-swirl treatment via the guide vanes 401 of the guide column 40, forming a spiraling upward airflow consistent with the rotation direction of the fan assembly 30. Simultaneously, another portion of the airflow around the guide column 40 directly enters the fan assembly 30 through the vents 502 of the ventilation grille 50. This diversion design effectively balances the airflow pressure distribution at the air inlet 302 of the fan assembly 30, reducing the probability of localized pressure overload that might occur due to airflow concentration at the guide column 40. This not only reduces noise but also improves the continuity of airflow entering the fan assembly 30.

[0065] In some embodiments, such as Figure 2 As shown, the air handling unit 100 also includes a bottom cover 60. The bottom cover 60 is disposed at the bottom of the housing 10, and the end of the guide column 40 extending toward the filter cavity 201 is connected to the bottom cover 60. The bottom cover 60 is disposed at the bottom of the housing 10, and the filter assembly 20 can be disposed on the bottom cover 60, which can provide structural support for the filter assembly 20.

[0066] One end of the guide column 40, facing away from the fan assembly 30, is connected to the bottom cover 60. Thus, in the vertical direction, one end of the guide column 40 can be connected to the fan assembly 30 or the ventilation grille 50 at the air inlet 302 of the fan assembly 30, while the other end of the guide column 40 is connected to the bottom cover 60, forming a stable upper and lower double-end support structure for the guide column 40, effectively suppressing vibrations that may occur when airflow passes through the guide column 40.

[0067] Furthermore, one end of the guide column 40 extends to the bottom cover 60, allowing the guide column 40 to have sufficient length to fit the filter assembly 20. This allows airflow from different heights, especially from the bottom of the filter assembly 20, entering the filter cavity 201 directly into the guide column 40, increasing the flow rate of the guide column 40 and enabling effective pre-swirl treatment of the bottom airflow, further improving the fan efficiency and reducing operating noise.

[0068] In some embodiments, the bottom cover 60 is detachably connected to the housing 10. The detachable connection between the bottom cover 60 and the housing 10 allows the user to quickly separate the bottom cover 60 from the housing 10, facilitating the replacement of the guide column 40 and the filter assembly 20, thus preventing performance degradation of the filter assembly 20 due to dust accumulation during long-term use.

[0069] In some embodiments, such as Figure 7 As shown, the end of the guide column 40 extending toward the filter inner cavity 201 is provided with a first connector 404, and the bottom cover 60 is provided with a second connector 601. The first connector 404 and the second connector 601 are detachably connected.

[0070] The flow guide column 40 is detachably connected to the second connector 601 of the bottom cover 60 via the first connector 404, so that the flow guide column 40 can be disassembled as an independent module.

[0071] The second connector 601 can be located in the central area of ​​the bottom cover 60. The pairing design of the first connector 404 and the second connector 601 enables the guide column 40 to be accurately positioned during installation, achieving the alignment of the guide column 40 with the axis of the fan assembly 30, and reducing the probability of the guide column 40 being offset due to disassembly and reinstallation.

[0072] The first connector 404 and the second connector 601 can be threaded connection structures, snap-fit ​​connection structures, magnetic connection structures, or pin connection structures. This embodiment does not limit the specific form of the first connector 404 and the second connector 601.

[0073] In some embodiments, the second connector 601 is separable from the bottom cover 60, meaning the user can connect the second connector 601 to the first connector 404 (the second connector 601 can be located at the lower part of the bottom cover 60) and then install the bottom cover 60 onto the housing 10. This connection between the second connector 601 and the first connector 404 presses the bottom cover 60 and the housing 10 together, thus fixing the bottom cover 60 and the housing 10 relatively in place.

[0074] In the above embodiment, by connecting the second connector 601 with the first connector 404 to fix the bottom cover 60 relative to the housing 10, the guide column 40 can serve as a structure for fixing the bottom cover 60 on the one hand, and as a device for guiding air on the other hand, making the air handling equipment 100 compact in structure, and reducing noise while achieving structural stability of the guide column 40.

[0075] In some embodiments, such as Figure 2 As shown, the bottom cover 60 includes an assembly portion 602. The assembly portion 602 is recessed in a direction opposite to that of the fan assembly 30. A second connector 601 is disposed within the assembly portion 602, and a guide column 40 is inserted into the assembly portion 602 to connect the first connector 404 with the second connector 601.

[0076] The recessed structure of the mounting portion 602 of the bottom cover 60 allows the guide port 402 of the guide column 40 to extend to the upper surface of the bottom cover 60. Vertically, the guide port 402 can fully correspond to the filter assembly 20. Even airflow entering from the bottom of the filter cavity 201 of the filter assembly 20 can directly enter the guide cavity 403 through the bottom of the guide port 402, effectively utilizing airflow at various heights after filtration by the filter assembly 20 for pre-swirl treatment. This is particularly effective for improving the airflow at the bottom of the filter assembly 20, which has a relatively high height. Furthermore, placing the second connector 601 within the mounting portion 602 saves space in the vertical direction of the air handling equipment 100, resulting in a compact structure and miniaturization of the air handling equipment 100.

[0077] In some embodiments, the bottom cover 60 is detachably connected to the housing 10 via a threaded structure, and the first connector 404 and the second connector 601 are respectively configured as threads, and the bottom cover 60 can be detached from the housing 10 and the guide column 40 simultaneously.

[0078] The first connector 404 has a first thread, which can be located on the outer periphery of the bottom of the guide column 40. The second connector 601 has a second thread, which can be located on the inner wall of the assembly part 602. A third thread can be provided on the periphery of the bottom cover 60, and a fourth thread can be provided on the housing 10.

[0079] When the bottom cover 60 needs to be assembled, the user can rotate the bottom cover 60, and the two sets of threads will be tightened or loosened simultaneously to complete the separation or connection of the guide column 40 and the bottom cover 60, and the bottom cover 60 and the housing 10 at the same time. This not only ensures the positioning accuracy of the guide column 40, but also improves the assembly convenience between the bottom cover 60, the housing 10 and the guide column 40.

[0080] In some embodiments, such as Figure 8 As shown, the guide vane 401 is inclined relative to the axis of the fan assembly 30 so that the guide column 40 expands from the end away from the fan assembly 30 to the end closer to the fan assembly 30.

[0081] The inclined arrangement of the guide vane 401 causes the guide column 40 to gradually expand towards the fan assembly 30, and the space of the guide cavity 403 within the guide column 40 becomes larger as it gets closer to the fan assembly 30. Thus, during the upward flow of air, the increasing cross-section of the guide cavity 403 satisfies the outward diffusion trend of the airflow caused by centrifugal force, thereby maintaining the continuity of the airflow as it spirals upward within the guide column 40, suppressing the outward divergence of airflow based on centrifugal force, reducing interference that may occur between the airflow and the guide vane 401 during rotation, and ensuring the continuous transmission of the pre-swirl effect of the guide vane 401 on the airflow.

[0082] Furthermore, the gradient change in the space within the guide cavity 403 formed by the expansion trend of the guide vane 401 also causes the airflow to gradually reduce its rotational angular velocity during the upward process, forming a transition zone for airflow velocity buffering. This further alleviates the instantaneous impact when the high-speed airflow comes into contact with the blades 3011 of the fan assembly 30, achieving a smooth transition of the pre-swirling airflow into the fan assembly 30, and further reducing noise during the airflow process.

[0083] In some embodiments, the ventilation area of ​​the guide port 402 on the side closer to the fan assembly 30 is greater than the ventilation area on the side farther away from the fan assembly 30.

[0084] Because the guide vane 401 is inclined relative to the axis of the fan assembly 30, and combined with a horizontal cross section passing through the guide column 40, the air permeability area of ​​the guide port 402 gradually increases towards the fan assembly 30.

[0085] It is understandable that the ventilation area of ​​the guide port 402 near the bottom cover 60 is smaller than that near the fan assembly 30, which can enhance the negative pressure suction force on the airflow entering the filter cavity 201 from the bottom area of ​​the filter assembly 20. The gradually increasing ventilation area of ​​the guide port 402 towards the fan assembly 30 reduces the resistance of airflow entering the guide column 40, allowing as much airflow as possible from the filter assembly 20 into the guide cavity 403 of the guide column 40, thus improving the uniformity of airflow entering the guide column 40 along the height direction.

[0086] In some embodiments, such as Figure 8 As shown, the guide vane 401 has a first included angle θ1 relative to the axis, where 8°≤θ1≤75°.

[0087] When θ1 ≥ 8°, the guide vane 401 can enable the airflow to achieve sufficient pre-swirl acceleration while maintaining a suitable flow resistance. When θ1 ≤ 75°, the guide vane 401 can generate sufficient centrifugal force to maintain airflow rotation, and can also reduce airflow separation caused by excessive tilt angle of the guide vane 401.

[0088] In some embodiments, the end of the guide column 40 facing the fan assembly 30 is connected to the air inlet 302 of the fan assembly 30.

[0089] By connecting the end of the guide column 40 to the air inlet 302 of the fan, the airflow that has been pre-swirled through the guide column 40 can flow directly into the fan assembly 30, so that the pre-swirled airflow can maintain its angular momentum and directly input it into the impeller, thereby reducing the kinetic energy loss caused by the sudden change in airflow cross section due to the rotation of the airflow.

[0090] In some embodiments, the guide vane 401 may be made of an alloy material. The surface of the guide vane 401 may be anodized to form a micron-level roughness. In this way, the surface treatment of the guide vane 401 can both achieve the wall-attachment effect of airflow and disrupt the sound wave transmission path through the surface microstructure, thereby further improving the noise reduction effect.

[0091] In some embodiments, along the height direction of the air handling device 100, the length of the guide column 40 within the filter cavity 201 is L1, and the length of the filter assembly 20 is L2, wherein L1 / L2 ≥ 1 / 2. This proportional design allows the guide column 40 to cover most of the area passing through the filter assembly 20, enabling the airflow entering the filter cavity 201 from different heights to be effectively guided.

[0092] When L1 / L2≥1 / 2, the guide column 40 can extend sufficiently to the middle and lower part of the filter assembly 20. For the airflow entering from the bottom of the filter assembly 20, the guide column 40 can pre-swirl it in time to reduce the risk of turbulence caused by lack of guidance in the bottom airflow.

[0093] Specifically, the ratio of L1 / L2 can be 0.5, 0.6, 0.7, 0.8 or 1.

[0094] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An air handling device, characterized in that, include: Air inlet and air outlet; Filter assembly, including filter cavity; A fan assembly for drawing air from the air inlet toward the air outlet; A flow guide column, at least a portion of which is disposed in the filter cavity, the flow guide column includes flow guide plates, a plurality of flow guide plates surround a flow guide cavity, and a flow guide port is formed between adjacent flow guide plates, the flow guide port being connected to the flow guide cavity, the air inlet and the air outlet; In the cross-section of the air handling device, the multiple guide vanes do not extend radially along the air handling device, or the outlines of the multiple guide vanes form a varying angle with the radial direction, or the outlines of the multiple guide vanes form a preset angle with the radial direction.

2. The air handling equipment according to claim 1, characterized in that, The plurality of guide vanes are used to guide air movement in a first direction, the fan assembly includes a fan wheel, and when the air handling equipment is operating, the rotation direction of the fan wheel is at least partially the same as the first direction; and / or The wind turbine assembly includes a rotor with multiple blades. In a horizontally projected plane, the blades extend from the root to the tail of the blade along a first involute. The tail of the guide vane is located within the guide cavity, and the guide vane extends from the tail to the root of the guide vane along a second involute.

3. The air handling equipment according to claim 1, characterized in that, The air inlet of the fan assembly is provided with a ventilation grille that communicates with the air inlet and the air outlet, and the guide column is detachably installed on the ventilation grille.

4. The air handling equipment according to claim 3, characterized in that, The guide column is located in the central area of ​​the ventilation grille, and the outer diameter of the ventilation grille is larger than the outer diameter of the guide column at the end facing the fan assembly.

5. The air handling equipment according to claim 1, characterized in that, The air handling equipment also includes: The housing, wherein the air inlet and the air outlet are disposed on the housing; A bottom cover is disposed at the bottom of the housing, and the guide column is connected to the bottom cover at the end opposite to the fan assembly; and / or The bottom cover is detachably connected to the housing.

6. The air handling equipment according to claim 5, characterized in that, The end of the flow guide column extending toward the filter cavity is provided with a first connector, and the bottom cover is provided with a second connector. The first connector and the second connector are detachably connected, and the second connector is detachable from the bottom cover.

7. The air handling equipment according to claim 6, characterized in that, The bottom cover includes an assembly portion, which is recessed in a direction opposite to the fan assembly. A second connector is disposed within the assembly portion. The guide column is inserted into the assembly portion to connect the first connector and the second connector; and / or The bottom cover and the housing are detachably connected by a threaded structure. The first connector and the second connector are respectively constructed as threads. The bottom cover, the housing, and the guide column can be disassembled simultaneously.

8. The air handling apparatus according to any one of claims 1 to 7, characterized in that, The guide vane is inclined relative to the axis of the fan assembly, so that the guide column expands from the end away from the fan assembly to the end closer to the fan assembly.

9. The air handling equipment according to claim 8, characterized in that, The ventilation area of ​​the guide port on the side closer to the fan assembly is greater than the ventilation area on the side farther away from the fan assembly.

10. The air handling equipment according to claim 8, characterized in that, The guide vane has a first included angle θ1 relative to the axis of the fan assembly, wherein 8°≤θ1≤75°.

11. The air handling apparatus according to any one of claims 1 to 7, characterized in that, The end of the guide column facing the fan assembly is connected to the air inlet of the fan assembly.

12. The air handling apparatus according to any one of claims 1 to 7, characterized in that, Along the height direction of the air handling equipment, the length of the guide column located in the filter cavity is L1, and the length of the filter assembly is L2, wherein L1 / L2≥1 / 2.

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