An air purifier

Abstract

This application relates to the field of household appliance technology, specifically to an air purifier, comprising: a housing and at least two independent air duct units; each air duct unit includes an air duct, a filter assembly, and a fan; the air duct has a first air inlet and a first air outlet; the fan includes a motor and a fan wheel; the air outlet direction of the air duct is parallel to the axis of the fan wheel, and the air inlet direction of the air duct is perpendicular to the axis of the fan wheel. The air duct units of this air purifier are independent of each other, thereby isolating the airflow paths of each air duct unit and avoiding crosstalk between the airflow paths of the air duct units inside the housing; furthermore, the air inlet and outlet directions of the air duct form a 90° turn, which physically isolates the air inlet area and the air outlet area of ​​the air purifier in terms of spatial airflow, making it difficult for the purified air to be directly drawn in by the first air inlet, thereby further avoiding crosstalk between the airflow paths of the air ducts.

Description

Technical Field

[0001] This application relates to the field of household appliance technology, specifically to an air purifier. Background Technology

[0002] As people's living standards improve, air purifiers have gradually become common household appliances. Users are placing higher demands on the purification performance of air purifiers, such as rapid removal of formaldehyde and handling pollution in large spaces. Therefore, air purifiers need to have a high clean air output rate (CADR) to meet these needs.

[0003] In existing technologies, air purifiers typically increase total airflow and purification capacity by incorporating multiple parallel air ducts and fans. However, this can lead to crosstalk between airflow paths within each duct, resulting in overall air pressure loss and lower purification efficiency. Utility Model Content

[0004] This application provides an air purifier, including: case; At least two independent air duct units, both located within the housing, and each air duct unit comprising: The air duct has a first air inlet and a first air outlet, and both the first air inlet and the first air outlet face the side wall of the housing. A filter assembly is disposed within the air duct; The fan includes a motor and a fan wheel, both of which are disposed within the air duct and located between the filter assembly and the first air outlet. The air outlet direction of the air duct is parallel to the axis of the wind turbine, and the air inlet direction of the air duct is perpendicular to the axis of the wind turbine.

[0005] In some embodiments, the at least two air duct units are stacked along the height direction of the housing.

[0006] In some embodiments, there are two first air inlets, which are located on opposite sides along the axial direction of the impeller.

[0007] In some embodiments, the filtering component includes: A filter cartridge, wherein the filter cartridge is arranged parallel to the axial direction of the impeller; The first air inlet is opposite to a portion of the periphery of the filter cylinder. After air enters the air duct from the first air inlet, it passes through the peripheral wall of the filter cylinder radially and enters the inner cavity of the filter cylinder, and flows towards the impeller axially along the filter cylinder.

[0008] In some embodiments, the radial cross-section of the filter cartridge is circular, square, or polygonal.

[0009] In some embodiments, a hatch is pivotally disposed on the housing, and the hatch is located at the end of the filter cartridge opposite to the wind turbine.

[0010] In some embodiments, a first air outlet grille communicating with the first air outlet is provided on the side wall of the housing, and the filter assembly further includes: A filter plate, which covers the outside of the first air outlet grille.

[0011] In some embodiments, the fan further includes: A vortex shell is disposed around the outer periphery of the impeller, and the vortex shell has a second air inlet and a second air outlet. The second air inlet is connected to the axial end of the filter cylinder, and the second air outlet is connected to the first air outlet. Along the air outlet direction, the radial cross-section of the vortex shell gradually transitions from a circle to a square.

[0012] In some embodiments, a second air outlet grille communicating with the first air outlet is provided on the side wall of the housing, and the air duct unit further includes an air guide disposed outside the second air outlet grille, the air guide comprising: The cover plate is positioned opposite to the second air outlet grille; A first side plate and a second side plate connecting the second air outlet grille and the cover plate; The cover plate, the first side plate, and the second side plate form a flow guide cavity, through which the air flowing out from the second air outlet grille flows out.

[0013] In some embodiments, the air purifier further includes: A control unit is electrically connected to the motor in each of the air duct units to control the fan of each air duct unit to work independently.

[0014] The technical solution provided in this application can achieve the following beneficial effects: The air purifier provided in this application embodiment has independent air duct units, thereby isolating the airflow paths of each air duct unit and avoiding crosstalk between the airflow paths of the air duct units inside the housing, ensuring the operational reliability of each air duct unit. Furthermore, the air inlet and outlet directions of the air ducts form a 90° turn, physically isolating the air inlet and outlet areas of the air purifier in terms of spatial airflow. This makes it difficult for purified air to be directly drawn into the first air inlet, further avoiding crosstalk between the airflow paths of each air duct, reducing air pressure loss, and improving the purification efficiency of the air purifier. Attached Figure Description

[0015] Figure 1 A schematic diagram of the structure of an air purifier according to an exemplary embodiment of this application is shown; Figure 2 A longitudinal sectional view of an air purifier according to an exemplary embodiment of this application is shown; Figure 3 A partial longitudinal sectional view of an air purifier according to an exemplary embodiment of this application is shown; Figure 4 A partial structural diagram of an air purifier according to an exemplary embodiment of this application is shown, intended to illustrate the vortex housing; Figure 5 A longitudinal sectional view of an air purifier according to another exemplary embodiment of this application is shown; Figure 6 A schematic diagram of an air purifier, representing yet another exemplary embodiment of this application, is shown to illustrate an air guide component. Figure 7 A partial longitudinal sectional view of an air purifier according to yet another exemplary embodiment of this application is shown.

[0016] Explanation of reference numerals in the attached figures: 100 - Hull; 101 - Hatch door; 200-Air duct unit; 201 - Air duct; 2011 - First air inlet; 2012 - First air outlet; 202-Air guide component; 2021-Cover plate; 2022-First side plate; 2023-Second side plate; 2024-Air guide cavity; 2025-Air guide plate; 300 - Filter assembly; 301 - Filter cartridge; 302a - First air outlet grille; 302b - Second air outlet grille; 303 - Filter plate; 400-Fan; 401-Motor; 402-Wind impeller; 403-Vortex casing; 4031-Second air inlet; 4032-Second air outlet. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in 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 in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of this application.

[0018] It should be noted that many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0019] In the description of this application, it should be understood that the terms "upper," "lower," "horizontal," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In this application, unless otherwise expressly specified and limited, the first feature being "upper" or "lower" than the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium.

[0020] In this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two entities at the point of connection are not connected through a transitional structure, but are simply linked together to form a whole. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0021] In this application, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0022] As people's living standards improve, air purifiers have gradually become common household appliances. Users are placing higher demands on the purification performance of air purifiers, such as rapid removal of formaldehyde and handling pollution in large spaces. Therefore, air purifiers need to have a high clean air output rate (CADR) to meet these needs.

[0023] In existing technologies, air purifiers typically increase total airflow and purification capacity by incorporating multiple parallel air ducts and fans. However, due to the limited internal space of air purifiers, the air inlets and outlets of multiple fans are often close together, making crosstalk between the airflow paths of each duct easy. This inevitably leads to overall air pressure loss, resulting in lower purification efficiency.

[0024] To address the aforementioned technical problems, this application provides an air purifier. (Refer to...) Figures 1 to 3 The air purifier includes a housing. The outer contour of the housing can be square or cylindrical; this application does not impose specific limitations on this, and the shape can be designed according to the appearance requirements of the air purifier.

[0025] Reference Figure 1 and Figure 2 In some examples, the air purifier may also include at least two independent air duct units 200, both of which are located within the housing 100. It is understood that the air duct units 200 are independent of each other, thereby isolating the airflow paths of each air duct unit 200 and preventing crosstalk between the airflow paths of the air duct units 200 within the housing 100, thus ensuring the operational reliability of each air duct unit 200.

[0026] It should be noted that the number of air duct units 200 can be two, three, four, or even more; this application does not impose a specific limitation. The number of air duct units 200 should be set according to the internal structure and purification efficiency requirements of the air purifier to ensure that the purification requirements are met.

[0027] In some examples (not shown in the figure), the number of air duct units 200 can be two, which is suitable for use environments such as small and medium-sized apartments where noise control requirements are relatively high and purification efficiency requirements are relatively low.

[0028] Reference Figure 1 and Figure 2 In some examples, the number of air duct units 200 can be three, which is suitable for use environments with relatively low requirements for noise control and relatively high requirements for purification efficiency.

[0029] Reference Figures 1 to 3 In some examples, each air duct unit 200 may include an air duct 201 to form a flow channel for airflow within the housing 100. The air duct 201 has a first air inlet 2011 and a first air outlet 2012, both of which face the sidewall of the housing 100. It is understood that the sidewall area of ​​the housing 100 is relatively large; by having both the first air inlet 2011 and the first air outlet 2012 facing the sidewall of the housing 100, the ventilation area of ​​the air purifier is increased, thereby improving air purification efficiency.

[0030] Reference Figures 1 to 3In some examples, each duct unit 200 may also include a filter assembly 300. The filter assembly 300 is disposed within the duct 201. It is understood that the filter assembly 300 can remove particulate matter and gaseous pollutants (such as formaldehyde) from the air. In addition, the placement of the filter assembly 300 within the duct 201 facilitates full utilization of the space inside the duct 201, improving the overall compactness of the air purifier's structure.

[0031] Reference Figures 1 to 3 In some examples, each duct unit 200 may also include a fan 400. The fan 400 includes a motor 401 and a rotor 402 driven by the motor 401. The motor 401 drives the rotor 402 to rotate, generating airflow. Both the motor 401 and the rotor 402 are disposed within the duct 201 and located between the filter assembly 300 and the first air outlet 2012. The air outlet direction of the duct 201 (see...) Figure 2 (As indicated by the middle arrow b) is parallel to the axis of the wind turbine 402, and the air inlet direction of the air duct 201 (see...) Figure 2 (As shown by arrow a) is perpendicular to the axis of wind turbine 402.

[0032] Understandably, the air inlet and outlet directions of the air duct 201 are turned at 90°, which can physically isolate the air inlet and outlet areas of the air purifier in terms of spatial flow. This makes it difficult for the purified air to be directly drawn into the first air inlet 2011, thereby further avoiding crosstalk between the airflow paths of each air duct 201, reducing wind pressure loss, and improving the purification efficiency of the air purifier.

[0033] Reference Figure 1 and Figure 2 In some embodiments, at least two air duct units 200 may be stacked along the height direction of the housing 100. It is understood that stacking multiple air duct units 200 along the height direction of the housing 100 can save overall lateral space in the air purifier. Thus, the air purifier can improve its purification performance by increasing the number of air duct units 200 while maintaining a small footprint.

[0034] Reference Figure 1 and Figure 2 In some examples, the three duct units 200 can be stacked along the height of the housing 100, suitable for vertical installation spaces.

[0035] In other embodiments (not shown in the figures), two air duct units 200 may be stacked along the width of the housing 100, suitable for horizontal installation spaces.

[0036] In other embodiments (not shown in the figures), the number of air duct units 200 can be set to four as needed. The four air duct units 200 can be stacked along the height direction of the housing 100 or stacked along the width direction of the housing 100. Preferably, the four air duct units 200 can be divided into two groups, with two air duct units 200 in each group stacked along the height direction of the housing 100 to form two columns. These two columns are then arranged side-by-side along the width direction of the housing 100 to form a two-row, two-column grid structure. This approach comprehensively considers both the height and width directions, avoiding excessive size in any single direction.

[0037] Reference Figure 2 and Figure 3 In some embodiments, two first air inlets 2011 may be provided, with the two first air inlets 2011 located on opposite sides along the axial direction of the impeller 402. This arrangement of two first air inlets 2011 increases the air intake volume, thereby improving the purification efficiency of the air purifier; simultaneously, air can be drawn in from opposite sides along the axial direction of the impeller 402, which helps to balance the airflow pressure on both sides of the impeller 402 and improves the operational stability of the impeller 402.

[0038] It is understood that the housing 100 has air inlet surfaces corresponding to the two first air inlets 2011, so as to allow external airflow to enter the interior of the housing 100 through the air inlet surfaces.

[0039] Reference Figure 1 and Figure 3 In some examples, the outer contour of the housing 100 is square. Air inlet surfaces are respectively provided on the two side walls of the housing 100 corresponding to the two first air inlets 2011, enabling bidirectional air intake and thus improving the air volume and uniformity of the air purifier.

[0040] Reference Figure 1 and Figure 3 In some embodiments, the filter assembly 300 may include a filter cartridge 301. The filter cartridge 301 is arranged axially parallel to the impeller 402. A first air inlet 2011 is partially opposite to the periphery of the filter cartridge 301. After air enters the air duct 201 through the first air inlet 2011, it passes radially through the peripheral wall of the filter cartridge 301 into the inner cavity of the filter cartridge 301, and flows axially towards the impeller 402.

[0041] It is understandable that the airflow passes radially through the peripheral wall of the filter cylinder 301, uses the annular surface area of ​​the filter cylinder 301 for airflow filtration, and turns into axial flow in the inner cavity of the filter cylinder 301, so as to achieve a smooth transition of the airflow direction from the lateral air intake direction to the axial flow direction.

[0042] It should be noted that a portion of the periphery of the filter cartridge 301 is opposite to the first air inlet 2011. A portion of the outer peripheral wall of the filter cartridge 301 is close to or fixed to the inner wall of the air duct 201 to achieve stable installation of the filter cartridge 301.

[0043] Reference Figure 1 and Figure 3 In some embodiments, the radial cross-section of the filter cartridge 301 can be circular, square, or polygonal.

[0044] It should be noted that this application does not impose specific limitations on the shape of the radial cross-section of the filter cartridge 301. Based on the structural configuration of the air duct 201, as long as it is ensured that the air entering the air duct 201 can radially penetrate the peripheral wall of the filter cartridge 301 to achieve air filtration, it is acceptable. In some examples, the radial cross-section of the filter cartridge 301 is circular to reduce airflow resistance and improve the filtration efficiency of the filter cartridge 301.

[0045] Reference Figure 1 In some embodiments, a hatch 101 may be pivotally provided on the housing 100, and the hatch 101 is located at the end of the filter cartridge 301 away from the impeller 402.

[0046] Understandably, by opening the door 101, the filter cartridge 301 can be axially removed or installed from the air duct 201, facilitating the maintenance or replacement of the filter assembly 300; at the same time, after the air duct 201 is removed, it is convenient to clean the two first air inlets 2011, thereby ensuring the air intake reliability of the air purifier.

[0047] It should be noted that the hatch 101 and the shell 100 can be pivotally connected by means of hinges, buckles or slide rails, etc. This application does not make specific restrictions on this, and all of them are within the protection scope of this application.

[0048] Reference Figure 3 and Figure 4 In some embodiments, the fan 400 may further include a vortex housing 403. The vortex housing 403 surrounds the outer periphery of the impeller 402 and has a second air inlet 4031 and a second air outlet 4032. The second air inlet 4031 communicates with the axial end of the filter cartridge 301, and the second air outlet 4032 communicates with the first air outlet 2012. It is understood that the vortex housing 403 can guide and pressurize the airflow exiting the filter cartridge 301, thereby improving the purification efficiency of the air purifier.

[0049] Reference Figure 3 and Figure 4In some examples, the radial cross-section of the vortex housing 403 gradually transitions from a circle to a square along the air outlet direction. This facilitates the adaptation of the vortex housing 403 to the axial end of the filter cartridge 301 and the shape of the first air outlet 2012, reducing eddies or turbulence generated at the connection between the vortex housing 403 and the filter cartridge 301, thereby reducing pressure loss caused by airflow deformation and improving the purification efficiency of the air purifier.

[0050] Reference Figure 1 and Figure 5 In some embodiments, a first air outlet grille 302a communicating with the first air outlet 2012 is provided on the side wall of the housing 100, and the filter assembly 300 may further include a filter plate 303. The filter plate 303 covers the outside of the first air outlet grille 302a.

[0051] It is understandable that the filter plate 303 can filter the airflow at the first air outlet grille 302a, thereby improving the filtration effect of the air purifier.

[0052] It should be noted that the filter plate 303 can be a mesh structure or a plate filter element. This application does not impose specific limitations on this, and both fall within the scope of protection of this application. In some examples, the filter plate 303 is a plate filter element, so as to facilitate its assembly onto the housing 100 and to facilitate the maintenance and disassembly of the filter plate 303.

[0053] Reference Figure 1 , Figure 6 and Figure 7 In some embodiments, a second air outlet grille 302b communicating with the first air outlet 2012 may be provided on the side wall of the housing 100. The air duct unit 200 may also include an air guide 202 disposed outside the second air outlet grille 302b. The air guide 202 may include a cover plate 2021, a first side plate 2022, and a second side plate 2023. The cover plate 2021 is disposed opposite to the second air outlet grille 302b. The first side plate 2022 and the second side plate 2023 are both connected between the second air outlet grille 302b and the cover plate 2021. The cover plate 2021, the first side plate 2022, and the second side plate 2023 form a guide cavity 2024, through which air flowing out from the second air outlet grille 302b flows out.

[0054] Understandably, the airflow guide cavity 2024 can converge and guide the airflow from the second air outlet grille 302b, making it more concentrated in a preset direction, improving the air delivery distance and directionality, and enhancing the user experience; at the same time, by guiding the airflow from the second air outlet grille 302b through the airflow guide cavity 2024, the airflow noise of the air purifier is reduced.

[0055] It should be noted that the first air vent grille 302a and the second air vent grille 302b mentioned in this application can be the same structure or different structures with the same function.

[0056] Reference Figure 1 , Figure 6 and Figure 7 In some examples, a guide plate 2025 can be installed in the airflow guiding cavity 2024. The two ends of the guide plate 2025 are connected to the second air outlet grille 302b and the cover plate 2021, respectively. The cross-sectional length of the guide plate 2025 gradually increases along the height direction of the housing 100, i.e., the guide plate 2025 is a conical plate. Thus, the guide plate 2025 further guides the airflow path within the airflow guiding cavity 2024, reducing eddies or turbulence generated at the junction of the vortex shell 403 and the vortex shell 403, thereby reducing pressure loss due to airflow deformation and improving the purification efficiency of the air purifier.

[0057] Reference Figure 1 In some embodiments, the air purifier may also include a control unit. The control unit is electrically connected to the motor 401 in each air duct unit 200 to control the fan 400 of each air duct unit 200 to operate independently.

[0058] Understandably, by adjusting the coordinated or independent operation of multiple air duct units 200, the airflow of the air purifier can be flexibly controlled to meet different user needs. Specifically, when a smaller number (e.g., one) of the air duct units 200 are in operation, the air purifier produces less noise, meeting the user's low-noise requirement; when a larger number (e.g., two or three) of the air duct units 200 are in operation, the air purifier has higher purification efficiency, meeting the user's high purification efficiency requirement.

[0059] It should be noted that the control unit can be a separate circuit board or a software module integrated into the main control chip, and such control unit is well known to those skilled in the art. This application does not impose specific restrictions on the configuration of the control unit, as long as it can achieve independent start-stop or speed control of each of the 400 fan units.

[0060] The above detailed embodiments further illustrate the purpose, technical solution, and beneficial effects of the embodiments of this application. It should be understood that the above are merely specific embodiments of the embodiments of this application and are not intended to limit the protection scope of the embodiments of this application. Any modifications, equivalent substitutions, improvements, etc., made on the basis of the technical solutions of the embodiments of this application should be included within the protection scope of the embodiments of this application.

Claims

1. An air purifier, characterized in that, include: case; At least two independent air duct units, both located within the housing, and each air duct unit comprising: The air duct has a first air inlet and a first air outlet, and both the first air inlet and the first air outlet face the side wall of the housing. A filter assembly is disposed within the air duct; The fan includes a motor and a fan wheel, both of which are disposed within the air duct and located between the filter assembly and the first air outlet. The air outlet direction of the air duct is parallel to the axis of the wind turbine, and the air inlet direction of the air duct is perpendicular to the axis of the wind turbine.

2. The air purifier according to claim 1, characterized in that, The at least two air duct units are stacked along the height direction of the housing.

3. The air purifier according to claim 1, characterized in that, There are two first air inlets, which are located on opposite sides along the axis of the wind turbine.

4. The air purifier according to any one of claims 1 to 3, characterized in that, The filtering component includes: A filter cartridge, wherein the filter cartridge is arranged parallel to the axial direction of the impeller; The first air inlet is opposite to a portion of the periphery of the filter cylinder. After air enters the air duct from the first air inlet, it passes through the peripheral wall of the filter cylinder radially and enters the inner cavity of the filter cylinder, and flows towards the impeller axially along the filter cylinder.

5. The air purifier according to claim 4, characterized in that, The radial cross-section of the filter cartridge is circular, square, or polygonal.

6. The air purifier according to claim 4, characterized in that, A hatch is pivotally mounted on the housing and is located at the end of the filter cartridge opposite to the wind turbine.

7. The air purifier according to claim 1, characterized in that, The side wall of the housing is provided with a first air outlet grille communicating with the first air outlet, and the filter assembly further includes: A filter plate, which covers the outside of the first air outlet grille.

8. The air purifier according to claim 4, characterized in that, The fan also includes: A vortex shell is disposed around the outer periphery of the impeller, and the vortex shell has a second air inlet and a second air outlet. The second air inlet is connected to the axial end of the filter cylinder, and the second air outlet is connected to the first air outlet. Along the air outlet direction, the radial cross-section of the vortex shell gradually transitions from a circle to a square.

9. The air purifier according to any one of claims 1 to 8, characterized in that, The side wall of the housing is provided with a second air outlet grille that communicates with the first air outlet. The air duct unit further includes an air guide component disposed outside the second air outlet grille. The air guide component includes: The cover plate is positioned opposite to the second air outlet grille; A first side plate and a second side plate connecting the second air outlet grille and the cover plate; The cover plate, the first side plate, and the second side plate form a flow guide cavity, through which air flowing out from the second air outlet grille flows out.

10. The air purifier according to any one of claims 1 to 8, characterized in that, The air purifier also includes: A control unit is electrically connected to the motor in each of the air duct units to control the fan of each air duct unit to work independently.

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