Centrifugal fan for air purifier

Abstract

The utility model discloses a centrifugal fan for an air purifier, which comprises a fan main body, a motor, a support plate, blades and a bottom plate, the motor is positioned at the upper end of the support plate, and the blades are arranged in the middles of the support plate and the bottom plate; and the adjusting assembly is arranged at the upper end of the supporting plate, is connected with the blades and is used for adjusting the angle change of the blades, so that the outlet angles of the blades are increased, and the air outlet amount is further increased under the condition that the motor is not replaced.

Description

Technical Field

[0001] This utility model relates to the field of air purifier technology, and in particular to a centrifugal fan for use in air purifiers. Background Technology

[0002] Air purifiers are mainly used to remove particulate matter (PM2.5, pollen, etc.), gaseous pollutants (formaldehyde, odors), and microorganisms (bacteria, viruses) from the air. They achieve the purification effect by driving air circulation through a built-in fan and working with a filtration system. The centrifugal fan is an important component that drives the air circulation.

[0003] In existing air purifiers, the centrifugal fan speed is adjusted by changing the power frequency to change the airflow during operation. However, the maximum power of the motor remains unchanged, so the airflow cannot be further increased. Therefore, it is necessary to replace it with a high-power motor. Since the internal space of the centrifuge is limited, a high-power motor means a larger size, which makes it difficult to match and install it with the purifier. Utility Model Content

[0004] This invention provides a centrifugal fan for an air purifier, which can adjust the angle of the blades to increase the outlet angle of the blades, thereby further increasing the air volume without replacing the motor.

[0005] This utility model provides a centrifugal fan for an air purifier, comprising:

[0006] The fan body includes a motor, a support plate, blades, and a base plate. The motor is located at the upper end of the support plate, and the blades are disposed in the middle of the support plate and the base plate.

[0007] An adjustment component, located at the upper end of the support plate and connected to the blades, is used to adjust the angle of the blades, thereby increasing the outlet angle of the blades and further improving the air volume without replacing the motor.

[0008] In a centrifugal fan for an air purifier according to an embodiment of the present invention, the adjustment assembly includes a first support shaft and a second support shaft extending from the upper and lower ends of the blades. A driven gear is sleeved on the outer side of the first support shaft, and a driving gear ring is meshed on the outer side of the driven gear. A rotating support frame and a traction column are connected to the upper end of the support plate, and an electric telescopic rod is provided between the traction column and the driving gear ring.

[0009] In a centrifugal fan for an air purifier according to one embodiment of the present invention, a rotating groove adapted to the rotating support frame is provided in the middle of the drive gear ring.

[0010] In a centrifugal fan for an air purifier according to an embodiment of the present invention, the upper ends of the support plate and the base plate are provided with through holes that are adapted to the first support shaft and the second support shaft, for placing the first support shaft and the second support shaft, so as to facilitate the rotational support of the two.

[0011] In a centrifugal fan for an air purifier according to one embodiment of the present invention, the two ends of the electric telescopic rod are respectively connected to a connecting seat and a movable seat, and the connecting seat and the traction column form a movable connection. An auxiliary ear plate is fixedly connected to the inner side of the driving gear ring, and a movable shaft is connected between the auxiliary ear plate and the movable seat.

[0012] The centrifugal fan for an air purifier according to one embodiment of the present invention further includes:

[0013] The air purifier includes a housing for mounting the fan body, a control panel mounted on the outside of the housing, an air outlet and an air inlet located on the outside of the housing.

[0014] In a centrifugal fan for an air purifier according to one embodiment of the present invention, a filter element is placed inside the outer shell, and the filter element has a hollow cylindrical structure, with the opening of the filter element located directly below the fan body.

[0015] In a centrifugal fan for an air purifier according to one embodiment of the present invention, the inner surface of the outer shell is provided with a mounting groove that is nested with the filter element, and the mounting groove is connected to the air inlet screen.

[0016] In a centrifugal fan for an air purifier according to one embodiment of the present invention, a top cover for sealing is installed on the top of the outer shell, and a mounting hole adapted to the motor is opened in the middle of the top cover, and a sealing ring is provided between the mounting hole and the motor.

[0017] The technical solution provided in this application embodiment may include the following beneficial effects: This application designs a centrifugal fan for an air purifier. Since an adjustment component is set between the support plate and the blades, the blades can be driven to rotate, thereby increasing the outlet angle of the blades and further improving the air volume without replacing the high-power motor.

[0018] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a centrifugal fan for an air purifier provided in one embodiment of this application;

[0021] Figure 2 yes Figure 1 A partial schematic diagram of the centrifugal fan in an air purifier;

[0022] Figure 3 yes Figure 1 A schematic diagram of the blade structure in the image;

[0023] Figure 4 yes Figure 1 A schematic diagram showing the partial disassembly and assembly of the air purifier;

[0024] Figure 5 yes Figure 1 A partial side-section diagram of the unit combined with the air purifier;

[0025] Figure 6 yes Figure 5 Enlarged view of point A in the middle;

[0026] Figure 7 yes Figure 1 A partial schematic diagram of the adjustment component. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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 of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0030] like Figures 1 to 7 As shown, this application provides a centrifugal fan for an air purifier, including: a fan body 100 and an adjustment assembly 50, including a motor 10, a support plate 20, blades 30 and a base plate 40. The motor 10 is located at the upper end of the support plate 20, and the blades 30 are disposed in the middle of the support plate 20 and the base plate 40. The blades 30 are disposed at the upper end of the support plate 20 and connected to the blades 30, and are used to adjust the angle of the blades 30, thereby increasing the outlet angle of the blades 30, and further increasing the air volume without replacing the motor 10.

[0031] After adopting the above technical solution, since the blade 30 is located between the support plate 20 and the base plate 40, the angle of the blade 30 can be changed by adjusting the component 50, thereby adjusting the exit angle. The opening and closing angle of the blade 30 is from 0° to 90°. Therefore, the extension and retraction length of the output end of the electric telescopic rod 59 can be rotated through the driving gear ring 54, the driven gear 53 and the first support shaft 51, which can further drive the blade 30 to rotate from 0° to 90°.

[0032] For example, since the adjustment assembly 50 includes a first support shaft 51 and a second support shaft 52 extending from the upper and lower ends of the blade 30, a driven gear 53 is sleeved on the outer side of the first support shaft 51, and a driving gear ring 54 is meshed on the outer side of the driven gear 53. A rotating support frame 56 and a traction column 58 are connected to the upper end of the support plate 20. An electric telescopic rod 59 is provided between the traction column 58 and the driving gear ring 54, which can facilitate the meshing of the driving gear ring 54 with multiple sets of driven gears 53. During the rotation of the driving gear ring 54, multiple sets of driven gears 53 can be driven to rotate, which can further drive the first support shaft 51 to rotate. Under the connection between the second support shaft 52 and the through hole, the first support shaft 51 drives the blade 30 to rotate.

[0033] In an optional embodiment, the center of the drive gear ring 54 is provided with a rotating groove 55 that is adapted to the rotating support frame 56. The rotating groove 55 is annular and has a "T" shaped side profile, which facilitates the connection between the rotating support frame 56 and the two rotating and sliding.

[0034] In an optional embodiment, the upper ends of both the support plate 20 and the base plate 40 are provided with through holes that are adapted to the first support shaft 51 and the second support shaft 52, for placing the first support shaft 51 and the second support shaft 52, so as to facilitate the rotational support of the two.

[0035] For example, since the two ends of the electric telescopic rod 59 are respectively connected to the connecting seat 510 and the movable seat 511, and the connecting seat 510 and the traction column 58 form a movable connection, the inner side of the drive gear ring 54 is fixedly connected to the auxiliary ear plate 57, and the auxiliary ear plate 57 and the movable seat 511 are connected to the movable shaft 512.

[0036] It should be noted that during the extension and retraction of the electric telescopic rod 59, the connecting seat 510 can be rotated along the outside of the traction column 58, and the movable seat 511 can be rotated along the outside of the auxiliary ear plate 57 under the support of the movable shaft 512. This, in turn, drives the driving gear ring 54 to rotate along the outside of the driven gear 53, thereby driving the first support shaft 51 and the blade 30 to rotate, thus changing the angle of the blade 30.

[0037] In an optional embodiment, the centrifugal fan further includes a purifier 200, comprising a housing 201 for mounting the fan body 100, a control panel 202 mounted on the outside of the housing 201, an air outlet 203 and an air inlet screen 205 opened on the outside of the housing 201, wherein a filter element 206 is placed inside the housing 201, and the filter element 206 has a hollow cylindrical structure, with the opening of the filter element 206 located directly below the fan body 100 to facilitate air filtration. Air can be drawn into the filter element 206 through the air inlet screen 205 for filtration, and then the filtered air is discharged through the air outlet 203 by the fan body 100, thereby completing air purification.

[0038] In an optional embodiment, the housing 201 has an internal mounting groove that is nested with the filter element 206, and the mounting groove is connected to the air inlet mesh 205. The top of the housing 201 is fitted with a top cover 207 that serves as a seal, and the top cover 207 has a mounting hole in the middle that is compatible with the motor 10. A sealing ring is provided between the mounting hole and the motor 10 to facilitate the sealed installation of the top cover 207 and the motor 10.

[0039] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. 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, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0040] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] The foregoing disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described above. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0042] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A centrifugal fan for an air cleaner, characterized by, Include: Fan body, including motor, support plate, blade and bottom plate, the motor is located in the upper end of the support plate, the blade is arranged in the middle part of the support plate and the bottom plate; Adjusting assembly is arranged at the upper end of the support plate, and is connected with the blade, for adjusting the angle change of the blade, thereby increasing the outlet angle of the blade, further improving the air volume without replacing the motor; The adjusting assembly comprises first support shaft and second support shaft extending from upper and lower ends of the blade, the outer side of the first support shaft is sleeved with a driven gear, and the outer side of the driven gear is engaged with a driving gear ring, the upper end of the support plate is connected with a rotating support frame and a traction column, and an electric telescopic rod is arranged between the traction column and the driving gear ring.

2. The centrifugal fan for an air cleaner according to claim 1, wherein The middle part of the driving gear ring is provided with a rotating groove matched with the rotating support frame.

3. The centrifugal fan for an air cleaner according to claim 1, wherein The upper end of the support plate and the bottom plate is provided with a through hole matched with the first support shaft and the second support shaft, for placing the first support shaft and the second support shaft, facilitating the rotation support of the two.

4. The centrifugal fan for an air cleaner according to claim 1, wherein The two ends of the electric telescopic rod are respectively connected with a connecting seat and a movable seat, and the connecting seat and the traction column are movably connected, the inner side of the driving gear ring is fixedly connected with an auxiliary ear plate, and the auxiliary ear plate and the movable seat are connected with a movable shaft.

5. The centrifugal fan for an air cleaner according to claim 1, wherein Also include: Purifier, including a housing for installing the fan body, a control panel mounted on the outside of the housing, an air outlet and an air inlet net opened on the outside of the housing.

6. The centrifugal fan for an air cleaner according to claim 5, wherein The inside of the shell is placed with a filter element, and the filter element is a hollow cylindrical structure, and the opening of the filter element is located directly below the fan body.

7. The centrifugal fan for an air cleaner according to claim 6, wherein The inside of the shell is provided with an installation groove nested with the filter element, and the installation groove is communicated with the air inlet net.

8. The centrifugal fan for an air cleaner according to claim 7, characterized by, The top of the shell is provided with a top cover for sealing, and the middle part of the top cover is provided with a mounting hole matched with the motor, and a sealing ring is arranged between the mounting hole and the motor.

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