Axial flow centrifugal fan blade device and fan

Abstract

The application provides an axial flow centrifugal fan blade device and a fan. The axial flow centrifugal fan blade device is arranged on a mounting body with a driving assembly, the mounting body is provided with an air inlet, an air outlet communicated with the air inlet, and an air duct for communicating the air inlet and the air outlet, the driving assembly is arranged on the air duct, and the axial flow centrifugal fan blade device comprises: an axial flow centrifugal fan blade assembly arranged in the air duct and connected with the driving assembly; and a filter assembly arranged coaxially with the axial flow centrifugal fan blade assembly at the air inlet. The axial flow centrifugal fan blade device combines a traditional axial flow fan blade and a centrifugal fan blade to form a single part, the filter screen is arranged in the centrifugal fan blade, air diffuses to the axial flow fan blade from both sides after entering the centrifugal fan blade, and the pressure is increased, so that the purification function of the device is realized, the problem of small air volume during installation of the filter screen is solved, and the resistance performance of the product is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the fan technical field, and particularly relates to an axial centrifugal fan blade device and a fan. BACKGROUND

[0002] With the improvement of living quality, people pay more and more attention to health, and the demand for air quality is also increasing. The demand for fans with filtering effect is increasing. Because the fan with filter can filter dust, lint and other impurities in the air in advance when blowing, so as to send clean and healthy wind, which is deeply loved by consumers. However, the use of filter will affect the air volume of the fan due to the low air permeability of the filter, resulting in the increase of the input air pressure and the decrease of the output air volume.

[0003] Therefore, in order to meet the purification function of the filter and the output air volume when the filter is installed, the present application provides a new type of axial centrifugal fan blade device and fan to solve the problems of the increase of the input air pressure and the decrease of the output air volume. SUMMARY

[0004] In order to solve the above problems, the present application provides an axial centrifugal fan blade device and fan, which can realize the purification function of the filter and solve the problem of small air volume when the filter is installed, and improve the performance of the product.

[0005] The axial centrifugal fan blade device provided by the present application is arranged on a mounting body with a driving assembly, the mounting body is provided with an air inlet, an air outlet communicated with the air inlet, and an air duct for communicating the air inlet and the air outlet, and the driving assembly is arranged on the air duct, and the axial centrifugal fan blade device comprises:

[0006] An axial centrifugal fan blade assembly is arranged in the air duct and connected with the driving assembly.

[0007] A filter assembly is arranged at the air inlet and coaxially arranged with the axial centrifugal fan blade assembly.

[0008] In one embodiment, the axial centrifugal fan blade assembly comprises a centrifugal fan blade, and the centrifugal fan blade is provided with an axial fan blade along the axial extension direction of one end thereof.

[0009] In one embodiment, the centrifugal fan blade is integrally connected with the axial fan blade.

[0010] In one embodiment, the filter assembly comprises an air inlet cylinder, and the filter screen is mounted on the air inlet cylinder.

[0011] In one embodiment, the filter screen is coaxial with the centrifugal fan blade and is arranged separately.

[0012] In one embodiment, the diameter of the filter screen is smaller than the diameter of the centrifugal fan blade.

[0013] In one embodiment, the filter screen is arranged in the centrifugal fan blade.

[0014] In one embodiment, a support for mounting the driving assembly is arranged on the mounting body, and a mounting hole is arranged on the support.

[0015] In one embodiment, the driving assembly comprises a motor, a motor shaft is arranged on the motor, and the motor shaft penetrates the mounting hole and is connected with the axial centrifugal fan blade assembly.

[0016] In one embodiment, a knob for fixing the axial centrifugal fan blade is further arranged, and the knob is mounted on the end of the motor shaft.

[0017] In one embodiment, a first screen is mounted on the air inlet, and a second screen is mounted on the air outlet.

[0018] The application further provides a fan comprising the above axial centrifugal fan blade device.

[0019] Compared with the prior art, the application has the following beneficial effects:

[0020] The axial centrifugal fan blade device comprises a mounting body provided with a driving assembly, an air inlet, an air outlet communicated with the air inlet, and an air duct for communicating the air inlet and the air outlet, and the driving assembly is arranged on the air duct and comprises an axial centrifugal fan blade assembly arranged in the air duct and connected with the driving assembly, and a filter assembly arranged at the air inlet and coaxially arranged with the axial centrifugal fan blade assembly. BRIEF DESCRIPTION OF DRAWINGS

[0021] The application will be described in more detail below based on the embodiments and with reference to the drawings.

[0022] Figure 1 is an exploded view of the axial centrifugal fan blade device;

[0023] Figure 2 is a sectional view of the axial centrifugal fan blade device;

[0024] Figure 3 is a structural schematic view of the mounting body;

[0025] Figure 4 This is a schematic diagram of the structure of the axial flow centrifugal fan assembly described in this invention;

[0026] Figure 5 This is a schematic diagram of the air inlet duct described in this invention;

[0027] Figure 6 This is a schematic diagram of the structure of the air inlet duct and filter screen described in this invention.

[0028] In the above figures, 1. Second mesh plate; 2. Motor; 3. Air duct; 4. Axial flow centrifugal fan assembly; 401. Centrifugal fan blade; 402. Axial flow fan blade; 5. Knob; 6. Filter screen; 7. Air inlet; 701. Mounting position; 8. Screw; 9. First mesh plate; 10. Mounting body; 11. Bracket.

[0029] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not drawn to scale. Detailed Implementation

[0030] The invention will now be further described with reference to the accompanying drawings.

[0031] like Figures 1-6 As shown, the present invention provides an axial-flow centrifugal fan device, mounted on a mounting body 10 having a drive assembly. The mounting body 10 has an air inlet, an air outlet communicating with the air inlet, and an air duct 3 for connecting the air inlet and the air outlet. The drive assembly is mounted on the air duct 3 and includes: an axial-flow centrifugal fan assembly 4, disposed within the air duct 3 and connected to the drive assembly; and a filter assembly, disposed at the air inlet and coaxially arranged with the axial-flow centrifugal fan assembly 4. This achieves the purification function of the device by combining a traditional axial-flow fan with a centrifugal fan into a single part. The filter screen is placed inside the centrifugal fan. After air enters from the center of the centrifugal fan, the air volume diffuses to both sides to the axial-flow fan to form a pressurization, thereby achieving the purification function of the device. It also solves the problem of insufficient air volume when the filter screen is installed and improves the resistance performance of the product.

[0032] In another embodiment of the present invention, unlike the above embodiments, the axial-centrifugal fan assembly 4 in this embodiment includes a centrifugal fan blade 401, and an axial-flow fan blade 402 is provided along one end of the centrifugal fan blade 401. Therefore, the airflow loss is significantly less than that of using an axial-flow fan blade alone or using a centrifugal fan blade alone, thus improving its resistance to airflow.

[0033] In another embodiment of the present invention, unlike the above embodiments, the centrifugal fan blade 401 and the axial fan blade 402 are integrally connected. This facilitates manufacturing.

[0034] As another embodiment of the present application, different from the above embodiment, the filter assembly in the embodiment comprises an air inlet cylinder 7, and a filter screen 6 is arranged on the air inlet cylinder 7. In this way, air enters the center of the filter screen through the air inlet cylinder, and the air after passing through the filter screen is filtered to remove dust, lint and other impurities. The filtered air enters the centrifugal fan blade part of the axial centrifugal fan blade from the outside of the filter screen, so as to realize air pressure boosting and enter the air duct.

[0035] As another embodiment of the present application, different from the above embodiment, the filter screen 6 in the embodiment is coaxial with the centrifugal fan blade 401 and is arranged separately. In this way, the air circulation is facilitated, the air after entering the centrifugal fan blade from the middle spreads to both sides to form pressure boosting of the axial fan blade, so as to realize the purification function of the filter screen and solve the problem of small air volume when the filter screen is installed, thereby improving the performance and purification function of the product.

[0036] As another embodiment of the present application, different from the above embodiment, the diameter of the filter screen 6 in the embodiment is smaller than the diameter of the centrifugal fan blade 401. In this way, the air circulation is facilitated, and the air can flow into the centrifugal fan blade 401 after being filtered.

[0037] As another embodiment of the present application, different from the above embodiment, the filter screen 6 in the embodiment is arranged in the centrifugal fan blade 401. In this way, the filtered air enters the centrifugal fan blade part of the axial centrifugal fan blade from the outside of the filter screen, so as to realize air pressure boosting.

[0038] As another embodiment of the present application, different from the above embodiment, the mounting body in the embodiment is provided with a support 11 for mounting the driving assembly, and the support 11 is provided with a mounting hole. In this way, the rotation of the axial centrifugal fan blade assembly is facilitated, so that air is sucked from the first screen plate through the air inlet cylinder into the center of the filter screen for filtration.

[0039] As another embodiment of the present application, different from the above embodiment, the driving assembly in the embodiment comprises a motor 2, the motor 2 is provided with a motor shaft, and the motor shaft penetrates the mounting hole and is connected with the axial centrifugal fan blade assembly 4. In this way, when the motor is started by power supply, the motor shaft starts to rotate, the axial centrifugal fan blade mounted on the motor shaft starts to rotate, and the air behind the axial centrifugal fan blade is sucked from the rear screen through the air inlet cylinder into the center of the filter screen for filtration. The filtered air enters the centrifugal fan blade part of the axial centrifugal fan blade from the outside of the filter screen, so as to realize air pressure boosting and enter the air duct. The air is further pushed to the front of the axial centrifugal fan blade through the axial fan blade part of the axial centrifugal fan blade, and is delivered to the air through the front screen. The problem of small air volume when the filter screen is installed is solved, and the performance and purification function of the product are improved.

[0040] As another embodiment of the present application, unlike the above-mentioned embodiment, the axial centrifugal fan blade device in this embodiment further comprises a knob 5 for fixing the axial centrifugal fan blade assembly, and the knob 5 is installed on the end of the motor shaft. Thus, the axial centrifugal fan blade assembly can be stably fixed so as to rotate with the motor shaft.

[0041] As a further optimization of the present application, a first mesh plate 9 is installed on the air inlet, and a second mesh plate 1 is installed on the air outlet. Thus, the components inside the air duct can be protected.

[0042] The present application further provides a fan comprising the above-mentioned axial centrifugal fan blade device, the motor shaft of the motor 2 of the axial centrifugal fan blade device passes through the center of the installation hole of the support 11 of the air duct 3 and is fixed on the support 11, and the motor shaft is in a suspended state and does not contact the support 11. The central hole of the axial centrifugal fan blade assembly 4 penetrates through the motor shaft, so that the axial centrifugal fan blade assembly 4 and the motor shaft are coaxial. Then, the fan blade knob 5 is used to fix the axial centrifugal fan blade assembly 4 on the motor shaft, so that the axial centrifugal fan blade assembly 4 can rotate synchronously with the rotating direction of the motor shaft. When the motor 2 is powered on and starts to rotate, the axial centrifugal fan blade assembly 4 installed on the motor shaft starts to rotate, and the air behind the fan blades is sucked and pushed to the front of the fan blades, so as to achieve the blowing and cooling effect.

[0043] The filter screen 6 is installed on the filter screen installation position 701 of the air inlet cylinder, and the filter screen 6 is fixed on the air inlet cylinder 7 by using the screw 8, so that the filter screen 6 and the air inlet cylinder 7 are effectively fixed to form a filter screen assembly. Then, the filter screen assembly is installed in the air duct 3, and the filter screen installed in the middle of the filter screen assembly can be inserted into the inside of the axial centrifugal fan blade assembly 4 because the inside of the axial centrifugal fan blade is empty at the middle position. Because the axial centrifugal fan blade assembly 4 is installed on the motor shaft and the filter screen 6 is installed on the air inlet cylinder 7, the two are coaxially installed, but they do not contact each other and are in a suspended state. The filtered air at the middle position of the filter screen 6 enters the centrifugal fan blade 401 of the axial centrifugal fan blade assembly 4, and then the filtered air is rotated and blown out to the air by the axial fan blade 402 of the axial centrifugal fan blade assembly 4.

[0044] The working principle of the application is: when the motor is started by power supply, the motor shaft starts to rotate, the axial flow centrifugal fan blade installed on the motor shaft starts to rotate, air behind the axial flow centrifugal fan blade is sucked from the rear net through the air inlet cylinder into the center position of the filter screen, the air after the filter screen realizes the filtration of dust, lint and other impurities, the filtered air enters the centrifugal fan blade part on the axial flow centrifugal fan blade from the outside of the filter screen, the air realizes pressure increase and enters the air duct, and then is rotated by the axial flow fan blade part on the axial flow centrifugal fan blade and pushed to the front of the axial flow centrifugal fan blade, and is delivered to the air through the front net, thereby solving the problem of small air volume when the filter screen is installed, and improving the performance and purification function of the product.

[0045] In the description of the present application, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "back", "inner", "outer", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0046] Although the present application has been described with reference to the preferred embodiments, various modifications can be made to it without departing from the scope of the present application, and equivalent components can be substituted therefor. In particular, the technical features mentioned in each embodiment can be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An axial flow centrifugal fan blade device provided on a mounting body having a driving assembly, said mounting body being provided with an air inlet, an air outlet communicating with said air inlet, and an air duct for communicating said air inlet and said air outlet, said driving assembly being provided on said air duct, characterized in that, Comprising: A axial flow centrifugal fan blade assembly arranged in the air duct and connected with the driving assembly; A filter assembly arranged at the air inlet and coaxially arranged with the axial flow centrifugal fan blade assembly; The axial flow centrifugal fan blade assembly comprises a centrifugal fan blade, and the centrifugal fan blade is provided with an axial flow fan blade along the axial direction of the centrifugal fan blade; The centrifugal fan blade is integrally connected with the axial flow fan blade; The axial flow fan blade and the centrifugal fan blade are combined to form a single part; The centrifugal fan blade and the axial flow fan blade are arranged side by side, the axial flow fan blade is arranged on the side of the centrifugal fan blade close to the air outlet, and the blade of the axial flow fan blade is located outside the centrifugal fan blade.

2. The axial-flow centrifugal fan blade device according to claim 1, characterized by: The filter assembly comprises an air inlet cylinder, and a filter screen is mounted on the air inlet cylinder.

3. The axial-flow centrifugal fan blade device according to claim 2, characterized in that: The filter screen is coaxial with the centrifugal fan blade and is arranged separately.

4. The axial-flow centrifugal fan blade device according to claim 3, characterized in that: The diameter of the filter screen is smaller than the diameter of the centrifugal fan blade.

5. The axial-flow centrifugal fan blade device according to claim 4, characterized in that: The filter screen is embedded in the centrifugal fan blade.

6. The axial-flow centrifugal fan blade arrangement according to any one of claims 1-5, characterized in that: A support for mounting the driving assembly is arranged on the mounting body, and a mounting hole is arranged on the support.

7. The axial-flow centrifugal fan blade device according to claim 6, characterized in that: The driving assembly comprises a motor, a motor shaft is arranged on the motor, the motor shaft penetrates through the mounting hole and is connected with the axial flow centrifugal fan blade assembly.

8. The axial-flow centrifugal fan blade device according to claim 7, characterized in that: A knob for fixing the axial flow centrifugal fan blade is further arranged, and the knob is mounted on the end of the motor shaft.

9. The axial-flow centrifugal fan blade arrangement according to any one of claims 1-5, characterized in that: A first screen plate is mounted on the air inlet, and a second screen plate is mounted on the air outlet.

10. A fan characterized by: The axial flow centrifugal fan blade device comprises any one of claims 1-9.

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