Damping type centrifugal fan device

Abstract

The utility model relates to a damping type centrifugal fan device which comprises a volute, a driving motor arranged on one side of the volute and an impeller assembly rotationally arranged on the inner side of the volute, and the impeller assembly comprises an air collector and an integrated impeller which are coaxially arranged; one side of the curved surface of the integrated impeller is tightly attached to the air collector; the integrated impeller comprises blades, a rear cover plate and a curved surface front cover plate, and the adjacent blades, the rear cover plate and the curved surface front cover plate are welded into a whole. The blades, the rear cover plate and the curved surface front cover plate are of an integrated structure, the wind collector is tightly attached to the impeller, the curved surface front cover plate structure effectively increases the flow volume of the centrifugal fan, wind vortex is generated on the prefabricated suction surface, the blades are of an arc-shaped integrated design, resistance of fluid in a flow channel is reduced, and energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal fans, in particular to a shock-absorbing centrifugal fan device. Background Art

[0002] Centrifugal fans are located above factories, workshops, and warehouses to ventilate and speed up air circulation, ensuring fresh air in these places, helping to purify the working environment and improve the health of workers, while also helping to preserve machinery and other industrial products.

[0003] However, most of the existing volute centrifugal fans are of non-integrated design, with large flow resistance, large flow loss, and high energy consumption; there is no shock-absorbing design, and the fan noise is high. Summary of the invention

[0004] The purpose of the utility model is to provide a centrifugal fan device with an integrated structure of blades, a rear cover plate and a curved front cover plate, in which the wind collector fits tightly with the impeller, the curved front cover plate structure effectively increases the volume of the centrifugal fan flow, a wind vortex is generated on the prefabricated suction surface, and the blade arc is integrated to reduce the resistance of the fluid in the flow channel and reduce energy consumption, so as to solve the above-mentioned technical problems.

[0005] To realize the above technical solution, the technical solution of the utility model is as follows: a shock-absorbing centrifugal fan device, comprising a volute, a driving motor arranged on one side of the volute, and an impeller assembly rotatably arranged on the inner side of the volute, the impeller assembly comprising a coaxially arranged air collector and an integrated impeller; one side of the integrated impeller curved surface is tightly fitted with the air collector; the integrated impeller comprises blades, a rear cover plate and a curved front cover plate, and the adjacent blades, rear cover plates and curved front cover plates are welded into an integrated body.

[0006] Furthermore, the blades are arranged in an arc shape, and a circular array is arranged on one side of the rear cover plate.

[0007] Furthermore, the curved front cover plate includes an annular bottom plate, an extension portion is provided on the inner side of the bottom plate along the axial direction of the bottom plate, and is contracted in the radial direction; one end of the air collector is inserted into the inner side of the extension portion.

[0008] Furthermore, the shock-absorbing centrifugal fan device also includes an air inlet, a fan base, a shock absorber and an air outlet; the volute is fixed on the fan base; the shock absorber is fixed on the bottom of the fan base; one end of the air inlet is inserted on the air collector; and the air outlet is fixed on the top of the volute.

[0009] Compared with the prior art, the utility model has the following beneficial effects: the utility model integrates the blades, rear cover plate and curved front cover plate into an integrated structure, the wind collector fits tightly with the impeller, the curved front cover plate structure effectively increases the volume of the centrifugal fan flow, a wind vortex is generated on the prefabricated suction surface, and the blade arc-shaped integrated design reduces the resistance of the fluid in the flow channel (the flow rate can be increased by 1.2 times) and reduces energy consumption (1.3 times the existing energy consumption can be saved); the bottom is equipped with a shock absorber to effectively reduce the fan noise and improve the comfort of the working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0011] Figure 1 It is an exploded view of the shock-absorbing centrifugal fan device of the utility model;

[0012] Figure 2 This is an exploded view of the impeller assembly of the utility model. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0014] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0015] Please refer to the attached Figure 1 to Figure 2As shown: a shock-absorbing centrifugal fan device, including a volute 1, a driving motor 2, an impeller assembly 3, an air inlet 4, a fan base 5, a shock absorber 6 and an air outlet 7; the volute 1 is fixed on the fan base 5; the shock absorber 6 is fixed on the bottom of the fan base 5; one end of the air inlet 4 is inserted on the impeller assembly 3; the air outlet 7 is fixed on the top of the volute 1; the driving motor 2 is arranged on one side of the volute 1, the impeller assembly 3 is rotatably arranged on the inner side of the volute 1, and the impeller assembly 3 includes a coaxially arranged air collector 31 and an integrated impeller 32; one side of the curved surface of the integrated impeller 32 is tightly fitted with the air collector 31; the integrated impeller 32 includes blades 321, a rear cover plate 322 and a curved front cover plate 323, and the adjacent blades 321, the rear cover plate 322 and the curved front cover plate 323 are welded into an integrated type. The blades 321 are arranged in an arc shape, and the circular array is arranged on one side of the rear cover plate 322. Specifically, the driving motor 2 is connected to the integrated impeller through the motor shaft, and the integrated impeller is welded into an integral body by the rear cover plate, the curved front cover plate, and the blades. The blades are designed in an arc shape, which can effectively reduce the resistance of the fluid in the flow channel. A shock absorber is provided under the base to effectively reduce noise. The utility model has the advantages of convenient blade welding, smooth impeller interior after welding, small fan vibration, low noise, and reduced energy consumption, and simple shaft disc processing and low manufacturing cost.

[0016] Based on the above embodiment, the curved front cover plate 323 includes an annular bottom plate, an extension portion is provided on the inner side of the bottom plate along the axial direction of the bottom plate, and is contracted in the radial direction; one end of the air collector 31 is inserted into the inner side of the extension portion.

[0017] The utility model works as follows: the impeller is driven to rotate by the driving motor 2. Through the rotation of the impeller, the gas is sucked in from the axial direction, accelerated along the arc-shaped blades, and finally discharged along the tangent direction of the impeller, thereby generating an airflow. The centrifugal fan draws air axially (parallel) relative to the drive shaft, turns the air 90° by rotating the radial impeller, and then blows it out radially. The motor is connected to the impeller through the motor shaft, and the impeller is welded into an integrated blade by a rear cover plate, a curved front cover plate, and blades. The blades are designed in an arc shape, which can effectively reduce the resistance of the fluid in the flow channel. A shock absorber is provided under the base to effectively reduce noise. The utility model has the advantages of convenient blade welding, smooth interior of the impeller after welding, small fan vibration, low noise and reduced energy consumption, and simple shaft disc processing and low manufacturing cost.

[0018] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not used to limit the present invention. Any person skilled in the art should be able to use the technical content disclosed above to make equivalent embodiments that are equivalent changes by slight changes or modifications without departing from the scope of the technical solution of the present invention. However, any brief modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A damping centrifugal fan device, comprising a volute (1), a drive motor (2) arranged on one side of the volute (1), and an impeller assembly (3) rotatably arranged inside the volute (1), characterized in that: The impeller assembly (3) comprises a coaxially arranged air collector (31) and an integrated impeller (32); one side of the curved surface of the integrated impeller (32) is arranged in close contact with the air collector (31); the integrated impeller (32) comprises blades (321), a rear cover plate (322) and a curved front cover plate (323); adjacent blades (321), rear cover plates (322) and curved front cover plates (323) are welded into an integrated structure.

2. The vibration-absorbing centrifugal fan device according to claim 1, characterized in that: The blades (321) are arranged in an arc shape, and are arranged in a circular array on one side of the rear cover plate (322).

3. The vibration-absorbing centrifugal fan device according to claim 1, characterized in that: The curved front cover plate (323) comprises an annular bottom plate, an extension portion is provided on the inner side of the bottom plate along the bottom plate axis direction and is contracted in the radial direction; one end of the air collector (31) is inserted into the inner side of the extension portion.

4. The vibration-damping centrifugal fan device according to any one of claims 1 to 3, characterized in that: The shock-absorbing centrifugal fan device also includes an air inlet (4), a fan base (5), a shock absorber (6) and an air outlet (7); the volute (1) is fixedly mounted on the fan base (5); the shock absorber (6) is fixedly mounted on the bottom of the fan base (5); one end of the air inlet (4) is inserted into the air collector (31); and the air outlet (7) is fixedly mounted on the top of the volute (1).

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