Magnetic suspension centrifugal fan with air inlet box

Abstract

The utility model discloses a magnetic suspension centrifugal fan with an air inlet box, which comprises the air inlet box, a common base, an air inlet, a casing, an impeller and a high-speed permanent magnet synchronous motor. The angle of the air inlet box side plate and the radian and the overall size of the air inlet box rectifying plate need to be matched with the size of the air inlet to be accurately calculated and analyzed to be determined, the air inlet comprises a rectifying cover, a rectifying cylinder and a rectifying plate, the structure of the rectifying cover needs to be determined through fluid simulation calculation, and the machine shell comprises a first machine shell, a second machine shell and a third machine shell. The impeller comprises a front disc, blades, a hub, a rear disc and small blades. According to the technical scheme, radial air inlet at any angle can be guaranteed, space needed by a site is saved, meanwhile, part of axial force borne by the impeller can be effectively counteracted, and the diameter or the rotating speed of the impeller can be properly increased.

Description

Technical Field

[0001] This utility model relates to the field of magnetic levitation centrifugal fan technology, specifically a magnetic levitation centrifugal fan with an air inlet box. Background Technology

[0002] As a new type of high-efficiency, energy-saving, and environmentally friendly ventilation equipment, magnetic levitation centrifugal fans can effectively reduce energy consumption and environmental pollution in industrial production and meet the market demand for energy-saving and emission-reduction equipment. With the development of the times, the demand for fan flow and pressure is also increasing. The increase in flow and pressure will inevitably require an increase in impeller diameter or speed, and the axial force will increase accordingly. At the same time, the existing magnetic levitation fans are all axial air intake, which cannot meet the market demand. Some sites have limited space and cannot provide the conditions for axial air intake. Utility Model Content

[0003] The purpose of this invention is to provide a magnetic levitation centrifugal fan with an air intake box, which has the advantage of arbitrary air intake.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a magnetic levitation centrifugal fan with an air inlet box, comprising an air inlet box, a common base, an air inlet, a casing, an impeller, and a high-speed permanent magnet synchronous motor. The air inlet box includes an air inlet box side plate and an air inlet box rectifier plate. The angle of the air inlet box side plate, the curvature of the air inlet box rectifier plate, and the overall dimensions need to be precisely calculated and analyzed in conjunction with the dimensions of the air inlet. The air inlet includes a shunting hood, a rectifier cylinder, and a rectifier plate. The structure of the shunting hood needs to be determined through fluid simulation calculations. The casing includes casing one, casing two, and casing three. The impeller includes a front disc, blades, a hub, a rear disc, and small blades. The high-speed permanent magnet synchronous motor includes a rotor, an axial magnetic bearing, a radial magnetic bearing, a heat dissipation impeller, an inlet section, a filter device one, and a filter device two.

[0005] As a preferred embodiment, the heat dissipation impeller is directly connected to the rear shaft end of the rotor.

[0006] As a preferred embodiment, the air intake box, the housing, and the high-speed permanent magnet synchronous motor are fixed to a common base by bolts.

[0007] As a preferred embodiment, the air inlet is connected to the air intake box and the housing by bolts.

[0008] As a preferred embodiment, the impeller is directly connected to the rotor shaft of the high-speed permanent magnet synchronous motor and suspended inside the housing.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] Through the above-mentioned technical solution, this utility model can ensure radial air intake at any angle, save the space required on site, and effectively offset part of the axial force on the impeller, allowing for an appropriate increase in the impeller diameter or rotational speed. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of the magnetic levitation centrifugal fan body of this utility model;

[0012] Figure 2 This is a schematic diagram of the air intake box structure of this utility model;

[0013] Figure 3 This is a schematic diagram of the air inlet structure of this utility model;

[0014] Figure 4 This is a schematic diagram of the impeller structure of this utility model;

[0015] Figure 5 This is a schematic diagram of the casing structure of this utility model.

[0016] In the diagram: 1. Air intake box; 1.1. Air intake box side plate; 1.2. Air intake box rectifier plate; 2. Common base; 3. Air inlet; 3.1. Scaffold; 3.2. Rectifier cylinder; 3.3. Rectifier plate; 4. Housing; 4.1. Housing 1; 4.2. Housing 2; 4.3. Housing 3; 5. Impeller; 5.1. Front plate; 5.2. Blade; 5.3. Hub; 5.4. Rear plate; 5.5. Small blade; 6. High-speed permanent magnet synchronous motor; 6.1. Rotor; 6.2. Axial magnetic bearing; 6.3. Radial magnetic bearing; 6.4. Cooling impeller; 6.5. Inlet section; 6.6. Filter device 1; 6.7. Filter device 2. Detailed Implementation

[0017] 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, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0019] Example 1:

[0020] Please see Figure 1As shown, this utility model provides a magnetic levitation centrifugal fan with an air inlet box, including an air inlet box 1, a common base 2, an air inlet 3, a casing 4, an impeller 5, and a high-speed permanent magnet synchronous motor 6. The air inlet box 1 includes an air inlet box side plate 1.1 and an air inlet box rectifier plate 1.2. The angle of the air inlet box side plate 1.1, the curvature of the air inlet box rectifier plate 1.2, and the overall dimensions all need to be precisely calculated and analyzed in conjunction with the dimensions of the air inlet 3. The air inlet 3 includes a shunting cover 3.1, a rectifier cylinder 3.2, and... The structures of the rectifier plate 3.3 and the fairing 3.1 need to be determined through fluid simulation calculations. The housing 4 includes housing one 4.1, housing two 4.2 and housing three 4.3. The impeller 5 includes the front plate 5.1, blades 5.2, hub 5.3, rear plate 5.4 and small blades 5.5. The high-speed permanent magnet synchronous motor 6 includes the rotor 6.1, axial magnetic bearing 6.2, radial magnetic bearing 6.3, heat dissipation impeller 6.4, inlet section 6.5, filter device one 6.6 and filter device two 6.7.

[0021] This technical solution can ensure radial air intake at any angle, saving space on site, and can effectively counteract part of the axial force on the impeller, allowing for an appropriate increase in impeller diameter or speed.

[0022] Example 2:

[0023] Based on Embodiment 1, the heat dissipation impeller 6.4 is directly connected to the rear shaft end of the rotor 6.1. The air inlet box 1, the housing 4 and the high-speed permanent magnet synchronous motor 6 are fixed to the common base 2 by bolts. The air inlet 3 is connected to the air inlet box 1 and the housing 4 by bolts. The impeller 5 is directly connected to the shaft head of the rotor 6.1 of the high-speed permanent magnet synchronous motor 6 and is suspended inside the housing 4.

[0024] The working principle of this utility model is as follows: the axial magnetic bearing 6.2 and the radial magnetic bearing 6.3 cooperate to ensure that the rotor always maintains a stable suspended state. The heat dissipation impeller 6.4 is directly connected to the rear shaft end of the rotor 6.1. The high-pressure airflow generated by the heat dissipation impeller 6.4 can efficiently remove the heat of the axial magnetic bearing 6.2 and the radial magnetic bearing 6.3. The first filter device 6.6 and the second filter device 6.7 ensure that the incoming air is clean. Then, the air inlet 3 is connected to the air inlet box 1. The connected whole is then connected to the housing 4.2. After adjustment, it is fixed on the common base 2. The impeller 5 is directly connected to the front shaft end of the rotor 6.1 of the high-speed permanent magnet synchronous motor 6. Then, the connected whole is placed in the housing 4.2. The gap between the impeller 5 and the air inlet 3 and the housing 4.2 is adjusted. Then, it is fixed on the common base 2.

[0025] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0026] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A magnetic levitation centrifugal fan with an air inlet box, comprising an air inlet box (1), a common base (2), an air inlet (3), a casing (4), an impeller (5), and a high-speed permanent magnet synchronous motor (6), characterized in that: The air intake box (1) includes an air intake box side plate (1.1) and an air intake box rectifier plate (1.2). The angle of the air intake box side plate (1.1), the curvature of the air intake box rectifier plate (1.2), and the overall size need to be determined after precise calculation and analysis in conjunction with the size of the air inlet (3). The air inlet (3) includes a shroud (3.1), a rectifier cylinder (3.2), and a rectifier plate (3.3). The structure of the shroud (3.1) needs to be determined through fluid simulation calculation. The casing (4) contains... The impeller (5) includes a first casing (4.1), a second casing (4.2), and a third casing (4.3). The impeller (5) includes a front disc (5.1), blades (5.2), a hub (5.3), a rear disc (5.4), and small blades (5.5). The high-speed permanent magnet synchronous motor (6) includes a rotor (6.1), an axial magnetic bearing (6.2), a radial magnetic bearing (6.3), a heat dissipation impeller (6.4), an inlet section (6.5), a first filter device (6.6), and a second filter device (6.7).

2. The magnetic levitation centrifugal fan with an air inlet box according to claim 1, characterized in that: The heat dissipation impeller (6.4) is directly connected to the rear shaft end of the rotor (6.1).

3. A magnetic levitation centrifugal fan with an air inlet box according to claim 1, characterized in that: The air intake box (1), the housing (4), and the high-speed permanent magnet synchronous motor (6) are fixed to the common base (2) by bolts.

4. A magnetic levitation centrifugal fan with an air inlet box according to claim 1, characterized in that: The air inlet (3) is connected to the air inlet box (1) and the housing (4) by bolts.

5. A magnetic levitation centrifugal fan with an air inlet box according to claim 1, characterized in that: The impeller (5) is directly connected to the rotor (6.1) shaft of the high-speed permanent magnet synchronous motor (6) and suspended inside the housing (4).

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