Magnetic suspension centrifugal blower

Abstract

The utility model relates to the field of blowers, in particular to a magnetic suspension centrifugal blower which comprises a shell, a first radial magnetic suspension bearing, a rotor, a motor stator, a magnetic suspension thrust bearing, a second radial magnetic suspension bearing, a thrust bearing, an exhaust device, a heat dissipation device, an air inlet pipe, a housing, an exhaust outlet and a base. The air exhaust device comprises a disc fixedly arranged on the rotor in a sleeving mode, a plurality of cross-shaped sliding grooves annularly distributed in the disc at equal intervals, a plurality of sliding blocks movably arranged in the multiple cross-shaped sliding grooves correspondingly, and a plurality of blades fixedly arranged on the multiple sliding blocks correspondingly. The baffles are fixedly arranged on the multiple sliding blocks in a penetrating mode and used for sealing the multiple cross-shaped sliding grooves, and the adjusting assembly is used for adjusting the multiple sliding blocks to move at the same time. According to the utility model, the wind power is adjusted by adjusting the positions of the plurality of blades, so that the magnetic suspension centrifugal blower runs stably.

Description

Technical Field

[0001] The utility model relates to the technical field of blowers, in particular to a magnetic suspension centrifugal blower. Background Art

[0002] The magnetic levitation centrifugal blower is a mechanical device for conveying gas that overcomes the shortcomings of traditional blowers. It utilizes core technologies such as magnetic bearings, a three-dimensional flow impeller, a high-speed permanent magnet synchronous motor, and a high-efficiency inverter for speed regulation. During startup, the blower first levitates and then rotates, creating a frictionless, lubrication-free system. The three-dimensional flow impeller is directly connected to the rotor, resulting in zero transmission losses. Even if the magnetic bearing fails, the protective bearing in the system can still safely shut down the high-speed rotor without causing serious damage to the equipment.

[0003] At present, the magnetic levitation centrifugal blower controls the size of the wind force by adjusting the speed of the rotor. The change of the rotor speed will cause the overall vibration of the magnetic levitation centrifugal blower, thereby affecting the stability of the transmission and further affecting the overall service life of the blower. Utility Model Content

[0004] The content of this application is used to briefly introduce concepts that will be described in detail in the detailed description section below. The content of this application is not intended to identify key features or essential features of the technical solution for which protection is sought, nor is it intended to limit the scope of the technical solution for which protection is sought.

[0005] In order to solve the technical problems mentioned in the above background technology section, some embodiments of the present application provide a magnetic levitation centrifugal blower, including a shell, a first radial magnetic levitation bearing, a rotor, a motor stator, a magnetic levitation thrust bearing, a second radial magnetic levitation bearing, a thrust bearing, an exhaust device, a heat dissipation device, an air inlet pipe, a cover, an exhaust port, and a base; the exhaust device includes a disc fixedly mounted on the rotor, a plurality of cross slots equidistantly distributed in an annular manner on the disc, a plurality of sliders movably arranged in the plurality of cross slots, a plurality of blades fixedly arranged on the plurality of sliders, a baffle respectively penetrating and fixed on the plurality of sliders and used to seal the plurality of cross slots, and an adjustment component for simultaneously adjusting the movement of a plurality of sliders.

[0006] Specifically, the adjustment component includes a movable plate movably arranged on the rotor, a rotating rod rotatably arranged on the movable plate and the slider at both ends, a circular plate rotatably sleeved on the movable plate, a plurality of screws equidistantly distributed in an annular shape and rotatably arranged on the shell, a plurality of external gears respectively fixedly sleeved on the plurality of screws, and an internal gear rotatably arranged on the inner wall of the shell and meshing with the plurality of external gears; the plurality of screws are threadedly engaged with the circular plate.

[0007] Specifically, the air inlet pipe is provided with a bell mouth.

[0008] Specifically, the heat dissipation device includes a rotating ring rotatably arranged on the inner wall of the shell, a plurality of first through holes equidistantly distributed in an annular manner on the rotating ring, a fixed ring fitted with the rotating ring and fixedly arranged on the inner wall of the shell, a plurality of second through holes equidistantly distributed in annular manner on the fixed ring, a limiting groove arranged on the inner wall of the shell, a limiting plate rotatably arranged on the limiting groove and fixedly arranged on the rotating ring, a spring whose two ends are respectively fixed on the shell and the limiting plate, a wind shield fixed on the rotating ring, and a plurality of cooling channels equidistantly distributed in annular manner on the shell.

[0009] Specifically, the initial positions of the first through hole and the second through hole partially overlap.

[0010] Specifically, a gap is left between the circular plate and the inner wall of the shell.

[0011] Specifically, a gap is left between the disc and the rotating ring.

[0012] The beneficial effects of the present invention are as follows: when the magnetic levitation centrifugal blower is running, the first radial magnetic levitation bearing and the second radial magnetic levitation bearing can limit the two ends of the rotor, specifically the limit in the direction perpendicular to its axis, so that the rotor rotation is stable; the magnetic levitation thrust bearing can limit the rotor along the axial direction, so that the rotor rotation process is more stable; the rotor drives the disc to rotate, and the multiple blades rotate around the axis of the rotor, so that the external air enters the cover through the air inlet pipe, the pressure inside the cover increases, most of the air is discharged from the exhaust port on the cover, and a small part of the air passes through the heat dissipation device to cool the magnetic levitation centrifugal blower as a whole; the adjustment component is used to adjust the simultaneous movement of multiple blades, and the center of the disc moves outward or inward at the same time to adjust the wind force.

[0013] By driving one of the screws to rotate, the internal gear on the screw rotates, the external gear rotates, and the internal gear on the other screw rotates at the same time, and finally multiple screws rotate at the same time and in the same direction, driving the movable plate to move, and the movable plate drives the circular plate to move along the axis of the rotor, causing the rotating rod to rotate, thereby causing the slider to move in the cross slide, and finally causing the blades to move, thereby adjusting the wind output of the magnetic levitation centrifugal blower.

[0014] The purpose of adjusting the wind force can be achieved by moving the blades without changing the rotor speed, thereby improving the stability of the rotor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting a part of this application are used to provide a further understanding of this application and make other features, purposes and advantages of this application more apparent. The drawings and descriptions of the exemplary embodiments of this application are used to explain this application and do not constitute an improper limitation on this application.

[0016] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the elements and components are not necessarily drawn to scale.

[0017] In the attached figure:

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 It is a side schematic diagram of the utility model;

[0020] Figure 3 for Figure 2 The cross-sectional view of line AA in FIG;

[0021] Figure 4 for Figure 3 A magnified view of point A in the figure;

[0022] Figure 5 for Figure 4 Enlarged view of point B in FIG.

[0023] Figure 6 for Figure 3 Cross-sectional view of line BB in FIG;

[0024] Figure 7 for Figure 6 Enlarged view of point C in the figure;

[0025] Figure 8 for Figure 3 Cross-sectional view of line CC in FIG;

[0026] Figure 9 for Figure 3 Cross-sectional view of line DD in FIG;

[0027] Figure 10 for Figure 9 The enlarged view of point D in the figure;

[0028] Figure 11 for Figure 3 Cross-sectional view of line EE in FIG. DETAILED DESCRIPTION

[0029] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are for illustrative purposes only and are not intended to limit the scope of protection of the present disclosure.

[0030] It should also be noted that, for ease of description, only the parts related to the relevant utility model are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0031] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0032] It should be noted that the modifications of "one" and "multiple" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, they should be understood as "one or more".

[0033] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0034] Reference Figure 1-11 As shown, a magnetic levitation centrifugal blower described in the utility model, a magnetic levitation centrifugal blower described in the present application, the technical problem mentioned, some embodiments of the present application provide a magnetic levitation centrifugal blower, including a shell 1, a first radial magnetic levitation bearing 2, a rotor 3, a motor stator 4, a magnetic levitation thrust bearing 5, a second radial magnetic levitation bearing 6, a thrust bearing 7, an exhaust device 8, a heat dissipation device 9, an air inlet pipe 10, a cover 11, an exhaust port 12, a base 13, a disc 81 fixedly sleeved on the rotor 3, a plurality of cross slides 82 equidistantly annularly distributed on the disc 81, a plurality of sliders 83 respectively movably arranged in the plurality of cross slides, a plurality of blades 84 respectively fixed on the plurality of sliders, and baffles respectively penetrating and fixed on the plurality of sliders and used to seal the plurality of cross slides. Plate 85, an adjustment component 86 for simultaneously adjusting the movement of multiple sliders; when the magnetic levitation centrifugal blower is running, the first radial magnetic levitation bearing and the second radial magnetic levitation bearing can limit the two ends of the rotor, specifically the limit in the direction perpendicular to its axis, so that the rotor rotation is stable, and the magnetic levitation thrust bearing can be set to limit the rotor along the axial direction, so that the rotor rotation process is more stable, the rotor drives the disc to rotate, and the multiple blades rotate around the axis of the rotor, so that the external air enters the cover through the air inlet pipe, the pressure inside the cover increases, most of the air is discharged from the exhaust port on the cover, and a small part of the air passes through the heat dissipation device to cool the magnetic levitation centrifugal blower as a whole; the adjustment component is used to adjust the movement of multiple blades at the same time, and the center of the disc moves outward or inward at the same time to adjust the wind force.

[0035] Specifically, the adjustment component 86 includes a movable plate 861 movably arranged on the rotor, a rotating rod 862 rotatably arranged on the movable plate and the slider at both ends, a circular plate 863 rotatably sleeved on the movable plate, a plurality of screws 864 equidistantly distributed in an annular manner and rotatably arranged on the shell, a plurality of external gears 865 respectively fixedly sleeved on the plurality of screws, and an internal gear 866 rotatably arranged on the inner wall of the shell and meshing with the plurality of external gears; the plurality of screws are threadedly engaged with the circular plate; by driving one of the screws to rotate, the internal gear on the screw rotates, the external gear rotates, and the internal gear on the other screw rotates at the same time, and finally the plurality of screws rotate at the same time and in the same direction, driving the movable plate to move, and the movable plate drives the circular plate to move along the axis direction of the rotor, so that the rotating rod rotates, so that the slider moves in the cross slot, and finally the blades move, thereby adjusting the size of the wind output of the magnetic levitation centrifugal blower.

[0036] Specifically, the air inlet pipe 10 is provided with a bell mouth; the bell mouth structure guides the air entering the shell.

[0037] Specifically, the heat dissipation device 9 includes a rotating ring 91 rotatably provided on the inner wall of the shell 1, a plurality of first through holes 92 equidistantly distributed on the rotating ring, a fixing ring 93 fitted with the rotating ring and fixedly provided on the inner wall of the shell, a plurality of second through holes 94 equidistantly distributed on the fixing ring, a limiting groove 95 provided on the inner wall of the shell, a limiting plate 96 rotatably provided on the limiting groove and fixedly provided on the rotating ring, a spring 97 whose two ends are respectively fixed on the shell and the limiting plate, a windshield strip 98 fixedly provided on the rotating ring, and a plurality of cooling channels 99 equidistantly distributed on the shell; the first through hole 92 partially overlaps with the initial position of the second through hole 94; due to the increase in the pressure inside the shell, a small part of the wind enters the shell through the overlap of the first through hole and the second through hole, and is discharged from one end thereof through multiple cooling channels, cooling the magnetic levitation centrifugal blower as a whole. The rotation of multiple blades causes the air entering the shell to rotate, driving the windshield strip to move, causing the swivel to rotate, driving the limit plate to move to compress the spring, adjusting the overlapping part of the first through hole and the second through hole, thereby adjusting the size of the air flow entering the shell. When the wind force of the magnetic levitation centrifugal blower is adjusted, it can self-adaptively adjust the air cooling effect.

[0038] Specifically, a gap is left between the circular plate 863 and the inner wall of the housing 1, so that the air in the housing can enter the multiple cooling channels through the first through hole and the second through hole.

[0039] Specifically, a gap is left between the disc 82 and the rotating ring 91 to ensure that the rotation of the disc does not drive the rotating ring to rotate, and the amount of air passing through the gap between the two is very small and can be ignored.

[0040] The above descriptions are merely some preferred embodiments of the present disclosure and illustrate the underlying technical principles. Those skilled in the art should understand that the scope of the utility model disclosed herein is not limited to technical solutions formed by specific combinations of the aforementioned technical features. It also encompasses other technical solutions formed by any combination of the aforementioned technical features or their equivalents, without departing from the aforementioned utility model concept. For example, a technical solution formed by replacing the aforementioned features with (but not limited to) technical features with similar functions disclosed in the embodiments of the present disclosure.

Claims

1. A magnetic levitation centrifugal blower, comprising a housing (1), a first radial magnetic levitation bearing (2), a rotor (3), a motor stator (4), a magnetic levitation thrust bearing (5), a second radial magnetic levitation bearing (6), a thrust bearing (7), an exhaust device (8), a heat dissipation device (9), an air inlet pipe (10), a cover (11), an air outlet (12), and a base (13); characterized in that: The exhaust device comprises a disc (81) fixedly mounted on the rotor (3), a plurality of cross slots (82) equidistantly distributed in an annular manner on the disc (81), a plurality of sliders (83) movably mounted in the plurality of cross slots, a plurality of blades (84) fixedly mounted on the plurality of sliders, a baffle (85) fixedly mounted on the plurality of sliders and used to seal the plurality of cross slots, and an adjustment assembly (86) for simultaneously adjusting the movement of the plurality of sliders. The adjustment assembly (86) includes a movable plate (861) movably arranged on the rotor, a rotating rod (862) rotatably arranged on the movable plate and the slider at both ends, a circular plate (863) rotatably mounted on the movable plate, a plurality of screw rods (864) rotatably arranged on the housing and distributed in an equidistant annular pattern, a plurality of external gears (865) respectively fixedly mounted on the plurality of screw rods, and an internal gear (866) rotatably mounted on the inner wall of the housing and meshing with the plurality of external gears; the plurality of screw rods are threadably engaged with the circular plate.

2. A magnetic levitation centrifugal blower according to claim 1, characterized in that: The air inlet pipe (10) is provided with a bell mouth.

3. The magnetic levitation centrifugal blower according to claim 1, characterized in that: The heat dissipation device (9) comprises a rotating ring (91) rotatably arranged on the inner wall of the shell (1), a plurality of first through holes (92) equidistantly distributed in an annular pattern on the rotating ring, a fixing ring (93) fitted with the rotating ring and fixedly arranged on the inner wall of the shell, a plurality of second through holes (94) equidistantly distributed in an annular pattern on the fixing ring, a limiting groove (95) arranged on the inner wall of the shell, a limiting plate (96) rotatably arranged on the limiting groove and fixedly arranged on the rotating ring, a spring (97) with its two ends respectively fixed on the shell and the limiting plate, a windshield strip (98) fixedly arranged on the rotating ring, and a plurality of cooling channels (99) equidistantly distributed in annular pattern on the shell.

4. The magnetic levitation centrifugal blower according to claim 3, characterized in that: The first through hole partially overlaps with the second through hole at initial positions.

5. The magnetic levitation centrifugal blower according to claim 1, characterized in that: A gap is left between the circular plate (863) and the inner wall of the shell (1).

6. The magnetic levitation centrifugal blower according to claim 3, characterized in that: A gap is left between the disc (81) and the rotating ring (91).

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