Shaftless magnetic suspension type fan

Abstract

The utility model provides a shaftless magnetic suspension type fan which comprises a fan shell, a cylindrical rotor, two magnetic suspension bearings and ventilation noise reduction meshes, a stator winding is arranged on the inner side of the fan shell, and the two magnetic suspension bearings are installed at the left end and the right end of the interior of the fan shell respectively. Dustproof rubber rings are longitudinally installed at the left end and the right end in the fan shell, second sliding rings are arranged on the inner sides of the two dustproof rubber rings, first sliding rings are arranged on the inner sides of the two second sliding rings in a sliding mode, the cylindrical rotor is suspended in the fan shell, and a rotor winding is arranged on the annular side face of the cylindrical rotor. By means of the design, the problem that in the using process of an original device, friction and vibration are generated due to the fact that an internal rotor makes contact with a bearing, and then noise is generated is solved, the fan structure is good in practicability, does not need a rotating shaft and can rotate and work through magnetic suspension, and therefore harsh noise cannot be generated, and the service life of the fan is prolonged. And the device is convenient to use in an external quiet environment and is convenient to popularize.

Description

Technical Field

[0001] The utility model discloses a shaftless magnetic suspension type fan, belonging to the technical field of fan equipment. Background Art

[0002] A fan is a machine that relies on input mechanical energy to increase gas pressure and deliver gas. It is a driven fluid machine. Fan is China's customary abbreviation for gas compression and gas delivery machinery. Commonly referred to fans include ventilators, blowers, and wind turbines. Currently, traditional fans rely on the rotation of the motor shaft to drive the fan blades to rotate during use.

[0003] However, during the use of this type of motor, the internal rotor and bearing will rub and vibrate, which will generate noise. Especially after long-term use without lubricating oil, it is very easy to generate loud noise. Now there is an urgent need for a shaftless magnetic levitation fan to solve the above problems. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a shaftless magnetic levitation fan to solve the problems raised in the above-mentioned background technology. The utility model has a reasonable structure and good practicality. A fan structure is designed that does not require a rotating shaft and can rotate by utilizing magnetic levitation, so that it does not produce harsh noise, is easy to use in a quiet environment, and is easy to promote.

[0005] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical scheme: a shaftless magnetic suspension fan, comprising a fan housing, a cylindrical rotor, a magnetic suspension bearing and a ventilation and noise reduction mesh, a stator winding is arranged on the inner side of the fan housing, two magnetic suspension bearings are arranged, and the two magnetic suspension bearings are respectively installed on the left and right ends of the fan housing, dustproof rubber rings are longitudinally installed on the left and right ends of the fan housing, a second slip ring is arranged on the inner side of the two dustproof rubber rings, and a first slip ring is slidably arranged on the inner side of the two second slip rings, the cylindrical rotor is suspended in the fan housing, a rotor winding is arranged on the annular side of the cylindrical rotor, the left and right ends of the cylindrical rotor are magnetically suspended by magnets and are located on the inner sides of two magnetic suspension bearings, a plurality of arc-shaped fan blades are arranged on the inner side of the cylindrical rotor, and an annular step frame is arranged on the annular side of the ventilation and noise reduction mesh, and the annular step frame is clamped on the left end of the fan housing.

[0006] Furthermore, insulating rubber rings are provided on the left and right sides of the two magnetic suspension bearings.

[0007] Furthermore, the two first slip rings are respectively fixed to the left and right ends of the annular side surface of the cylindrical rotor.

[0008] Furthermore, the rotor winding is located inside the stator winding.

[0009] Furthermore, a label sticker is attached to the upper end of the fan housing.

[0010] Furthermore, support clamps are installed on the left and right sides of the lower end of the fan housing, and a connecting plate is arranged between the two support clamps.

[0011] Furthermore, a power box is installed on the upper end of the connecting plate.

[0012] The beneficial effects of the utility model: the utility model is a shaftless magnetic levitation fan. Since the utility model adds a stator winding, a rotor winding, a cylindrical rotor, an arc-shaped fan blade, a first slip ring, a second slip ring, a magnetic levitation bearing, an annular step frame and a ventilation noise reduction mesh, our design improvement and actual use have shown that the device has good practicality. A fan structure is designed that does not require a rotating shaft and can rotate by magnetic levitation, so that it will not produce harsh noise (only a slight sound will be emitted without any impact), is easy to use in a quiet environment outside, and is easy to promote. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0014] Figure 1 This is a three-dimensional schematic diagram of the overall structure of a shaftless magnetic suspension fan of the utility model;

[0015] Figure 2 It is a cross-sectional schematic diagram of a shaftless magnetic suspension fan of the utility model;

[0016] Figure 3 This is a schematic diagram of the connection of a dustproof rubber ring of a shaftless magnetic suspension fan of the utility model;

[0017] In the figure: 1-fan casing, 2-stator winding, 3-rotor winding, 4-cylindrical rotor, 5-arc-shaped fan blades, 6-first slip ring, 7-second slip ring, 8-dustproof rubber ring, 9-insulating rubber ring, 10-magnetic bearing, 11-annular step frame, 12-ventilation and noise reduction mesh, 13-label sticker, 14-support card board, 15-connecting plate, 16-power box. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0019] See also Figure 1-Figure 3The utility model provides a technical solution: a shaftless magnetic suspension fan, including a fan housing 1, a cylindrical rotor 4, a magnetic suspension bearing 10 and a ventilation noise reduction mesh 12, a stator winding 2 is arranged inside the fan housing 1, two magnetic suspension bearings 10 are arranged, and the two magnetic suspension bearings 10 are respectively installed at the left and right ends of the fan housing 1, and dustproof rubber rings 8 are longitudinally installed at the left and right ends of the fan housing 1, and the inner sides of the two dustproof rubber rings 8 are both provided with second slip rings 7, and the inner sides of the two second slip rings 7 are both slidably provided with first slip rings. Ring 6, the cylindrical rotor 4 is suspended inside the fan housing 1, the rotor winding 3 is arranged on the annular side of the cylindrical rotor 4, the left and right ends of the cylindrical rotor 4 are magnetically suspended by magnets and are located on the inner sides of two magnetic suspension bearings 10, a plurality of arc-shaped fan blades 5 are arranged on the inner side of the cylindrical rotor 4, and the annular side of the ventilation and noise reduction mesh 12 is provided with an annular step frame 11, and the annular step frame 11 is clamped on the left end of the fan housing 1. This design solves the problem that during the use of the original device, the internal rotor contacts the bearing, rubs and vibrates, and then generates noise.

[0020] As the first embodiment of the utility model: insulating rubber rings 9 are provided on the left and right sides of the two magnetic bearings 10. The added insulating rubber rings 9 can prevent dust from entering the left and right sides of the two magnetic bearings 10. The two first slip rings 6 are respectively fixed to the left and right ends of the annular side of the cylindrical rotor 4. The two added first slip rings 6 can be used to position the cylindrical rotor 4 when it is suspended inside the fan housing 1, and assist it in stable rotation. The rotor winding 3 is located on the inner side of the stator winding 2. When the added stator winding 2 is energized, a rotating magnetic field is generated, and the force is transmitted to the rotor winding 3. Through the rotation of the rotor winding 3 and the cylindrical rotor 4, multiple arc-shaped fan blades 5 can be driven to rotate.

[0021] A label sticker 13 is attached to the upper end of the fan housing 1, and the added label sticker 13 facilitates people to know the information of the fan housing 1. Supporting card plates 14 are installed on the left and right sides of the lower end of the fan housing 1, and a connecting plate 15 is arranged between the two supporting card plates 14. A power box 16 is installed on the upper end of the connecting plate 15. The added supporting card plates 14 facilitate the support of the fan housing 1.

[0022] As the second embodiment of the utility model: when the device is in use, the stator winding 2 is energized, the stator winding 2 will generate a rotating magnetic field, and the force will be transmitted to the rotor winding 3. Through the rotation of the rotor winding 3 and the cylindrical rotor 4, the multiple arc-shaped fan blades 5 can be driven to rotate. Due to the setting of the magnetic bearing 10 and the shaftless setting of the cylindrical rotor 4, it can prevent the cylindrical rotor 4 from rotating and causing friction and vibration of the contact objects, thereby generating noise. In addition, the sound absorption and noise reduction setting of the ventilation noise reduction mesh 12 is combined to prevent it from generating harsh noise during operation (only a slight sound will be emitted without any impact).

[0023] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0024] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A shaftless magnetic suspension fan, comprising a fan housing (1), a cylindrical rotor (4), a magnetic suspension bearing (10) and a ventilation and noise reduction mesh (12), characterized in that: A stator winding (2) is arranged inside the fan housing (1), two magnetic bearings (10) are arranged, and the two magnetic bearings (10) are respectively installed at the left and right ends inside the fan housing (1); Dustproof rubber rings (8) are longitudinally installed at the left and right ends of the fan housing (1), and second slip rings (7) are arranged inside the two dustproof rubber rings (8), and first slip rings (6) are slidably arranged inside the two second slip rings (7); The cylindrical rotor (4) is suspended in the air inside the fan housing (1); a rotor winding (3) is arranged on the annular side surface of the cylindrical rotor (4); the left and right ends of the cylindrical rotor (4) are magnetically suspended in the air by magnets and are located inside two magnetic suspension bearings (10); a plurality of arc-shaped fan blades (5) are arranged in a staggered manner inside the cylindrical rotor (4); an annular step frame (11) is arranged on the annular side surface of the ventilation and noise reduction mesh (12); and the annular step frame (11) is clamped on the left end of the fan housing (1).

2. The shaftless magnetic suspension fan according to claim 1, characterized in that: Insulating rubber rings (9) are provided on the left and right sides of the two magnetic suspension bearings (10).

3. The shaftless magnetic suspension fan according to claim 1, characterized in that: The two first slip rings (6) are respectively fixed on the left and right ends of the annular side surface of the cylindrical rotor (4).

4. The shaftless magnetic suspension fan according to claim 1, characterized in that: The rotor winding (3) is located inside the stator winding (2).

5. The shaftless magnetic suspension fan according to claim 1, characterized in that: A label sticker (13) is attached to the upper end of the fan housing (1).

6. The shaftless magnetic suspension fan according to claim 1, characterized in that: Supporting clips (14) are installed on the left and right sides of the lower end of the fan housing (1), and a connecting plate (15) is arranged between the two supporting clips (14).

7. The shaftless magnetic suspension fan according to claim 6, characterized in that: A power supply box (16) is installed on the upper end of the connecting plate (15).

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