CN108105153B

CN108105153B - Fan of blade subassembly and applied this blade subassembly

Info

Publication number: CN108105153B
Application number: CN201711341359.5A
Authority: CN
Inventors: 吴兆堂
Original assignee: Fans Tech Electric Co ltd
Current assignee: Fans Tech Electric Co ltd
Priority date: 2017-12-14
Filing date: 2017-12-14
Publication date: 2020-07-31
Anticipated expiration: 2037-12-14
Also published as: CN108105153A

Abstract

The invention relates to a fan which comprises a rack, a driving module and a blade assembly, wherein the driving module is arranged at the edge of the rack, the blade assembly is arranged in the middle of the rack and is matched and fixed with a cylindrical ball bearing at the center of the rack, and the blade assembly comprises a blade hub, a plurality of blades, an outer blade cylinder and a magnet. A plurality of blades surround the blade hub and are fixedly connected thereto. The outer cylinder of the blade is arranged at the periphery of the blade, surrounds the blade and is fixedly connected with the blade. A plurality of magnets are arranged at equal intervals on the outer periphery of the outer cylinder of the blade. The fan removes a driving motor at the central position, removes inherent obstacles for a flow channel, and removes unnecessary resistance to the maximum extent.

Description

Fan of blade subassembly and applied this blade subassembly

Technical Field

The invention relates to the field of fan equipment, in particular to a blade assembly and a fan applying the same.

Background

In the existing fan, the energy for rotating the blades comes from the rotor of the motor. According to the lever principle, the larger the diameter of the blade is, the larger the stress is at the joint of the motor shaft, the blade and the rotor. In order to bear the torsion of the joint, the joint of the blade and the rotor is required to be made of a particularly tough material at present, and the diameter of a motor shaft is relatively large, so that the connection strength of the blade and the rotor can be ensured. If the diameter of the motor shaft is made large, the volume of the motor is inevitably increased. However, according to the fluid mechanics requirement, the motor needs to be made smaller, so that the fluid resistance of the air duct is reduced. When the connection strength of the blades and the rotor is ensured, how to make the volume of the motor smaller becomes a difficult problem which cannot be overcome in the field of the existing fan.

Disclosure of Invention

The present invention aims to overcome the above-mentioned deficiencies of the prior art and to provide a blade assembly. In order to solve the technical problem, the invention aims to realize that:

the utility model provides a blade subassembly, includes blade wheel hub and a plurality of blade, the blade centers on blade wheel hub and with blade wheel hub fixed connection, blade wheel hub is equipped with the through-hole along the axial, the material of blade is magnetic conduction or non-magnetic conduction material, the blade subassembly still includes the magnet, the magnet sets up the circumference edge of blade subassembly.

On the basis of the above scheme and as a preferable scheme of the scheme: the magnet may be provided on the blade, and the magnet may be provided on the lower surface of the blade at or near the tip of the blade.

On the basis of the above scheme and as a preferable scheme of the scheme: the blade assembly further comprises a blade outer cylinder, the blade outer cylinder surrounds the blade and is fixedly connected with the blade, and a plurality of magnets are arranged on the periphery of the blade outer cylinder at equal intervals.

On the basis of the above scheme and as a preferable scheme of the scheme: the magnets face outwards and are distributed in the same polarity.

On the basis of the above scheme and as a preferable scheme of the scheme: a drive magnet is provided at the blade hub.

The invention also provides a fan applying the blade assembly, which comprises the following components: the device comprises a rack and a driving module, wherein a central cavity is formed in the rack, a blade assembly is arranged in the central cavity, and the driving module is arranged around the central cavity.

On the basis of the above scheme and as a preferable scheme of the scheme: the driving module is a coil winding, and at least one coil winding can be arranged on the rack along the periphery of the central cavity.

On the basis of the above scheme and as a preferable scheme of the scheme: and a cylindrical roller bearing is arranged at the center of the central cavity and is matched and fixed with the through hole.

On the basis of the above scheme and as a preferable scheme of the scheme: the blade assembly is provided with a fixed ring, the fixed ring surrounds the blade and is fixedly connected with the blade, the center of the central cavity is provided with a cylindrical roller bearing, the outer ring of the roller bearing is fixedly connected with the side wall of the central cavity, and the inner ring of the roller bearing is fixedly connected with the fixed ring.

On the basis of the above scheme and as a preferable scheme of the scheme: the frame is of a frame structure, and the middle part of the frame is cylindrical.

Compared with the prior art, the invention has the outstanding and beneficial technical effects that:

1. the fan of the invention removes the driving motor at the central position, removes the inherent obstacles for the flow channel, removes unnecessary resistance to the maximum extent, and improves the air quantity of the fan.

2. The torsion required by the blade driving comes from the excircle of the blade, the larger the diameter is, the more beneficial the driving is, and special materials do not need to be found for overcoming huge contact stress.

3. The arrangement of the magnets in the traditional driving mode is N, S, N, S group distribution, the arrangement of the magnets in the invention is the same polarity distribution, and a magnetic flux loop does not need to be formed between the two magnets, so that the blades can be made of non-magnetic materials or magnetic materials.

Drawings

FIG. 1 is a front view of a blade assembly of the present invention;

FIG. 2 is a schematic view of the magnetic pole distribution of the vane assembly of the present invention;

FIG. 3 is a front view of the fan of the present invention;

FIG. 4 is a schematic perspective view of a fan according to the present invention;

fig. 5 is a schematic cross-sectional view of another embodiment of the present invention.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings.

Example 1:

referring to fig. 1, the present invention provides a blade assembly comprising a blade hub 101, a number of blades 102 and magnets 104. A number of blades 102 surround the blade hub 101 and are fixedly connected thereto. The vane outer cylinder 103 is disposed at the periphery of the vane 102, surrounds the vane 102, and is fixedly coupled to the vane 102. The magnets are disposed at a circumferential edge of the blade assembly.

In this embodiment, the blade assembly further includes a blade outer cylinder 103, and a plurality of magnets 104 are arranged at equal intervals on the outer periphery of the blade outer cylinder 103. As can be seen from fig. 1 and 4, the blade assembly 3 has a blade hub 101 in the middle, and since the middle is a hollow through hole, unnecessary resistance in the middle is removed, an inherent obstacle is removed for the flow passage, and resistance is reduced during the rotation of the blade.

Fig. 2 shows one of the distribution of the magnetic poles of the magnets 104 of the vane assembly of the present invention, i.e., the outward facing magnets are distributed with the same polarity. In this embodiment, the magnetic poles facing outward are all N poles, and the magnetic poles facing inward are all S poles. The advantage of this arrangement is that the magnets are arranged in N, S, N, S groups, and the arrangement of the invention does not need to form a magnetic flux loop between two magnets, and the material of the vane itself does not affect the distribution of the magnetic field, so the vane can use non-magnetic conductive material, and can also use magnetic conductive material, such as plastic, aluminum, wood, etc.

With continued reference to fig. 3 to 4, the present invention further provides a wind turbine applying the blade assembly, including a frame 1, a driving module 2 and a blade assembly 3. The frame 1 is a frame structure, and the middle part is cylindrical. The frame is provided with a central cavity 107, the blade assembly 3 is arranged in the central cavity 107, and the driving modules 2 are arranged around the central cavity 107.

In the present embodiment, a cylindrical roller bearing (not shown) is disposed at the center of the central cavity 107, and is fixed in cooperation with the through hole of the blade hub 101 at the middle of the blade assembly 3 to serve as a rotating bracket of the blade assembly 3. The driving module 2 is embodied as a coil winding, which is arranged around the central cavity 107. As coil windings of the drive module 2, at least one of the coil windings may be arranged on the frame 4 along the circumference of the central cavity 107. The more coil windings are provided, the greater the driving force.

In the actual use process, the coil winding generates a magnetic field, which generates driving force for a plurality of magnets arranged on the blade outer cylinder 103 of the blade assembly 3 and drives the blade 102 to rotate rapidly.

Example 2:

the present embodiment will be described only where different from the above-described embodiments, the present embodiment has several coil windings disposed at equal intervals on the blade outer cylinder 103 of the blade assembly 3, and several magnets 104 disposed at the edge of the frame 1 as the driving modules. The coil winding generates a magnetic field through wireless power supply and is matched with the magnet 104 to generate driving force to drive the blade assembly 3 to rotate rapidly.

Example 3:

the present embodiment is described only as being different from the above embodiments, the magnet 104 of the present embodiment is disposed on the blade 102, and the magnet 104 may be disposed on the lower surface of the blade 102 at or near the tip of the blade 102.

Example 4:

only the differences from the above embodiments are described in this embodiment, as shown in fig. 4, a fixing ring 105 is disposed on the blade assembly 3 of this embodiment, the fixing ring 105 surrounds the blade 102 and is fixedly connected with the blade 102, a cylindrical roller bearing (not shown) is disposed in the center of the central cavity 107, an outer ring of the roller bearing is fixedly connected with a side wall of the central cavity 107, and an inner ring of the roller bearing is fixedly connected with the fixing ring 105.

Example 5:

the present embodiment will be described only where different from the above-described embodiments, the center position of the housing 1 of the present embodiment is not provided with the cylindrical ball bearing. As shown in fig. 5, a fixing ring 105 is provided on the blade outer cylinder 103, the fixing ring 105 is a circular ring-shaped protrusion, a pair of balls 106 are circumferentially provided at the edge portion of the frame 1, and the fixing ring 105 is embedded in the balls 106, so that the balls 106 in the frame 1 perform a clamping fixing action on the fixing ring 105, thereby fixing the blade assembly 3 on the frame 1.

Example 6:

in the present embodiment, only the difference from the above-described embodiments is described, the blade hub of the present embodiment is provided with a driving magnet, and a magnetic field is generated between the driving magnet and the magnet on the blade 102 (the blade outer cylinder 103) by wireless power supply, so as to generate a driving force for the blade 102, and rotate the blade 102.

Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims

1. The utility model provides a fan, includes frame and drive module, its characterized in that: the fan further comprises a blade assembly; the rack is provided with a central cavity, the blade assembly is arranged in the central cavity, and the driving modules are arranged on the periphery of the central cavity; the blade assembly comprises a blade hub and a plurality of blades, the blades surround the blade hub and are fixedly connected with the blade hub, the blade hub is provided with a through hole along the axial direction, the blade assembly comprises magnets, and the magnets are arranged on the circumferential edge of the blade assembly; the blade assembly also comprises a blade outer cylinder, the blade outer cylinder surrounds the blade and is fixedly connected with the blade, and a plurality of magnets are arranged on the periphery of the blade outer cylinder at equal intervals; the magnets face outwards and are distributed in the same polarity; the blade outer cylinder is provided with a fixed ring which is a circular bulge, the edge part of the rack is provided with a pair of balls up and down in a surrounding way, and the fixed ring is embedded into the balls, so that the balls in the rack form a clamping and fixing effect on the fixed ring, and the blade assembly is fixed on the rack; the driving module is a coil winding, and at least one coil winding is arranged on the rack along the periphery of the central cavity.

2. The fan of claim 1, wherein: the magnet is arranged on the blade, and the magnet is arranged on the lower surface of the blade at or near the blade tip of the blade.

3. The fan of claim 1, wherein: a drive magnet is provided at the blade hub.

4. The fan of claim 1, wherein: and a cylindrical roller bearing is arranged at the center of the central cavity and is matched and fixed with the through hole.

5. The fan of claim 1, wherein: the blade assembly is provided with a fixed ring, the fixed ring surrounds the blade and is fixedly connected with the blade, the center of the central cavity is provided with a cylindrical roller bearing, the outer ring of the roller bearing is fixedly connected with the side wall of the central cavity, and the inner ring of the roller bearing is fixedly connected with the fixed ring.

6. The fan of claim 1, wherein: the frame is of a frame structure, and the middle part of the frame is cylindrical.