EC energy-saving fan

Abstract

The utility model discloses an EC energy-saving fan which comprises an outer rotor motor, an installation shell, a power connection circuit board, a power supply wire, a supporting plate, a middle connecting frame, a fan installation base and an impeller. The outer rotor motor comprises a rotating disc, an inner stator magnetic pole, a permanent magnet magnetic pole, a rotating shaft head, a first ball bearing and an outer rotating cover, one end of the rotating shaft head is connected with the rotating disc, the inner stator magnetic pole is installed on the rotating disc, the permanent magnet magnetic pole surrounds the inner stator magnetic pole, and the outer rotating cover surrounds the permanent magnet magnetic pole and the inner stator magnetic pole. A first ball bearing is mounted in a gap between the outer rotating cover and the rotating shaft head, and the outer rotating cover is an output part of the outer rotor motor; the rotating shaft head extends out of the rotating cover and is mounted on the mounting shell. The EC energy-saving fan solves the problem that a motor and an impeller need to be connected through a coupler due to the fact that the motor is installed outside a shell in the prior art.

Description

Technical Field

[0001] The utility model relates to a fan, in particular to an EC energy-saving fan. Background Art

[0002] like Figure 1 As shown, in the prior art, the fan equipment includes: a motor 1, a coupling 2, a housing 3 and an impeller 4, wherein a rotatable impeller 4 is installed in the housing 3, and the motor 1 is installed outside the housing 3, and the output shaft of the motor 1 is connected to the impeller 4 in the housing 3 through the coupling 2, so that the impeller 4 can rotate under the drive of the motor 1.

[0003] Although the motor 1 of the above-mentioned fan device can drive the impeller 4 to rotate, the fan device still has the following disadvantages:

[0004] First, since the motor 1 is installed outside the housing 3, the output shaft of the motor 1 and the impeller 4 can only be connected through the coupling 2, which increases the size of the entire fan and occupies a large area;

[0005] Second, since the output shaft of the motor 1 needs to be connected to the impeller 4 located in the housing 3 through the coupling 2, the intermediate connecting component (coupling 2) is too long. When driving the impeller 4 to rotate, it is also necessary to drive the coupling 2 to rotate, resulting in high energy consumption and being unfavorable to environmental protection. Utility Model Content

[0006] The utility model provides an EC energy-saving fan, which solves the problem in the prior art that the motor and the impeller need to be connected via a coupling because the motor is installed outside the housing.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] The utility model discloses an EC energy-saving fan, comprising: an outer rotor motor, a mounting shell, a power circuit board, a power connection, a support plate, an intermediate connecting frame, a fan mounting seat and an impeller; the outer rotor motor comprises: a rotating disk, an inner stator magnetic pole, a permanent magnet magnetic pole, a rotating shaft head, a first ball bearing and an outer rotating cover, one end of the rotating shaft head is connected to the rotating disk, the inner stator magnetic pole is mounted on the rotating disk, the inner stator magnetic pole is surrounded by a permanent magnet magnetic pole, the permanent magnet magnetic pole and the inner stator magnetic pole are surrounded by an outer rotating cover, the first ball bearing is mounted in the gap between the outer rotating cover and the rotating shaft head, the outer rotating The cover is the output part of the outer rotor motor; the shaft head extends out of the rotating cover and is installed on the mounting shell, a power connection circuit board electrically connected to the outer rotor motor is installed in the mounting shell, the power connection circuit board is connected to the power connection wiring, and the power connection wiring is used to connect to the external mains; a support plate is installed on the mounting shell, the support plate is connected to the fan mounting seat through an intermediate connecting frame, the intermediate connecting frame surrounds the outer rotor motor and the impeller, the outer rotating cover of the outer rotor motor is fixedly connected to one end of the impeller, and the other end of the impeller is rotatably mounted on the fan mounting seat; the fan mounting seat is provided with an air outlet aligned with the impeller.

[0009] Preferably, a mounting ear protrudes from the outside of the mounting shell, and the mounting ear is used to connect to the support plate.

[0010] Preferably, the intermediate connecting frame includes: a hook frame and an end connecting block, the hook frame is an n-type structure, the bent end of the hook frame is bent toward the direction of the rotation axis of the outer rotor motor to form a bent hook, and the end of the hook frame away from the bent hook is installed on the fan mounting seat through the end connecting block.

[0011] Preferably, the end of the hook frame away from the bending hook is bent to form a protruding block, the protruding block hooks the end connecting block from the side away from the bending hook, and the end connecting block is mounted on the fan mounting seat by screws.

[0012] Preferably, the fan mounting seat is a cover-like structure, the edge of the fan mounting seat protrudes to form a first positioning edge, the edge of the end connecting block is bent toward the mounting shell to form a second positioning edge, and two second positioning edges are arranged at the corners of each end connecting block, and the second positioning edge in each end connecting block is respectively tightly attached to two mutually perpendicular first positioning edges.

[0013] Preferably, the fan mounting seat is protruded to form a surrounding ring, which surrounds the side of the impeller away from the outer rotor motor, and a second ball bearing is installed between the end of the impeller and the surrounding ring.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] In the present application, the method of connecting the motor output shaft to the impeller through a coupling in the prior art is no longer used. An outer rotor motor is used. The output part of the outer rotor motor is the outer rotor cover, which is also called the outer rotor. The outer rotor cover is arranged outside the inner stator poles and the permanent magnet poles in the entire outer rotor motor, and it itself has a highly integrated effect. The present application uses the outer rotor cover in the highly integrated outer rotor motor to directly connect the impeller, and at the same time, a mounting shell is arranged at the end. One part is to provide an installation foundation for the outer rotor motor, and the other part is to realize the foundation for pulling the support plate and the intermediate connecting frame to the fan mounting seat. The entire layout can reduce the length of the impeller to the motor part in the fan and reduce the volume of the entire fan. At the same time, the intermediate connecting frame bypasses the impeller and the outer rotor motor, and will not affect the connection between the impeller and the outer rotor motor, thereby ensuring the connection between the outer rotor motor and the fan mounting seat. Since the outer rotor motor and the impeller no longer need to drive the coupling to rotate, the energy consumed in the rotation drive process is reduced, achieving an energy-saving effect.

[0016] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a fan device in the prior art.

[0018] Figure 2 This is a schematic diagram of the structure of the EC energy-saving fan in this application.

[0019] Figure 3 for Figure 2 Schematic diagram of the structure of the inner and outer rotor motor after being cut open.

[0020] Figure 4 for Figure 2 Enlarged view of point A in the middle.

[0021] Figure numerals: motor 1, coupling 2, housing 3, impeller 4, outer rotor motor 5, rotating disk 51, inner stator pole 52, permanent magnet pole 53, shaft head 54, first ball bearing 55, outer rotating cover 56, mounting housing 6, mounting ear 60, power connection 7, support plate 8, intermediate connecting frame 9, hook frame 91, bending hook 910, end connecting block 92, second positioning edge 920, fan mounting base 10, air outlet 100, first positioning edge 101. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and functions achieved by the present invention clearer and easier to understand, the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0023] like Figures 2 to 4 As shown, the utility model discloses an EC energy-saving fan (EC (Electrical Commutation, electronic commutation) fan refers to a fan of a permanent magnet synchronous motor 1 driven by an electronic controller, so a power circuit board is required), including: an outer rotor motor 5, a mounting shell 6, a power circuit board (not shown in the figure), a power connection 7, a support plate 8, an intermediate connecting frame 9, a fan mounting seat 10 and an impeller 4; the outer rotor motor 5 includes: a rotating disk 51, an inner stator pole 52, a permanent magnet pole 53, a rotating shaft head 54, a first ball bearing 55 and an outer rotating cover 56 (also called: outer rotor), one end of the rotating shaft head 54 is connected to the rotating disk 51, the inner stator pole 52 is installed on the rotating disk 51, the inner stator pole 52 is surrounded by a permanent magnet pole 53, the permanent magnet pole 53 and the inner stator pole 52 are surrounded by an outer rotating cover, and the outer rotating cover is connected to the rotating disk 51. A first ball bearing 55 is installed in the gap between the shaft heads 54, and the outer rotating cover is the output part of the outer rotor motor 5; the shaft head 54 is installed on the mounting shell 6 after extending out of the rotating cover, and a power connection circuit board electrically connected to the outer rotor motor 5 is installed in the mounting shell 6, and a power connection circuit board is connected to the power connection circuit board. The power connection 7 is used to connect to the external mains; a support plate 8 is installed on the mounting shell 6, and the support plate 8 is connected to a fan mounting seat 10 through an intermediate connecting frame 9, and the intermediate connecting frame 9 surrounds the outer rotor motor 5 and the impeller 4. The outer rotating cover of the outer rotor motor 5 is fixedly connected to one end of the impeller 4, and the other end of the impeller 4 can be rotatably mounted on the fan mounting seat 10; the fan mounting seat 10 is provided with an air outlet 100 aligned with the impeller 4.

[0024] The mounting shell 6 has a mounting ear 60 protruding from the outside, and the mounting ear 60 is used to connect the support plate 8. The mounting ear 60 is the basis for mounting the support plate 8.

[0025] The intermediate connecting frame 9 includes: a hook frame 91 and an end connecting block 92. The hook frame 91 is an n-type structure. The bent end of the hook frame 91 is bent toward the direction of the rotation axis of the outer rotor motor 5 to form a bending hook 910. The end of the hook frame 91 away from the bending hook 910 is installed on the fan mounting seat 10 through the end connecting block 92. The frame is a dry frame structure with a simple structure. It is set as an n-type hook frame 91 with a bending hook 910. When the hook frame 91 is pressed on the support plate 8, the hook frame 91 is pulled, so that the support plate 8 has a tendency to move toward the fan mounting seat 10. The support plate 8 is located between the mounting ear 60 and the bending hook 910. In this way, the mounting housing 6, the outer rotor fan and the impeller 4 can be pressed on the fan mounting seat 10. When assembling, the intermediate connecting frame 9 can be adjusted to install the impeller 4 connected to the outer rotor fan and the mounting housing 6 on the fan mounting seat 10, thereby improving the assembly efficiency of the entire fan and improving the production efficiency.

[0026] The end of the hook frame 91 away from the bending hook 910 is bent to form a protruding block (not shown in the figure), and the protruding block hooks the end connecting block 92 from the side away from the bending hook 910, and the end connecting block 92 is installed on the fan mounting seat 10 by screws. When the end connecting block 92 is pulled and pressed on the fan mounting seat 10, the protruding block restricts the frame from being separated from the end connecting block 92, so that the hook frame 91 can be installed on the fan mounting seat 10 only through the end connecting block 92. When the end connecting block 92 is sleeved outside the hook frame 91, it is bent to form a protruding block.

[0027] The fan mounting seat 10 is a cover-shaped structure, the edge of the fan mounting seat 10 protrudes to form a first positioning edge 101, the edge of the end connection block 92 is bent toward the mounting shell 6 to form a second positioning edge 920, and two second positioning edges 920 are provided at the corners of each end connection block 92, and the second positioning edge 920 in each end connection block 92 is respectively in close contact with two mutually perpendicular first positioning edges 101. The first positioning edge 101 and the second positioning edge 920 have the function of positioning the end connection block 92 on the fan mounting seat 10, avoiding the inconvenience of positioning the end connection block 92 when the end connection block 92 is connected to the fan mounting seat 10 with screws, improving the relative position of the end connection block 92 when it is connected to the fan mounting seat 10, avoiding the cumbersome steps when the end connection block 92 is installed with the fan mounting seat 10, simplifying the installation steps, and improving the installation efficiency.

[0028] The fan mounting seat 10 is protruded to form a surrounding ring, which surrounds the impeller 4 on the side away from the outer rotor motor 5, and a second ball bearing is installed between the end of the impeller 4 and the surrounding ring. The guide impeller 4 can rotate smoothly relative to the fan mounting seat 10.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An EC energy-saving fan, characterized in that: include: An outer rotor motor (5), a mounting housing (6), a power circuit board, a power connection (7), a support plate (8), an intermediate connecting frame (9), a fan mounting seat (10) and an impeller (4); The outer rotor motor (5) comprises: a rotating disk (51), an inner stator magnetic pole (52), a permanent magnet magnetic pole (53), a rotating shaft head (54), a first ball bearing (55) and an outer rotating cover (56); one end of the rotating shaft head (54) is connected to the rotating disk (51); the inner stator magnetic pole (52) is mounted on the rotating disk (51); the inner stator magnetic pole (52) is surrounded by a permanent magnet magnetic pole (53); the outer rotating cover is surrounded by the permanent magnet magnetic pole (53) and the inner stator magnetic pole (52); the first ball bearing (55) is mounted in the gap between the outer rotating cover and the rotating shaft head (54); the outer rotating cover is the output part of the outer rotor motor (5); The rotating shaft head (54) extends out of the rotating cover and is mounted on the mounting shell (6). A power connection circuit board electrically connected to the outer rotor motor (5) is mounted in the mounting shell (6). A power connection wire (7) is connected to the power connection circuit board. The power connection wire (7) is used to connect to external mains electricity. A support plate (8) is mounted on the mounting housing (6); the support plate (8) is connected to a fan mounting seat (10) via an intermediate connecting frame (9); the intermediate connecting frame (9) surrounds the outer rotor motor (5) and the impeller (4); an outer rotating cover of the outer rotor motor (5) is fixedly connected to one end of the impeller (4); and the other end of the impeller (4) is rotatably mounted on the fan mounting seat (10); The fan mounting seat (10) is provided with an air outlet (100) aligned with the impeller (4).

2. An EC energy-saving fan according to claim 1, characterized in that: A mounting ear (60) protrudes from the outside of the mounting shell (6), and the mounting ear (60) is used to connect to the support plate (8).

3. The EC energy-saving fan according to claim 2, characterized in that: The intermediate connecting frame (9) comprises: a hook frame (91) and an end connecting block (92); the hook frame (91) is an n-shaped structure; the bent end of the hook frame (91) is bent toward the direction of the rotation axis of the outer rotor motor (5) to form a bent hook (910); the end of the hook frame (91) away from the bent hook (910) is mounted on the fan mounting seat (10) through the end connecting block (92).

4. The EC energy-saving fan according to claim 3, characterized in that: The end of the hook frame (91) away from the bending hook (910) is bent to form a protruding block, and the protruding block hooks the end connecting block (92) from the side away from the bending hook (910), and the end connecting block (92) is installed on the fan mounting seat (10) by screws.

5. The EC energy-saving fan according to claim 4, characterized in that: The fan mounting seat (10) is a cover-shaped structure. The edge of the fan mounting seat (10) protrudes to form a first positioning edge (101). The edge of the end connecting block (92) is bent toward the mounting shell (6) to form a second positioning edge (920). Two second positioning edges (920) are arranged at the corners of each end connecting block (92). The second positioning edge (920) in each end connecting block (92) is respectively in close contact with two mutually perpendicular first positioning edges (101).

6. An EC energy-saving fan according to any one of claims 1 to 5, characterized in that: The fan mounting seat (10) is protruded to form a surrounding ring, which surrounds the side of the impeller (4) away from the outer rotor motor (5), and a second ball bearing is installed between the end of the impeller (4) and the surrounding ring.

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