High-efficiency fan structure

Abstract

The utility model relates to the technical field of fans, and discloses a high-efficiency fan structure which comprises a fan body, a fan cover is arranged at the upper end of the fan body, an air inlet is formed in the upper end of the fan cover, a movable impeller arranged in the fan body is arranged at the lower end of the air inlet, and an air opening ring is arranged at the upper end of the movable impeller. The position of the tuyere ring corresponds to the position of the air inlet, a stator iron core is arranged in the fan body, and the stator iron core is formed by stacking and riveting a plurality of sets of chips after being stacked. The sealing ring is arranged at the bottom of the air inlet and is annular, and the sealing ring is in contact with the upper end opening of the tuyere ring and does not leak air; the thickness of each chip does not exceed 0.2 mm, and the magnetic field characteristic is strong. The sealing ring is arranged at the air inlet of the fan cover and makes contact with the air inlet of the movable impeller, air leakage is prevented, and the efficiency of the fan is improved. And the thickness of the iron core does not exceed 0.2 mm, the magnetic field characteristic is strong, the magnetic loss is less, and the fan efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a high-efficiency fan structure used in a vacuum cleaner. Background Art

[0002] As a cleaning device, the vacuum cleaner is equipped with a fan inside, which creates negative pressure at the suction port to form suction.

[0003] The fan structure is generally equipped with a brushless motor, a moving impeller, a stator impeller, a hood, etc. The hood is placed above the moving impeller. After the moving impeller is rotated by the motor, suction is generated at the air outlet of the hood. After the air flow enters from the air outlet of the hood, it enters from the air outlet of the moving impeller and is transmitted to the stator impeller. However, there is a gap between the existing moving impeller air inlet and the air inlet of the hood. Part of the air flow escapes from the outside of the moving impeller, and the sealing is poor, resulting in low efficiency of the fan. In addition, the sheet thickness of the stator iron core of the existing fan is greater than 0.2mm, which further leads to low efficiency of the fan. Utility Model Content

[0004] Based on this, it is necessary to provide a high-efficiency fan structure to address the problem of low fan efficiency.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a high-efficiency fan structure, comprising a fan body, a wind cover is provided at the upper end of the fan body, an air inlet is provided at the upper end of the wind cover, a moving impeller is provided at the lower end of the air inlet and is arranged in the fan body, an air inlet ring is provided at the upper end of the moving impeller, the position of the air inlet ring corresponds to the air inlet, a stator core is provided in the fan body, and the stator core is formed by stacking and riveting multiple groups of chips.

[0006] A sealing ring is provided at the bottom of the air inlet and is annular in shape. The sealing ring contacts the upper end of the air inlet ring to prevent air leakage.

[0007] The thickness of each chip does not exceed 0.2 mm, and the magnetic field characteristics are strong.

[0008] In a preferred example, the present invention can be further configured as follows: a mounting groove is provided at the bottom of the air inlet and is placed at the top end of the inner portion of the air hood, and the sealing ring is fixedly arranged in the mounting groove.

[0009] In a preferred example, the present invention can be further configured as follows: the sealing ring is made of EVA material.

[0010] In summary, the present invention has at least one of the following beneficial technical effects:

[0011] By arranging a sealing ring at the air inlet of the fan cover so as to contact the air inlet of the impeller, air leakage is prevented and the efficiency of the fan is improved.

[0012] The core thickness does not exceed 0.2mm, with strong magnetic field characteristics and low magnetic loss, further improving the efficiency of the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the splitting of the blower cover and the blower body of the utility model;

[0016] Figure 3 This is an assembly diagram of the stroke cover and sealing ring of the utility model;

[0017] Figure 4 This is a schematic diagram of the disassembly of the stroke cover and the sealing ring of the utility model;

[0018] Figure 5 This is an assembly drawing of the sealing ring and the impeller in the utility model.

[0019] In the attached figure:

[0020] 1. Fan body; 2. Fan cover; 21. Sealing ring; 22. Mounting slot; 3. Air inlet; 4. Impeller; 41. Air outlet ring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] exist Figure 1-5 In the embodiment shown, the utility model provides a technical solution: a high-efficiency fan structure, including a fan body 1, a wind cover 2 is provided at the upper end of the fan body 1, an air inlet 3 is provided at the upper end of the wind cover 2, a moving impeller 4 is provided at the lower end of the air inlet 3 and is arranged in the fan body 1, an air inlet ring 41 is provided at the upper end of the moving impeller 4, the position of the air inlet ring 41 corresponds to the air inlet 3, a stator core is provided in the fan body 1, and the stator core is formed by stacking and riveting multiple groups of chips. The difference from the prior art is that the thickness of each chip does not exceed 0.2 mm.

[0023] The difference from the existing fan structure is that a sealing ring 21 is added: it is made of EVA material, the sealing ring 21 is arranged at the bottom of the air inlet 3, and is annular. The sealing ring 21 contacts the upper end of the air inlet ring 41. A mounting groove 22 is opened at the bottom of the air inlet 3 and is placed at the top end of the wind cover 2. The sealing ring 21 is fixed in the mounting groove 22 by snapping or gluing. The wind cover 2 is formed as a whole by stamping, and the port of the air inlet 3 is bent to form the mounting groove 22.

[0024] The specific working principle of the present invention will be explained in detail below: the rotor inside the fan body 1 drives the impeller 4 to rotate, and the air outlet ring 41 generates suction to suck in the external air flow from the air inlet 3. Since the air outlet ring 41 is in contact with the sealing ring 21 at the bottom of the air inlet 3, the air flow completely enters the impeller 4 and then enters the stator, without air leakage, thereby improving the efficiency of the fan.

[0025] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency fan structure, comprising a fan body (1), a fan cover (2) provided at the upper end of the fan body (1), an air inlet (3) provided at the upper end of the fan cover (2), a moving impeller (4) disposed in the fan body (1) at the lower end of the air inlet (3), an air inlet ring (41) provided at the upper end of the moving impeller (4), the position of the air inlet ring (41) corresponding to the air inlet (3), a stator core provided in the fan body (1), the stator core being formed by stacking and riveting a plurality of laminations, and characterized in that: A sealing ring (21), the sealing ring (21) is arranged at the bottom of the air inlet (3) and is annular in shape, and the sealing ring (21) is in contact with the upper end of the air inlet ring (41); The thickness of each chip does not exceed 0.2 mm.

2. A high-efficiency fan structure according to claim 1, characterized in that: The bottom of the air inlet (3) is provided with a mounting groove (22) disposed at the top end of the inner portion of the air cover (2), and the sealing ring (21) is fixedly disposed in the mounting groove (22).

3. The high-efficiency fan structure according to claim 1, characterized in that: The sealing ring (21) is made of EVA material.

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