Movable impeller and fan provided with same

Abstract

The utility model relates to a moving impeller and a fan equipped with the same, the moving impeller comprises an upper piece, a lower piece and a middle blade, the middle blade is respectively riveted with the upper piece and the lower piece, and the projection area of the upper piece is larger than that of the lower piece; the upper piece comprises upper piece bodies and an auxiliary body, and the upper piece bodies are arranged on the auxiliary body at equal intervals. The movable impeller is high in adaptability, air loss can be reduced, and the smoothness of airflow in the flowing process is improved; in addition, the fan adopting the impeller can effectively reduce noise.

Description

Technical Field

[0001] The utility model relates to the technical field of motor accessories, in particular to a moving impeller and a fan equipped with the moving impeller. Background Art

[0002] The existing motor includes an impeller cover, a moving impeller arranged in the impeller cover, and a fixed impeller arranged coaxially with the moving impeller. When working, the moving impeller rotates, and the airflow is sucked into the moving impeller from the air inlet of the impeller cover, and after being pressurized by the moving impeller, it is guided into the fixed impeller through the impeller cover and blown out to the designated position along the air outlet of the fixed impeller. In actual use, it is found that the efficiency of existing fans is generally low, which is mainly due to the poor smoothness of the airflow during the flow process. Utility Model Content

[0003] To this end, the technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a moving impeller and a fan equipped with the moving impeller. Since the upper piece size of the moving impeller is larger than the lower piece size, the inhaled wind can be pressed backward as much as possible, reducing air loss and avoiding low air volume and noise caused by wind vibration inside the fan.

[0004] In the first aspect, in order to solve the above-mentioned technical problems, the utility model provides a moving impeller, comprising an upper piece, a lower piece and an intermediate blade fixed between the upper piece and the lower piece, the upper piece and the lower piece are coaxially arranged, the projection area of ​​the upper piece is larger than the projection area of ​​the lower piece; the intermediate blade comprises a plurality of pieces, all of which are riveted to the upper piece and the lower piece, and the intermediate blades are distributed in a circular array with the center of the lower piece as the circle point.

[0005] In one embodiment of the present invention, the upper piece includes an upper piece body and an auxiliary body, and the upper piece body is arranged on the inner side of the auxiliary body.

[0006] In one embodiment of the present invention, the auxiliary body is in a ring shape.

[0007] In one embodiment of the utility model, the surface of the auxiliary body is a plane or a curved surface, and the curved surface bulges upward to form a wind guide surface.

[0008] In one embodiment of the present invention, the upper sheet body and the auxiliary body are integrally formed.

[0009] In one embodiment of the present invention, the upper sheet body and the auxiliary body are riveted.

[0010] In a second aspect, to solve the above-mentioned problem, a fan comprises the movable impeller and the stator impeller, an impeller cover, and a drive motor as described in the first aspect, wherein a motor housing is arranged on the outside of the drive motor; the stator impeller is connected to the motor housing by a fastener; the output shaft of the drive motor passes through the stator impeller and is connected to the movable impeller, the impeller cover and the stator impeller are pressed together, the movable impeller is wrapped in the cavity of the impeller cover, the impeller cover is provided with an air inlet, and the air inlet, the movable impeller and the stator impeller form an air circulation channel.

[0011] In one embodiment of the utility model, the stator impeller includes a stator impeller housing, the stator impeller housing is fixedly connected to the motor housing via fasteners, a plurality of air guide blades are arranged on the stator impeller housing, and an air outlet is formed between every two air guide blades.

[0012] In one embodiment of the utility model, the motor housing comprises an upper motor housing and a lower motor housing, the drive motor is arranged in the upper motor housing, and the lower motor housing is provided with heat dissipation fins. The heat dissipation fins are used to increase the contact area between the motor housing and the air and enhance the heat dissipation effect.

[0013] In one embodiment of the utility model, there is a cavity between the surface of the impeller and the inner surface of the impeller cover, and the inner wall of the impeller cover is provided with a sealing ring to prevent wind from flowing out from the gap between the impeller cover and the impeller.

[0014] The above technical solution of the utility model has the following advantages compared with the prior art:

[0015] (1) The impeller and the fan equipped with the impeller described in the utility model can push the inhaled wind backwards as much as possible, because the size of the upper blade of the impeller is larger than the size of the lower blade, thereby reducing air loss and avoiding the situation of low air volume and wind vibration inside the fan to generate noise.

[0016] (2) The utility model discloses a moving impeller and a fan equipped with the moving impeller, wherein the upper plate comprises an upper plate body and an auxiliary body, wherein the upper plate body and the auxiliary body are integrally formed or riveted together, thereby reducing the difficulty of processing and enabling different auxiliary bodies to be replaced according to actual needs to improve the fluidity of wind. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to the specific embodiments of the utility model in combination with the accompanying drawings, wherein

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the impeller in the first embodiment of the utility model;

[0019] Figure 2 yes Figure 1 The front view structural diagram of the impeller shown;

[0020] Figure 3 It is a structural schematic diagram of a fan according to Embodiment 2 of the present utility model;

[0021] Figure 4 yes Figure 3 A schematic diagram of the partial structure of the fan after removing the impeller cover;

[0022] Figure 5 yes Figure 3 A schematic structural diagram of a second housing of the fan shown;

[0023] Figure 6 is a cross-sectional view of the fan of the second embodiment of the utility model;

[0024] Explanation of the reference numerals in the specification: 1. upper piece; 2. lower piece; 3. middle blade; 11. upper piece body; 12. auxiliary body; 4. motor lower shell; 5. impeller cover; 51. air inlet; 6. motor upper shell; 7. fixed impeller; 71. air outlet; 72. air guide blade; 8. wire; 9. sealing ring. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0026] Embodiment 1

[0027] Reference Figure 1-2 As shown, the utility model provides a moving impeller, comprising an upper piece 1, a lower piece 2 and a middle blade 3 arranged between the upper piece 1 and the lower piece 2, the upper piece 1 and the lower piece 2 are coaxially arranged, a bearing hole is opened in the middle of the lower piece 2, and a ventilation hole with a radius larger than the bearing hole is opened on the upper piece 1.

[0028] The axial projection area of ​​the upper piece 1 is larger than the axial projection area of ​​the lower piece 2; the intermediate blades 3 include a plurality of blades, all of which are riveted to the upper piece 1 and the lower piece 2, and the intermediate blades 3 are distributed in a circular array with the center of the lower piece 2 as the circle point. The number of the intermediate blades 3 is set to 6-8, and by reducing the number of the intermediate blades 3, the loss of air can be reduced, which helps to increase the air volume.

[0029] Based on the impeller of the above structure, since the size of the upper piece 1 is larger than that of the lower piece 2, the inhaled wind can be pressed backward as much as possible, reducing air loss and avoiding low air volume and wind vibration inside the fan to generate noise.

[0030] In this embodiment, the upper sheet 1 includes an upper sheet body 11 and an auxiliary body 12 . The auxiliary body 12 is arranged outside the upper sheet body 11 , and the inner diameter of the auxiliary body 12 is smaller than or equal to the outer diameter of the upper sheet body 11 .

[0031] Based on the impeller of the above structure, the upper sheet body 11 and the auxiliary body 12 are integrally formed or riveted together, which reduces the difficulty of processing. At this time, the upper sheet body 11 only needs to be designed to be the same as the lower sheet 2. At the same time, different auxiliary bodies 12 can be replaced according to actual needs to improve the fluidity and guidance of the wind. The upper sheet body 11 and the auxiliary body 12 are set. On the one hand, it can reduce the processing procedures and facilitate processing. When processing the upper sheet 1 and the lower sheet 2, only the same size needs to be set. On the other hand, the auxiliary body 12 can be replaced according to different size requirements, which provides the applicability of the impeller.

[0032] In this embodiment, the auxiliary body 12 is in a ring shape.

[0033] Preferably, the surface of the auxiliary body 12 is a flat surface or a curved surface.

[0034] In addition, the upper sheet body 11 and the auxiliary body 12 are integrally formed or riveted. In this embodiment, the upper sheet body 11 and the auxiliary body 12 are riveted to facilitate disassembly or installation of the auxiliary body 12 and the upper sheet body 11.

[0035] Embodiment 2

[0036] like Figure 3-6 As shown, the utility model provides a fan, including the movable impeller and the fixed impeller 7, the impeller cover 5 and the driving motor described in the first embodiment, wherein a motor housing is arranged on the outer side of the driving motor; the fixed impeller 7 is connected to the motor housing by a fastener, and in the present embodiment, the two are connected by bolt connection; the output shaft of the driving motor 6 passes through the fixed impeller 7 and is fixedly connected to the movable impeller, the impeller cover 5 and the fixed impeller 7 are pressed together, the movable impeller is wrapped in the cavity of the impeller cover 5, and the impeller cover 5 is provided with an air inlet 51, and the air inlet 51, the movable impeller and the fixed impeller 7 form an air circulation channel.

[0037] At the same time, in this embodiment, the projected area of ​​the upper piece 1 of the impeller is larger than the projected area of ​​the lower piece 2, so that the wind flows more toward the stator impeller, and the wind flowing away from the stator impeller will be blocked by the upper piece 1 of the impeller, thereby reducing the loss of inhaled air and causing low air volume.

[0038] In this embodiment, the stator impeller 7 includes a stator impeller housing, and the stator impeller housing is fixedly connected to the motor housing through fasteners. A plurality of air guide blades 72 are arranged on the stator impeller housing, and an air outlet 71 is provided between every two air guide blades 72 .

[0039] Furthermore, the motor housing includes a motor upper housing 6 and a motor lower housing 4 fixedly mounted together, the drive motor is arranged in the motor upper housing 6, and the motor lower housing 4 is provided with heat dissipation fins 41. In this embodiment, the motor upper housing 6 does not completely cover the internal parts, which can make the heat dissipation effect of the fan better; the heat dissipation fins 41 are used to increase the contact area between the motor housing and the air, which can further enhance the heat dissipation effect.

[0040] Furthermore, there is a cavity between the surface of the impeller and the inner surface of the impeller cover 5, so that the wind can flow.

[0041] At the same time, there is a gap between the upper plate 1 of the impeller and the air inlet 51 of the impeller cover 5, so a circle of sealing ring 9 is provided on the inner wall of the impeller cover 5 and at the air inlet 51, which is used to reduce the wind outflow from the gap between the impeller cover 5 and the impeller, which helps to reduce the wind loss of the fan. At the same time, a groove is provided on the sealing ring 9, and part of the upper plate 1 of the impeller is rotatably arranged in the groove to prevent direct friction between the upper plate 1 of the impeller and the sealing ring 9.

[0042] When in use, the driving motor is powered through the wire 8, the impeller rotates, the impeller sucks air from the air inlet 51 of the impeller cover 5 and blows it out through the air outlet 71 of the fixed impeller 7. In actual application, the size of the impeller cover 5 can be adjusted to ensure that the sucked air can flow into the air duct as much as possible.

[0043] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.

Claims

1. A moving impeller, characterized in that: It includes an upper piece, a lower piece and a middle blade fixed between the upper piece and the lower piece, the upper piece and the lower piece are coaxially arranged, the projection area of ​​the upper piece is larger than the projection area of ​​the lower piece; the middle blade includes a plurality of pieces, all of which are riveted to the upper piece and the lower piece, and the middle blades are distributed in a circular array with the center of the lower piece as the circle point.

2. The impeller according to claim 1, characterized in that: The upper sheet comprises an upper sheet body and an auxiliary body, and the upper sheet body is arranged on the inner side of the auxiliary body.

3. The impeller according to claim 2, characterized in that: The auxiliary body is in a ring shape.

4. The impeller according to claim 3, characterized in that: The surface of the auxiliary body is a plane or a curved surface.

5. The impeller according to claim 2, characterized in that: The upper sheet body and the auxiliary body are integrally formed.

6. The impeller according to claim 2, characterized in that: The upper sheet body is riveted to the auxiliary body.

7. A fan, characterized in that: It comprises a moving impeller as claimed in any one of claims 1 to 6, a fixed impeller, an impeller cover, and a driving motor, wherein a motor housing is arranged on the outer side of the driving motor; The fixed impeller is connected to the motor housing through fasteners; the output shaft of the drive motor passes through the fixed impeller and is connected to the movable impeller, the impeller cover and the fixed impeller are pressed together, the movable impeller is wrapped in the cavity of the impeller cover, and an air inlet is provided on the impeller cover, and the air inlet, the movable impeller and the fixed impeller form an air circulation channel.

8. A fan according to claim 7, characterized in that: The stator impeller comprises a stator impeller housing, the stator impeller housing is fixedly connected to the motor housing via fasteners, a plurality of air guide blades are arranged on the stator impeller housing, and an air outlet is formed between every two air guide blades.

9. A fan according to claim 7, characterized in that: The motor housing comprises an upper motor housing and a lower motor housing, the drive motor is arranged in the upper motor housing, and the lower motor housing is provided with heat dissipation fins.

10. A fan according to claim 7, characterized in that: There is a cavity between the surface of the impeller and the inner surface of the impeller cover. The inner wall of the impeller cover is provided with a sealing ring to prevent wind from flowing out from the gap between the impeller cover and the impeller.

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