Impeller and motor

Abstract

The present invention relates to the field of motors, and discloses an impeller and a motor, wherein the impeller comprises: an upper fixed plate, on which an air guide hole is provided; a lower fixed plate, which is arranged coaxially with and opposite to the upper fixed plate along the axis of the air guide hole; and a plurality of blades, which are fixed between the upper fixed plate and the lower fixed plate, and is characterized in that: the upper fixed plate extends from the air guide hole to a direction away from the air guide hole, and a portion of the upper fixed plate is bent and extended in a direction away from the lower fixed plate to form an air guide tube, and the end face of the air guide tube is a cutting edge. Since the end face of the air guide tube is a cutting edge, the end face of the air guide tube can quickly cut into the sealing ring, and at this time, the contact surface between the sealing ring and the air guide tube is a relatively smooth surface, and the friction between the air guide tube and the sealing ring will be greatly reduced, thereby reducing the heat generated by the friction, reducing or preventing the sealing ring from melting, and further avoiding adhesion between the impeller and the sealing ring, thereby improving the working performance of the motor to which the impeller belongs.

Description

Technical Field

[0001] The invention relates to the field of motors, and in particular to an impeller and a motor. Background Art

[0002] In the field of motors, especially in the field of high-speed brushless motors, the sealing state of the air inlet of the fan is very critical. In the prior art, the inlet of the impeller is generally held against the sealing ring, and the inlet of the impeller is generally a plane. When the impeller rotates relative to the sealing ring, the inlet of the impeller rubs against the sealing ring, grinding the sealing ring into a rough surface. Since the contact surface of the sealing ring and the impeller is a rough surface, a large friction force is generated between the impeller and the sealing ring. After a long period of high-speed friction, the impeller will melt over a large area, resulting in adhesion between the impeller and the sealing ring. In particular, after the motor stops running and then starts again, the impeller and the sealing ring are adhered together, which greatly reduces the working performance of the motor to which the impeller belongs. Summary of the invention

[0003] The object of the present invention is to provide an impeller and a motor, so that the friction between the impeller and the sealing ring is reduced, thereby reducing the melting amount of the sealing ring, or preventing the sealing ring from melting, thereby reducing the adhesion between the impeller and the sealing ring.

[0004] In order to solve the above technical problems, an embodiment of the present invention provides an impeller, comprising:

[0005] The upper fixing plate is provided with air guide holes;

[0006] A lower fixing plate is arranged along the axis of the air guide hole, opposite to and coaxial with the upper fixing plate;

[0007] A plurality of blades are fixed between the upper fixing plate and the lower fixing plate, characterized in that:

[0008] The upper fixing plate extends from the air guide hole to a direction away from the air guide hole, and a portion of the upper fixing plate is bent and extended in a direction away from the lower fixing plate to form an air guide tube, and an end surface of the air guide tube is a cutting edge.

[0009] Compared with the prior art, the embodiment of the present invention has a cutting edge at the end face of the air guide tube. Therefore, when the impeller rotates relative to the sealing ring, the end face of the air guide tube can quickly cut into the sealing ring because its end face is a cutting edge. At this time, the contact surface between the sealing ring and the air guide tube is a relatively smooth surface. Compared with the prior art in which the end face of the air guide tube is a plane, which rubs the contact surface between the sealing ring and the impeller into a rough surface, the friction between the air guide tube and the sealing ring will be greatly reduced, thereby reducing the heat generated by the friction, reducing or preventing the sealing ring from melting, and further avoiding adhesion between the impeller and the sealing ring. Since the adhesion between the impeller and the sealing ring can be reduced or avoided, the working performance of the motor to which the impeller belongs can be improved.

[0010] In addition, the end surface of the air guide tube is provided with a plurality of cutouts. Since the end surface of the air guide tube is provided with a plurality of cutouts, the debris of the sealing ring cut off by the blade of the air guide tube can be discharged through these cutouts, so as to avoid the debris being stuck between the end surface of the air guide tube and the sealing ring, thereby increasing the friction between the air guide tube and the sealing ring.

[0011] In addition, each of the cutouts is equidistantly arranged around the axis of the air guide tube. Since each of the cutouts is equidistantly arranged around the axis of the air guide tube, the debris between the air guide tube and the sealing ring can be evenly discharged through each of the cutouts, thereby minimizing the amount of debris.

[0012] In addition, the incision is a U-shaped or V-shaped incision.

[0013] In addition, the direction of the cutting edge is parallel to the axis of the air guide tube.

[0014] In addition, the present invention further provides a motor, specifically, the motor comprises:

[0015] The housing comprises: an inner ring for surrounding an air inlet, and an outer ring opposite to the inner ring, wherein an annular receiving groove is formed between the inner ring and the outer ring;

[0016] A sealing ring, embedded in the annular groove;

[0017] The impeller as described above; the air guide tube of the impeller is partially embedded in the annular receiving groove, and the cutting edge of the air guide tube cuts into the sealing ring and fits tightly with the sealing ring.

[0018] Compared with the prior art, the embodiment of the present invention has a cutting edge at the end face of the air guide tube. Therefore, when the impeller rotates relative to the sealing ring, the end face of the air guide tube can quickly cut into the sealing ring because its end face is a cutting edge. At this time, the contact surface between the sealing ring and the air guide tube is a relatively smooth surface. Compared with the prior art in which the end face of the air guide tube is a plane, which rubs the contact surface between the sealing ring and the impeller into a rough surface, the friction between the air guide tube and the sealing ring will be greatly reduced, thereby reducing the heat generated by the friction, reducing or preventing the sealing ring from melting, and further avoiding adhesion between the impeller and the sealing ring. Since the adhesion between the impeller and the sealing ring can be reduced or avoided, the working performance of the motor to which the impeller belongs can be improved.

[0019] In addition, the sealing ring is a flexible sealing ring. Since the sealing ring is a flexible sealing ring, after the air guide tube is cut into the sealing ring, the sealing ring will wrap the air guide tube to avoid a gap between the sealing ring and the air guide tube, thereby increasing the sealing performance of the motor.

[0020] In addition, the flexible sealing ring is a foamed plastic sealing ring or a silicone sealing ring.

[0021] In addition, the inner ring of the shell is separated from the air guide tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of an impeller in a first embodiment of the present invention;

[0023] Figure 2 is a schematic diagram of the structure of the impeller and the sealing ring after being assembled in the first embodiment of the present invention;

[0024] Figure 3 Schematic diagram of the structure of the motor in the second embodiment of the present invention

[0025] Figure 4 yes Figure 3 Sectional view at AA in the middle;

[0026] Figure 5 yes Figure 4 Enlarged view of point A in the middle.

[0027] Figure numerals: 1. upper fixing plate; 2. lower fixing plate; 3. blades; 11. air guide holes; 4. air guide tube; 41. cutting edge; 42. incision; 5. sealing ring; 6. housing; 61. inner ring; 62. outer ring; 63. annular mounting groove; 7. impeller; 8. rotor; 9. stator. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the present invention clearer, the following will be described in detail with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that in the various embodiments of the present invention, many technical details are provided in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed for protection in the claims of the present application can be implemented.

[0029] A first embodiment of the present invention relates to an impeller, such as Figure 1 and 2 As shown, the impeller includes: an upper fixing plate 1, a lower fixing plate 2 and a plurality of blades 3, wherein an air guide hole 11 is opened on the upper fixing plate 1, and the lower fixing plate 2 is arranged along the axis of the air guide hole 11, opposite to and coaxially with the upper fixing plate 1, and each blade 3 is fixed between the upper fixing plate 1 and the lower fixing plate 2, and the upper fixing plate 1 is partially bent from the air guide hole 11 to a direction away from the air guide hole 11, and the upper fixing plate 1 is bent in a direction away from the lower fixing plate 2 to form an air guide tube 4, and the end face of the air guide tube 4 is a cutting edge 41. The air guide tube 4 is coaxially arranged with the sealing ring 5 of the motor, and the cutting edge 41 cuts into the sealing ring 5. In actual situations, each blade 3 is fixed by the upper fixing plate 1 and the lower fixing plate 2. When the impeller rotates, each blade 3 fans the airflow and draws the airflow into the impeller through the air guide hole 11. At this time, the airflow enters the impeller more smoothly through the guidance of the air guide tube 4. Each blade 3 can be welded or riveted to the upper fixing plate 1 and the lower fixing plate 2.

[0030] Compared with the prior art, the embodiment of the present invention has a cutting edge 41 at the end face of the air guide tube 4. Therefore, when the impeller rotates relative to the sealing ring 5, the end face of the air guide tube 4 can quickly cut into the sealing ring 5 due to the cutting edge 41 at the end face. At this time, the contact surface between the sealing ring 5 and the air guide tube 4 is a relatively smooth surface. Compared with the prior art in which the end face of the air guide tube 4 is a plane, which rubs the contact surface between the sealing ring 5 and the impeller into a rough surface, the friction between the air guide tube 4 and the sealing ring 5 will be greatly reduced, thereby reducing the heat generated by the friction, reducing or preventing the sealing ring 5 from melting, and further avoiding adhesion between the impeller and the sealing ring 5. Since the adhesion between the impeller and the sealing ring 5 can be reduced or avoided, the working performance of the motor to which the impeller belongs can be improved.

[0031] In addition, it is important to note that when the end face of the air guide tube 4 is a cutting edge 41, it can not only reduce the friction between the impeller and the sealing ring 5, but also increase the sealing performance between the impeller and the sealing ring 5, thereby improving the practicability of the impeller. Specifically, since the end face of the air guide tube 4 is a cutting edge 41, the upper edge of the air guide tube 4 close to the end face can cut into the sealing ring 5. At this time, the sealing ring 5 wraps around the air guide tube 4. Compared with a solution in which the sealing ring 5 only abuts against the end face of the air guide tube 4, the sealing between the sealing ring 5 and the air guide tube 4 will be better, which can further prevent the airflow from leaking out from the gap between the sealing ring 5 and the air guide tube 4, thereby allowing the airflow to completely enter the impeller.

[0032] In addition, specific Figure 1 As shown, a plurality of cutouts 42 are also provided on the end surface of the air guide tube 4. Since a plurality of cutouts 42 are provided on the end surface of the air guide tube 4, the debris of the sealing ring 5 cut off by the cutting edge 41 of the air guide tube 4 can be discharged through these cutouts 42, so as to avoid the debris being stuck between the end surface of the air guide tube 4 and the sealing ring 5, thereby increasing the friction between the air guide tube 4 and the sealing ring 5.

[0033] Specifically, Figure 1 As shown, in the present embodiment, the number of the cutouts 42 is four, and the four cutouts 42 are equidistantly arranged around the axis of the air guide tube 4. Since the cutouts 42 are equidistantly arranged around the axis of the air guide tube 4, the debris between the air guide tube 4 and the sealing ring 5 can be evenly discharged through the cutouts 42, avoiding the local accumulation of debris between the air guide tube 4 and the sealing ring 5, thereby minimizing the amount of debris.

[0034] In addition, specific Figure 1 As shown, the cutout 42 is a V-shaped cutout 42. Of course, in actual situations, the cutout 42 can also be a U-shaped cutout. Since the cutout 42 is V-shaped or U-shaped, its opening is open and relatively large, so it is convenient to discharge the debris between the end face of the air guide tube 4 and the sealing ring 5.

[0035] In addition, the direction of the cutting edge 41 is parallel to the axial direction of the air guide tube 4. Since the direction of the cutting edge 41 is parallel to the axial direction of the air guide tube 4, that is to say, the air guide tube 4 is vertically cut into the sealing ring 5, at this time, the impeller only needs to rotate one or two circles relative to the sealing ring 5 to cut into the sealing ring 5, thereby further improving the smoothness of the cut surface of the sealing ring 5 cut by the cutting edge 41 of the air guide tube 4, and further reducing the friction between the air guide tube 4 and the sealing ring 5.

[0036] A second embodiment of the present invention relates to a motor, specifically, Figures 3 to 5As shown, the motor includes: a housing 6, a sealing ring 5, wherein specifically, the housing 6 includes: an inner ring 61 for surrounding an air inlet, an outer ring 62 opposite to the inner ring 61, the inner ring 61 and the outer ring 62 are fixedly connected, and an annular mounting groove 63 is formed between the inner ring 61 and the outer ring 62, and the sealing ring 5 is embedded in the annular mounting groove 63. In actual situations, the inner ring 61 and the outer ring 62 can be welded together, and of course the inner ring 61 and the outer ring 62 can also be integrally formed, and the sealing ring 5 and the inner ring 61 and the outer ring 62 are mutually supported.

[0037] At the same time, if Figure 4 and 5 As shown, the motor also includes: the impeller 7 in the first embodiment, the impeller 7 is arranged in the shell 6 and is coaxially arranged with the shell 6, the air guide tube 4 of the impeller 7 is partially embedded in the annular receiving groove 63, the cutting edge 41 of the air guide tube 4 cuts into the sealing ring 5 and fits tightly with the sealing ring 5, and the sealing ring 5, the shell 6 and the impeller 7 are all coaxially arranged.

[0038] Compared with the prior art, the embodiment of the present invention has a cutting edge 41 at the end face of the air guide tube 4. Therefore, when the impeller 7 rotates relative to the sealing ring 5, the end face of the air guide tube 4 can quickly cut into the sealing ring 5 due to the cutting edge 41 at the end face. At this time, the contact surface between the sealing ring 5 and the air guide tube 4 is a relatively smooth surface. Compared with the prior art in which the end face of the air guide tube 4 is a plane, which rubs the contact surface between the sealing ring 5 and the impeller into a rough surface, the friction between the air guide tube 4 and the sealing ring 5 will be greatly reduced, thereby reducing the heat generated by the friction, reducing or preventing the sealing ring 5 from melting, and further avoiding adhesion between the impeller and the sealing ring 5. Since the adhesion between the impeller and the sealing ring 5 can be reduced or avoided, the working performance of the motor to which the impeller belongs can be improved.

[0039] In addition, it should be emphasized that when the end face of the air guide tube 4 is a cutting edge 41, it can not only reduce the friction between the impeller 7 and the sealing ring 5, but also increase the sealing performance between the impeller 7 and the sealing ring 5, thereby improving the practicality of the impeller 7. Specifically, since the end face of the air guide tube 4 is a cutting edge 41, the upper edge of the air guide tube 4 close to the end face can cut into the sealing ring 5. At this time, it means that the sealing ring 5 wraps the air guide tube 4. Compared with the solution in which the sealing ring 5 only abuts against the end face of the air guide tube 4, the sealing between the sealing ring 5 and the air guide tube 4 will be better, which can further prevent the airflow from leaking out from the gap between the sealing ring 5 and the air guide tube 4, so that the airflow can completely enter the impeller 7.

[0040] In addition, specifically, the sealing ring 5 is a flexible sealing ring 5. Since the sealing ring 5 is a flexible sealing ring 5, after the air guide tube 4 cuts into the sealing ring 5, the sealing ring 5 will wrap the air guide tube 4 to avoid a gap between the sealing ring 5 and the air guide tube 4, thereby increasing the sealing performance of the motor.

[0041] In addition, the flexible sealing ring 5 is a foamed plastic sealing ring 5 or a silicone sealing ring 5 .

[0042] In addition, the inner ring 61 of the housing 6 is separated from the air guide tube 4 .

[0043] In addition, specifically, in this embodiment, if Figure 4 and 5 As shown, the motor also includes: a rotor 8 and a stator 9 arranged in the shell 6. Specifically, the rotor 8 and the stator 9 are both arranged in the outer ring 62 of the shell 6. The rotor 8 is a rotating shaft, which is coaxially fixedly connected to the lower fixed plate 2. The impeller can be driven to rotate by the rotor 8, so that the airflow outside the shell 6 is sucked into the impeller, and the stator 9 drives the impeller to rotate.

[0044] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A motor, characterized in that: include: The housing (6) comprises: an inner ring (61) for enclosing an air inlet, and an outer ring (62) opposite to the inner ring (61), wherein an annular receiving groove (63) is formed between the inner ring (61) and the outer ring (62); A sealing ring (5) is embedded in the annular receiving groove (63); The impeller (7) comprises: an upper fixing plate (1) having an air guide hole (11); and a lower fixing plate (2) arranged along the axis of the air guide hole (11) and opposite to and coaxial with the upper fixing plate (1). Wherein, from the air guide hole (11) to a direction away from the air guide hole (11), the upper fixing plate (1) is partially bent and extended in a direction away from the lower fixing plate (2) to form an air guide tube (4), and the end surface of the air guide tube (4) is a cutting edge (41), and the direction of the cutting edge (41) is parallel to the axial direction of the air guide tube (4); The air guide tube (4) of the impeller (7) is partially embedded in the annular receiving groove (63), and the cutting edge (41) of the air guide tube (4) cuts into the sealing ring (5) and fits tightly with the sealing ring (5); The end surface of the air guide tube (4) is provided with a plurality of cutouts (42), each of the cutouts (42) being equidistantly arranged around the axis of the air guide tube (4), and the plurality of cutouts (42) are configured to discharge debris cut off by the cutting edge (41) of the sealing ring (5); The incision (42) is a V-shaped incision (42).

2. The motor according to claim 1, characterized in that The impeller (7) further comprises a plurality of blades (3), wherein the plurality of blades (3) are fixed between the upper fixing plate (1) and the lower fixing plate (2).

3. The motor according to claim 1, characterized in that The sealing ring (5) is a flexible sealing ring (5).

4. The motor according to claim 3, characterized in that The flexible sealing ring (5) is a foamed plastic sealing ring (5) or a silicone sealing ring (5).

5. The motor according to claim 1, characterized in that The inner ring (61) of the shell (6) and the air guide cylinder (4) are separated from each other.

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