Electric machine and fan

Abstract

The application discloses a motor and a fan. The motor comprises a motor base and an air guide cover. The motor base comprises a first shell, a second shell and a plurality of guide vanes. The air guide cover comprises a first cover, a second cover and a plurality of connecting parts. The guide vanes and the connecting parts abut each other. The two ends of a rotating shaft are rotatably connected to the second shell and the second cover respectively. A connecting piece is inserted into the connecting parts and the guide vanes or the inner walls of the first shell and the first cover. The fan comprises the motor. In the embodiment of the application, the connecting piece is inserted into the connecting parts and the guide vanes or the inner walls of the first shell and the first cover by using the wall thickness of the connecting parts and the guide vanes or the first cover and the first shell. The motor base and the air guide cover are detachably connected, and the motor is convenient to disassemble and maintain later.

Description

Technical Field

[0001] This invention relates to the field of motor technology, and more particularly to a motor and a fan. Background Technology

[0002] Typically, motors are equipped with a shaft mounting system and an exhaust shroud for induced airflow, which ensures smooth rotor rotation and stable airflow from the exhaust shroud's outlet. In related technologies, the exhaust shroud is fixed to the motor base by welding or bonding, which involves complex assembly processes, is prone to cracking at the connection point, results in poor installation quality, affects the motor's service life, and makes later disassembly and maintenance inconvenient. Summary of the Invention

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a motor that facilitates later maintenance.

[0004] The present invention also proposes a fan having the above-mentioned motor.

[0005] An electric motor according to a first aspect embodiment of the present invention includes:

[0006] The motor base includes a first housing, a second housing, and a plurality of guide vanes. The first housing is arranged around the outside of the second housing. The two sides of the guide vanes are respectively connected to the first housing and the second housing. The plurality of guide vanes are arranged at intervals along the circumference of the second housing, and adjacent guide vanes define a first air duct.

[0007] An air intake hood includes a first hood, a second hood, and a plurality of connecting parts. The first hood is arranged around the outside of the second hood. The two sides of the connecting parts are respectively connected to the first hood and the second hood. The plurality of connecting parts are arranged at intervals along the circumference of the second hood. Adjacent connecting parts define a second air duct. The guide vanes and the connecting parts abut against each other in the axial direction of the motor base.

[0008] The connector is detachably connected to the motor base and the air duct cover;

[0009] A rotating shaft, with its two ends rotatably connected to the second housing and the second cover, respectively;

[0010] The connector is inserted into the connecting part and the guide vane; or the connector is inserted into the inner wall of the first housing and the inner wall of the first cover.

[0011] The motor according to embodiments of the present invention has at least the following beneficial effects:

[0012] In embodiments of the present invention, the connecting part and the guide vane or the first cover and the first housing are used to make the connecting piece inserted into the connecting part and the guide vane, or into the inner wall of the first cover and the first housing, so as to realize the detachable connection between the motor base and the air duct, which facilitates the later disassembly and maintenance of the motor.

[0013] According to some embodiments of the present invention, the connector is inserted into the connecting portion and the guide vane, the thickness of the guide vane in the circumferential direction of the second housing gradually increases in the direction toward the air duct, and the minimum thickness of the connecting portion is not less than the maximum thickness of the guide vane.

[0014] According to some embodiments of the present invention, the air duct further includes a plurality of positioning pins, at least one of the positioning pins is connected to one end of the connecting portion facing the guide vane, and the guide vane is provided with a positioning hole at one end facing the connecting portion, and the positioning pin is inserted into the positioning hole.

[0015] According to some embodiments of the present invention, the connector is inserted into the inner wall of the first housing and the inner wall of the first cover, wherein the first housing includes a first mounting portion protruding toward the second housing, the first cover includes a second mounting portion protruding toward the second cover, and the connector is inserted into the first mounting portion and the second mounting portion.

[0016] According to some embodiments of the present invention, the first mounting portion is connected to the leeward side of the guide vane, and the second mounting portion is connected to the leeward side of the connecting portion.

[0017] According to some embodiments of the present invention, the thickness of the first mounting portion gradually increases along the windward side of the connecting portion toward the leeward side of the adjacent connecting portion and toward the connecting member.

[0018] According to some embodiments of the present invention, the connector is inserted into the inner wall of the first housing and the inner wall of the first cover, and along the windward side of the connector toward the leeward side of the adjacent connector, the thickness of the first cover in the radial direction of the air duct and the thickness of the first housing in the radial direction of the motor base gradually increase, and the first housing abuts against the first cover.

[0019] According to some embodiments of the present invention, the second cover has an annular air intake portion at one end facing away from the motor base, and the air intake portion gradually approaches the first cover from the inner wall of the first cover along the direction facing away from the motor base.

[0020] According to some embodiments of the present invention, along the direction opposite to the motor mount, the inner wall of the first cover gradually approaches the second cover.

[0021] A fan according to a second aspect of the present invention comprises:

[0022] The motor of the first aspect embodiment;

[0023] An impeller is mounted on the rotating shaft and located at the end of the rotating shaft opposite to the air intake shroud.

[0024] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0026] Figure 1 This is a schematic diagram of one embodiment of the motor of the present invention;

[0027] Figure 2 This is a schematic diagram of another embodiment of the motor of the present invention;

[0028] Figure 3 This is a cross-sectional view of one embodiment of the motor of the present invention;

[0029] Figure 4 This is a schematic diagram of one embodiment of the motor mount of the present invention;

[0030] Figure 5 This is a schematic diagram of one embodiment of the air intake shroud of the present invention;

[0031] Figure 6 This is a schematic diagram showing the fit between the guide vane and the connecting part;

[0032] Figure 7 This is a schematic diagram of the motor mount of the present invention from another direction;

[0033] Figure 8 This is a schematic diagram of one embodiment of the first cover;

[0034] Figure 9 This is a schematic diagram of one embodiment of the first mounting unit;

[0035] Figure 10 This is a schematic diagram of another embodiment of the first mounting section.

[0036] Figure label:

[0037] Motor base 100, first housing 110, first mounting part 111, second housing 120, guide vane 130, positioning hole 131, first air duct 140, air inlet 141, air outlet 142; air duct cover 200, first cover body 210, second mounting part 211, second cover body 220, air duct 221, connecting part 230, mounting hole 231, second air duct 240, positioning pin 250; rotating shaft 300; connecting piece 400; impeller 500. Detailed Implementation

[0038] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0039] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0040] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0041] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0042] In the description of this invention, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] An embodiment of the present invention provides a motor, with reference to... Figures 1 to 3 The motor includes a motor base 100, an exhaust shroud 200, a rotating shaft 300, and a connector 400. The two ends of the rotating shaft 300 are rotatably connected to the motor base 100 and the exhaust shroud 200, respectively. The rotating shaft 300 is used for output rotation. The connector 400 is detachably connected to the motor base 100 and the exhaust shroud 200, which facilitates the later disassembly and maintenance of the motor.

[0044] Specifically, refer to Figure 4 The motor base 100 includes a first housing 110, a second housing 120, and a plurality of guide vanes 130. The first housing 110 is arranged around the outside of the second housing 120. The two sides of the guide vanes 130 are respectively connected to the first housing 110 and the second housing 120. The plurality of guide vanes 130 are distributed circumferentially around the second housing 120, and a first air duct 140 is defined between adjacent guide vanes 130. The airflow entering the first air duct 140 can flow axially along the motor base 100 under the guidance of the guide vanes 130. (Refer to...) Figure 5 The air hood 200 includes a first hood 210, a second hood 220, and a plurality of connecting parts 230. The first hood 210 is arranged around the outside of the second hood 220. The two sides of the connecting parts 230 are respectively connected to the first hood 210 and the second hood 220. The plurality of connecting parts 230 are arranged at intervals along the circumference of the second hood 220. A second air duct 240 is defined between adjacent connecting parts 230. The guide vane 130 and the connecting part 230 abut against each other in the axial direction of the motor base 100. The first air duct 140 and the second air duct 240 are connected. The airflow can flow along the first air duct 140 into the second air duct 240. The rotating shaft 300 is located inside the second housing 120 and the second hood 220, and its two ends are rotatably connected to the second housing 120 and the second hood 220, respectively.

[0045] In one embodiment, such as Figure 1 As shown, the connector 400 is inserted into the connecting part 230 and the guide vane 130. After locking the connector 400, the motor base 100 and the air duct 200 are detachably connected; in another embodiment, as shown... Figure 2 As shown, the connector 400 is inserted into the inner wall of the first housing 110 and the inner wall of the first cover 210. After locking the connector 400, a detachable connection between the motor base 100 and the air duct 200 is achieved. Thus, in this invention, by utilizing the thickness of the connecting part 230 and the guide vane 130 and their mutual abutment relationship, or the wall thickness of the first cover 210 and the first housing 110 and their mutual abutment relationship, the connector 400 is inserted into the connecting part 230 and the guide vane 130, or after the connector 400 is inserted into the inner wall of the first cover 210 and the first housing 110, a detachable connection between the motor base 100 and the air duct 200 is achieved. This facilitates the later disassembly and maintenance of the motor, and the connection strength between the motor base 100 and the air duct 200 is high, improving the service life of the motor.

[0046] It should be noted that the connector 400 can be a threaded fastener. The first cover 210 and the first housing 110 or the guide vane 130 and the connecting part 230 are provided with mounting holes 231. The hole wall of the mounting hole 231 is provided with internal threads that cooperate with the threaded fastener. By locking the threaded fastener, the air duct 200 and the motor base 100 can be stably connected. The assembly process of the air duct 200 and the motor base 100 is simple and the connection stability is high.

[0047] For the connection method where the connector 400 is inserted into the connector 230 and the guide vane 130, such as Figure 6 As shown, the guide vane 130 is located inside the first air duct 140. The thickness of the guide vane 130 in the circumferential direction of the second housing 120 gradually increases in the direction toward the air duct 200. The minimum thickness of the connecting part 230 is not less than the maximum thickness of the guide vane 130, so that the end of the guide vane 130 that abuts against the connecting part 230 has sufficient thickness to be connected with the connector 400, thereby improving the structural strength of the guide vane 130 and the connection strength between the connector 400 and the connecting part 230 and the guide vane 130.

[0048] The first air duct 140 has an air inlet 141 at the end facing away from the air hood 200 and an air outlet 142 at the end facing the air hood 200. External airflow enters the first air duct 140 through the air inlet 141 and is guided by the guide vane 130 into the second air duct 240. In one embodiment, the connecting portion 230 has the same thickness in the axial direction of the air hood 200, and the end face of the guide vane 130 facing the air hood 200 coincides with the end face of the connecting portion 230 facing the motor base 100, so as to reduce the wind resistance of the airflow from the first air duct 140 to the second air duct 240. The connecting portion 230 has an axial guiding effect on the airflow, which can ensure the axiality, wind pressure and wind speed of the airflow after it is blown out.

[0049] The guide vane 130 near the air inlet 141 is curved, while the guide vane 130 near the air outlet is straight, so that the airflow is guided by the guide vane 130 and blown out axially. Normally, there is an air pressure zone on the leeward side of the guide vane 130 near the air outlet. The airflow spirals and generates turbulence in the air pressure zone, affecting the axiality of the airflow and the wind pressure. Based on this, in this embodiment, the thickness of the end of the guide vane 130 facing away from the air outlet 142 in the circumferential direction of the motor base 100 is less than the thickness of the end of the guide vane 130 facing the air outlet 142 in the circumferential direction of the motor base 100. Since the thickness of the guide vane 130 on the air outlet side is increased, the curvature of the guide vane 130 as it extends from the air inlet side to the air outlet side is reduced, and the airflow can flow smoothly along the guide vane 130, reducing or even eliminating the air pressure zone on the leeward side of the guide vane 130, thereby improving the axiality and wind pressure of the airflow after it is blown out.

[0050] The guide vane 130 is detachably connected to the second housing 120, and / or the guide vane 130 is detachably connected to the first housing 110. The motor base 100 can be formed by assembly, which facilitates the maintenance of the motor base 100 and the processing of the guide vane 130, the first housing 110, and the second housing 120. Specifically, the connection between the guide vane 130 and the first housing 110, and between the guide vane 130 and the second housing 120, can be achieved by providing grooves on the first housing 110 and the second housing 120, and inserting the guide vane 130 into the grooves. This allows the guide vane 130 to mutually limit each other in the circumferential direction, without requiring additional structures and without affecting the airflow entering the first air duct 140.

[0051] like Figure 5 and Figure 7 As shown, the draft hood 200 also includes multiple positioning pins 250. At least one positioning pin 250 is connected to the end of the connecting portion 230 facing the guide vane 130. The end of the guide vane 130 facing the connecting portion 230 is provided with a positioning hole 131, and the positioning pin 250 is inserted into the positioning hole 131. The mutual cooperation between the positioning pin 250 and the positioning hole 131 can realize the mutual positioning of the draft hood 200 and the motor base 100 in the circumferential direction. When the draft hood 200 and the motor base 100 are assembled, the positioning pin 250 and the positioning hole 131 can be used to initially position the two, which facilitates the connection of the connecting piece 400 to the draft hood 200 and the motor base 100.

[0052] It should be noted that, regarding the connection method of the connector 400 being inserted into the guide vane 130 and the connecting part 230, the positioning pin 250 and the mounting hole 231 for the connector 400 are provided on the same connecting part 230 and are offset from each other radially in the air duct 200; or, the positioning pin 250 and the mounting hole 231 are provided on different connecting parts 230. Similarly, the positioning pin 250 and the mounting hole 231 for the connector 400 are provided on the same guide vane 130 and are offset from each other radially in the motor base 100; or, the positioning pin 250 and the mounting hole 231 are provided on different guide vanes 130.

[0053] As a specific example, such as Figure 8As shown, for the connection method in which the connector 400 is inserted into the inner wall of the first housing 110 and the first cover 210, along the direction from the windward side of the connecting part 230 to the leeward side of the adjacent connecting part 230, the thickness of the first cover 210 in the radial direction of the air duct 200 and the thickness of the first housing 110 in the radial direction of the motor base 100 gradually increase. The first housing 110 and the first cover 210 abut against each other, the connector 400 is inserted into the first housing 110 and the first cover 210, and the first housing 110 and the first cover 210 are locked together. On the one hand, the thickness of the first cover 210 and the first housing 110 is greatest on the leeward side of the guide vane 130 or the connecting part 230, which helps to reduce the air pressure zone behind the guide vane 130 and reduce turbulence. On the other hand, by increasing the thickness of the first cover 210 and the first housing 110, the first housing 110 and the first cover 210 have sufficient thickness for the connector 400 to be inserted, and the connecting part 230 is inserted on the leeward side of the guide vane 130 or the connecting part 230, which has a smaller impact on the airflow.

[0054] In other embodiments, such as Figure 1 and Figure 4 Regarding the connection method where the connector 400 is inserted into the inner wall of the first housing 110 and the first cover 210, the first housing 110 includes a first mounting portion 111 protruding towards the second housing 120, and the first cover 210 includes a second mounting portion 211 protruding towards the second cover 220. The connector 400 is inserted into the first mounting portion 111 and the second mounting portion 211, thereby realizing a detachable connection between the air duct 200 and the motor base 100. By setting the first mounting portion 111 and the second mounting portion 211, the first cover 210 and the first housing 110 are thickened, the connector 400 can be stably connected to the first cover 210 and the first housing 110, and the structural strength of the air duct 200 and the motor base 100 is improved.

[0055] It should be noted that the first mounting part 111 is located inside the first air duct 140 and can be installed at any position inside the first air duct 140, and the second mounting part 211 is located inside the second air duct 240 and can be installed at any position inside the second air duct 240.

[0056] Furthermore, such as Figure 9 As shown, the first mounting part 111 is connected to the leeward side of the guide vane 130, and the second mounting part 211 is connected to the leeward side of the connecting part 230. The first mounting part 111 and the second mounting part 211 abut against each other in the axial direction of the motor base 100. By placing the first mounting part 111 and the second mounting part 211 on the leeward side, the influence of the first mounting part 111 and the second mounting part 211 on the airflow can be reduced, and the flow resistance of the airflow in the first air duct 140 and the second air duct 240 can be reduced.

[0057] In another embodiment, such as Figure 10 As shown, the first mounting part 111 abuts against the second mounting part 211, and the thickness of the first mounting part 111 gradually increases along the windward side of the connecting part 230 toward the leeward side of the adjacent connecting part 230 and toward the connector 400. Figure 10 The diagram shows the thickness variation of the first mounting part 111. The thickness of the first mounting part 111 varies in two directions. The edge of the first mounting part 111 facing away from the air duct 200 transitions smoothly with the inner wall of the first housing 110, which effectively reduces the resistance of the first mounting part 111 to the airflow in the first air duct 140 and helps to reduce noise.

[0058] It should be noted that since both the first mounting part 111 and the second mounting part 211 are protruding, by setting the first mounting part 111 and the second mounting part 211, the opening of the air outlet side of the first air duct 140 and the second air duct 240 can be reduced, thereby increasing the air pressure of the airflow.

[0059] like Figure 3 As shown, the second cover 220 has an annular air intake 221 at one end facing away from the motor base 100. Along the direction facing away from the motor base 100, the air intake 221 gradually approaches the first cover 210 from the inner wall facing away from the first cover 210, making the air intake 221 flared out. When the motor is working, there is a high-speed airflow in the second air duct 240. Since the second air duct 240 is arranged around the outside of the second cover 220, a negative pressure zone is easily generated in the area of ​​the second cover 220 facing away from the second air duct 240 under the drive of the high-speed airflow. Turbulence exists in the airflow in the negative pressure zone, affecting the air pressure and air speed. Based on this, by setting the air intake 221 to a flared shape, the air intake 221 guides the exhaust airflow to diffuse, which is convenient for air outlet. Moreover, the airflow is far away from the central area of ​​the second cover 220, which can reduce the negative pressure zone and the negative pressure zone's impact on the airflow.

[0060] Furthermore, along the direction away from the motor base 100, the inner wall of the first cover 210 gradually approaches the second cover 220, thereby reducing the opening of the air outlet side of the second air duct 240, which can increase the air pressure after the air is discharged; and the change trend of the inner wall of the first cover 210 is the same as the change trend of the first mounting part 111, which can simultaneously serve as a connection point for the connector 400.

[0061] In embodiments of the present invention, a fan is also provided, such as... Figure 3 As shown, the device includes the aforementioned motor and an impeller 500. The impeller 500 is mounted on the rotating shaft 300 and rotates with the rotating shaft 300. The impeller 500 is located at the end of the rotating shaft 300 facing away from the air duct 200. The airflow generated by the rotation of the impeller 500 enters the first air duct 140 from the air inlet 141. Guided by the guide vanes 130, the airflow flows axially and is discharged from the air outlet 142, and then enters the second air duct 240.

[0062] One end of the rotating shaft 300 passes through the second housing 120 and is rotatably connected to the second housing 120 via a bearing. The other end of the rotating shaft 300 passes through the second cover 220 and is rotatably connected to the second cover 220 via a bearing. The second housing 120 and the second cover 220 together support the rotating shaft 300, enabling the rotating shaft 300 to rotate stably. The end of the rotating shaft 300 facing away from the air duct 200 extends to the outside of the second housing 120 and is connected to the impeller 500, allowing the impeller 500 to rotate with the rotating shaft 300.

[0063] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. An electric motor, characterized in that, include: The motor base includes a first housing, a second housing, and a plurality of guide vanes. The first housing is arranged around the outside of the second housing. The two sides of the guide vanes are respectively connected to the first housing and the second housing. The plurality of guide vanes are arranged at intervals along the circumference of the second housing, and adjacent guide vanes define a first air duct. An air intake hood includes a first hood, a second hood, and multiple connecting parts. The first hood is arranged around the outside of the second hood. The two sides of each connecting part are connected to the first hood and the second hood, respectively. The multiple connecting parts are arranged at intervals along the circumference of the second hood. Adjacent connecting parts define a second air duct. The guide vanes and the connecting parts abut against each other in the axial direction of the motor base. The second hood has an annular air intake part at one end facing away from the motor base. Along the direction facing away from the motor base, the air intake part gradually approaches the first hood from the inner wall of the first hood, making the air intake part flared outward. The connector is detachably connected to the motor base and the air duct cover; A rotating shaft, with its two ends rotatably connected to the second housing and the second cover, respectively; The connector is inserted into the connecting part and the guide vane.

2. The motor according to claim 1, characterized in that, The thickness of the guide vane in the circumferential direction of the second housing gradually increases in the direction toward the air duct, and the minimum thickness of the connecting part is not less than the maximum thickness of the guide vane.

3. The motor according to claim 1, characterized in that, The air duct also includes multiple positioning pins. At least one positioning pin is connected to the end of the connecting part facing the guide vane. The end of the guide vane facing the connecting part is provided with a positioning hole, and the positioning pin is inserted into the positioning hole.

4. The motor according to claim 1, characterized in that, The connecting part has the same thickness along the axial direction of the air duct, and the end face of the guide vane facing the air duct coincides with the end face of the connecting part facing the motor base.

5. The motor according to claim 1, characterized in that, The first air duct has an air inlet at the end facing away from the air hood and an air outlet at the end facing the air hood. The guide vanes near the air inlet are curved and the guide vanes near the air outlet are straight. And / or, the end of the first air duct facing away from the air hood forms an air inlet, and the end facing the air hood forms an air outlet, and the thickness of the end of the guide vane facing away from the air outlet in the circumferential direction of the motor base is less than the thickness of the end of the guide vane near the air outlet in the circumferential direction of the motor base.

6. The motor according to claim 1, characterized in that, The guide vane is detachably connected to the second housing, and / or the guide vane is detachably connected to the first housing.

7. The motor according to claim 1, characterized in that, The connector is inserted into the inner wall of the first housing and the inner wall of the first cover. Along the windward side of the connector toward the leeward side of the adjacent connector, the thickness of the first cover in the radial direction of the air duct and the thickness of the first housing in the radial direction of the motor base gradually increase, and the first housing abuts against the first cover.

8. The motor according to claim 1, characterized in that, Along the direction away from the motor mount, the inner wall of the first cover gradually approaches the second cover.

9. A fan, characterized in that, include: The motor according to any one of claims 1 to 8; An impeller is mounted on the rotating shaft and located at the end of the rotating shaft opposite to the air intake shroud.

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