CN215870952U - Rotor assembly and rotor structure - Google Patents

Abstract

The utility model discloses a rotor assembly and a rotor structure, belonging to the technical field of heat dissipation, wherein the rotor assembly comprises a rotating shaft, a rotor cover and rotor cooling fins; the rotor cover is sleeved on the rotating shaft and is synchronously and rotatably connected with the rotating shaft; the rotor fin including set firmly in the main part and a plurality of the fan wheel portion that set firmly on the main part of the one end of rotor cover, the extending direction of fan wheel portion with the direction of rotation of rotor cover is crossing. The rotor assembly and the rotor structure provided by the utility model can generate cooling air in the rotating process, so that the rotor assembly has a heat dissipation function and a good heat dissipation effect, and heat dissipation is realized through the rotor cooling fins arranged on the rotor cover, so that a fan can have low noise and the noise pollution is reduced.

Description

Rotor assembly and rotor structure

Technical Field

The utility model relates to the technical field of heat dissipation, in particular to a rotor assembly and a rotor structure.

Background

The fan is widely applied to the fields of various fan blade-shaped fans, various smoke and air ducts, air conditioner condenser cooling fans, automobile temperature control system inner units and the like. The brushless blower is one of the fans, and for example, the structure of the brushless blower is usually that a motor rotor is used as an energy output, and the motor rotor is connected with an impeller and drives the impeller to rotate relative to a motor stator seat as a rotating shaft, so as to do work to the outside. However, in general, the brushless blower has a long continuous operation time, which causes the temperature of the motor to continuously rise due to long-time operation, and the generated heat causes the winding resistance in the stator of the motor to become large, which correspondingly increases the energy consumption and reduces the efficiency.

Among the prior art, brushless air-blower relies on the return air inlet to flow back the cooling air that the air-blower heating panel realized the cooling, but, the cooling air can only blow to local heating panel on, leads to brushless air-blower to appear the inhomogeneous condition of heat dissipation more easily, influences the radiating effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a rotor assembly and a rotor structure, which can generate cooling air in the rotating process, so that the rotor assembly has a heat dissipation function and has a high heat dissipation effect.

As the conception, the technical scheme adopted by the utility model is as follows:

a rotor assembly, comprising:

a rotating shaft;

the rotor cover is sleeved on the rotating shaft and is synchronously and rotatably connected with the rotating shaft;

the rotor cooling fin comprises a main body part and a plurality of fan wheel parts, wherein the main body part is fixedly arranged at one end of the rotor cover, the fan wheel parts are fixedly arranged on the main body part, and the extending direction of the fan wheel parts is crossed with the rotating direction of the rotor cover.

Optionally, the main body portion is a ring shape, and the plurality of fan wheel portions are arranged at even and spaced intervals along the circumference of the main body portion.

Optionally, the length of the fan wheel portion is greater than the width of the main body portion, and each fan wheel portion extends from the inner ring surface of the main body portion to the outer ring surface of the main body portion.

Optionally, two ends of the impeller portion are respectively provided with an air guide end surface, and the two air guide end surfaces are respectively curved surfaces.

Optionally, the cross section of the fan wheel part is in a parallelogram shape, or the longitudinal section of the fan wheel part is in an isosceles triangle shape.

Optionally, the rotor cover includes a bottom shell and a casing connected to the bottom shell, the rotating shaft is connected to the bottom shell in a synchronous rotation manner, the main body is fixed to the casing, and the bottom shell has a plurality of heat dissipation holes.

Optionally, the main body portion is provided with a mounting hole, an end face of one end of the rotor cover is provided with a mounting block, and the mounting block is fixedly arranged in the mounting hole in a penetrating manner.

Optionally, the main body portion and the rotor cover form a mounting groove, and the rotor assembly further includes a plurality of rotor magnets, and the plurality of rotor magnets are mounted in the mounting groove.

Optionally, the impeller portion is disposed on a first surface of the main body portion, an extending portion is vertically disposed on a second surface of the main body portion, the main body portion is fixed to one end of the rotor cover through the extending portion in a sleeved mode, and the second surface is opposite to the first surface.

A rotor structure comprising:

the rotor assembly described above;

the motor base plate, the motor base plate is corresponding to the surface of rotor fin is provided with the wind-guiding fin, the wind-guiding fin corresponds a plurality of the position department of fan wheel portion is provided with a plurality of wind-guiding fixed part.

Optionally, an avoiding notch is formed in the top surface of one end of the air guide fixing part, and the avoiding notch is configured to avoid the fan wheel part.

Optionally, the plurality of air guide fixing parts are uniformly and alternately arranged along the circumferential direction of the air guide cooling fin.

Optionally, an air guide channel is formed between two adjacent air guide fixing parts and the rotor cooling fin.

Optionally, the air guide fixing portion extends along a radial direction of the air guide cooling fin, and end surfaces of two ends of the air guide fixing portion are curved surfaces respectively.

The utility model has at least the following beneficial effects:

according to the rotor assembly and the rotor structure provided by the utility model, the rotor cooling fins are arranged at one end of the rotor cover, so that the rotor cooling fins can rotate along with the rotor cover, and the extending direction of the fan wheel part of the rotor cooling fins is crossed with the rotating direction of the rotor cover, so that the fan wheel part can generate uniform cooling air when rotating along with the rotor cover, further the rotor assembly can automatically dissipate heat and dissipate heat for other structures in the fan, the probability of uneven heat dissipation of the fan is reduced, and the heat dissipation effect is ensured.

Drawings

Fig. 1 is a first schematic structural diagram of a rotor assembly according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a rotor assembly according to an embodiment of the present invention;

FIG. 3 is an exploded view of a rotor assembly provided by an embodiment of the present invention;

FIG. 4 is a top view of a rotor heat sink provided by an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a rotor cooling fin provided in an embodiment of the present invention;

FIG. 6 is an exploded schematic view of a rotor structure provided in accordance with an embodiment of the present invention;

FIG. 7 is a front view of a rotor structure provided by an embodiment of the present invention;

FIG. 8 is a schematic cross-sectional view of a rotor structure provided by an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a fan provided in an embodiment of the present invention.

In the figure:

1. a rotating shaft; 2. a rotor cover; 21. a base portion; 211. heat dissipation holes; 22. a housing portion; 23. mounting blocks; 3. rotor cooling fins; 31. a main body portion; 311. mounting holes; 312. an inner ring surface; 313. an outer ring surface; 32. a fan wheel part; 321. presetting a side surface; 322. an air guide end face; 33. an extension portion; 4. a rotor magnet; 10. a motor substrate; 101. wind guiding and radiating fins; 102. an air guide fixing part; 1021. avoiding the notch; 20. a housing; 30. a stator assembly; 40. an impeller.

Detailed Description

In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

This embodiment provides a rotor subassembly, can produce the cooling air at the pivoted in-process for the rotor subassembly has higher radiating effect from taking the heat dissipation function. It should be noted that the rotor assembly provided in this embodiment may be applied to a fan, and the fan may be a blower, an induced draft fan, a blower, a brushless blower, and the like, which is not limited in this embodiment.

As shown in fig. 1, the rotor assembly includes a rotating shaft 1, a rotor cover 2, and rotor fins 3.

Wherein, the one end of rotation axis 1 is the output, and the side of output has the plane to be used for being connected with other structures, and drive other structures and rotate. In some embodiments, the output is for connection to the impeller 40.

Referring to fig. 1, the rotor cover 2 is sleeved on the rotating shaft 1 and synchronously and rotatably connected with the rotating shaft 1, and when the rotor cover 2 rotates, the rotating shaft 1 can be driven to rotate, and then the impeller 40 is driven to rotate.

Alternatively, as shown in fig. 1, one end of the rotor cover 2 is an opening structure, the rotor cooling fin 3 is fixedly disposed at the opening end of the rotor cover 2, and the rotor cooling fin 3 includes a main body portion 31 and a plurality of fan wheel portions 32 fixedly disposed on the main body portion 31. The main body 31 is fixed to one end of the rotor cover 2, the fan wheel 32 is in a shape of a long strip, and an extending direction of each fan wheel 32 intersects with a rotating direction of the rotor cover 2. When the rotor cover 2 rotates, the main body portion 31 and the fan wheel portion 32 can be rotated to revolve the fan wheel portion 32 around the rotation axis 1, and since the extending direction of the fan wheel portion 32 intersects the rotating direction of the rotor cover 2, cooling wind for cooling the rotor cover 2 and other structures in the fan can be generated when the fan wheel portion 32 is revolved by the rotor cover 2. Illustratively, the cooling wind cools the stator assembly 30 in the wind turbine such that the rotor assembly and rotor structure form a self-dissipating heat. Preferably, the extending direction of each fan portion 32 is perpendicular to the rotation direction of the rotor cover 2, so that a large and large amount of cooling wind can be generated, further improving the cooling effect.

In some embodiments, the fan wheel portion 32 is disposed on a side of the main body portion 31 facing the heat dissipation plate of the fan, so that the cooling wind generated by the fan wheel portion 32 can be uniformly blown to the heat dissipation plate to uniformly carry away the heat on the heat dissipation plate, thereby improving the uniformity of heat dissipation to the heat dissipation plate.

The rotor subassembly that this embodiment provided, one end through at rotor cover 2 sets up rotor fin 3, make rotor fin 3 can follow rotor cover 2 and rotate, because the extending direction of impeller portion 32 of rotor fin 3 is crossing with the direction of rotation of rotor cover 2, make impeller portion 32 can produce more even cooling air when rotor cover 2 is rotatory, and then make the rotor subassembly can dispel the heat and dispel the heat for other structures in the fan certainly, the uneven probability of heat dissipation has been reduced to the fan appearance, the radiating effect has been guaranteed.

And, realize the heat dissipation through setting up rotor cooling fin 3 on rotor cover 2, compare in the radiating mode of cooling air that adopts the return air inlet backward flow among the prior art, the fan can produce less noise, has reduced noise pollution.

Alternatively, as shown in fig. 3, the main body 31 is annular, and the plurality of fan wheel portions 32 are uniformly and at intervals along the circumferential direction of the main body 31, so that the cooling air generated by the rotor cooling fins 3 is more uniform, and the cooling air blowing to the heat dissipation plate can take away heat at each position of the heat dissipation plate. In some embodiments, in order to prevent the generation of the vortex due to the irregular arrangement of the fan portions 32, as shown in fig. 3 or 4, the extending directions of the plurality of fan portions 32 and the rotating direction of the rotor cover 2 are all the same, so that the generation of the vortex between the fan portions 32 can be prevented, and the generation of the loud noise from the rotor cooling fins 3 can be prevented.

As shown in fig. 4, the length of the impeller portion 32 in the extending direction thereof is larger than the width of the annular main body portion 31, that is, the extending direction of the impeller portion 32 intersects with the radial direction of the main body portion 31, that is, the impeller portion 32 does not extend in the radial direction of the main body portion 31. The fan wheel portion 32 can have a large windward area by the arrangement of the fan wheel portion 32, so that a large amount of cooling wind can be generated during one rotation. Also, each fan wheel portion 32 extends from the inner annular surface 312 of the main body portion 31 to the outer annular surface 313 of the main body portion 31 such that each fan wheel portion 32 spans the main body portion 31 such that the fan wheel portion 32 has a larger frontal area. The inner ring surface 312 of the body 31 is an inner surface of the body 31, and the outer ring surface 313 of the body 31 is an outer surface of the body 31. Alternatively, as shown in fig. 2, the predetermined side 321 of the fan wheel portion 32 perpendicular to the main body portion 31 is a circular arc surface, so that the fan wheel portion 32 can have a large frontal area.

Furthermore, the end surface of one end of the fan wheel part 32 is flush with the inner ring surface 312 of the main body part 31 to prevent the fan wheel part 32 from protruding out of the main body part 31, so that on one hand, interference to other structures of the fan can be prevented, and on the other hand, extra noise generated by protruding out of the main body part 31 can be reduced. Similarly, the end surface of the other end of the impeller portion 32 is flush with the outer annular surface 313 of the main body portion 31 to prevent interference with other structures and to prevent generation of additional noise.

Alternatively, in order to further reduce the generation of extra noise by the fan wheel portion 32, as shown in fig. 3, two ends of the fan wheel portion 32 are respectively provided with air guide end surfaces 322, and the two air guide end surfaces 322 of one fan wheel portion 32 are respectively curved surfaces, that is, there is no angular angle at the two ends of the fan wheel portion 32, so that the probability of generating vortices can be reduced, and the probability of generating noise can be reduced.

In this embodiment, the shape of the fan wheel portion 32 can be varied, and in some embodiments, as shown in fig. 4, the cross section of the fan wheel portion 32 is a parallelogram shape, that is, the outer contour of the fan wheel portion 32 is a flat bar shape. In other embodiments, the longitudinal section of the impeller portion 32 is in an isosceles triangle shape, and the tip of the impeller portion 32 is far away from the main body portion 31, so that the impeller portion 32 can be thinner and lighter while the fan portion 32 and the main body portion 31 have higher connection strength, which is beneficial to the lightening of the rotor assembly and the rotor structure.

As shown in fig. 2, the rotor cover 2 includes a base portion 21 and a case portion 22 connected to the base portion 21. The housing 22 may be, but not limited to, a hollow cylindrical structure or a cup-shaped structure, and the rotating shaft 1 and the bottom housing 21 are connected to rotate synchronously, and the main body 31 of the rotor cooling fin 3 is fixed to the housing 22. The base housing part 21 has a plurality of heat dissipation holes 211, so that the rotor cover 2 can be communicated with the outside through the heat dissipation holes 211, and when the rotor cooling fin 3 rotates, the outside fluid can be sucked through the heat dissipation holes 211, and the hot fluid after cooling the heat dissipation plate can flow out from the heat dissipation holes 211. In this embodiment, the heat dissipation holes 211 are uniformly and alternately arranged around the rotation axis 1, and the heat dissipation holes 211 are trapezoidal. Optionally, the number of the impeller portions 32 is greater than the number of the heat dissipation holes 211.

Referring to fig. 3, the main body 31 is provided with a mounting hole 311, and an end surface of one end of the rotor cover 2 is provided with a mounting block 23, and specifically, an end surface of the casing 22 away from the bottom casing 21 is provided with a mounting block 23. The mounting block 23 is inserted and fixed in the mounting hole 311 to fixedly connect the rotor cooling fin 3 and the rotor cover 2.

Optionally, the rotor assembly further includes a plurality of rotor magnets 4, wherein the main body 31 and the rotor cover 2 form a mounting groove, and the plurality of rotor magnets 4 are located in the rotor cover 2 and respectively mounted in the mounting groove. In some embodiments, a plurality of rotor magnets 4 are arranged along the circumferential direction of the rotor cover 2.

Alternatively, referring to fig. 5, the impeller portion 32 is disposed on a first surface of the main body portion 31, an extending portion 33 is vertically disposed on a second surface of the main body portion 31 opposite to the first surface, and the main body portion 31 is fixed to one end of the rotor cover 2 through the extending portion 33.

The present embodiment also provides a rotor structure including the rotor assembly motor base plate 10 described above.

Specifically, as shown in fig. 6 to 8, the motor substrate 10 is sleeved on the rotating shaft 1 and located on one side of the rotor cover 2 and the rotor heat sink 3. The motor substrate 10 is disposed opposite to the rotor heat sink 3, and the motor substrate 10 is fixedly provided with air guiding heat sinks 101 corresponding to the surfaces of the rotor heat sinks 3, that is, the surface of the motor substrate 10 facing the rotor heat sinks 3 is fixedly provided with the air guiding heat sinks 101, and the air guiding heat sinks 101 are used for absorbing heat generated by the rotor assembly or the stator assembly 30 and dissipating the heat. The air guide fixing parts 102 are respectively arranged at the positions of the air guide cooling fins 101 corresponding to the fan wheel parts 32, and the air guide fixing parts 102 are perpendicular to the air guide cooling fins 101 and used for assisting the air guide cooling fins 101 in dissipating heat outwards.

Optionally, referring to fig. 6, an avoiding notch 1021 is formed in a top surface of one end of the wind guide fixing portion 102, and the avoiding notch 1021 is used for avoiding the fan wheel portion 32, so as to prevent the fan wheel portion 32 from interfering with the wind guide fixing portion 102 when rotating, and further prevent the wind guide fixing portion 102 from interfering with the rotor cooling fins 3. Illustratively, the avoidance gap 1021 is stepped, and the dimension of the avoidance gap 1021 is determined according to the dimension of the fan wheel portion 32 in the radial direction of the main body portion 31.

Referring to fig. 6, the plurality of air guide fixing portions 102 are uniformly and alternately arranged along the circumferential direction of the air guide heat sink 101, so as to improve the uniformity of the air guide fixing portions 102 assisting the air guide heat sink 101 in dissipating heat. Further, a wind guide channel is formed between two adjacent wind guide fixing portions 102, so that the motor substrate 10 has a plurality of wind guide channels, and external air flow can enter the center of the wind guide heat dissipation fin 101 through the plurality of wind guide channels, so as to better carry away heat on the wind guide heat dissipation fin 101 and the rotor heat dissipation fin 3.

Optionally, the air guide fixing portion 102 extends along the radial direction of the air guide cooling fin 101 to improve the air guide effect of the air guide fixing portion 102, and end surfaces of two ends of the air guide fixing portion 102 are respectively curved surfaces to reduce the probability of scratching or scratching other structures.

The present embodiment further provides a blower, as shown in fig. 9, the blower includes the above-mentioned rotor structure, a stator assembly 30, a housing 20, and an impeller 40. Wherein the rotor housing 2 has a recess in which the stator assembly 30 is mounted and is able to interact with the rotor magnet 4 to drive the rotor assembly in rotation. The casing 20 is provided outside the stator assembly 30 and the rotor structure, and the impeller 40 is connected to an output end of the rotating shaft 1. The rotor cooling fins 3 can dissipate heat from the rotor assembly and the stator assembly 30.

The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but rather is susceptible to various changes and modifications without departing from the spirit and scope of the utility model, which changes and modifications are within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (14)

1. A rotor assembly, comprising:

a rotating shaft (1);

the rotor cover (2) is sleeved on the rotating shaft (1) and is synchronously and rotatably connected with the rotating shaft (1);

rotor fin (3), including set firmly in main part (31) and a plurality of the rotor cover (2) one end set firmly in fan wheel portion (32) on main part (31), the extending direction of fan wheel portion (32) with the direction of rotation of rotor cover (2) is crossing.

2. The rotor assembly according to claim 1, wherein the main body portion (31) is annular, and the plurality of fan wheel portions (32) are uniformly and alternately arranged in a circumferential direction of the main body portion (31).

3. The rotor assembly of claim 2, wherein the length of the sector portion (32) is greater than the width of the body portion (31), and each sector portion (32) extends from an inner annular surface (312) of the body portion (31) to an outer annular surface (313) of the body portion (31).

4. The rotor assembly of claim 3, wherein the fan portion (32) has air guide end surfaces (322) at both ends, and the air guide end surfaces (322) are curved surfaces.

5. A rotor assembly as claimed in any one of claims 1 to 3, wherein the sector portion (32) has a parallelogram shape in cross section or the sector portion (32) has an isosceles triangle shape in longitudinal section.

6. The rotor assembly according to any one of claims 1 to 3, wherein the rotor cover (2) comprises a bottom shell portion (21) and a casing portion (22) connected to the bottom shell portion (21), the rotating shaft (1) is synchronously and rotatably connected with the bottom shell portion (21), the main body portion (31) is fixedly arranged on the casing portion (22), and the bottom shell portion (21) is provided with a plurality of heat dissipation holes (211).

7. The rotor assembly according to any one of claims 1 to 3, wherein the main body part (31) is provided with a mounting hole (311), the end surface of one end of the rotor cover (2) is provided with a mounting block (23), and the mounting block (23) is fixedly arranged in the mounting hole (311) in a penetrating way.

8. A rotor assembly according to any one of claims 1-3, wherein the main body portion (31) forms a mounting slot with the rotor cover (2), the rotor assembly further comprising a plurality of rotor magnets (4), the plurality of rotor magnets (4) being mounted in the mounting slot.

9. A rotor assembly as claimed in any one of claims 1 to 3, wherein the fan wheel portion (32) is provided on a first surface of the main body portion (31), an extension portion (33) is vertically provided on a second surface of the main body portion (31), the main body portion (31) is sleeved and fixed on one end of the rotor cover (2) through the extension portion (33), and the second surface is opposite to the first surface.

10. A rotor structure, comprising:

a rotor assembly as claimed in any one of claims 1 to 9;

the motor base plate (10), the motor base plate (10) correspond to the surface of rotor fin (3) is provided with wind-guiding fin (101), wind-guiding fin (101) correspond a plurality of the position department of fan wheel portion (32) is provided with a plurality of wind-guiding fixed part (102).

11. The rotor structure as claimed in claim 10, wherein a top surface of one end of the wind guide fixing portion (102) is provided with an avoiding notch (1021), and the avoiding notch (1021) is configured to avoid the fan wheel portion (32).

12. The rotor structure according to claim 10, wherein a plurality of the air guide fixing portions (102) are provided evenly and at intervals in a circumferential direction of the air guide fins (101).

13. The rotor structure according to claim 12, wherein an air guide flow path is formed between two adjacent air guide fixing portions (102).

14. The rotor structure according to claim 10, wherein the air guide fixing portion (102) extends in a radial direction of the air guide fin (101), and end surfaces of both ends of the air guide fixing portion (102) are curved surfaces.

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