Motor structure

Abstract

A motor structure comprises a stator ring, a rotor, an air stirring sheet and a heat conduction shell. The stator ring has a rotor accommodating space therein. The rotor is located in the rotor accommodating space. And the air stirring sheet is arranged on one side of the rotor. The stator ring, the rotor and the air stirring sheets are accommodated in the heat conduction shell. The heat conduction shell comprises a heat conduction cover, and the heat conduction cover is provided with a plurality of radial inner side holes and a plurality of radial outer side holes.

Description

Technical Field

[0001] This invention relates to a motor structure, and more particularly to a motor structure with active heat dissipation function. Background Technology

[0002] A motor is a component used to convert electrical energy into mechanical energy and is widely used in daily life. The stator or rotor inside a motor usually has copper conductor coils. Copper conductors have a certain resistance, so when electricity is applied, some electrical energy is lost due to resistance and dissipated as heat, which may damage the enamel coating and affect the life of the motor.

[0003] Motors are generally known to have passive cooling capabilities. However, as motor power gradually increases, passive cooling is often insufficient to handle the heat generated by high-power motors during operation. Summary of the Invention

[0004] The purpose of this invention is to propose a motor structure that solves the problems of the prior art.

[0005] According to some embodiments of the present invention, a motor structure includes a stator ring, a rotor, a deflector, and a heat-conducting housing. The stator ring has a rotor accommodating space therein. The rotor is located within the rotor accommodating space. The deflector is disposed on one side of the rotor. The heat-conducting housing houses the stator ring, the rotor, and the deflector therein. The heat-conducting housing includes a heat-conducting cover having a plurality of radially inner holes and a plurality of radially outer holes.

[0006] According to some embodiments of the present invention, a plurality of radially inner holes are axially aligned with the deflector.

[0007] According to some embodiments of the present invention, the heat-conducting cover includes a wind-blocking ring located between a plurality of radially inner holes and a plurality of radially outer holes.

[0008] According to some embodiments of the present invention, the deflector comprises a plurality of blades, each blade having a radial length less than the radius of the wind-blocking ring.

[0009] According to some embodiments of the present invention, each of the radially inner holes is located radially between two adjacent radially outer holes, and each of the radially outer holes is located radially between two adjacent radially inner holes.

[0010] According to some embodiments of the invention, each of the radially outer holes is axially aligned with a corresponding coil of the stator ring.

[0011] According to some embodiments of the present invention, each of the radially outer holes is axially aligned with portions of the corresponding two coils of the stator ring and the gap between the two coils.

[0012] According to some embodiments of the present invention, the thermally conductive shell includes another thermally conductive cover, which includes a plurality of heat dissipation fins.

[0013] According to some embodiments of the present invention, a motor structure includes a stator ring, a rotor, two deflectors, and two heat-conducting covers. The stator ring has a rotor housing space therein. The rotor is located within the rotor housing space. The two deflectors are disposed on two opposite sides of the rotor. The two heat-conducting covers are assembled to form a heat-conducting shell to house the stator ring, the rotor, and the two deflectors therein. Each heat-conducting cover has a plurality of radially inner holes and a plurality of radially outer holes, the plurality of radially inner holes being axially aligned with the corresponding deflector.

[0014] According to some embodiments of the present invention, a plurality of radially inner holes are axially aligned with the deflector, and a plurality of radially outer holes are axially aligned with the corresponding coils of the stator ring.

[0015] According to some embodiments of the present invention, the heat-conducting cover includes a wind-blocking ring located between a plurality of radially inner holes and a plurality of radially outer holes.

[0016] According to some embodiments of the present invention, each of the deflector blades comprises a plurality of blades, and the radial length of each blade is less than the radius of the wind-blocking ring.

[0017] According to some embodiments of the present invention, each of the deflector blades includes a plurality of radially inner blades and a plurality of radially outer blades, the radial lengths of the plurality of radially inner blades and the plurality of radially outer blades being less than the radius of the wind-blocking ring.

[0018] According to some embodiments of the present invention, each of the radially inner holes is located radially between two adjacent radially outer holes, and each of the radially outer holes is located radially between two adjacent radially inner holes.

[0019] According to some embodiments of the present invention, each of the radially outer holes is axially aligned with portions of the corresponding two coils of the stator ring and the gap between the two coils.

[0020] In summary, the motor structure of the present invention features deflectors on the rotor, which induce airflow within the heat-conducting housing to promote heat dissipation. At least one of the heat-conducting housing covers may be configured with radially inner and radially outer holes, allowing for smoother airflow into and out of the heat-conducting cover, reducing turbulence, and improving heat dissipation efficiency.

[0021] The above description will be given in detail below with reference to the embodiments, and a further explanation of the technical solution of the present invention will be provided. Attached Figure Description

[0022] To make the above and other objects, features, advantages and embodiments of the present invention more apparent and understandable, the accompanying drawings are described below:

[0023] Figure 1 A perspective view showing a motor structure according to an embodiment of the present invention;

[0024] Figure 2 To show Figure 1 Exploded view of the motor structure;

[0025] Figure 3 To show Figure 2 An exploded view of the rotor and two deflector blades;

[0026] Figure 4 A perspective view illustrating the motor structure of another embodiment of the present invention;

[0027] Figure 5 To show Figure 4 Exploded view of the motor structure; and

[0028] Figure 6 A side view illustrating a motor structure according to an embodiment of the present invention; and

[0029] Figure 7 A side view illustrating a motor structure according to another embodiment of the present invention.

[0030] The attached figures are labeled as follows:

[0031] 100a: Motor Structure

[0032] 100b: Motor Structure

[0033] 105: Thermal conductive shell

[0034] 106: Thermal housing

[0035] 110: Heat-conducting cover

[0036] 110a: Assembly hole

[0037] 110b: Radial inner hole

[0038] 110c: Radial outer hole

[0039] 110d: Wind choke ring

[0040] 120: Heat-conducting cover

[0041] 120a: Assembly hole

[0042] 120b: Heat dissipation fins

[0043] 120c: Inner wall

[0044] 130: Heat-conducting cover

[0045] 130a: Assembly hole

[0046] 130c: Inner wall

[0047] 140: Rotor

[0048] 141: Rotor body

[0049] 141a: Magnet trough

[0050] 142: Shaft

[0051] 144:Magnet

[0052] 146: Storage space

[0053] 147: Bearing

[0054] 149: Bearing

[0055] 150: Stator Ring

[0056] 150a: Ring-shaped body

[0057] 150b: Coil

[0058] 150c: Rotor housing space

[0059] 150d: gap

[0060] 162: Air deflector

[0061] 162a: Radial inner blade

[0062] 162b: Radial outer blade

[0063] 162c: Concave disc body

[0064] 162d: Shaft hole

[0065] 164: Air deflector

[0066] INR: Inner Ring Area

[0067] OTR: Outer Ring Area

[0068] h1: Radial length

[0069] h2: Radial length

[0070] R: radius Detailed Implementation

[0071] To provide a more detailed and complete description of the invention, reference can be made to the accompanying drawings and the various embodiments described below, in which the same numbers represent the same or similar elements. Furthermore, well-known elements and steps are not described in the embodiments to avoid unnecessarily limiting the invention. In the embodiments and claims, unless specifically defined herein, "a" and "the" may refer to one or more.

[0072] Please refer to Figure 1 and Figure 2 , Figure 1 A perspective view of a motor structure according to an embodiment of the present invention is shown. Figure 2 Show Figure 1 An exploded view of the motor structure. The motor structure 100a with active cooling includes a stator ring 150, a rotor 140, two deflectors (162, 164), and a heat-conducting shell 105. The stator ring 150 has a rotor housing space 150c located therein. The rotor 140 is located within the rotor housing space 150c of the stator ring 150. When current flows through the coil 150b of the stator ring 150, a magnetic field is generated, which interacts with the magnet 144 inside the rotor 140. When the magnetic fields of the stator ring 150 and the rotor 140 interact, torque is generated, causing the rotor 140 to begin rotating. This rotation is based on the magnetic force between the magnetic field generated by the current flowing through the coil and the magnet 144 inside the rotor.

[0073] Two deflectors (162, 164) are positioned on opposite sides of the rotor 140 and rotate synchronously with it, serving as the primary component for active heat dissipation. A shaft 142 passes through the assembled rotor 140 and the two deflectors (162, 164), and is rotatably connected to the heat-conducting cover 110 via bearing 147, and rotatably connected to the heat-conducting cover 120 via bearing 149. Therefore, the rotor 140 can rotate relative to the heat-conducting covers 110 and 120 via the shaft 142. Figure 2 In one embodiment, the motor structure 100a is configured with two deflectors (162, 164) on two opposite sides of the rotor 140. In other embodiments, the motor structure may also be configured with only a single deflector (e.g., deflector 162) on one side of the rotor 140.

[0074] The stator ring 150 includes an annular body 150a and multiple coils 150b, forming a rotor housing space 150c within it. When the motor structure 100a is assembled, the annular outer wall of the annular body 150a of the stator ring 150 contacts the annular inner wall 120c of the heat-conducting cover 120, and can be fixed by thermally conductive adhesive or by a tight fit between the outer and inner walls. When the motor structure 100a is operating, some of the electrical energy of the multiple coils 150b is dissipated as heat due to resistance when energized. The heat energy can be transferred to the heat-conducting cover 120 through the annular body 150a, and is dissipated more quickly by its multiple heat dissipation fins 120b, which is a passive cooling function. The multiple heat dissipation fins 120b are evenly distributed on the annular outer wall of the heat-conducting cover 120 and extend radially relative to the rotating shaft 142.

[0075] When the motor structure 100a is assembled, the heat-conducting cover 110 and the heat-conducting cover 120 are assembled to form a heat-conducting shell 105 to house the stator ring 150, the rotor 140, and two fan blades (162, 164). The two heat-conducting covers can be locked together using fasteners (not shown) through the assembly holes 110a and 120a of the heat-conducting cover 110 and 120, respectively. The heat-conducting cover 110 has multiple radially inward holes 110b and multiple radially outward holes 110c. When the motor structure 100a is operating, the rotation of the rotor 140 drives the two fan blades (162, 164), causing airflow within the heat-conducting shell 105. Because the heat-conducting cover 110 has multiple radially inward holes 110b and multiple radially outward holes 110c, these channels allow air to pass through and create convection within the heat-conducting shell 105. As the deflectors rotate, they generate airflow within the heat-conducting housing 105, promoting heat dissipation. This design utilizes the airflow driven by the rotor 140, guided by the channels, to circulate air within the heat-conducting housing 105, effectively improving the heat dissipation efficiency of the motor structure 100a.

[0076] On the heat-conducting cover 110, multiple radially inner holes 110b mainly serve as air intake channels when the fan blades rotate, while multiple radially outer holes 110c mainly serve as air exhaust channels. Between the multiple radially inner holes 110b and the multiple radially outer holes 110c, the heat-conducting cover 110 also has a baffle ring 110d to prevent turbulence between the air intake and exhaust. The heat-conducting cover 120 is designed differently from the heat-conducting cover 110; it does not have openings for air intake and exhaust channels, but it has heat dissipation fins 120b.

[0077] Please refer to Figure 2 and Figure 3 , Figure 3 To show Figure 2An exploded view of the rotor 140 and two deflector blades (162, 164). The two deflector blades (162, 164) have the same structural shape and are assembled on the rotor 140 in a mirror-symmetrical manner. Deflector blade 162 includes a concave disc body 162c, which has a shaft hole 162d through which the rotating shaft 142 passes. A plurality of radially inner blades 162a are disposed in the groove of the concave disc body 162c and extend radially outward from the shaft hole 162d. A plurality of radially outer blades 162b are disposed on the outer periphery of the concave disc body 162c and extend radially outward from the shaft hole 162d.

[0078] In some embodiments of the present invention, each radially inner blade 162a is radially positioned between two adjacent radially outer blades 162b. In some embodiments of the present invention, each radially outer blade 162b is radially positioned between two adjacent radially inner blades 162a. This blade configuration facilitates smoother radial dispersion of the introduced airflow, achieving better heat dissipation efficiency. In some embodiments of the present invention, both the radially inner blade 162a and the radially outer blade 162b are flat blades. In some embodiments of the present invention, the radial length h1 of each radially inner blade 162a and the radial length h2 of each radially outer blade 162b are smaller than the radius R of the baffle ring 110d, ensuring that airflow can reliably enter through the radially inner hole 110b without causing simultaneous partial airflow inflow and outflow through the radially outer hole 110c. The deflector 164 has the same structure and will not be described further.

[0079] The rotor 140 includes a rotor body 141 and a plurality of magnets 144. Each magnet 144 is embedded in a magnet groove 141a on the annular outer wall of the rotor body 141. The rotor body 141 also has a receiving space 146. In some embodiments of the invention, two deflectors (162, 164) are embedded in the polygonal receiving space 146 of the rotor body 141 with their polygonal concave disc bodies 162c. The rotor body 141 typically requires a material with good magnetic and mechanical properties. Common choices include magnetic steel, cobalt alloys, or iron-silicon alloys. Magnetic steel is an alloy with superior magnetic properties, suitable for manufacturing rotors because it can effectively retain and conduct magnetic fields. Cobalt alloys typically contain cobalt and other metallic elements, have high hysteresis loops and good heat resistance, making them ideal for high-performance motors. Iron-silicon alloys have good magnetic and mechanical properties, suitable for high-efficiency rotating mechanisms. These materials provide the necessary magnetic properties when manufacturing the rotor body, while also possessing sufficient strength and wear resistance to withstand prolonged operation and other mechanical stresses.

[0080] Please refer to the following at the same time Figure 4 and Figure 5 , Figure 4 A perspective view of a motor structure 100b according to another embodiment of the present invention is shown. Figure 5 Show Figure 4 An exploded view of motor structure 100b is shown. Motor structure 100b includes a stator ring 150, a rotor 140, two deflectors (162, 164), and a heat-conducting shell 106, but the design of the heat-conducting shell 106 of motor structure 100b differs from that of the heat-conducting shell 105 of motor structure 100a. The heat-conducting shell 106 of motor structure 100b is assembled from heat-conducting covers 110 and 130. When motor structure 100a is assembled, the two heat-conducting covers (not shown in the figure) can be locked together using fasteners through the assembly holes 110a of heat-conducting covers 110 and 130a of heat-conducting covers 130. The structure of heat-conducting cover 130 is similar to that of heat-conducting cover 110, and also has the same design as the radial inner hole 110b, radial outer hole 110c, and wind baffle ring 110d. Therefore, motor structure 100b can introduce air from both sides of the heat-conducting shell 106, while motor structure 100a can only introduce air from one side of the heat-conducting shell 105 (e.g., the side where the heat-conducting cover 110 is located).

[0081] When the motor structure 100b is assembled, the rotating shaft 142 passes through the assembled rotor 140 and the two deflectors (162, 164), and is rotatably connected to the heat-conducting cover 110 by bearing 147, and rotatably connected to the heat-conducting cover 130 by bearing 149. Therefore, the rotor 140 can rotate relative to the heat-conducting cover 110 and the heat-conducting cover 130 by the rotating shaft 142. The annular outer wall of the stator ring 150's annular body 150a contacts the annular inner wall 130c of the heat-conducting cover 130, and can be fixed by thermally conductive adhesive or by a tight fit between the outer and inner walls. When the motor structure 100b is operating, some of the electrical energy of the multiple coils 150b of the stator ring 150 is dissipated as heat due to resistance when energized. The deflector blades 162 and 164, driven to rotate by the rotor 140, can generate airflow inside the heat-conducting shell 106, and their air inlet and outlet channels are the radial inner and radial outer holes of the heat-conducting cover 110 and the heat-conducting cover 130, respectively.

[0082] Please refer to Figure 6The diagram shows a side view of a motor structure (100a, 100b) according to an embodiment of the present invention from the heat-conducting cover 110 side. The heat-conducting cover 110 includes an outer ring region OTR and an inner ring region INR, separated by a baffle ring 110d. The inner ring region INR has a plurality of radially inner holes 110b, mainly serving as air intake channels, and the outer ring region OTR has a plurality of radially outer holes 110c, mainly serving as air exhaust channels. In some embodiments of the present invention, the area of ​​a single radially outer hole 110c is approximately equal to the area of ​​a single radially inner hole 110b, and the number of radially outer holes 110c is equal to the number of radially inner holes 110b, thereby achieving a balance between air intake and exhaust of the heat-conducting cover 110. In some embodiments of the present invention, each radially inner hole 110b is located radially between two adjacent radially outer holes 110c, and / or each radially outer hole 110c is located radially between two adjacent radially inner holes 110b, thereby preventing the generation of turbulence between the intake and exhaust.

[0083] In some embodiments of the present invention, the inner ring region INR has a plurality of radially inner holes 110b axially aligned with the corresponding magnets 144 of the rotor and the deflector 162. Therefore, when the deflector 162 rotates, the plurality of radially inner holes 110b serve as the main air intake channels. In some embodiments of the present invention, the outer ring region OTR has a plurality of radially outer holes 110c axially aligned with the corresponding coils 150b of the stator ring 150. Therefore, the airflow after cooling the coils 150b serves as the main air outlet channels through the plurality of radially outer holes 110c.

[0084] Please refer to Figure 7 This shows a side view of a motor structure (100a, 100b) according to another embodiment of the present invention from the heat-conducting cover 110 side. This embodiment differs from... Figure 6 The embodiment mainly focuses on the relationship between the radial outer hole 110c and the coils of the stator ring 150. Specifically, each radial outer hole 110c is axially aligned with the corresponding two coils 150b of the stator ring and the gap 150d between the two coils, so that the airflow can be more smoothly discharged from the radial outer hole 110c.

[0085] The motor structure of the present invention has deflectors on the rotor to induce airflow in the heat-conducting shell, promoting heat dissipation. At least one of the heat-conducting shell covers may be provided with radially inner and radially outer holes, allowing airflow to enter and exit the heat-conducting cover more smoothly, reducing turbulence and improving heat dissipation efficiency.

[0086] Although the present invention has been disclosed above with reference to embodiments, it is not intended to limit the present invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A motor structure comprising: A stator ring having a rotor housing space located therein; A rotor is located within the rotor housing space; A fan blade is located on one side of the rotor; and A heat-conducting shell houses the stator ring, the rotor, and the deflector, wherein the heat-conducting shell includes a heat-conducting cover having a plurality of radially inner holes and a plurality of radially outer holes.

2. The motor structure of claim 1, wherein the plurality of radially inner holes are axially aligned with the deflector.

3. The motor structure as claimed in claim 1, wherein the heat-conducting cover includes a wind-blocking ring located between the plurality of radially inner holes and the plurality of radially outer holes.

4. The motor structure as claimed in claim 3, wherein the deflector comprises a plurality of blades, each blade having a radial length less than the radius of the choke ring.

5. The motor structure of claim 1, wherein each of the radially inner holes is located radially between two adjacent radially outer holes, and each of the radially outer holes is located radially between two adjacent radially inner holes.

6. The motor structure of claim 1, wherein each of the radially outer holes is axially aligned with a corresponding coil of the stator ring.

7. The motor structure of claim 1, wherein each of the radially outer holes is axially aligned with portions of the corresponding two coils of the stator ring and the gap between the two coils.

8. The motor structure as claimed in claim 1, wherein the heat-conducting housing includes another heat-conducting cover, the other heat-conducting cover including a plurality of heat dissipation fins.

9. A motor structure comprising: A stator ring having a rotor housing space located therein; A rotor is located within the rotor housing space; Two deflector vanes are located on two opposite sides of the rotor; and Two heat-conducting covers are assembled to form a heat-conducting shell to house the stator ring, the rotor and the two deflectors therein, wherein each heat-conducting cover has a plurality of radially inner holes and a plurality of radially outer holes.

10. The motor structure of claim 9, wherein the plurality of radially inner holes are axially aligned with the deflector, and the plurality of radially outer holes are axially aligned with the corresponding coils of the stator ring.

11. The motor structure of claim 9, wherein each of the heat-conducting covers includes a baffle ring located between the plurality of radially inner holes and the plurality of radially outer holes.

12. The motor structure of claim 11, wherein each of the deflector blades comprises a plurality of blades, and the radial length of each blade is less than the radius of the choke ring.

13. The motor structure of claim 11, wherein each of the deflector blades comprises a plurality of radially inner blades and a plurality of radially outer blades, the radial lengths of the plurality of radially inner blades and the plurality of radially outer blades being less than the radius of the choke ring.

14. The motor structure of claim 9, wherein each of the radially inner holes is located radially between two adjacent radially outer holes, and each of the radially outer holes is located radially between two adjacent radially inner holes.

15. The motor structure of claim 9, wherein each of the radially outer holes is axially aligned with portions of the corresponding two coils of the stator ring and the gap between the two coils.

Images