A three-phase asynchronous motor and its stator mounting structure

Abstract

The present invention provides a three-phase asynchronous motor and a stator mounting structure thereof. The stator mounting structure includes a housing, a rotor, a stator core, and a stator winding. The stator winding is embedded in a positioning groove of the stator core. The stator core is fixed inside the housing. The rotor is rotatably connected to the housing and passes through the inside of the stator winding. It further includes a heat dissipation seat located outside the stator core. A heat conduction tube is fixedly connected to the stator core. A connection hole is formed in the heat dissipation seat. The heat dissipation seat is provided with a water inlet hole and a water outlet hole both communicating with the connection hole. Two ends of the heat conduction tube are respectively connected to the water inlet hole and the water outlet hole. A piston sleeve is slidably connected in the connection hole. A water guiding hole is formed in the piston sleeve. A one-way structure is arranged on the water guiding hole. The rotor is rotatably connected to the heat dissipation seat. The rotor rotates and drives the piston sleeve to reciprocate through an elastic structure, so as to achieve the purpose of improving heat dissipation performance.

Description

Technical Field

[0001] The present invention relates to an electric motor, and in particular, to a three-phase asynchronous motor and a stator mounting structure thereof. Background Art

[0002] At present, a Chinese patent with the authorization announcement number CN217769708U discloses a three-phase motor, including: an inner housing, which is in the shape of a ring column with both ends communicating, and an installation cavity is formed inside the inner housing, and a stator and a rotor are arranged in the installation cavity; an outer housing, which is in a ring shape, and one end is a closed end with a shaft hole on the closed end, the other end is an open end, and a plurality of heat dissipation ribs evenly distributed in a circumferential manner are arranged on the outer side of the outer housing; and a rear end cover, which covers the open end of the outer housing and is fixed to the outer housing by threads; the outer housing, the inner housing and the rear end cover are all made of aluminum alloy material; and both ends of the heat dissipation cavity are provided with heat dissipation grooves communicating with the inside and outside of the motor, so as to achieve a good heat dissipation effect.

[0003] This kind of three-phase motor only relies on heat dissipation grooves and heat dissipation ribs for passive heat dissipation. For the situation of long-term high-power operation, this passive heat dissipation method is often insufficient. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a three-phase asynchronous motor and a stator mounting structure thereof, so as to achieve the purpose of improving heat dissipation.

[0005] To solve the above technical problems, the technical solution of the present invention is: a stator mounting structure, including a housing, a rotor, a stator core and a stator winding, the stator winding is embedded in a positioning groove of the stator core, the stator core is fixed inside the housing, the rotor is rotatably connected to the housing and passes through the inside of the stator winding, and further includes a heat dissipation seat located outside the stator core, a heat conduction pipe is fixedly connected to the stator core, a connection hole is opened on the heat dissipation seat, a water inlet hole and a water outlet hole both communicating with the connection hole are opened on the heat dissipation seat, both ends of the heat conduction pipe are respectively connected to the water inlet hole and the water outlet hole, a piston sleeve is slidably connected in the connection hole, a water guiding hole is opened on the piston sleeve, a one-way structure is arranged on the water guiding hole, the rotor is rotatably connected to the heat dissipation seat, and the rotor rotates and makes the piston sleeve reciprocate through an elastic structure.

[0006] To implement the above technical solution, the stator winding is fixed on the stator core, the stator core is fixed on the shell, water is injected into the heat sink and then introduced into the heat pipe, the rotor rotates, the rotor moves the piston sleeve through the elastic structure, water passes through the water guide hole, and then the water guide hole is blocked by the one-way structure, and then the piston sleeve is reset by the elastic force of the elastic structure, so that the water can be pushed from the water inlet hole to the water outlet hole, and the water that has been heat-dissipated is introduced from the water outlet hole into the heat pipe, the heat of the stator core is introduced into the water through the heat pipe, and the water is sucked into the heat sink from the water inlet pipe. Since the heat sink is located outside the stator core, the water can be quickly cooled to achieve the effect of active heat dissipation.

[0007] As a preferred solution of the present invention, the elastic structure includes an inclined plate, an elastic member, a support rod, a positioning ring, and a positioning circular groove. The support rod is fixed to the inner wall of the piston sleeve, the inclined plate is fixed to the outer wall of the rotor and is used to abut against the support rod, the two ends of the elastic member are respectively connected to the heat sink and the piston sleeve, the positioning ring is fixed to the inner wall of the heat sink, the positioning circular groove is provided on the outer wall of the piston sleeve, and the positioning ring is used to abut against the inner wall of the positioning circular groove;

[0008] The inclined plate rotates to move the support rod along the length direction of the inclined plate. After the inclined plate is separated from the support rod, the support rod is reset due to the elastic force of the elastic member.

[0009] To implement the above technical solution, the rotor rotates, the inclined plate contacts the support rod, and the support rod moves along the length direction of the inclined plate, so that the elastic member is compressed and the piston sleeve moves along its own axial direction. As the rotor rotates, after the inclined plate is separated from the support rod, the piston sleeve is reset by the elastic force of the elastic member. At this time, the water can be pushed to flow through the piston sleeve.

[0010] As a preferred solution of the present invention, a support wheel is rotatably connected to the support rod, and the support rod contacts the inclined plate through the support wheel.

[0011] By implementing the above technical solution, the supporting wheel rolls along the inclined plate, which reduces wear and extends the service life.

[0012] As a preferred solution of the present invention, the one-way structure comprises a horizontal plate, a spring sheet, and a flap, wherein the flap is hinged on the outer wall of the piston sleeve and is used to block the water guide hole, the two ends of the spring sheet are respectively connected to the flap and the piston sleeve, and the horizontal plate is fixed to the end of the inclined plate;

[0013] The support rod moves along the inclined plate, and the flap is opened from the water guide hole due to the flow of water. When the support rod moves along the inclined plate to the horizontal plate, the spring sheet blocks the water guide hole with the flap.

[0014] To implement the above technical solution, the rotor rotates, the support rod moves along the length direction of the inclined plate, the piston sleeve moves along its own axial direction, water flows through the water guide hole. At the same time, the water flow lifts the flap from the water guide hole. When the support rod moves from the end of the inclined plate to the cross plate, the elastic force of the elastic piece makes the flap block the water guide hole. Subsequently, the support rod separates from the inclined plate, and the water can then move.

[0015] As a preferred embodiment of the present invention, a fixed rod extending towards the rotor is fixedly connected to the outer shell. The rotor is connected to a rotating seat through a linkage structure. The rotating seat is rotatably connected to the fixed rod. A rotating shaft is rotatably connected to the rotating seat. The rotating shaft rotates around the fixed rod and the rotating shaft rotates itself through a conduction structure. A main fan blade is fixedly connected to the rotating shaft.

[0016] To implement the above technical solution, the rotor rotates, pressing the water in the heat dissipation seat into the heat conduction tube. The water in the heat conduction tube is sucked into the heat dissipation seat to achieve the function of water cooling. At the same time, when the rotor rotates, the rotating seat is rotated through the linkage structure. While the rotating shaft rotates around the fixed rod, it also rotates itself. The main fan blade rotates, and the generated wind blows towards the heat conduction tube and the heat dissipation seat to further improve the heat dissipation effect on the heat dissipation seat and the heat conduction tube.

[0017] As a preferred embodiment of the present invention, the conduction structure includes a first fixed column, a second fixed column, a first arc-shaped plate, and a second arc-shaped plate. The first fixed column is fixed to the fixed rod. A plurality of the first arc-shaped plates are fixed to the outer wall of the first fixed column and are evenly distributed along the axis of the first fixed column. The second fixed column is fixed to the rotating shaft. A plurality of the second arc-shaped plates are fixed to the second fixed column and are evenly distributed along the axis of the second fixed column. The first arc-shaped plate meshes with the second arc-shaped plate.

[0018] To implement the above technical solution, the linkage structure drives the rotating seat to rotate. The first arc-shaped plate and the second arc-shaped plate mesh, causing the rotating shaft to rotate. The main fan blade rotates with the rotating shaft to generate wind. And because the main fan blade rotates around the fixed rod, the wind can blow out in a planar manner, greatly improving the heat dissipation effect on the heat dissipation seat and the heat conduction tube.

[0019] As a preferred embodiment of the present invention, the linkage structure includes a first bevel gear and a second bevel gear. The first bevel gear is fixed to the rotor. The second bevel gear is fixed to the rotating seat. The first bevel gear meshes with the second bevel gear.

[0020] To implement the above technical solution, when the rotor rotates, the first bevel gear rotates synchronously with the rotor. The second bevel gear rotates with the rotation of the first bevel gear, thereby driving the rotating seat to rotate by the second bevel gear.

[0021] As a preferred embodiment of the present invention, a secondary fan blade is fixedly connected to the rotor.

[0022] Implementing the above technical solution, during the rotation of the rotor, the secondary fan blade rotates synchronously with the rotor to further enhance the heat dissipation effect on the heat dissipation base and the heat conduction pipe.

[0023] The present invention also discloses a three-phase asynchronous motor, including a protective cover, and also including the stator mounting structure as described above. The protective cover is fixed to the outer shell, and the rotor is located inside the protective cover.

[0024] Implementing the above technical solution, the protective cover can enhance the protection effect on the rotor.

[0025] As a preferred embodiment of the present invention, a heat dissipation plate is fixedly connected to the outer shell, and the heat dissipation plate is close to the stator core.

[0026] Implementing the above technical solution, it further enhances the heat dissipation effect on the stator core.

[0027] In summary, the present invention has the following beneficial effects:

[0028] 1. When the rotor rotates, the water pressure in the heat dissipation base is pressed into the heat conduction pipe, and the water in the heat conduction pipe is sucked into the heat dissipation base, realizing the function of water cooling;

[0029] 2. When the rotor rotates, while the main fan blade rotates self - rotatably, it can also revolve along the fixed rod, and the generated wind blows towards the heat conduction pipe and the heat dissipation base to further enhance the heat dissipation effect on the heat dissipation base and the heat conduction pipe;

[0030] 3. When the rotor rotates, the secondary fan blade rotates, the wind can blow towards the heat dissipation plate, and at the same time, it can suck the external air into the protective cover, so as to greatly enhance the heat dissipation effect of the main fan blade on the heat dissipation base and the heat conduction pipe and the heat dissipation effect of the secondary fan blade on the heat dissipation plate, thereby greatly enhancing the heat dissipation effect on the stator core. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram showing the position between the stator core and the outer shell;

[0032] Figure 2 It is a schematic diagram showing the position of the secondary fan blade;

[0033] Figure 3 It is a schematic diagram showing the connection structure between the heat conduction pipe and the heat dissipation base;

[0034] Figure 4 It is a schematic diagram showing the structure of the conduction structure;

[0035] Figure 5 It is a schematic diagram showing the structure of the linkage structure;

[0036] Figure 6 It is a schematic diagram showing the exploded structure of the heat dissipation base;

[0037] Figure 7 It is a schematic diagram showing the position of the one-way structure;

[0038] Figure 8 It is a schematic diagram showing the position of the protective cover;

[0039] Figure 9 It is a schematic diagram showing the position of the junction box.

[0040] Reference numerals: 1, housing; 11, stator core; 12, stator winding; 2, rotor; 3, heat conduction tube; 4, heat dissipation base; 41, connection hole; 42, water inlet hole; 43, water outlet hole; 44, guiding groove; 5, piston sleeve; 51, guiding rod; 6, elastic structure; 61, inclined plate; 62, elastic member; 63, support rod; 631, support wheel; 64, positioning ring; 65, positioning circular groove; 7, one-way structure; 71, horizontal plate; 72, elastic sheet; 73, flap; 81, fixing rod; 82, rotating seat; 83, linkage structure; 84, first bevel gear; 85, second bevel gear; 86, conduction structure; 861, first fixing column; 862, second fixing column; 863, first arc-shaped plate; 864, second arc-shaped plate; 87, auxiliary fan blade; 88, rotating shaft; 89, main fan blade; 91, protective cover; 92, ventilation hole; 93, heat dissipation plate; 94, junction box. Specific embodiments

[0041] The following further details the specific embodiments of the present invention in conjunction with the accompanying drawings, so that the technical solutions of the present invention are easier to understand and master.

[0042] Embodiment 1: A stator mounting structure includes a housing 1, a rotor 2, a stator core 11, and a stator winding 12. The stator winding 12 is embedded in the positioning groove of the stator core 11, the stator core 11 is fixed inside the housing 1, and the rotor 2 is rotatably connected to the housing 1 and passes through the inside of the stator winding 12. The rotor 2, the stator core 11, and the stator winding 12 are coaxially arranged.

[0043] The heat dissipation base 4 is located outside the stator core 11. A heat conduction tube 3 made of copper is fixedly connected to the stator core 11. A connection hole 41 is provided inside the heat dissipation base 4, and a water inlet hole 42 and a water outlet hole 43 that are both communicated with the connection hole 41 are provided in the heat dissipation base 4. The water inlet hole 42 and the water outlet hole 43 are respectively located at both ends of the heat dissipation base 4. Both ends of the heat conduction tube 3 are fixedly connected to the water inlet hole 42 and the water outlet hole 43 respectively. The heat dissipation base 4 is supported by the heat conduction tube 3. For improving stability, the heat dissipation base 4 can also be fixed to the inner wall of the housing 1 with a support rod.

[0044] A piston sleeve 5 is slidably connected along its own axial direction within a connection hole 41. A guiding rod 51 is fixedly connected to the outer wall of the piston sleeve 5. A guiding groove 44 is formed on the inner wall of the connection hole 41, and the guiding rod 51 is slidably connected within the guiding groove 44. The length direction of the guiding rod 51 is parallel to the axial direction of the connection hole 41. The connection hole 41, the piston sleeve 5, and the rotor 2 are coaxially arranged. A water guiding hole is formed on the bottom wall of the piston sleeve 5, and a one-way structure 7 is provided on the water guiding hole.

[0045] The end of the rotor 2 is rotatably connected to the heat dissipation seat 4, and there is a oil seal between the rotor 2 and the heat dissipation seat 4 to improve the sealing performance. The rotor 2 rotates and drives the piston sleeve 5 to reciprocate through an elastic structure 6.

[0046] The elastic structure 6 includes an inclined plate 61, an elastic member 62, a support rod 63, a positioning ring 64, and a positioning circular groove 65. The support rod 63 is fixed to the inner wall of the piston sleeve 5 and is arranged along the radial direction of the piston sleeve 5. The inclined plate 61 is fixed to the outer wall of the rotor 2 and is used to abut against the support rod 63. The elastic member 62 is a spring. The two ends of the elastic member 62 are respectively connected to the heat dissipation seat 4 and the piston sleeve 5. The positioning ring 64 is fixed to the inner wall of the heat dissipation seat 4 and is coaxially arranged with the heat dissipation seat 4. The positioning circular groove 65 is formed on the outer wall of the piston sleeve 5 and is coaxially arranged with the positioning ring 64. The positioning ring 64 is used to abut against the inner wall of the positioning circular groove 65 to achieve the positioning and anti - detachment of the piston sleeve 5.

[0047] The rotor 2 drives the inclined plate 61 to rotate. The inclined plate 61 abuts against the support rod 63, and the support rod 63 moves along the length direction of the inclined plate 61, causing the piston sleeve 5 to move. After the inclined plate 61 separates from the support rod 63, the support rod 63 is reset due to the elastic force of the elastic member 62, that is, the positioning ring 64 abuts against the inner wall of the positioning circular groove 65, and the piston sleeve 5 is reset.

[0048] The one - way structure 7 includes a cross - plate 71, a spring piece 72, and a flap 73. The flap 73 is hinged to the outer wall of the piston sleeve 5 and is used to block the water guiding hole. The spring piece 72 is a spring, and the two ends of the spring piece 72 are respectively fixedly connected to the flap 73 and the piston sleeve 5. The cross - plate 71 is fixed to the end of the inclined plate 61.

[0049] The support rod 63 moves along the inclined plate 61, and the flap 73 is lifted from the water guiding hole due to the water flow. When the support rod 63 moves onto the cross - plate 71 along the inclined plate 61, the spring piece 72 blocks the flap 73 against the water guiding hole. After the support rod 63 separates from the cross - plate 71, the piston sleeve 5 is reset by the elastic force of the elastic member 62. At the same time, the water flow is pushed. The water is pushed from the water inlet hole 42 to the water outlet hole 43, so that the water circulates within the heat conduction tube 3.

[0050] In order to reduce wear, a support wheel 631 is rotatably connected to the support rod 63, and the support rod 63 abuts against the inclined plate 61 through the support wheel 631.

[0051] A fixing rod 81 extending towards the rotor 2 is fixedly connected to the outer shell 1, and the fixing rod 81 is arranged along the radial direction of the rotor 2. The rotor 2 is connected with a rotating seat 82 through a linkage structure 83. The rotating seat 82 is rotatably connected to the fixing rod 81.

[0052] The linkage structure 83 includes a first bevel gear 84 and a second bevel gear 85. The first bevel gear 84 is fixed on the rotor 2 and coaxially arranged, and the second bevel gear 85 is fixed on the rotating seat 82 and coaxially arranged. The first bevel gear 84 meshes with the second bevel gear 85.

[0053] A rotating shaft 88 is rotatably connected to the rotating seat 82, and a main fan blade 89 is fixedly connected to the rotating shaft 88. The rotating shaft 88 rotates around the fixing rod 81 and rotates itself through a conduction structure 86, so that the main fan blade 89 rotates, and the generated wind dissipates heat from the heat conduction tube 3 and the heat dissipation seat 4.

[0054] The conduction structure 86 includes a first fixing column 861, a second fixing column 862, a first arc plate 863 and a second arc plate 864. The first fixing column 861 is fixed on the fixing rod 81 and coaxially arranged. A plurality of first arc plates 863 are fixed on the outer wall of the first fixing column 861 and are evenly distributed along the axis of the first fixing column 861. The second fixing column 862 is fixed on the rotating shaft 88 and coaxially arranged, and a plurality of second arc plates 864 are fixed on the second fixing column 862 and are evenly distributed along the axis of the second fixing column 862. The first arc plate 863 meshes with the second arc plate 864.

[0055] Accordingly, during the rotation of the rotor 2, water circulates in the heat conduction tube 3. At the same time, the main fan blade 89 rotates, and the generated wind dissipates heat from the heat conduction tube 3 and the heat dissipation seat 4. And because the main fan blade 89 rotates along the axis of the fixing rod 81, a large range of air flow can be generated, so as to greatly improve the heat dissipation effect on the heat conduction tube 3 and the heat dissipation seat 4.

[0056] A secondary fan blade 87 is fixedly connected to the rotor 2, and a plurality of secondary fan blades 87 are evenly distributed along the axis of the rotor 2. The secondary fan blade 87 is located between the fixing rod 81 and the stator core 11.

[0057] During the rotation of the rotor 2, the secondary fan blade 87 rotates with the rotor 2, and the generated wind can blow towards the heat conduction tube 3 and the heat dissipation seat 4, further improving the heat dissipation effect.

[0058] Embodiment 2: A three-phase asynchronous motor includes a protective cover 91 and also includes a stator mounting structure in Embodiment 1. The protective cover 91 is fixed to the outer shell 1, and the rotor 2 is located inside the protective cover 91. A plurality of ventilation holes 92 are opened at the end of the protective cover 91.

[0059] A heat dissipation plate 93 is fixedly connected to the outer shell 1. The heat dissipation plate 93 is close to the stator core 11. The heat dissipation plate 93 is made of copper and is located between the auxiliary fan blade 87 and the stator core 11. A junction box 94 is fixedly connected to the outer wall of the outer shell 1, and the wires of the stator winding 12 are connected to the junction box 94.

[0060] Of course, the above are only typical examples of the present invention. In addition, the present invention can also have many other specific implementation manners. Any technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A stator mounting structure, comprising a housing, a rotor, a stator core and a stator winding, wherein the stator winding is embedded in a positioning groove of the stator core, the stator core is fixed inside the housing, and the rotor is rotatably connected to the housing and passes through the inside of the stator winding, wherein: The heat dissipation device is a heat dissipation device, and a heat dissipation device is used to dissipate heat from the heat source to the heat source, wherein the heat dissipation device is provided with a heat dissipation hole, and the heat dissipation device is provided with a heat dissipation hole, and the heat dissipation device is provided with a heat dissipation hole, and the heat dissipation hole ... The inclined plate rotates to move the support rod along the length direction of the inclined plate. After the inclined plate is separated from the support rod, the support rod is reset due to the elastic force of the elastic member.

2. A stator mounting structure according to claim 1, characterized in that: The support rod is rotatably connected with a support wheel, and the support rod contacts the inclined plate through the support wheel.

3. A stator mounting structure according to claim 1, characterized in that: The one-way structure includes a horizontal plate, a spring sheet, and a flap. The flap is hinged on the outer wall of the piston sleeve and is used to block the water guide hole. The two ends of the spring sheet are respectively connected to the flap and the piston sleeve. The horizontal plate is fixed to the end of the inclined plate. The support rod moves along the inclined plate, and the flap is opened from the water guide hole due to the flow of water. When the support rod moves along the inclined plate to the horizontal plate, the spring sheet blocks the water guide hole with the flap.

4. A stator mounting structure according to claim 3, characterized in that: The outer shell is fixedly connected to a fixed rod extending toward the rotor, the rotor is connected to a rotating seat through a linkage structure, the rotating seat is rotatably connected to the fixed rod, the rotating seat is rotatably connected to a rotating shaft, the rotating shaft rotates around the fixed rod and rotates by a conductive structure, and the rotating shaft is fixedly connected to a main fan blade.

5. A stator mounting structure according to claim 4, characterized in that: The conductive structure includes a first fixed column, a second fixed column, a first curved plate, and a second curved plate. The first fixed column is fixed on a fixed rod, a plurality of the first curved plates are fixed on an outer wall of the first fixed column and are evenly distributed along the axis of the first fixed column, the second fixed column is fixed on a rotating shaft, a plurality of the second curved plates are fixed on the second fixed column and are evenly distributed along the axis of the second fixed column, and the first curved plate is meshed with the second curved plate.

6. A stator mounting structure according to claim 5, characterized in that: The linkage structure comprises a first bevel gear and a second bevel gear. The first bevel gear is fixed on the rotor, the second bevel gear is fixed on the rotating seat, and the first bevel gear is meshed with the second bevel gear.

7. A stator mounting structure according to claim 6, characterized in that: Auxiliary blades are fixedly connected to the rotor.

8. A three-phase asynchronous motor, including a protective cover, characterized in that: It also includes a stator mounting structure as described in any one of claims 1 to 7, wherein the protective cover is fixed on the outer shell, and the rotor is located inside the protective cover.

9. A three-phase asynchronous motor according to claim 8, characterized in that: A heat sink is fixedly connected to the shell, and the heat sink is close to the stator core.

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