Three-phase asynchronous motor and stator mounting structure thereof

Abstract

The invention provides a three-phase asynchronous motor and a stator installation structure thereof, and the stator installation structure comprises 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 in the housing, and the rotor is fixed in the housing. The rotor is rotationally connected to the shell and penetrates through the interior of the stator winding, the motor further comprises a heat dissipation base located outside the stator iron core, a heat conduction pipe is fixedly connected to the stator iron core, a connecting hole is formed in the heat dissipation base, a water inlet hole and a water outlet hole are formed in the heat dissipation base, and the water inlet hole and the water outlet hole are both communicated with the connecting hole. The two ends of the heat conduction pipe are connected with the water inlet hole and the water outlet hole respectively, a piston sleeve is slidably connected into the connecting hole, a water guide hole is formed in the piston sleeve, a one-way structure is arranged on the water guide hole, the rotor is rotationally connected to the heat dissipation base, and the rotor rotates and enables the piston sleeve to move in a reciprocating mode through an elastic structure. The purpose of improving the heat dissipation performance is achieved.

Description

Technical Field

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

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

[0003] This type of three-phase motor only relies on heat sinks and heat ribs for passive heat dissipation. For long-term high-power operation, this passive heat dissipation method is often not enough. Summary of the invention

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

[0005] In order to solve the above technical problems, the technical solution of the present invention is: a stator installation structure, including a shell, 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 to the inside of the shell, the rotor is rotatably connected to the shell and passes through the inside of the stator winding, and also includes a heat sink located outside the stator core, the stator core is fixedly connected to a heat conducting pipe, a connecting hole is provided on the heat sink, a water inlet hole and a water outlet hole are provided on the heat sink, both of which are connected to the connecting hole, the two ends of the heat conducting pipe are respectively connected to the water inlet hole and the water outlet hole, a piston sleeve is slidably connected in the connecting hole, the piston sleeve is provided with a water conducting hole, a one-way structure is provided on the water conducting hole, the rotor is rotatably connected to the heat sink, the rotor rotates and causes the piston sleeve to reciprocate through the 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; 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.

[0008] 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.

[0009] 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.

[0010] By implementing the above technical solution, the supporting wheel rolls along the inclined plate, which reduces wear and extends the service life.

[0011] 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; 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.

[0012] 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, and at the same time, the water flow lifts the flap from the water guide hole, and when the support rod moves from the end of the inclined plate to the cross plate, the flap blocks the water guide hole through the elastic force of the spring sheet, and then the support rod is separated from the inclined plate, so that the water can move.

[0013] As a preferred solution of the present invention, a fixed rod extending toward 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 rotates by itself through a conducting structure, and the rotating shaft is fixedly connected to the main fan blade.

[0014] To implement the above technical solution, the rotor rotates, pressurizing the water in the heat sink into the heat pipe, and the water in the heat pipe is sucked into the heat sink to achieve the effect of water cooling. At the same time, the rotor rotates, and the rotating seat is rotated through the linkage structure. The rotating shaft rotates around the fixed rod and rotates on its own at the same time. The main fan blades rotate, and the generated wind blows toward the heat pipe and the heat sink to further enhance the heat dissipation effect of the heat sink and the heat pipe.

[0015] As a preferred embodiment of the present invention, 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.

[0016] To implement the above technical solution, the linkage structure drives the rotating seat to rotate, the first arc plate and the second arc plate engage to rotate the rotating shaft, and the main fan blades can generate wind as the rotating shaft rotates. Moreover, since the main fan blades rotate around the fixed rod, the wind can blow outward in a planar manner, greatly improving the heat dissipation effect of the heat sink and the heat pipe.

[0017] As a preferred solution of the present invention, the linkage structure includes 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.

[0018] To implement the above technical solution, the rotor rotates, the first bevel gear rotates synchronously with the rotor, and the second bevel gear rotates with the rotation of the first bevel gear, so that the second bevel gear drives the rotating seat to rotate.

[0019] As a preferred solution of the present invention, auxiliary blades are fixedly connected to the rotor.

[0020] To implement the above technical solution, during the rotation of the rotor, the auxiliary fan blades rotate synchronously with the rotor to further enhance the heat dissipation effect on the heat sink and the heat pipe.

[0021] The invention also discloses a three-phase asynchronous motor, comprising a protective cover and a stator mounting structure, wherein the protective cover is fixed on the outer shell, and the rotor is located inside the protective cover.

[0022] By implementing the above technical solution, the protective cover can enhance the protective effect on the rotor.

[0023] As a preferred solution of the present invention, a heat sink is fixedly connected to the shell, and the heat sink is close to the stator core.

[0024] Implementing the above technical solution can further improve the heat dissipation effect on the stator core.

[0025] In summary, the present invention has the following beneficial effects: 1. The rotor rotates, pressing the water in the heat sink into the heat pipe, and the water in the heat pipe is sucked into the heat sink to achieve water cooling; 2. The rotor rotates, and the main fan blades can also revolve along the fixed rod while rotating. The generated wind blows to the heat pipe and the heat sink to further improve the heat dissipation effect of the heat sink and the heat pipe; 3. The rotor rotates, the auxiliary fan blades turn, and the wind can blow toward the heat sink. At the same time, the external air can be sucked into the protective cover, so as to greatly enhance the heat dissipation effect of the main fan blades on the heat sink and the heat pipe, and enhance the heat dissipation effect of the auxiliary fan blades on the heat sink, thereby greatly enhancing the heat dissipation effect of the stator core. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram showing the position between the stator core and the housing; Figure 2 A schematic diagram showing the position of the auxiliary fan blades; Figure 3 A schematic diagram showing the connection structure between the heat pipe and the heat sink; Figure 4 A schematic diagram showing the structure of the conduction structure; Figure 5 A structural diagram showing the linkage structure; Figure 6 This is a schematic diagram showing the exploded structure of the heat sink; Figure 7 A schematic diagram showing the location of a one-way structure; Figure 8A schematic diagram showing the position of the protective cover; Fig. 9 A schematic diagram showing the location of the junction box.

[0027] Figure numerals: 1, housing; 11, stator core; 12, stator winding; 2, rotor; 3, heat pipe; 4, heat sink; 41, connection hole; 42, water inlet hole; 43, water outlet hole; 44, guide groove; 5, piston sleeve; 51, guide 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, cross plate; 7 2. Spring piece; 73. Flap; 81. Fixed rod; 82. Rotating seat; 83. Linkage structure; 84. First bevel gear; 85. Second bevel gear; 86. Conducting structure; 861. First fixed column; 862. Second fixed column; 863. First curved plate; 864. Second curved plate; 87. Auxiliary fan blade; 88. Rotating shaft; 89. Main fan blade; 91. Protective cover; 92. Ventilation hole; 93. Heat sink; 94. Junction box. DETAILED DESCRIPTION

[0028] The specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0029] Embodiment 1: A stator mounting structure comprises a housing 1, a rotor 2, a stator core 11 and a stator winding 12. The stator winding 12 is embedded in a 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.

[0030] The heat sink 4 is located outside the stator core 11, and a heat pipe 3 made of copper is fixedly connected to the stator core 11. A connection hole 41 is provided inside the heat sink 4, and a water inlet hole 42 and a water outlet hole 43 are provided in the heat sink 4, both of which are connected to the connection hole 41. The water inlet hole 42 and the water outlet hole 43 are respectively located at both ends of the heat sink 4. The two ends of the heat pipe 3 are fixedly connected to the water inlet hole 42 and the water outlet hole 43. The heat sink 4 is supported by the heat pipe 3. In order to improve stability, the heat sink 4 can also be fixed to the inner wall of the housing 1 with a support rod.

[0031] The piston sleeve 5 is slidably connected in the connecting hole 41 along its axial direction, a guide rod 51 is fixedly connected to the outer wall of the piston sleeve 5, a guide groove 44 is provided on the inner wall of the connecting hole 41, and the guide rod 51 is slidably connected in the guide groove 44. The length direction of the guide rod 51 is parallel to the axial direction of the connecting hole 41. The connecting hole 41, the piston sleeve 5 and the rotor 2 are coaxially arranged. A water guide hole is provided on the bottom wall of the piston sleeve 5, and a one-way structure 7 is provided on the water guide hole.

[0032] The end of the rotor 2 is rotatably connected to the heat sink 4, and an oil seal is provided between the rotor 2 and the heat sink 4 to improve the sealing performance. The rotor 2 rotates and causes the piston sleeve 5 to reciprocate through the elastic structure 6.

[0033] 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 the support rod 63 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 contact with 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 sink 4 and the piston sleeve 5. The positioning ring 64 is fixed to the inner wall of the heat sink 4, and the positioning ring 64 is coaxially arranged with the heat sink 4. The positioning circular groove 65 is opened on the outer wall of the piston sleeve 5, and the positioning circular groove 65 is coaxially arranged with the positioning ring 64. The positioning ring 64 is used to contact with the inner wall of the positioning circular groove 65 to achieve the positioning and anti-slip function of the piston sleeve 5.

[0034] The rotor 2 drives the swash plate 61 to rotate, and the swash plate 61 contacts the support rod 63, and the support rod 63 moves along the length direction of the swash plate 61, and the piston sleeve 5 moves. After the swash plate 61 and the support rod 63 are separated, the support rod 63 is reset due to the elastic force of the elastic member 62, that is, the positioning ring 64 contacts the inner wall of the positioning circular groove 65, and the piston sleeve 5 is reset.

[0035] The one-way structure 7 includes a horizontal plate 71, a spring piece 72, and a flap 73. The flap 73 is hinged on the outer wall of the piston sleeve 5 and is used to block the water guide hole. The spring piece 72 is a spring, and the two ends of the spring piece 72 are fixedly connected to the flap 73 and the piston sleeve 5 respectively. The horizontal plate 71 is fixed to the end of the inclined plate 61.

[0036] The support rod 63 moves along the inclined plate 61, and the flap 73 is lifted from the water guide hole due to the flow of water. When the support rod 63 moves along the inclined plate 61 to the transverse plate 71, the spring sheet 72 blocks the water guide hole with the flap 73. After the support rod 63 is separated from the transverse plate 71, the elastic force of the elastic member 62 resets the piston sleeve 5, and at the same time, pushes the water flow to move. The water is pushed from the water inlet hole 42 to the water outlet hole 43, so that the water circulates in the heat conduction pipe 3.

[0037] In order to reduce wear, a support wheel 631 is rotatably connected to the support rod 63 , and the support rod 63 contacts the inclined plate 61 through the support wheel 631 .

[0038] A fixing rod 81 extending toward the rotor 2 is fixedly connected to the housing 1, and the fixing rod 81 is arranged along the radial direction of the rotor 2. The rotor 2 is connected to a rotating seat 82 via a linkage structure 83. The rotating seat 82 is rotatably connected to the fixing rod 81.

[0039] 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 is coaxially arranged, and the second bevel gear 85 is fixed on the rotating seat 82 and is coaxially arranged. The first bevel gear 84 meshes with the second bevel gear 85.

[0040] 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 fixed rod 81 and rotates through the conductive structure 86, so that the main fan blade 89 rotates, and the generated wind dissipates heat from the heat pipe 3 and the heat sink 4.

[0041] The conductive structure 86 includes a first fixed column 861, a second fixed column 862, a first curved plate 863, and a second curved plate 864. The first fixed column 861 is fixed to the fixed rod 81 and is coaxially arranged. A plurality of first curved plates 863 are fixed to the outer wall of the first fixed column 861 and are evenly distributed along the axis of the first fixed column 861. The second fixed column 862 is fixed to the rotating shaft 88 and is coaxially arranged, and a plurality of second curved plates 864 are fixed to the second fixed column 862 and are evenly distributed along the axis of the second fixed column 862. The first curved plate 863 is meshed with the second curved plate 864.

[0042] Accordingly, during the rotation of the rotor 2, water circulates in the heat pipe 3. At the same time, the main fan blades 89 rotate, and the wind generated dissipates the heat from the heat pipe 3 and the heat sink 4. Moreover, since the main fan blades 89 rotate along the axis of the fixing rod 81, a larger range of air flow can be generated, so as to greatly improve the heat dissipation effect of the heat pipe 3 and the heat sink 4.

[0043] Auxiliary blades 87 are fixedly connected to the rotor 2, and a plurality of auxiliary blades 87 are evenly distributed along the axis of the rotor 2. The auxiliary blades 87 are located between the fixing rod 81 and the stator core 11.

[0044] During the rotation of the rotor 2 , the auxiliary fan blades 87 rotate along with the rotor 2 , and the generated wind can blow toward the heat pipe 3 and the heat sink 4 , further improving the heat dissipation effect.

[0045] Embodiment 2: A three-phase asynchronous motor includes a protective cover 91 and a stator mounting structure in Embodiment 1. The protective cover 91 is fixed to the housing 1, and the rotor 2 is located inside the protective cover 91. A plurality of ventilation holes 92 are provided at the end of the protective cover 91.

[0046] A heat sink 93 is fixedly connected to the housing 1, the heat sink 93 is close to the stator core 11, the heat sink 93 is made of copper and is located between the auxiliary blades 87 and the stator core 11. A junction box 94 is fixedly connected to the outer wall of the housing 1, and the wires of the stator winding 12 are connected to the junction box 94.

[0047] Of course, the above are only typical examples of the present invention. In addition, the present invention may also have many other specific implementations. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A stator mounting structure, comprising a housing (1), a rotor (2), a stator core (11) and a stator winding (12), wherein the stator winding (12) is embedded in a 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), wherein: The invention also comprises a heat sink (4) located outside the stator core (11); a heat conducting pipe (3) is fixedly connected to the stator core (11); a connecting hole (41) is provided on the heat sink (4); a water inlet (42) and a water outlet (43) are provided on the heat sink (4) and are both connected to the connecting hole (41); two ends of the heat conducting pipe (3) are respectively connected to the water inlet (42) and the water outlet (43); a piston sleeve (5) is slidably connected in the connecting hole (41); the piston sleeve (5) is provided with a water conducting hole; a one-way structure (7) is provided on the water conducting hole; the rotor (2) is rotatably connected to the heat sink (4); the rotor (2) rotates and causes the piston sleeve (5) to reciprocate through the elastic structure (6).

2. A stator mounting structure according to claim 1, characterized in that: The elastic structure (6) comprises 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); the inclined plate (61) is fixed to the outer wall of the rotor (2) and is used to contact the support rod (63); the two ends of the elastic member (62) are respectively connected to the heat sink (4) and the piston sleeve (5); the positioning ring (64) is fixed to the inner wall of the heat sink (4); the positioning circular groove (65) is provided on the outer wall of the piston sleeve (5); and the positioning ring (64) is used to contact the inner wall of the positioning circular groove (65); The inclined plate (61) rotates to move the support rod (63) along the length direction of the inclined plate (61); after the inclined plate (61) and the support rod (63) are separated, the support rod (63) is reset due to the elastic force of the elastic member (62).

3. A stator mounting structure according to claim 2, characterized in that: The support rod (63) is rotatably connected to a support wheel (631), and the support rod (63) contacts the inclined plate (61) via the support wheel (631).

4. A stator mounting structure according to claim 2, characterized in that: The one-way structure (7) comprises a transverse plate (71), a spring sheet (72), and a flap (73); the flap (73) is hinged on the outer wall of the piston sleeve (5) and is used to block the water guide hole; the two ends of the spring sheet (72) are respectively connected to the flap (73) and the piston sleeve (5); and the transverse plate (71) is fixed to the end of the inclined plate (61); The support rod (63) moves along the inclined plate (61), and the flap (73) is opened from the water guide hole due to the flow of water. When the support rod (63) moves along the inclined plate (61) to the transverse plate (71), the spring sheet (72) blocks the water guide hole with the flap (73).

5. A stator mounting structure according to claim 4, characterized in that: The housing (1) is fixedly connected to a fixing rod (81) extending in a direction close to the rotor (2); the rotor (2) is connected to a rotating seat (82) via a linkage structure (83); the rotating seat (82) is rotatably connected to the fixing rod (81); a rotating shaft (88) is rotatably connected to the rotating seat (82); the rotating shaft (88) rotates around the fixing rod (81) and is caused to rotate by a conducting structure (86); and a main fan blade (89) is fixedly connected to the rotating shaft (88).

6. A stator mounting structure according to claim 5, characterized in that: The conductive structure (86) includes a first fixed column (861), a second fixed column (862), a first curved plate (863), and a second curved plate (864); the first fixed column (861) is fixed on the fixed rod (81); a plurality of the first curved plates (863) are fixed on the outer wall of the first fixed column (861) and are evenly distributed along the axis of the first fixed column (861); the second fixed column (862) is fixed on the rotating shaft (88); a plurality of the second curved plates (864) are fixed on the second fixed column (862) and are evenly distributed along the axis of the second fixed column (862); and the first curved plate (863) is meshed with the second curved plate (864).

7. A stator mounting structure according to claim 6, characterized in that: The linkage structure (83) comprises a first bevel gear (84) and a second bevel gear (85); the first bevel gear (84) is fixed on the rotor (2); the second bevel gear (85) is fixed on the rotating seat (82); and the first bevel gear (84) is meshed with the second bevel gear (85).

8. A stator mounting structure according to claim 7, characterized in that: Auxiliary blades (87) are fixedly connected to the rotor (2).

9. A three-phase asynchronous motor, comprising a protective cover (91), characterized in that: It also comprises a stator mounting structure as claimed in any one of claims 1 to 8, wherein the protective cover (91) is fixed on the outer shell (1), and the rotor (2) is located inside the protective cover (91).

10. A three-phase asynchronous motor according to claim 9, characterized in that: A heat sink (93) is fixedly connected to the housing (1), and the heat sink (93) is close to the stator core (11).

Images