A dual-stator permanent magnet motor

Abstract

The present invention relates to the field of motor technology, and discloses a dual-stator permanent magnet motor, comprising a motor housing, a rotor sleeved inside the motor housing, a stator, and fan blades, wherein the fan blades are connected to the rotor in a transmission manner, a heat sink is fixedly connected to the surface of the motor housing, an air outlet aligned with the fan blades is provided on one side of the motor housing, and a filter is nested in the air outlet, and a hollow annular sleeve is sleeved on one side of the motor housing. The present invention utilizes the kinetic energy of the airflow output by the fan blades through the multiple linkage rods, and then rotates and outputs it inside the hollow annular sleeve to generate an actively output airflow, and cooperates with the annular cooling bag to transport the cold air inside the hollow annular sleeve to the outside of the surface of the motor housing through the corresponding through holes, thereby assisting the heat sink, optimizing the overall heat dissipation effect of the motor, and improving the upper limit of the heat dissipation efficiency of the overall device, thereby solving the problems existing in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a dual-stator permanent magnet motor. Background Art

[0002] The structure of a permanent magnet motor mainly includes the following parts: stator, rotor, blades and casing. The stator is the fixed part of the permanent magnet motor, mainly composed of a stator core and a stator winding. The stator core is usually made of laminated silicon steel sheets with good magnetic conductivity to reduce the iron loss generated when the motor is running. The stator winding is a key component for generating a rotating magnetic field when power is applied. It is generally made of multi-layer insulated wire to reduce the risk of short circuit between turns. The rotor is the rotating part of the permanent magnet motor and is also the main component for generating a magnetic field. In a permanent magnet motor, the rotor uses rare earth permanent magnets such as neodymium iron boron. These permanent magnets have stable magnetic properties, small size and light weight, which can significantly improve the efficiency and power density of the motor. The main structural forms of the rotor are surface mount, embedded and reluctance types. The casing is the outer shell of the permanent magnet motor, which protects the motor from the influence of the external environment. The casing is usually made of materials such as aluminum alloy or cast iron, and is required to have good heat dissipation performance and mechanical strength.

[0003] At present, during the rotation operation of the rotor inside the permanent magnet motor, the fan blades are synchronously driven to rotate, and then the rotating fan blades are used to discharge the heat inside the motor by air without delaying the output operation. However, in actual use, the technical solution of only using the aerodynamic heat dissipation of the fan blades has a fixed upper limit of efficiency. After the motor load increases, the problem of slow heat dissipation is likely to occur. Therefore, in response to the technical problems existing in the existing technology, this application will provide a dual-stator permanent magnet motor to solve it. Summary of the Invention

[0004] The present invention provides a dual-stator permanent magnet motor, which solves the problems raised in the above background technology.

[0005] The present invention provides the following technical solution: a dual-stator permanent magnet motor, comprising a motor housing, a rotor, a stator and fan blades mounted inside the motor housing, the fan blades being transmission-connected to the rotor, a heat sink being fixedly connected to the surface of the motor housing, an air outlet aligned with the fan blades being provided on one side of the motor housing, and a filter screen being nested in the air outlet, a hollow annular sleeve being mounted on the outside of one side of the motor housing, a linkage rod and an annular cooling bag being respectively mounted on the inside of both sides of the hollow annular sleeve, one end of the linkage rod extending into the inner space of the hollow annular sleeve and being in the fan blade air delivery area, and a through hole facing the heat sink being opened on one side wall of the hollow annular sleeve.

[0006] Preferably, the hollow annular sleeve is clamped on the surface of one side of the motor housing, and a threaded hole is provided on the surface of one side of the motor housing. A clearance hole aligned with the threaded hole is provided in one side of the hollow annular sleeve. One side of the hollow annular sleeve and one side of the motor housing are detachably installed by passing a screw through the clearance hole and being threadedly connected to the threaded hole, which is convenient for subsequent maintenance and replacement.

[0007] Preferably, the inner wall of the annular cooling bag is adhesively connected to the inner wall of the inner ring structure of the hollow annular sleeve to ensure stability during use. The annular cooling bag is made of elastic material to meet the conditions for expanded use of subsequent functions.

[0008] Preferably, the number of the linkage rods is not less than two and they are equidistantly distributed along the circumference of the hollow annular sleeve. The linkage rod includes a support shaft, a first baffle, and a second baffle. The middle part of the support shaft is fitted with the inner ring structure of the hollow annular sleeve through a bearing. The first baffle is movably sleeved on the inside of the other side of the hollow annular sleeve, and there is a clearance space between the first baffle and the annular cooling bag. The number of the first baffles is not less than two and they are distributed along the circumference of the end head of the other end of the support shaft. The linkage rod can reuse the kinetic energy of the airflow output by the fan blades, link the coolant inside the annular cooling bag, and transport the cold air inside the hollow annular sleeve to the surface of the motor housing and the surface of the heat sink, thereby optimizing the heat dissipation effect of the overall motor.

[0009] Preferably, the second baffle and one end of the support shaft are both in the fan blade air delivery area, and the number of second baffles is not less than two and is distributed along the circumference of the end of one end of the support shaft to ensure the transmission effect.

[0010] Preferably, a pumping assembly is installed at the front end of the base, and the pumping assembly includes an outer protective box, a water pump and a coolant box. The water pump and the coolant box are both mounted inside the outer protective box, and the input end of the water pump is mounted inside the coolant box. The output end of the outer protective box is connected to a guide tube, one end of the guide tube passes through the outer protective box and the hollow annular sleeve and is fixedly mounted on the inner side of the front end of the annular cooling bag, and a return pipe is mounted on the inner side of the rear end of the annular cooling bag, one end of the return pipe respectively passes through the hollow annular sleeve, the base, and the outer protective box and is fixedly mounted on the inside of the coolant box, and the pumping assembly provides conditions for active transportation of the coolant inside the annular cooling bag.

[0011] Preferably, both sides of the bottom of the outer protective box are fixedly connected with fixing blocks, the fixing blocks are installed and fixed to the front end structure of the base by screws, and the top of the outer protective box is covered with a sealing cover.

[0012] Preferably, a U-shaped tube is clamped on the surface of the heat sink to increase the heat conduction and heat dissipation area of the coolant to the heat sink. The ends of the U-shaped tube pass through the hollow annular sleeve and are both mounted inside the annular cooling bag. The number of heat sinks is the same as the number of U-shaped tubes and is not less than two.

[0013] Preferably, the number of the first baffles is specifically six, and the six first baffles are fixedly connected to a pressure rod on the structure away from the end of the support shaft. The pressure rod can be in pressure contact with the annular cooling bag, thereby expanding passive extrusion and achieving the effect of self-circulation of the coolant inside the annular cooling bag.

[0014] Preferably, the number of stators connected to the circuit in the motor housing is two. The rated power of the motor is adjusted by adjusting the number of stators connected, so that the motor is always in a high energy efficiency range, thereby improving energy utilization efficiency. Mounting holes are provided at the bottom of the front and rear ends of the base to facilitate the subsequent installation of the entire motor.

[0015] The present invention has the following beneficial effects:

[0016] 1. The present invention utilizes the kinetic energy of the airflow output by the fan blades through the provision of multiple linkage rods, which are then rotated and output inside the hollow annular sleeve to generate an actively output airflow. In conjunction with the provision of an annular cooling bag, the cold air inside the hollow annular sleeve is transported to the surface of the motor housing through the corresponding through holes, assisting the heat sink, optimizing the overall heat dissipation effect of the motor, improving the upper limit of the heat dissipation efficiency of the overall device, and solving the problems existing in the prior art.

[0017] 2. The present invention provides a U-shaped tube, so that the coolant inside the annular cooling bag will be partially discharged to fully contact the heat sink for heat conduction and heat dissipation, further improving the heat dissipation effect of the motor. After the coolant inside the annular cooling bag is kept at the same temperature, the continuous rotation of the first baffle will have the effect of pneumatic cooling on the coolant inside the annular cooling bag, ensuring continuous use.

[0018] 3. The present invention uses a combination of the pumping assembly, the guide tube, the return tube and the annular cooling bag to keep the coolant in a circulating state in the device, thereby meeting the long-term auxiliary heat dissipation requirements of the hollow annular sleeve, the heat sink, the annular cooling bag and other structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view schematic diagram of the first structural embodiment of the present invention;

[0020] Figure 2 It is a left side schematic diagram of the first structural embodiment of the present invention;

[0021] Figure 3It is an enlarged schematic diagram of the linkage rod of the structure of the present invention;

[0022] Figure 4 This is a schematic top view of a second structural embodiment of the present invention;

[0023] Figure 5 This is a bottom view schematic diagram of the second structural embodiment of the present invention;

[0024] Figure 6 It is a partial cross-sectional schematic diagram of the second structural embodiment of the present invention;

[0025] Figure 7 This is a left side schematic diagram of the second structural embodiment of the present invention

[0026] Figure 8 The structure of the present invention Figure 5 A magnified schematic diagram of point A in the middle;

[0027] Figure 9 It is a partial cross-sectional schematic diagram of the third structural embodiment of the present invention;

[0028] Figure 10 The structure of the present invention Figure 8 Enlarged schematic diagram of point B in the middle.

[0029] In the figure: 1. Motor housing; 2. Base; 3. Fan blades; 4. Heat sink; 5. Hollow annular sleeve; 6. Linkage rod; 61. Support shaft; 62. First baffle; 63. Second baffle; 7. Annular cooling bladder; 8. Through hole; 9. Pumping assembly; 91. Outer protection box; 92. Water pump; 93. Coolant box; 10. Guide pipe; 11. Return pipe; 12. Press rod; 13. U-shaped pipe. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Example 1

[0032] See also Figure 1-3The outer cover of the motor 1 is made of stainless steel and has a plurality of inner covers, and the outer cover is made of stainless steel and has a plurality of outer covers which are connected to the motor 1. The outer cover is made of stainless steel and has a plurality of outer covers which are connected to the motor 1. The outer cover is made of stainless steel and has a plurality of outer covers which are connected to the motor 1.

[0033] The interior of both sides of the hollow annular sleeve 5 is respectively provided with a linkage rod 6 and an annular cooling bag 7. The inner wall of the annular cooling bag 7 is adhesively connected to the inner wall of the inner ring structure of the hollow annular sleeve 5 to ensure stability during use. The annular cooling bag 7 is made of elastic material to meet the conditions for the expansion of subsequent functions.

[0034] The number of linkage rods 6 is not less than two and they are evenly distributed along the circumference of the hollow annular sleeve 5. The linkage rod 6 includes a support shaft 61, a first baffle 62, and a second baffle 63. The middle part of the support shaft 61 is fitted with the inner ring structure of the hollow annular sleeve 5 through a bearing. The first baffle 62 is movably sleeved inside the other side of the hollow annular sleeve 5, and there is a clearance space between the first baffle 62 and the annular cooling bag 7. The number of first baffles 62 is not less than two and they are distributed along the circumference of the end of the other end of the support shaft 61. The linkage rod 6 can reuse the airflow output by the fan blade 3. Kinetic energy, the coolant inside the linked annular cooling bag 7 transports the cold air inside the hollow annular sleeve 5 to the surface of the motor housing 1 and the surface of the heat sink 4, optimizing the heat dissipation effect of the entire motor. The second baffle 63 and one end of the support shaft 61 are both in the air delivery area of the fan blade 3, and the number of second baffles 63 is not less than two and is distributed along the circumferential direction of the end of one end of the support shaft 61 to ensure the transmission effect. One end of the linkage rod 6 extends into the inner space of the hollow annular sleeve 5 and is in the air delivery area of the fan blade 3. A through hole 8 facing the heat sink 4 is opened on one side wall of the hollow annular sleeve 5;

[0035] A U-shaped tube 13 is clamped on the surface of the heat sink 4 to increase the heat conduction and heat dissipation area of the coolant to the heat sink 4. The ends of the U-shaped tube 13 pass through the hollow annular sleeve 5 and are both mounted inside the annular cooling bag 7. The number of heat sinks 4 is the same as the number of U-shaped tubes 13 and is not less than two.

[0036] Working principle: When in use, when the fan blades 3 rotate along with the rotor inside the motor housing 1 to deliver air, the second baffles 63 inside the multiple linkage rods 6 will drive the support shaft 61 to rotate synchronously under the impact of the airflow output by the fan blades 3, and then the support shaft 61 drives the corresponding first baffles 62 to rotate synchronously, generating an actively output airflow inside the hollow annular sleeve 5, and because of the annular cooling bag 7, the air temperature inside the hollow annular sleeve 5 should be lower than that in the environment, and then during the reciprocating rotation of the first baffle 62, the air inside the hollow annular sleeve 5 is transported to the surface of the motor housing 1 through the corresponding through-holes 8, assisting the heat sink 4 and optimizing the overall heat dissipation effect of the motor, and the number of through-holes 8 set is not less than two, and the one corresponding to the first baffle 62 can be used as an air outlet channel, while the one originally separated from the first baffle 62 can be used as an air inlet channel;

[0037] Due to the U-shaped tube 13, part of the coolant inside the annular cooling bag 7 will be discharged to conduct heat with the heat sink 4 to dissipate heat, further improving the heat dissipation effect of the motor. After the coolant inside the annular cooling bag 7 is kept at the same temperature, the continuous rotation of the first baffle 62 will have the effect of pneumatic cooling on the coolant inside the annular cooling bag 7.

[0038] Example 2

[0039] See also Figure 4-8 The outer cover of the motor 1 is made of stainless steel and has a plurality of inner covers, and the outer cover is made of stainless steel and has a plurality of outer covers which are connected to the motor 1. The outer cover is made of stainless steel and has a plurality of outer covers which are connected to the motor 1. The outer cover is made of stainless steel and has a plurality of outer covers which are connected to the motor 1.

[0040] The interior of both sides of the hollow annular sleeve 5 is respectively provided with a linkage rod 6 and an annular cooling bag 7. The inner wall of the annular cooling bag 7 is adhesively connected to the inner wall of the inner ring structure of the hollow annular sleeve 5 to ensure stability during use. The annular cooling bag 7 is made of elastic material to meet the conditions for the expansion of subsequent functions.

[0041] The number of linkage rods 6 is not less than two and they are evenly distributed along the circumference of the hollow annular sleeve 5. The linkage rod 6 includes a support shaft 61, a first baffle 62, and a second baffle 63. The middle part of the support shaft 61 is fitted with the inner ring structure of the hollow annular sleeve 5 through a bearing. The first baffle 62 is movably sleeved inside the other side of the hollow annular sleeve 5, and there is a clearance space between the first baffle 62 and the annular cooling bag 7. The number of first baffles 62 is not less than two and they are distributed along the circumference of the end of the other end of the support shaft 61. The linkage rod 6 can reuse the airflow output by the fan blade 3. Kinetic energy, the coolant inside the linked annular cooling bag 7 transports the cold air inside the hollow annular sleeve 5 to the surface of the motor housing 1 and the surface of the heat sink 4, optimizing the heat dissipation effect of the entire motor. The second baffle 63 and one end of the support shaft 61 are both in the air delivery area of the fan blade 3, and the number of second baffles 63 is not less than two and is distributed along the circumferential direction of the end of one end of the support shaft 61 to ensure the transmission effect. One end of the linkage rod 6 extends into the inner space of the hollow annular sleeve 5 and is in the air delivery area of the fan blade 3. A through hole 8 facing the heat sink 4 is opened on one side wall of the hollow annular sleeve 5;

[0042] A U-shaped tube 13 is clamped on the surface of the heat sink 4 to increase the heat conduction and heat dissipation area of the coolant to the heat sink 4. The ends of the U-shaped tube 13 pass through the hollow annular sleeve 5 and are both sleeved inside the annular cooling bag 7. The number of heat sinks 4 is the same as the number of U-shaped tubes 13, and there are no less than two of each.

[0043] A pumping assembly 9 is installed at the front end of the base 2. The pumping assembly 9 includes an outer protection box 91, a water pump 92 and a coolant box 93. The water pump 92 and the coolant box 93 are both mounted inside the outer protection box 91, and the input end of the water pump 92 is mounted inside the coolant box 93. The output end of the outer protection box 91 is connected to a guide tube 10. One end of the guide tube 10 passes through the outer protection box 91 and the hollow annular sleeve 5 and is fixedly mounted on the inner side of the front end of the annular cooling bag 7. A return pipe 11 is mounted on the inner side of the rear end of the annular cooling bag 7. One end of the return pipe 11 passes through the hollow annular sleeve 5, the base 2, and the outer protection box 91 and is fixedly mounted on the inside of the coolant box 93. The pumping assembly 9 provides active transportation conditions for the coolant inside the annular cooling bag 7. Both sides of the bottom of the outer protection box 91 are fixedly connected with fixed blocks. The fixed blocks are installed and fixed to the front end structure of the base 2 by screws. A sealing cover is mounted on the top of the outer protection box 91.

[0044] Working principle: When in use, when the fan blades 3 rotate along with the rotor inside the motor housing 1 to deliver air, the second baffles 63 inside the multiple linkage rods 6 will drive the support shaft 61 to rotate synchronously under the impact of the airflow output by the fan blades 3, and then the support shaft 61 drives the corresponding first baffles 62 to rotate synchronously, generating an actively output airflow inside the hollow annular sleeve 5, and because of the annular cooling bag 7, the air temperature inside the hollow annular sleeve 5 should be lower than that in the environment, and then during the reciprocating rotation of the first baffle 62, the air inside the hollow annular sleeve 5 is transported to the surface of the motor housing 1 through the corresponding through-holes 8, assisting the heat sink 4 and optimizing the overall heat dissipation effect of the motor, and the number of through-holes 8 set is not less than two, and the one corresponding to the first baffle 62 can be used as an air outlet channel, while the one originally separated from the first baffle 62 can be used as an air inlet channel;

[0045] Due to the U-shaped tube 13, the coolant inside the annular cooling bag 7 will be partially discharged to conduct heat with the heat sink 4, further improving the heat dissipation effect of the motor. After the coolant inside the annular cooling bag 7 is kept at the same temperature, the first baffle 62 is continuously rotated to cool the coolant inside the annular cooling bag 7. At the same time, the water pump 92 is started, and the coolant inside the coolant box 93 is transported to the annular cooling bag 7 through the guide pipe 10 by the water pump 92. Then, it flows back to the interior of the coolant box 93 through the return pipe 11. In this way, the heat dissipation effect of circulating self-cooling is achieved, and the auxiliary heat dissipation effect of the heat sink 4 and the motor housing 1 is maintained.

[0046] Example 3

[0047] See also Figure 9-10 The outer cover of the motor 1 is made of stainless steel and has a plurality of inner covers, and the outer cover is made of stainless steel and has a plurality of outer covers which are connected to the motor 1. The outer cover is made of stainless steel and has a plurality of outer covers which are connected to the motor 1. The outer cover is made of stainless steel and has a plurality of outer covers which are connected to the motor 1.

[0048] The interior of both sides of the hollow annular sleeve 5 is respectively provided with a linkage rod 6 and an annular cooling bag 7. The inner wall of the annular cooling bag 7 is adhesively connected to the inner wall of the inner ring structure of the hollow annular sleeve 5 to ensure stability during use. The annular cooling bag 7 is made of elastic material to meet the conditions for the expansion of subsequent functions.

[0049] The number of linkage rods 6 is not less than two and they are evenly distributed along the circumference of the hollow annular sleeve 5. The linkage rod 6 includes a support shaft 61, a first baffle 62, and a second baffle 63. The middle part of the support shaft 61 is fitted with the inner ring structure of the hollow annular sleeve 5 through a bearing. The first baffle 62 is movably sleeved inside the other side of the hollow annular sleeve 5, and there is a clearance space between the first baffle 62 and the annular cooling bag 7. The number of first baffles 62 is not less than two and they are distributed along the circumference of the end of the other end of the support shaft 61. The linkage rod 6 can reuse the airflow output by the fan blade 3. Kinetic energy, the coolant inside the linked annular cooling bag 7 transports the cold air inside the hollow annular sleeve 5 to the surface of the motor housing 1 and the surface of the heat sink 4, optimizing the heat dissipation effect of the entire motor. The second baffle 63 and one end of the support shaft 61 are both in the air delivery area of the fan blade 3, and the number of second baffles 63 is not less than two and is distributed along the circumferential direction of the end of one end of the support shaft 61 to ensure the transmission effect. One end of the linkage rod 6 extends into the inner space of the hollow annular sleeve 5 and is in the air delivery area of the fan blade 3. A through hole 8 facing the heat sink 4 is opened on one side wall of the hollow annular sleeve 5;

[0050] A U-shaped tube 13 is clamped on the surface of the heat sink 4 to increase the heat conduction and heat dissipation area of the coolant to the heat sink 4. The ends of the U-shaped tube 13 pass through the hollow annular sleeve 5 and are both mounted inside the annular cooling bag 7. The number of heat sinks 4 is the same as the number of U-shaped tubes 13 and is not less than two. The first baffles 62 are specifically set to six, and the six first baffles 62 are fixedly connected to the structure away from the end of the support shaft 61 with a pressing rod 12. The pressing rod 12 can be in pressing contact with the annular cooling bag 7, thereby expanding the passive extrusion, so that the coolant inside the annular cooling bag 7 can circulate by itself.

[0051] Working principle: When in use, when the fan blades 3 rotate along with the rotor inside the motor housing 1 to deliver air, the second baffles 63 inside the multiple linkage rods 6 will drive the support shaft 61 to rotate synchronously under the impact of the airflow output by the fan blades 3, and then the support shaft 61 drives the corresponding first baffles 62 to rotate synchronously, generating an actively output airflow inside the hollow annular sleeve 5, and because of the annular cooling bag 7, the air temperature inside the hollow annular sleeve 5 should be lower than that in the environment, and then during the reciprocating rotation of the first baffle 62, the air inside the hollow annular sleeve 5 is transported to the surface of the motor housing 1 through the corresponding through-holes 8, assisting the heat sink 4 and optimizing the overall heat dissipation effect of the motor, and the number of through-holes 8 set is not less than two, and the one corresponding to the first baffle 62 can be used as an air outlet channel, while the one originally separated from the first baffle 62 can be used as an air inlet channel;

[0052] Due to the U-shaped tube 13, the coolant inside the annular cooling bag 7 will be partially discharged to conduct heat with the heat sink 4 to dissipate heat, further improving the heat dissipation effect of the motor. After the coolant inside the annular cooling bag 7 is kept at the same temperature, the continuously rotating first baffle 62 will have the effect of wind-driven cooling of the coolant inside the annular cooling bag 7. At the same time, the pressing rod 12 connected to the multiple first baffles 62 will circulate and squeeze the annular cooling bag 7, thereby causing the annular cooling bag 7 to deform and reciprocate to squeeze the coolant inside the annular cooling bag 7, so that the coolant can flow on its own, thereby accelerating the self-heating efficiency.

[0053] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. At the same time, in the drawings of the present invention, fill patterns are only used to distinguish layers and do not make any other limitations.

[0054] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A dual-stator permanent magnet motor, comprising a motor housing (1), a rotor sleeved inside the motor housing (1), a stator, and fan blades (3), wherein the fan blades (3) are drivingly connected to the rotor, and a heat sink (4) is fixedly connected to the surface of the motor housing (1), characterized in that: An air outlet aligned with the fan blades (3) is provided on one side of the motor housing (1), and a filter is nested in the air outlet; A hollow annular sleeve (5) is sheathed on one side of the motor housing (1), and linkage rods (6) and annular cooling bags (7) are respectively sheathed on both sides of the hollow annular sleeve (5), one end of the linkage rod (6) extends into the inner space of the hollow annular sleeve (5) and is located in the air delivery area of the fan blade (3), and a through hole (8) facing the heat sink (4) is opened on one side wall of the hollow annular sleeve (5); The number of the linkage rods (6) is not less than two and they are equidistantly distributed along the circumference of the hollow annular sleeve (5). The linkage rod (6) includes a support shaft (61), a first baffle (62), and a second baffle (63). The middle portion of the support shaft (61) is fitted with the inner ring structure of the hollow annular sleeve (5) through a bearing. The first baffle (62) is movably sleeved inside the other side of the hollow annular sleeve (5), and there is a clearance space between the first baffle (62) and the annular cooling bag (7). The number of the first baffles (62) is not less than two and they are distributed along the circumference of the end of the other end of the support shaft (61). The second baffle (63) and one end of the support shaft (61) are both located in the air delivery area of the fan blade (3), and the number of the second baffles (63) is not less than two and is distributed along the circumference of the end of one end of the support shaft (61); When the fan blades (3) rotate along with the rotor inside the motor housing (1) to deliver air, the second baffles (63) inside the plurality of linkage rods (6) will drive the support shaft (61) to rotate synchronously under the impact of the airflow output by the fan blades (3), and then the support shaft (61) drives the corresponding first baffles (62) to rotate synchronously; Specifically, the number of the first baffles (62) is six, and each of the six first baffles (62) is fixedly connected to a push rod (12) on a structure away from the end of the support shaft (61). The push rod (12) can be in push-press contact with the annular cooling bag (7), thereby extending passive extrusion and allowing the coolant inside the annular cooling bag (7) to circulate automatically.

2. A dual-stator permanent magnet motor according to claim 1, characterized in that: The hollow annular sleeve (5) is clamped on the surface of one side of the motor housing (1), and a threaded hole is provided on the surface of one side of the motor housing (1). A clearance hole aligned with the threaded hole is provided in one side of the hollow annular sleeve (5). One side of the hollow annular sleeve (5) and one side of the motor housing (1) are detachably mounted by screws passing through the clearance hole and being threadedly connected to the threaded hole.

3. The dual-stator permanent magnet motor according to claim 1, characterized in that: The inner wall of the annular cooling bag (7) is adhesively connected to the inner wall of the inner ring structure of the hollow annular sleeve (5), and the annular cooling bag (7) is made of elastic material.

4. The dual-stator permanent magnet motor according to claim 1, characterized in that: A pump assembly (9) is installed at the front end of the base (2) of the motor. The pump assembly (9) includes an outer protective box (91), a water pump (92) and a coolant box (93). The water pump (92) and the coolant box (93) are both mounted inside the outer protective box (91), and the input end of the water pump (92) is mounted inside the coolant box (93). The output end of the outer protective box (91) is connected to a guide tube (10). One end of the guide tube (10) passes through the outer protective box (91) and the hollow annular sleeve (5) and is fixedly mounted on the inner side of the front end of the annular cooling bag (7). A return pipe (11) is mounted on the inner side of the rear end of the annular cooling bag (7). One end of the return pipe (11) passes through the hollow annular sleeve (5), the base (2) and the outer protective box (91) and is fixedly mounted on the inner side of the coolant box (93).

5. The dual-stator permanent magnet motor according to claim 4, characterized in that: Both sides of the bottom of the outer protection box (91) are fixedly connected with fixing blocks, and the fixing blocks are fixed to the front end structure of the base (2) by screws. The top of the outer protection box (91) is covered with a sealing cover.

6. The dual-stator permanent magnet motor according to claim 1, characterized in that: The surface of the heat sink (4) is clamped with a U-shaped tube (13), and the ends of both ends of the U-shaped tube (13) pass through the hollow annular sleeve (5) and are both sleeved inside the annular cooling bag (7). The number of brushes provided on the heat sink (4) is the same as the number of U-shaped tubes (13) provided and is not less than two.

7. The dual-stator permanent magnet motor according to claim 1, characterized in that: The number of circuit stators connected to the motor housing (1) is two, and mounting holes are provided at the bottoms of the front and rear ends of the motor base (2).

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