Dual-rotor dry and wet dual-purpose permanent magnet motor

Abstract

The application discloses a dry-wet dual-rotor permanent magnet motor and relates to the field of permanent magnet motors, which comprises a permanent magnet motor, a fixing structure is arranged at the bottom end of the permanent magnet motor, a heat dissipation layer is arranged on the outer wall of the permanent magnet motor, a plurality of groups of heat dissipation fins are arranged on the outer side of the heat dissipation layer, a sealing heat dissipation mechanism is sleeved to the outer side of the permanent magnet motor, and the sealing heat dissipation mechanism comprises a plurality of groups of sealing plates and cleaning rods which are cross-linked. The application can replace the transmission tooth with the sleeve, connect the air supply fan blade and the air exhaust fan blade and seal the sealing heat dissipation mechanism in a humid environment, so that a sealed circulating flow system of the sealing heat dissipation mechanism, the positioning ring and the sleeve is formed in the heat dissipation process, humid air is prevented from polluting the heat dissipation mechanism and causing the heat dissipation mechanism to rust, and a plurality of groups of heat dissipation guide fins are arranged on the outer side of the sleeve so as to improve the heat conduction efficiency of the sleeve and the external air and thus improve the heat dissipation effect.

Description

Technical Field

[0001] This invention relates to the field of permanent magnet motors, specifically a dual-rotor permanent magnet motor suitable for both dry and wet applications. Background Technology

[0002] A dual-rotor permanent magnet motor is a type of permanent magnet motor that utilizes two sets of rotors. Unlike traditional single-rotor motors, dual-rotor permanent magnet motors have two rotors and, through a special structural design, can provide higher power density and efficiency. Their applications primarily include high-efficiency drive systems, especially in electric vehicles, power equipment, and other fields requiring high power density and compact design. During operation, dual-rotor permanent magnet motors are supported by cooling systems, support mechanisms, and electronic control equipment.

[0003] Existing technology, such as Chinese Patent Publication No. CN111211659B, discloses a dual-rotor permanent magnet motor with a modular annular winding stator, including an inner rotor, an outer rotor, and several modular stators. All modular stators are sequentially spliced ​​to form a complete stator, which is located between the inner rotor and the outer rotor, and the inner rotor and the outer rotor each form an independent air gap with the stator. Each modular stator has an inner stator slot and an outer stator slot along the radial direction. The inner stator slot is close to the inner rotor, and the outer stator slot is close to the outer rotor. The sides of the inner stator slot and the outer stator slot are stator teeth, and the space between the inner stator slot and the outer stator slot is a stator yoke. The stator yoke of each modular stator has an armature winding wound in an annular manner. Permanent magnets are provided at the slot openings of the inner stator slot and the outer stator slot. The permanent magnets and the adjacent stator teeth form a pair of stator magnetic poles.

[0004] Furthermore, existing motors are typically used in various environments. Changes in external humidity and other factors can affect the motor's lifespan and performance. Current technologies employ multiple conjugate stators and rotors, requiring intermittent power supply during operation. The magnets are constantly switched on and off, causing resistance and a continuous rise in motor temperature. Prolonged use necessitates cooling equipment, typically water or air cooling. However, current cooling methods involve injecting cooling media into the motor's outer wall for heat exchange. This requires a variety of cooling media, necessitating continuous circulation and heat dissipation. The limited contact area on the outer surface and short heat exchange time result in low heat exchange efficiency for many media, yet the circulation system is still required, wasting unnecessary electricity. Summary of the Invention

[0005] Based on this, the purpose of this invention is to provide a dual-rotor permanent magnet motor for both dry and wet applications, in order to solve the technical problems of short motor life and low efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a dual-rotor permanent magnet motor for both wet and dry applications, comprising a permanent magnet motor, a fixed structure mounted at the bottom end of the permanent magnet motor, a heat dissipation layer formed on the outer wall of the permanent magnet motor, multiple sets of heat dissipation fins mounted on the outer side of the heat dissipation layer, and a sealing heat dissipation mechanism sleeved on the outer side of the permanent magnet motor, the sealing heat dissipation mechanism comprising multiple sets of staggered sealing plates and cleaning rods, and multiple sets of scrapers mounted on the inner wall of each set of cleaning rods, the scrapers being located between two sets of heat dissipation fins, and two sets of exhaust holes and one set of air inlet holes respectively formed on both sides of the scrapers. Two sets of exhaust holes are located at both ends of the scraper, and the exhaust holes are aligned with the outer wall of the heat sink. An air intake groove is provided at the bottom of the air intake hole, and the air intake groove is in contact with the outer wall of the heat sink layer. An air intake channel and an air extraction channel are provided on the inner wall of the cleaning rod. The air intake channel is connected to the exhaust hole, and the air extraction channel is connected to the air intake hole. Two sets of positioning rings are sleeved on the outer side of the scraper. The two sets of positioning rings are aligned and connected with the air intake channel and the air extraction channel, respectively. A transmission structure is connected to the outer side of the drive shaft. The outer wall of the sealing heat dissipation mechanism is provided with meshing teeth. The drive shaft is connected to the meshing teeth through the transmission structure.

[0007] By adopting the above technical solution, the permanent magnet motor can be easily cooled. During the cooling process, the airflow can fully adhere to the outside of the heat dissipation layer, driving the heat to flow within the heat dissipation layer and improving the cooling effect.

[0008] The invention is further configured such that a support frame and a stabilizer are connected to the bottom end of the permanent magnet motor, a collar is installed inside the support frame, the transmission structure includes a transmission belt and a transmission shaft connected to the outside of the output end of the permanent magnet motor, the transmission belt and the transmission shaft are connected in a transmission connection, the support frame limits the transmission shaft through the collar, a support rod is connected to the bottom end of the positioning ring, and the positioning ring is fixedly connected to the stabilizer through the support rod.

[0009] Preferably, the positioning ring can be easily fixed and the drive shaft can be limited, thereby improving the stability of motor operation.

[0010] The present invention is further configured such that an air supply fan blade and an air extraction fan blade are installed on the outer side of the transmission shaft, and the air supply fan blade and the air extraction fan blade are respectively attached to the sides of two sets of positioning rings.

[0011] Preferably, it allows the fan blades to rotate easily, driving airflow into or out of the positioning ring.

[0012] The present invention is further configured such that the positioning ring is connected to the end channel of the cleaning rod through the connecting sleeve, the air supply fan blade and the air extraction fan blade are connected to the positioning ring through the connecting sleeve, and the transmission shaft passes through the slots of the two sets of positioning rings. The inner side of the two sets of positioning rings is provided with a connecting sleeve, and the relative positions of the two sets of positioning rings are provided with slots.

[0013] Preferably, the sealed heat dissipation mechanism allows for convenient airflow into or out of the device.

[0014] The invention is further configured such that a side ring is provided on the outer side of the sealing and heat dissipation mechanism on the outer wall of the positioning ring, the side ring is in contact with the inner wall of the positioning ring, and a sealing ring is provided on both sides of each group of positioning rings, and the sealing ring is fixed on the outer side of the side ring.

[0015] Preferably, the positioning ring is easy to seal, preventing gas from leaking from inside the sealing ring during heat dissipation.

[0016] The invention is further configured such that the transmission structure outside the transmission shaft is a transmission gear, which meshes with a meshing tooth, and the permanent magnet motor is used in a dry environment.

[0017] Preferably, it facilitates the rotation of the sealed heat dissipation mechanism.

[0018] The present invention is further configured such that the transmission mechanism outside the transmission shaft is a sleeve, the outer side of the sleeve is connected with teeth that match the meshing teeth, the sleeve is connected to the meshing teeth in a transmission connection, and the two ends of the sleeve are in contact with the outer walls of two sets of connecting sleeves.

[0019] Preferably, the sleeve can drive the sealing and heat dissipation mechanism to rotate and seal the heat dissipation position, thus preventing contamination of the heat dissipation layer.

[0020] The invention is further configured such that a heat dissipation guide plate is installed on the outer side of the sleeve, and the heat dissipation guide plate extends through the drive shaft to the inner side of the sleeve, thereby increasing the contact area between the airflow inside the sleeve and the heat dissipation guide plate.

[0021] Preferably, it can improve the heat dissipation effect of the sleeve.

[0022] In summary, the present invention has the following main beneficial effects:

[0023] 1. This invention, through the setting of two sets of symmetrical positioning rings and a sealed heat dissipation mechanism, can seal the heat dissipation structure of the permanent magnet motor during the heat dissipation process. External impurities and other contaminants cannot enter the heat dissipation mechanism and cause unnecessary pollution. During the heat dissipation process, the permanent magnet motor drives the transmission shaft to rotate, and the transmission shaft drives two sets of fan blades. The air supply fan blades and the air extraction fan blades respectively send air into the sealed heat dissipation mechanism, so that the airflow circulates within the sealed heat dissipation mechanism, thereby dissipating heat from the permanent magnet motor.

[0024] 2. The present invention also guides the air entering the sealed heat dissipation mechanism through the set sealing heat dissipation mechanism and scrapers, so that the air forms a circulation between the two sets of scrapers, which improves the air flow and thus increases the contact area between the air and the heat dissipation layer, thereby improving the heat dissipation effect. In the heat dissipation process, the sealed heat dissipation mechanism is driven to rotate by the transmission shaft, which in turn drives each set of scrapers to rotate. The direction of the scraper rotation is opposite to the direction of air intake, so that the incoming air moves away from the scraper position when it enters and quickly contacts the next set of scrapers, thereby improving the airflow efficiency.

[0025] 3. The present invention also features a sleeve that allows for the replacement of the transmission gear in humid environments, connecting the air supply fan blades and the exhaust fan blades, and sealing the heat dissipation mechanism. During the heat dissipation process, the heat dissipation mechanism, the positioning ring, and the sleeve form a sealed circulating flow system, preventing humid air from contaminating the heat dissipation mechanism and causing it to rust. Furthermore, to improve the heat dissipation effect at this time, multiple sets of heat dissipation guide vanes are installed on the outside of the sleeve, which can improve the heat conduction efficiency between the sleeve and the outside air, thereby improving the heat dissipation effect. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the support frame of the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of the motor heat dissipation layer of the present invention;

[0029] Figure 4 This is a schematic diagram of the sealing and heat dissipation mechanism of the present invention;

[0030] Figure 5 This is a schematic diagram of the front structure of the scraper during the heat dissipation process of the present invention;

[0031] Figure 6 For the present invention Figure 5 A magnified schematic diagram of the partial structure at point A in the middle;

[0032] Figure 7 This is a schematic diagram of the structure of the back of the scraper during the heat dissipation process of the present invention;

[0033] Figure 8 For the present invention Figure 7 A magnified view of the structure at point B in the middle;

[0034] Figure 9 This is a schematic diagram of the structure of the sealing and heat dissipation mechanism and the positioning ring of the present invention.

[0035] Figure 10 This is a schematic diagram of the cleaning rod of the present invention;

[0036] Figure 11 This is a schematic diagram of the cross-section of the cleaning rod of the present invention;

[0037] Figure 12 This is a schematic diagram of the positioning ring and each set of fan blade clips of the present invention;

[0038] Figure 13 This is a schematic diagram of the sleeve structure according to the second embodiment of the present invention;

[0039] Figure 14 This is a structural schematic diagram of the sleeve cross-section according to the second embodiment of the present invention.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1. Permanent magnet motor; 101. Transmission belt; 102. Support frame; 103. Stabilizer; 104. Heat dissipation layer; 105. Heat sink; 2. Transmission shaft; 201. Air supply fan blade; 202. Air extraction fan blade; 203. Transmission gear; 204. Sleeve; 205. Heat dissipation guide plate; 3. Sealing and heat dissipation mechanism; 301. Sealing plate; 302. Cleaning rod; 3021. Air inlet channel; 3022. Air extraction channel; 303. Meshing teeth; 304. Side ring; 305. Sealing ring; 4. Positioning ring; 401. Connecting sleeve; 402. Groove; 5. Scraper; 501. Exhaust hole; 502. Air inlet hole; 503. Suction groove. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0043] The embodiments of the present invention will now be described.

[0044] First embodiment:

[0045] Please see Figures 1 to 11The system includes a permanent magnet motor 1, with a fixed structure installed at the bottom. A heat dissipation layer 104 is formed on the outer wall of the permanent magnet motor 1, and multiple sets of heat dissipation fins 105 are installed on the outer side of the heat dissipation layer 104. A sealing heat dissipation mechanism 3 is sleeved on the outer side of the permanent magnet motor 1. The sealing heat dissipation mechanism 3 includes multiple sets of interlocking sealing plates 301 and cleaning rods 302. Multiple sets of scrapers 5 are installed on the inner wall of each set of cleaning rods 302, and the scrapers 5 are located between two sets of heat dissipation fins 105. During use, the scrapers 5 can rotate between the multiple sets of heat dissipation fins 105, driving airflow. The scrapers 5 have two sides... Two sets of exhaust holes 501 and one set of air inlets 502 are respectively provided. The two sets of exhaust holes 501 are located at both ends of the scraper 5 and are aligned with the outer wall of the heat sink 105. An air intake groove 503 is provided at the bottom of the air intake hole 502 and is attached to the outer wall of the heat sink 104. An air intake channel 3021 and an air extraction channel 3022 are provided on the inner wall of the cleaning rod 302. The air intake channel 3021 is connected to the exhaust hole 501 and the air extraction channel 3022 is connected to the air intake hole 502. Two sets of positioning rings 4 are sleeved on the outer side of the scraper 5. The two sets of positioning rings 4 are respectively connected to the air intake channel 3021. Aligned with and connected to the exhaust channel 3022, the drive shaft 2 has an air supply fan blade 201 and an exhaust fan blade 202 mounted on its outer side. The air supply fan blade 201 and the exhaust fan blade 202 respectively fit against the sides of two sets of positioning rings 4. The positioning rings 4 are connected to the end channel of the cleaning rod 302 through the connecting sleeve 401. The air supply fan blade 201 and the exhaust fan blade 202 are connected to the positioning rings 4 through the connecting sleeve 401. The drive shaft 2 passes through the slots 402 of the two sets of positioning rings 4. The inner side of both sets of positioning rings 4 is provided with a connecting sleeve 401. The relative positions of the two sets of positioning rings 4 are also provided with slots 402 for sealing and heat dissipation. The outer side of the mechanism 3 is provided with a side ring 304 on the outer wall of the positioning ring 4. The side ring 304 fits against the inner wall of the positioning ring 4. The sealing and heat dissipation mechanism 3 is provided with a sealing ring 305 on both sides of each group of positioning rings 4. The sealing ring 305 is fixed on the outer side of the side ring 304. During use, the air supply fan blade 201 and the exhaust fan blade 202 can drive the airflow to flow inside the positioning ring 4. During the airflow, the airflow is driven through each group of air intake channels 3021 and exhaust channels 3022 and flows in the scraper 5, thereby dissipating heat inside the heat dissipation layer 104 and improving the heat dissipation effect.

[0046] The outer wall of the sealing heat dissipation mechanism 3 is provided with meshing teeth 303. The transmission shaft 2 is connected to the meshing teeth 303 through a transmission structure. The transmission structure on the outside of the transmission shaft 2 is a transmission gear 203. The transmission gear 203 meshes with the meshing teeth 303. At this time, the permanent magnet motor 1 is used to dry the environment and doubles the rotation of the sealing heat dissipation mechanism 3.

[0047] For details regarding the above embodiments, please refer to [link / reference]. Figure 1As shown in the figure, the bottom end of the permanent magnet motor 1 is connected to a support frame 102 and a stabilizer frame 103. A collar is installed inside the support frame 102. The transmission structure includes a transmission belt 101 connected to the outside of the output end of the permanent magnet motor 1 and a transmission shaft 2. The transmission belt 101 and the transmission shaft 2 are connected in a transmission connection. The support frame 102 limits the transmission shaft 2 through the collar. The bottom end of the positioning ring 4 is connected to a support rod. The positioning ring 4 is fixedly connected to the stabilizer frame 103 through the support rod.

[0048] Second embodiment:

[0049] Please see Figures 13 to 14 The transmission mechanism outside the transmission shaft 2 is a sleeve 204. The outer side of the sleeve 204 is connected with teeth that match the meshing teeth 303. The sleeve 204 is connected to the meshing teeth 303 in a transmission connection. Both ends of the sleeve 204 are in contact with the outer walls of the two sets of connecting sleeves 401. A heat dissipation guide plate 205 is installed on the outer side of the sleeve 204. The heat dissipation guide plate 205 extends through the transmission shaft 2 to the inner side of the sleeve 204, increasing the contact area between the airflow inside the sleeve 204 and the heat dissipation guide plate 205. This can seal the heat dissipation position, reduce the entry of external humid air into the heat dissipation layer 104, and reduce the contamination of the heat dissipation layer 104.

[0050] During use, the permanent magnet motor 1 is first connected to an external power source, and its output is connected to an external device. The permanent magnet motor 1 is then started, and its output provides power to the external device. Simultaneously, the permanent magnet motor 1 drives the transmission shaft 2 to rotate, which in turn drives the outer transmission structure and fan blades. The transmission mechanism, through meshing teeth 303, drives the sealing and heat dissipation mechanism 3 to rotate, thereby causing multiple sets of scrapers 5 to rotate outside the heat dissipation layer 104. At this time, the air-supplying fan blades 201 first bring external airflow into a set of positioning rings 4. These positioning rings 4 are aligned with multiple air inlet channels 3021 at the end of the sealing and heat dissipation mechanism 3. The positioning rings 4, through their inner slots 402, deliver airflow into the air inlet channels 3021 inside each set of cleaning rods 302. The air supply channels are connected to the air inlet holes 502 on the sides of each set of scrapers 5, allowing airflow to enter the heat dissipation layer 104 through the air inlet holes 502. The air blown onto the heat sink 105 dissipates heat. Simultaneously, as the sealing heat dissipation mechanism 3 rotates, the scraper 5 moves away from the hot air. The suction groove 503 on the surface of the next set of scrapers 5 approaches the hot air. At this time, the exhaust fan blades 202 drive the airflow out from the inside of another set of positioning rings 4. This set of positioning rings 4 is connected to the exhaust channel 3022, and the exhaust channel 3022 is connected to the air inlet 502 at the top of the suction groove 503. This allows the air located outside the suction groove 503 to be extracted and sent to the outside of the sealing heat dissipation mechanism 3, improving heat dissipation efficiency. As the sealing heat dissipation mechanism 3 rotates, it pushes the hot air to the outside of the suction groove 503, improving heat dissipation efficiency. The rotation of the scraper 5 disturbs the air entering the sealing heat dissipation mechanism 3. Combined with the air intake of the suction groove 503 and the air exhaust from the exhaust hole 501, a circulating airflow is formed between the two sets of scrapers 5, improving the heat dissipation effect.

[0051] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A dual-rotor permanent magnet motor suitable for both dry and wet applications, comprising a permanent magnet motor (1) and a drive shaft (2), characterized in that: The permanent magnet motor (1) has a fixed structure installed at its bottom end. A heat dissipation layer (104) is provided on the outer wall of the permanent magnet motor (1). Multiple sets of heat dissipation fins (105) are installed on the outer side of the heat dissipation layer (104). A sealing heat dissipation mechanism (3) is sleeved on the outer side of the permanent magnet motor (1). The sealing heat dissipation mechanism (3) includes multiple sets of interlocked sealing plates (301) and cleaning rods (302). Multiple sets of scrapers (5) are installed on the inner wall of each set of cleaning rods (302). The scrapers (5) are located between two sets of heat dissipation fins (105). Two sets of exhaust holes (501) and one set of air inlets (502) are respectively provided on both sides of the scrapers (5). The two sets of exhaust holes (501) are located at both ends of the scrapers (5). The exhaust holes (501) are aligned with the outer wall of the heat dissipation fins (105). The bottom end of the air inlet (502) is provided with an air intake groove (503), which is attached to the outer wall of the heat dissipation layer (104). The inner wall of the cleaning rod (302) is provided with an air intake channel (3021) and an air extraction channel (3022). The air intake channel (3021) is connected to the exhaust hole (501), and the air extraction channel (3022) is connected to the air inlet (502). Two sets of positioning rings (4) are sleeved on the outer side of the scraper (5). The two sets of positioning rings (4) are aligned and connected with the air intake channel (3021) and the air extraction channel (3022) respectively. The outer side of the drive shaft (2) is connected with a transmission structure. The outer wall of the sealing heat dissipation mechanism (3) is provided with meshing teeth (303). The drive shaft (2) is connected to the meshing teeth (303) through the transmission structure. The transmission shaft (2) is equipped with an air supply fan blade (201) and an air extraction fan blade (202) on its outer side. The air supply fan blade (201) and the air extraction fan blade (202) are respectively attached to the sides of two sets of positioning rings (4). The positioning ring (4) is connected to the end channel of the cleaning rod (302) through the connecting sleeve (401). The air supply fan blade (201) and the air extraction fan blade (202) are connected to the positioning ring (4) through the connecting sleeve (401). The drive shaft (2) passes through the slots (402) of the two sets of positioning rings (4). The inner side of the two sets of positioning rings (4) is provided with the connecting sleeve (401). The relative positions of the two sets of positioning rings (4) are provided with slots (402).

2. The dual-rotor permanent magnet motor for both dry and wet applications according to claim 1, characterized in that: The bottom end of the permanent magnet motor (1) is connected to a support frame (102) and a stabilizer frame (103). A collar is installed inside the support frame (102). The transmission structure includes a transmission belt (101) connected to the outside of the output end of the permanent magnet motor (1) and a transmission shaft (2). The transmission belt (101) is connected to the transmission shaft (2). The support frame (102) limits the transmission shaft (2) through the collar. The bottom end of the positioning ring (4) is connected to a support rod. The positioning ring (4) is fixedly connected to the stabilizer frame (103) through the support rod.

3. The dual-rotor permanent magnet motor for both dry and wet applications according to claim 1, characterized in that: The sealing heat dissipation mechanism (3) has a side ring (304) on the outer wall of the positioning ring (4). The side ring (304) fits against the inner wall of the positioning ring (4). The sealing heat dissipation mechanism (3) has a sealing ring (305) on both sides of each group of positioning rings (4), and the sealing ring (305) is fixed on the outside of the side ring (304).

4. The dual-rotor permanent magnet motor for both dry and wet applications according to claim 1, characterized in that: The transmission structure on the outside of the transmission shaft (2) is a transmission gear (203), which meshes with the meshing gear (303). At this time, the permanent magnet motor (1) is used in a dry environment.

5. The dual-rotor permanent magnet motor for both dry and wet applications according to claim 1, characterized in that: The transmission mechanism outside the transmission shaft (2) is a sleeve (204). The outer side of the sleeve (204) is connected with teeth that match the meshing teeth (303). The sleeve (204) is connected to the meshing teeth (303) in a transmission connection. Both ends of the sleeve (204) are in contact with the outer walls of two sets of connecting sleeves (401).

6. The dual-rotor permanent magnet motor for both dry and wet applications according to claim 5, characterized in that: The outer side of the sleeve (204) is equipped with a heat dissipation guide plate (205), and the heat dissipation guide plate (205) extends through the drive shaft (2) to the inner side of the sleeve (204), increasing the contact area between the airflow inside the sleeve (204) and the heat dissipation guide plate (205).

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