A permanent magnet assisted synchronous reluctance motor

Abstract

The present application relates to a permanent magnet assisted synchronous reluctance motor, comprising a motor body and a water film brushing device, wherein the motor body comprises a housing, a motor shaft and a fan fixed to the end of the motor shaft, the outer peripheral surface of the housing is cylindrical, and the outer peripheral surface of the housing is provided with a plurality of first fins evenly arranged circumferentially, and adjacent first fins form an airflow channel for the airflow of the fan to pass through, and the water film brushing device is used to brush a water film on the surface of the first fin and the outer peripheral surface of the housing. The present application can improve the heat dissipation effect of the housing, thereby reducing the energy consumption of the synchronous reluctance motor and achieving energy saving effect.

Description

Technical Field

[0001] The present application relates to the field of motors, and in particular to a permanent magnet assisted synchronous reluctance motor. Background Art

[0002] The permanent magnet assisted synchronous reluctance motor is a combination of a permanent magnet motor and a synchronous reluctance motor. It has been widely used in home appliances, electric vehicles, space shuttles and other fields. After adding permanent magnet assistance, the synchronous reluctance motor has a simple structure, low cost, good weak magnetic effect, significant energy saving effect, and is suitable for the full speed range of high, medium and low speeds.

[0003] A permanent magnet assisted synchronous reluctance motor generates a lot of heat when in use, which increases the energy consumption of the synchronous reluctance motor. Therefore, a fan is often set at one end of the motor shaft of the permanent magnet assisted synchronous reluctance motor, and fins are set on the outer side of the housing of the permanent magnet assisted synchronous reluctance motor. When the motor is running, the fan is driven to rotate to cool the fins. However, the cooling effect of this cooling method is limited. Summary of the invention

[0004] In order to improve the cooling and heat dissipation effect, the present application provides a permanent magnet assisted synchronous reluctance motor.

[0005] The present application provides a permanent magnet assisted synchronous reluctance motor, which adopts the following technical solution:

[0006] A permanent magnet assisted synchronous reluctance motor comprises a motor body and a water film brushing device, wherein the motor body comprises a shell, a motor shaft and a fan fixed to the end of the motor shaft, the outer peripheral surface of the shell is cylindrical, and the outer peripheral surface of the shell is provided with a plurality of first fins evenly arranged circumferentially, and adjacent first fins form an airflow channel for the airflow of the fan to pass through, and the water film brushing device is used to brush a water film on the surface of the first fin and the outer peripheral surface of the shell.

[0007] By adopting the above technical solution, a water film brushing device is set to brush water film on the surface of the first fin and the outer peripheral surface of the shell, so that a layer of water film is attached to the surface of the airflow channel, and the water film can absorb the heat of the first fin and the shell. At the same time, the airflow of the fan passes through the airflow channel, which strengthens the convection and exchange of water vapor and air in the water film, increases the water vapor pressure difference at the water vapor interface, and makes the water film easier to evaporate. When the water film evaporates from liquid to gas, it will absorb more heat, thereby further absorbing heat from the first fin and the shell, thereby greatly improving the cooling and heat dissipation effect, thereby reducing the energy consumption of the synchronous reluctance motor and achieving energy-saving effect.

[0008] Optionally, the first fin is fixedly connected to the shell, and the water film brushing device includes a microporous tube, a rotating drive assembly, a sponge arc sheet and a water inlet pipe. The microporous tube is provided in plurality, the microporous tube is parallel to the axis of the motor shaft, each microporous tube is respectively located in each of the airflow channels, a rotating shaft is provided at the end of the microporous tube, the rotating drive assembly is used to drive the rotating shaft to rotate, and the water inlet pipe is used to inject water into the microporous tube; the cross-section of the sponge arc sheet is arc-shaped, the sponge arc sheet covers a part of the outer circumferential surface of the microporous tube, and the micropores of the microporous tube are covered by the sponge arc sheet; the rotation path of the microporous tube is divided into a first path and a second path, when the microporous tube rotates in the first path, the sponge arc sheet is sequentially smeared on the surface of one of the two adjacent first fins, the outer circumferential surface of the shell and the other first fin surface of the two adjacent first fins; when the microporous tube rotates in the second path, the sponge arc sheet is away from the airflow channel.

[0009] By adopting the above technical scheme, the water inlet pipe supplies water to the microporous tube, and the water in the microporous tube enters the sponge arc sheet through the micropores. When the microporous tube rotates in the first path, the sponge arc sheet is sequentially coated on the surface of one of the two adjacent first fins, the outer peripheral surface of the shell and the other first fin surface of the two adjacent first fins, so that a layer of water film is attached to the surface of the airflow channel. Then, when the microporous tube rotates in the second path, the sponge arc sheet is away from the airflow channel. During this period, the fan continuously blows air. Since the sponge arc sheet is away from the airflow channel, the airflow channel has a large enough space for the airflow of the fan to pass through, thereby ensuring the evaporation and heat absorption effect of water.

[0010] Optionally, each of the first fins is fixedly connected together by a connecting ring, and flanges are coaxially fixed at both ends of the outer circumference of the shell, and the connecting ring is rotatably sleeved on the outside of the flange, and a sponge sheet is fixed to the first fin, and the sponge sheet fits the outer circumference of the shell; a plurality of first ribs and a plurality of second ribs are fixed on the surface of the first fin, and the first ribs and the second ribs are arranged at intervals along the length direction of the first fin, and the first ribs and the second ribs are both inclined, and the inclination directions of the first ribs and the second ribs are opposite; the water film brushing device includes a microporous tube, a rotating drive assembly, a sponge sleeve, a swing arm, a rotating shaft and a water inlet pipe, and the rotating shaft is set to be multiple, and the rotating shaft is parallel to the axis center of the motor shaft, and the rotating drive assembly is used to drive the rotating shaft to rotate, and the diameter of the virtual circle enclosed by each rotating shaft is larger than the diameter of the virtual circle enclosed by the outer edges of each first fin. The diameter of the circle, the swing arm is perpendicular to the rotating shaft, one end of the swing arm is fixed to the rotating shaft, the microporous tube is parallel to the axis of the motor shaft, the end of the microporous tube is connected to the other end of the swing arm for rotation around its own axis, the water inlet pipe is used to inject water into the microporous tube, the sponge sleeve is fixedly sleeved on the outer circumference of the microporous tube, and the micropores of the microporous tube are covered by the sponge sleeve; the rotation path of the microporous tube around the axis of the rotating shaft is divided into a first path and a second path, when the microporous tube rotates in the first path, the sponge sleeve drives the first fin to rotate around the shell, during which the sponge sleeve sequentially applies the surface of the first fin with the first ridge and the second ridge along the direction close to the axis of the shell, applies the outer circumference of the shell, and applies the surface of the first fin with the first ridge and the second ridge along the direction away from the axis of the shell; when the microporous tube rotates in the second path, the sponge sleeve is away from the airflow channel.

[0011] By adopting the above technical solution, by setting the revolution movement path of the microporous tube, the position of the microporous tube relative to the first fin and the surface structure of the first fin, when the microporous tube rotates in the first path, the sponge sleeve moves the first fin to rotate around the shell. During this period, the sponge sleeve sequentially applies the surface of the first fin with the first ridge and the second ridge along the direction close to the axis of the shell, applies the outer peripheral surface of the shell, and applies the surface of the first fin with the first ridge and the second ridge along the direction away from the axis of the shell. During the two movements of the sponge sleeve relative to the surface of the first fin, the sponge sleeve is rubbed by the first ridge and the second ridge to quickly squeeze out the water on the sponge sleeve. Part of the water flows onto the sponge sheet through the first fin, and the sponge sheet absorbs water. At the same time, the sponge sleeve also abuts against the outer peripheral surface of the shell, and part of the water in the sponge sleeve is squeezed out and flows to the outer peripheral surface of the shell, so that the water on the sponge sleeve stays on the sponge sheet and the outer peripheral surface of the shell as much as possible. In addition, since the first fin can rotate around the shell, the microporous tube can move the first fin to deflect a certain angle when moving in the first path, and the first fin drives the sponge sheet to move on the outer peripheral surface of the shell. The water on the sponge sheet will be more evenly applied to the outer peripheral surface of the shell, thereby further improving the application range and application uniformity of the water film and increasing the water release amount of the sponge sleeve, thereby improving the cooling and heat dissipation effect.

[0012] Optionally, the sponge sheet is fixed to the surface of the first fin facing the shell.

[0013] By adopting the above technical solution, the sponge sheet can be more closely fitted to the outer peripheral surface of the shell, and the application uniformity can be better.

[0014] Optionally, there are two sponge sheets, one side of each sponge sheet is fixed to two opposite side surfaces of the first fin respectively, and the other side of each sponge sheet fits the outer circumference of the shell. The first fin is provided with a spring sheet, which forces the side of the sponge sheet to fit the outer circumference of the shell.

[0015] By adopting the above technical solution and arranging the spring sheet, the damping of the first fin's rotation relative to the shell can be increased, so that the reaction force of the first fin relative to the sponge sleeve is increased, thereby improving the water squeezing effect of the first fin on the sponge sleeve.

[0016] Optionally, the swing arm is configured as an elastic telescopic tube.

[0017] By adopting the above technical solution, the elastic force of the elastic telescopic tube is applied to the microporous tube to force the microporous tube to move in a direction away from the rotation axis, so that the sponge sleeve on the microporous tube is more closely abutted against the outer peripheral surface of the shell and the surface of the first fin, thereby improving the water squeezing effect of the sponge sleeve.

[0018] Optionally, it also includes multiple second fins, each of the second fins is arranged in an alternating manner with each of the first fins, and the second fins are fixed to the connecting ring; the swing arm is fixed with a fixing rod, the fixing rod is parallel to the axis of the shell, the fixing rod is provided with a curved plate, the outer convex curved surface of the curved plate is arranged toward the axis of the shell, one side of the curved plate is hingedly connected to the fixing rod, and a torsion spring is provided at the hinged connection. When the microporous tube moves in the first path, the sponge sleeve drives the first fin to rotate around the shell, and the outer convex curved surface of the curved plate presses against the part of the second fin away from the shell, and the torsion spring is compressed and deformed.

[0019] By adopting the above technical solution, the elastic force of the torsion spring is applied to the second fin through the convex arc surface of the curved plate. The elastic force will prevent the second fin from moving with the first fin, thereby hindering the movement of the first fin. The obstructed movement of the first fin increases the reaction force of the first fin on the sponge sleeve, thereby improving the water squeezing effect of the first fin on the sponge sleeve.

[0020] Optionally, the outer peripheral surface of the shell is set to be a rough surface.

[0021] By adopting the above technical solution, the rough surface can improve the adhesion effect and uniformity of the water film, so that the water film is not easily affected by the position of the shell and flows.

[0022] Optionally, the rotation drive assembly includes a fixed ring, a driving member, an inner gear ring, an outer gear ring and a first gear, the fixed ring is coaxially arranged with the shell, the fixed ring and the shell are relatively fixedly arranged, the fixed ring is provided with a first through hole, the rotating shaft passes through the first through hole, the rotating shaft is rotatably connected with the inner wall of the first through hole, the inner wall of the first through hole is provided with a ring-shaped first water inlet chamber, the rotating shaft is tubular, the inner cavity of the rotating shaft is connected with the inner cavity of the microporous tube, the rotating shaft is provided with a first water inlet hole, and the first water inlet hole connects the first water inlet chamber and the inner cavity of the rotating shaft; the fixed ring is coaxially provided with a second water inlet chamber, the second water inlet chamber is connected with each of the first water inlet chambers, and the water inlet pipe is connected with the second water inlet chamber; the first gear is coaxially fixed on the rotating shaft, the inner gear ring and the outer gear ring are both coaxially rotatably arranged on the fixed ring, the inner gear ring is fixed with the outer gear ring, the inner gear ring is meshed with the first gear, and the driving end of the driving member is provided with a second gear, and the second gear is meshed with the outer gear ring.

[0023] By adopting the above technical solution, the driving member drives the inner gear ring to rotate through the meshing of the second gear and the outer gear ring, and drives the rotating shaft to rotate through the meshing of the inner gear ring and the first gear.

[0024] The water in the water inlet pipe enters the microporous tube through the second water inlet cavity, the first water inlet cavity, the first water inlet hole and the inner cavity of the rotating shaft in sequence.

[0025] Optionally, it also includes a protective cover and an exhaust pipe, wherein the protective cover surrounds the motor body and the water film coating device, and the exhaust pipe is connected to the inner cavity of the protective cover.

[0026] By adopting the above technical solution, the water vapor generated by evaporation will be surrounded by the protective cover, and the exhaust pipe will extract the water vapor in the protective cover, thereby reducing the direct dispersion of water vapor and the increase in humidity in the working environment.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. A water film brushing device is provided to brush a water film on the surface of the first fin and the outer peripheral surface of the shell, so that a layer of water film is attached to the surface of the airflow channel. The water film can absorb the heat of the first fin and the shell. At the same time, the airflow of the fan passes through the airflow channel, which strengthens the convection and exchange between the water vapor of the water film and the air, increases the water vapor pressure difference at the water vapor interface, and makes the water film easier to evaporate. When the water film evaporates from liquid to gas, it will absorb a large amount of heat, thereby further absorbing heat from the first fin and the shell, thereby greatly improving the cooling and heat dissipation effect, thereby reducing the energy consumption of the synchronous reluctance motor and achieving energy-saving effect;

[0029] 2. The microporous tube, the sponge arc sheet and the rotation drive assembly are arranged so that the microporous tube has a first path and a second path. When the microporous tube rotates in the first path, the sponge arc sheet is sequentially coated on the surface of one of the two adjacent first fins, the outer peripheral surface of the shell and the surface of the other first fin of the two adjacent first fins, so that a layer of water film is attached to the surface of the airflow channel. Then, when the microporous tube rotates in the second path, the sponge arc sheet is away from the airflow channel. During this period, the fan continuously blows air into the airflow channel. Since the sponge arc sheet is away from the airflow channel, the airflow channel has a large enough space for the airflow of the fan to pass through, thereby ensuring the evaporation and heat absorption effect of water;

[0030] 3. By setting the revolution movement path of the microporous tube, the position of the microporous tube relative to the first fin and the surface structure of the first fin, when the microporous tube rotates in the first path, the water on the sponge sleeve is kept on the sponge sheet and the outer peripheral surface of the shell as much as possible. At the same time, the movement of the microporous tube in the first path can move the first fin to deflect a certain angle, and the first fin drives the sponge sheet to move on the outer peripheral surface of the shell. The water on the sponge sheet will be more evenly spread on the outer peripheral surface of the shell, thereby further improving the application range and uniformity of the water film and increasing the water release amount of the sponge sleeve, thereby improving the cooling and heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is an exploded view of the overall structure of Example 1.

[0032] Figure 2 Schematic diagram of the cross section of the shell of Example 1.

[0033] Figure 3 It is a schematic diagram of Example 1 for showing that the microporous tube is at the midpoint of the first path.

[0034] Figure 4 It is a schematic diagram of Example 1 for showing that the microporous tube is at the midpoint of the second path.

[0035] Figure 5 It is a partial cross-sectional view of Example 1 for demonstrating the matching relationship between the rotating shaft and the fixing ring.

[0036] Figure 6 It is a schematic diagram of the motor body of Example 2.

[0037] Figure 7 yes Figure 6 A partial enlarged view of point A in the middle.

[0038] Figure 8 It is a partial cross-section of Example 2 for showing the matching relationship between the rotating shaft, the swing arm and the microporous tube.

[0039] Fig. 9It is a schematic diagram of Example 2 for showing the positions of the microporous tube at the starting point of the first path and the end point of the first path.

[0040] Fig.10 This is a cross-sectional view of the first fin of Example 3.

[0041] Fig.11 It is a schematic diagram of Example 4 for showing the position of the microporous tube at the midpoint of the first path.

[0042] Description of reference numerals: 1. motor body; 2. microporous tube; 3. rotation drive assembly; 10. first path; 11. housing; 111. flange; 12. motor shaft; 13. fan; 14. dust cover; 15. first fin; 151. first convex strip; 152. second convex strip; 153. connecting ring; 154. sponge sheet; 155. spring sheet; 16. second fin; 21. sponge arc sheet; 22. second water inlet hole; 23. sponge cover; 31. Fixed ring; 311, first water inlet chamber; 312, second water inlet chamber; 313, first through hole; 32, rotating shaft; 321, first gear; 322, inner gear ring; 323, outer gear ring; 324, second gear; 325, first water inlet hole; 33, driving member; 34, water inlet pipe; 35, swing arm; 351, first tube body; 352, second tube body; 353, second through hole; 354, third water inlet chamber; 36, fixed rod; 37, curved plate. DETAILED DESCRIPTION

[0043] The following is combined with Figure 1-11 This application is described in further detail.

[0044] Example 1

[0045] Embodiment 1 discloses a permanent magnet assisted synchronous reluctance motor, which can be installed vertically or horizontally. In this embodiment, it is installed horizontally.

[0046] Reference Figure 1 and Figure 2 The permanent magnet assisted synchronous reluctance motor includes a motor body 1 and a water film brushing device, wherein the motor body 1 includes a shell 11, a motor shaft 12, a fan 13 and a dust cover 14, wherein the fan 13 is fixed to one end of the motor shaft 12, and the dust cover 14 covers the air inlet end of the fan 13. The outer circumferential surface of the shell 11 is cylindrical, and the outer circumferential surface of the shell 11 is provided with a plurality of first fins 15 evenly arranged circumferentially. In this embodiment, the first fins 15 are fixedly connected to the shell 11, and the first fins 15 are extended axially along the shell 11. Adjacent first fins 15 form an airflow channel for the airflow of the fan 13 to pass through, and the air outlet end of the fan 13 is axially opposite to the airflow channel along the shell 11.

[0047] like Figure 3 , Figure 4As shown, the water film brushing device is used to brush water film on the surface of the first fin 15 and the outer peripheral surface of the shell 11, so that a layer of water film is attached to the surface of the airflow channel, and the water film can absorb the heat of the first fin 15 and the shell 11. At the same time, the airflow of the fan 13 passes through the airflow channel, which strengthens the convection and exchange of water vapor in the water film and air, increases the water vapor pressure difference at the water vapor interface, and makes the water film easier to evaporate. When the water film evaporates from liquid to gas, it will absorb a large amount of heat, thereby further absorbing heat from the first fin 15 and the shell 11, thereby greatly improving the cooling and heat dissipation effect, and also reducing the energy consumption of the synchronous reluctance motor, achieving energy-saving effect.

[0048] Furthermore, the outer peripheral surface of the shell 11 can be set to a rough surface, for example, the surface of the shell 11 is brushed or a plurality of pits are etched to improve the adhesion effect and uniformity of the water film.

[0049] Specifically, Figure 3 , Figure 5 As shown, the water film brushing device includes a microporous tube 2, a rotating drive component 3, a sponge arc sheet 21 and a water inlet pipe 34. The microporous tube 2 is provided in plurality, and the microporous tube 2 is parallel to the axis of the motor shaft 12. Each microporous tube 2 is respectively located in each air flow channel. The surface of the microporous tube 2 has a plurality of micropores (not shown in the figure), and a rotating shaft 32 is provided at the end of the microporous tube 2. In this embodiment, the rotating shaft 32 is coaxially fixedly connected with the microporous tube 2, and the rotating shaft 32 is tubular. The inner cavity of the rotating shaft 32 is connected with the inner cavity of the microporous tube 2.

[0050] The rotation drive assembly 3 is used to drive the rotation shaft 32 to rotate, specifically, as follows Figure 5 As shown, the rotation drive assembly 3 includes a fixed ring 31, a driving member 33, an inner gear ring 322, an outer gear ring 323 and a first gear 321. The fixed ring 31 is coaxially arranged with the shell 11. The fixed ring 31 is located at the end of the shell 11 away from the fan 13. The fixed ring 31 is externally fixed so that the fixed ring 31 and the shell 11 are relatively fixed. The fixed ring 31 is penetrated by a plurality of first through holes 313, each of which is arranged in a one-to-one correspondence with each rotating shaft 32. The rotating shaft 32 passes through the first through hole 313, and the rotating shaft 32 is rotatably connected to the inner wall of the first through hole 313. The inner wall of the first through hole 313 is provided with an annular first water inlet cavity 311, and the rotating shaft 32 is provided with a first water inlet hole 325. The first water inlet hole 325 connects the first water inlet cavity 311 and the inner cavity of the rotating shaft 32.

[0051] The fixing ring 31 is coaxially provided with a second water inlet chamber 312, and the second water inlet chamber 312 is simultaneously communicated with each first water inlet chamber 311. The water inlet pipe 34 is installed on the fixing ring 31, and the water inlet pipe 34 is communicated with the second water inlet chamber 312. In this way, the water in the water inlet pipe 34 can enter the microporous tube 2 through the second water inlet chamber 312, the first water inlet chamber 311, the first water inlet hole 325, and the inner cavity of the rotating shaft 32 in sequence.

[0052] like Figure 5 As shown, the first gear 321 is coaxially fixed to the exposed end of the rotating shaft 32, the inner gear ring 322 and the outer gear ring 323 are coaxially rotatably arranged on the fixed ring 31, the inner gear ring 322 is fixed to the outer gear ring 323, the inner gear ring 322 is meshed with each first gear 321, the driving member 33 is externally fixed, the driving member 33 can be a motor, and the driving end of the driving member 33 is provided with a second gear 324, the second gear 324 is meshed with the outer gear ring 323, the driving member 33 drives the inner gear ring 322 to rotate through the meshing of the second gear 324 and the outer gear ring 323, and drives the rotating shaft 32 to rotate through the meshing of the inner gear ring 322 and the first gear 321, thereby driving the microporous tube 2 to rotate.

[0053] like Figure 3 As shown, the cross-section of the sponge arc piece 21 is arc-shaped, and the sponge arc piece 21 covers a portion of the outer circumferential surface of the microporous tube 2 and is fixed thereto. The micropores of the microporous tube 2 are covered by the sponge arc piece 21, so that the water in the microporous tube 2 can be absorbed by the sponge arc piece 21.

[0054] like Figure 3 , Figure 4 As shown, the rotation path of the microporous tube 2 is divided into a first path and a second path. When the microporous tube 2 rotates in the first path, the sponge arc piece 21 is sequentially smeared on the surface of one of the two adjacent first fins 15, the outer peripheral surface of the shell 11 and the surface of the other first fin 15 of the two adjacent first fins 15, so that a layer of water film is attached to the surface of the airflow channel. Then, when the microporous tube 2 rotates in the second path, the sponge arc piece 21 is away from the airflow channel. During this period, the fan 13 continuously blows air into the airflow channel. Since the sponge arc piece 21 is away from the airflow channel, the airflow channel has a large enough space for the airflow of the fan 13 to pass through, thereby ensuring the evaporation and heat absorption effect of water.

[0055] When the working environment of the technical solution of this embodiment has no strict requirements on water vapor and humidity, the microporous tube 2 can be exposed, and the evaporated water vapor will be dispersed into the external air to increase humidity. When the working environment of the technical solution has strict requirements on water vapor and humidity, in other embodiments, a protective cover can be set on the outside of the motor body 1, the protective cover surrounds the motor body 1 and the water film brushing device, the end of the protective cover close to the fan 13 is a through hole, the protective cover is used to limit the overflow of water vapor, and at the same time, the end of the protective cover away from the fan 13 is provided with an exhaust pipe, the exhaust pipe is connected to the exhaust equipment of the workshop, and the exhaust pipe extracts the water vapor in the protective cover, thereby reducing the direct dispersion of water vapor and causing the increase of humidity in the working environment.

[0056] Example 2

[0057] The difference between Example 2 and Example 1 is that Figure 6 , Figure 7 As shown, each first fin 15 is fixedly connected together by a connecting ring 153, and an annular flange 111 is coaxially fixed at both ends of the outer circumference of the shell 11. The connecting ring 153 is rotatably sleeved on the outer circumference of the flange 111, so that the first fin 15 can rotate around the axis of the shell 11.

[0058] like Figure 7 As shown, a plurality of first ridges 151 and a plurality of second ridges 152 are fixed on the surface of the first fin 15. The first ridges 151 and the second ridges 152 are arranged alternately and spaced apart along the length direction of the first fin 15. The first ridges 151 and the second ridges 152 are both inclined, and the inclination directions of the first ridges 151 and the second ridges 152 are opposite.

[0059] like Figure 7 As shown, the first fin 15 is fixed with a sponge sheet 154 . Specifically, a gap is provided between the surface of the first fin 15 facing the shell 11 and the outer peripheral surface of the shell 11 . The sponge sheet 154 is located in the gap and fits the outer peripheral surface of the shell 11 .

[0060] like Figure 8 , Fig. 9 As shown, the water film brushing device includes a microporous tube 2, a rotating drive component 3, a sponge sleeve 23, a swing arm 35, a rotating shaft 32 and a water inlet pipe 34. The rotating shaft 32 is provided in plurality, and the rotating shaft 32 is parallel to the axis of the motor shaft 12. The diameter of the virtual circle enclosed by each rotating shaft 32 is greater than the diameter of the virtual circle enclosed by the outer edges of each first fin 15.

[0061] The rotation driving assembly 3 is used to drive the rotation shaft 32 to rotate. The specific structure of the rotation driving assembly 3 of this embodiment is consistent with that of the first embodiment.

[0062] like Figure 8 As shown, the swing arm 35 is set to be tubular, and the swing arm 35 can be a single straight tube. In this embodiment, the swing arm 35 is an elastic telescopic tube, that is, the swing arm 35 includes a spring, a first tube body 351 and a second tube body 352 that are connected by sliding sleeves, and the spring is used to force the first tube body 351 and the second tube body 352 to slide away from each other (not shown in the figure). The swing arm 35 is perpendicular to the rotating shaft 32, and one end of the first tube body 351 is fixed to the rotating shaft 32 (the inner cavity of the swing arm 35 is connected to the inner cavity of the rotating shaft 32). The microporous tube 2 Parallel to the axis of the motor shaft 12, the end of the microporous tube 2 passes through the second through hole 353 opened by the second tube body 352, the microporous tube 2 is connected to the hole wall of the second through hole 353 by rotation around its own axis, the inner wall of the second through hole 353 is coaxially provided with a third water inlet cavity 354, and the microporous tube 2 is provided with a second water inlet hole 22 connected to the third water inlet cavity 354, that is, the water in the water inlet pipe 34 can enter the microporous tube 2 through the rotating shaft 32, the swing arm 35, the third water inlet cavity 354, and the second water inlet hole 22 in sequence.

[0063] like Fig. 9 As shown, the sponge cover 23 is fixedly sleeved on the outer peripheral surface of the microporous tube 2 , and the micropores of the microporous tube 2 are covered by the sponge cover 23 .

[0064] like Fig. 9 As shown, the circumferential rotation path of the microporous tube 2 around the axis of rotation axis 32 is divided into a first path 10 and a second path ( Fig. 9 The dotted arc line in the middle is a schematic diagram of the first path 10). When the microporous tube 2 rotates on the first path 10, the sponge cover 23 moves the first fin 15 to rotate around the shell 11. During this period, the sponge cover 23 sequentially applies the surface of the first fin 15 with the first ridge 151 and the second ridge 152 along the axial direction close to the shell 11, applies the outer peripheral surface of the shell 11, and applies the surface of the first fin 15 with the first ridge 151 and the second ridge 152 along the axial direction away from the shell 11. During the two movements of the sponge cover 23 relative to the surface of the first fin 15, the sponge cover 23 is rubbed by the first ridge 151 and the second ridge 152 to quickly squeeze out the water on the sponge cover 23. This part of the water flows to the sponge sheet 154 through the first fin 15. The sponge sheet 15 4 absorbs water, and at the same time, the sponge sleeve 23 also abuts against the outer peripheral surface of the shell 11, and part of the water in the sponge sleeve 23 is squeezed out and flows to the outer peripheral surface of the shell 11, that is, the water on the sponge sleeve 23 is kept on the sponge sheet 154 and the outer peripheral surface of the shell 11 as much as possible, and because the first fin 15 can rotate around the shell 11, the microporous tube 2 moves in the first path 10 to move the first fin 15 to a certain angle, and the first fin 15 drives the sponge sheet 154 to move on the outer peripheral surface of the shell 11, and the water on the sponge sheet 154 will be more evenly applied to the outer peripheral surface of the shell 11, thereby further improving the application range and application uniformity of the water film and increasing the water release amount of the sponge sleeve 23, thereby improving the cooling and heat dissipation effect, and also reducing the energy consumption of the synchronous reluctance motor, achieving energy saving effect.

[0065] When the microporous tube 2 rotates in the second path, the sponge cover 23 is away from the air passage, so that the airflow of the fan 13 can enter the air passage to evaporate the water film.

[0066] Example 3

[0067] The difference between Example 3 and Example 2 is that Fig.10 As shown, there are two sponge sheets 154, which are respectively located on both sides of the first fin 15, and the sponge sheets 154 are inclined. One side of the two sponge sheets 154 is respectively fixed to the two opposite side surfaces of the first fin 15, and the other side of the sponge sheets 154 fits the outer peripheral surface of the shell 11. The first fin 15 is also fixed with a spring sheet 155, which presses on the surface of the sponge sheet 154 to force the side of the sponge sheet 154 to fit the outer peripheral surface of the shell 11.

[0068] By providing the elastic sheet 155 , the damping of the first fin 15 rotating relative to the housing 11 can be increased, so that the reaction force of the first fin 15 relative to the sponge cover 23 is increased, thereby improving the water squeezing effect of the first fin 15 on the sponge cover 23 .

[0069] Example 4

[0070] The difference between Example 4 and Example 2 is that Fig.11 As shown, it also includes a plurality of second fins 16, the cross sections of the first fins 15 and the second fins 16 are both wedge-shaped, the second fins 16 are arranged alternately with the first fins 15, and the second fins 16 are fixed to the connecting ring 153, that is, the first fins 15 and the second fins 16 can rotate synchronously around the shell 11. In addition, there is a very small gap between the second fins 16 and the outer peripheral surface of the shell 11, and the gap is equal to the water film thickness of the outer peripheral surface of the shell 11.

[0071] The swing arm 35 is fixed with a fixing rod 36, which is parallel to the axis of the shell 11. The fixing rod 36 is provided with a curved plate 37, and the outer convex curved surface of the curved plate 37 is arranged toward the axis of the shell 11. One side of the curved plate 37 is hingedly connected to the fixing rod 36, that is, the rotation axis of the curved plate 37 is the rotation axis of the fixing rod 36, and a torsion spring (not shown in the figure) is provided at the hinge connection.

[0072] When the microporous tube 2 moves along the first path 10, the sponge cover 23 moves the first fin 15 to rotate around the housing 11, and the convex arc surface of the curved plate 37 presses against the part of the second fin 16 away from the housing 11, and the torsion spring is compressed and deformed. The elastic force of the torsion spring is applied to the second fin 16 through the convex arc surface of the curved plate 37 ( Fig.11 For example, the elastic force of the torsion spring will force the curved plate 37 to swing downward), and the elastic force will prevent the second fin 16 from moving with the first fin 15, thereby hindering the movement of the first fin 15. The hindered movement of the first fin 15 increases the reaction force of the first fin 15 on the sponge cover 23, thereby improving the water squeezing effect of the first fin 15 on the sponge cover 23.

[0073] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A permanent magnet assisted synchronous reluctance motor, characterized in that: The invention comprises a motor body (1) and a water film brushing device, wherein the motor body (1) comprises a shell (11), a motor shaft (12) and a fan (13) fixed to the end of the motor shaft (12); the outer peripheral surface of the shell (11) is cylindrical; the outer peripheral surface of the shell (11) is provided with a plurality of first fins (15) evenly arranged around the circumference; adjacent first fins (15) form an air flow channel for the air flow of the fan (13) to pass through; the water film brushing device is used to brush a water film on the surface of the first fins (15) and the outer peripheral surface of the shell (11); the first fins (15) are fixedly connected to the shell (11); the water film brushing device comprises a microporous tube (2), a rotation drive component (3), a sponge arc sheet (21) and a water inlet pipe (34); the microporous tube (2) is provided in plurality; the microporous tube (2) is parallel to the axis of the motor shaft (12); each microporous tube (2) is respectively located in each of the air flow channels. The microporous tube (2) is provided with a rotating shaft (32) at the end thereof, the rotating drive assembly (3) is used to drive the rotating shaft (32) to rotate, and the water inlet pipe (34) is used to inject water into the microporous tube (2); the cross section of the sponge arc sheet (21) is in the shape of an arc, the sponge arc sheet (21) covers a part of the outer peripheral surface fixed to the microporous tube (2), and the micropores of the microporous tube (2) are covered by the sponge arc sheet (21); the rotating path of the microporous tube (2) is divided into a first path (10) and a second path, when the microporous tube (2) rotates in the first path (10), the sponge arc sheet (21) is sequentially coated on the surface of one of the two adjacent first fins (15), the outer peripheral surface of the shell (11) and the surface of the other of the two adjacent first fins (15); when the microporous tube (2) rotates in the second path, the sponge arc sheet (21) is away from the air flow channel.

2. The permanent magnet assisted synchronous reluctance motor according to claim 1, characterized in that: The first fins (15) are fixedly connected together via a connecting ring (153); flanges (111) are coaxially fixed to both ends of the outer peripheral surface of the shell (11); the connecting ring (153) is rotatably sleeved on the outside of the flange (111); a sponge sheet (154) is fixed to the first fin (15); the sponge sheet (154) is attached to the outer peripheral surface of the shell (11); a plurality of first convex strips (151) and a plurality of second convex strips (152) are fixed to the surface of the first fin (15); the first convex strips (151) and the second convex strips (152) are arranged alternately and spaced along the length direction of the first fin (15); the first convex strips (151) and the second convex strips (152) are arranged alternately and spaced along the length direction of the first fin (15); The first convex strip (151) and the second convex strip (152) are both arranged obliquely, and the inclination directions of the first convex strip (151) and the second convex strip (152) are opposite; the water film brushing device comprises a microporous tube (2), a rotation drive assembly (3), a sponge sleeve (23), a swing arm (35), a rotation shaft (32) and a water inlet pipe (34); the rotation shaft (32) is provided in a plurality, the rotation shaft (32) is parallel to the axis of the motor shaft (12), the rotation drive assembly (3) is used to drive the rotation shaft (32) to rotate, and the diameter of the virtual circle enclosed by each rotation shaft (32) is larger than the diameter of the virtual circle enclosed by the outer sides of each first fin (15). The swing arm (35) is perpendicular to the rotation axis (32), one end of the swing arm (35) is fixed to the rotation axis (32), the microporous tube (2) is parallel to the axis of the motor shaft (12), the end of the microporous tube (2) is connected to the other end of the swing arm (35) so as to rotate around its own axis, the water inlet pipe (34) is used to inject water into the microporous tube (2), the sponge sleeve (23) is fixedly sleeved on the outer peripheral surface of the microporous tube (2), and the micropores of the microporous tube (2) are covered by the sponge sleeve (23); the rotation path of the microporous tube (2) around the axis of the rotation axis (32) is divided into a first path (10) and a second path, When the microporous tube (2) rotates in the first path (10), the sponge sleeve (23) moves the first fin (15) to rotate around the shell (11), during which the sponge sleeve (23) sequentially applies the surface of the first fin (15) with the first convex strip (151) and the second convex strip (152) along the direction close to the axis of the shell (11), applies the outer peripheral surface of the shell (11), and applies the surface of the first fin (15) with the first convex strip (151) and the second convex strip (152) along the direction away from the axis of the shell (11); when the microporous tube (2) rotates in the second path, the sponge sleeve (23) is away from the air flow channel.

3. The permanent magnet assisted synchronous reluctance motor according to claim 2, characterized in that: The sponge sheet (154) is fixed to the surface of the first fin (15) facing the shell (11).

4. The permanent magnet assisted synchronous reluctance motor according to claim 2, characterized in that: There are two sponge sheets (154), one side of the two sponge sheets (154) is respectively fixed to two opposite side surfaces of the first fin (15), and the other side of the sponge sheet (154) is in contact with the outer peripheral surface of the shell (11). The first fin (15) is provided with a spring sheet (155), and the spring sheet (155) forces the side edge of the sponge sheet (154) to be in contact with the outer peripheral surface of the shell (11).

5. The permanent magnet assisted synchronous reluctance motor according to claim 2, characterized in that: The swing arm (35) is configured as an elastic telescopic tube.

6. The permanent magnet assisted synchronous reluctance motor according to any one of claims 2 to 5, characterized in that: The invention also comprises a plurality of second fins (16), each of the second fins (16) and each of the first fins (15) being arranged in a staggered manner, and each of the second fins (16) is fixed to the connecting ring (153); the swing arm (35) is fixed with a fixing rod (36), the fixing rod (36) is parallel to the axis of the shell (11), the fixing rod (36) is provided with a curved plate (37), the outer convex curved surface of the curved plate (37) is arranged toward the axis of the shell (11), one side of the curved plate (37) is hingedly connected to the fixing rod (36), and a torsion spring is provided at the hinged connection; when the microporous tube (2) moves along the first path (10), the sponge sleeve (23) drives the first fin (15) to rotate around the shell (11), the outer convex curved surface of the curved plate (37) is pressed against the portion of the second fin (16) away from the shell (11), and the torsion spring is compressed and deformed.

7. The permanent magnet assisted synchronous reluctance motor according to claim 1, characterized in that: The outer peripheral surface of the shell (11) is set to be a rough surface.

8. The permanent magnet assisted synchronous reluctance motor according to claim 1 or 2, characterized in that: The rotation drive assembly (3) comprises a fixing ring (31), a driving member (33), an inner gear ring (322), an outer gear ring (323) and a first gear (321); the fixing ring (31) is coaxially arranged with the housing (11); the fixing ring (31) and the housing (11) are relatively fixedly arranged; the fixing ring (31) is provided with a first through hole (313); the rotating shaft (32) passes through the first through hole (313); the rotating shaft (32) is rotatably connected to the inner wall of the first through hole (313); the inner wall of the first through hole (313) is provided with an annular first water inlet cavity (311); the rotating shaft (32) is tubular; the inner cavity of the rotating shaft (32) is in communication with the inner cavity of the microporous tube (2); the rotating shaft (32) is provided with a first water inlet hole (325); the first water inlet hole (325) is connected to the inner cavity of the microporous tube (2); The first water inlet cavity (311) and the inner cavity of the rotating shaft (32) are connected; the fixing ring (31) is coaxially provided with a second water inlet cavity (312), the second water inlet cavity (312) is communicated with each of the first water inlet cavities (311), and the water inlet pipe (34) is communicated with the second water inlet cavity (312); the first gear (321) is coaxially fixed on the rotating shaft (32), the inner gear ring (322) and the outer gear ring (323) are coaxially rotatably arranged on the fixing ring (31), the inner gear ring (322) is fixed with the outer gear ring (323), the inner gear ring (322) is meshed with the first gear (321), and the driving end of the driving member (33) is provided with a second gear (324), the second gear (324) is meshed with the outer gear ring (323).

9. The permanent magnet assisted synchronous reluctance motor according to claim 1, characterized in that: It also comprises a protective cover and an exhaust pipe, wherein the protective cover surrounds the motor body (1) and the water film brushing device, and the exhaust pipe is connected to the inner cavity of the protective cover.

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