CN112688495B - Permanent magnet synchronous motor and controller integrated assembly for negative pressure fan - Google Patents
Permanent magnet synchronous motor and controller integrated assembly for negative pressure fan Download PDFInfo
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- CN112688495B CN112688495B CN202011497354.3A CN202011497354A CN112688495B CN 112688495 B CN112688495 B CN 112688495B CN 202011497354 A CN202011497354 A CN 202011497354A CN 112688495 B CN112688495 B CN 112688495B
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- 238000009434 installation Methods 0.000 claims abstract description 71
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- 238000007789 sealing Methods 0.000 claims abstract description 16
- 230000017525 heat dissipation Effects 0.000 claims abstract description 9
- 244000144972 livestock Species 0.000 claims abstract description 9
- 238000011900 installation process Methods 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
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- 238000004804 winding Methods 0.000 claims description 7
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Abstract
The invention discloses a permanent magnet synchronous motor and controller integrated assembly for a negative pressure fan, wherein the permanent magnet synchronous motor comprises a rotor assembly and a stator assembly, wherein the rotor assembly is integrally installed with a rotating shaft, and the stator assembly is positioned at the periphery of the rotor assembly; the stator assembly is arranged in an installation cavity of the motor shell, the motor shell comprises a first end cover and a shell body, the first end cover and the shell body are integrally or separately connected in a sealing mode, the shell body is provided with the installation cavity, and two ends of the rotating shaft are respectively arranged on the first end cover and the second end cover in a relatively rotatable mode; the shell body and the second end cover are fixedly and hermetically installed into a whole, and a controller shell fixedly installed and connected with the shell body is arranged on the outer side of the second end cover plate; the air blower has the advantages of high efficiency, low electricity consumption, small volume, reasonable layout, simple installation structure and convenient installation process, can realize excellent protection, sealing and installation and heat dissipation effects on the main body of the air blower motor and the controller, and is particularly suitable for being applied to negative pressure air blower products for livestock.
Description
Technical Field
The invention belongs to the field of negative pressure fans, and particularly relates to a permanent magnet synchronous motor and controller integrated assembly for a negative pressure fan, which is particularly suitable for being applied to livestock negative pressure fan products.
Background
Negative pressure fan products can provide a convection effect to air by driving, and thus the fan products are widely used in many fields, such as animal husbandry, industrial plants, washing machines, or other related fields where an air convection function is required. Specifically, in the modern livestock breeding industry, large livestock breeding bases generally need to use livestock blowers to convect and ventilate the livestock breeding houses, so that the comfort level of the breeding livestock is improved, and blower products generally need to work for a long time, which needs to consume a lot of electricity.
As the most core parts of the negative pressure fan product are fan blades, the sizes of the negative pressure fans of the current planned farms and industrial plants are developed in the directions of large air gathering cylinders and large fan blades, and the actual working conditions of the negative pressure fans are required to adjust the working rotating speeds of the negative pressure fans. However, the motor adopted by the current negative pressure fan product is usually an induction asynchronous motor, and the driving modes adopted by the motor comprise two modes: the first driving mode adopts a 4P induction asynchronous motor structure to add a belt for reducing speed and drive the fan blade to work after the motor is reduced by a belt pulley, and the driving mode has the defects of low fan rotating speed, small air quantity and low fan energy efficiency ratio; the second type is an 8P induction asynchronous motor structure and a direct driving mode, namely, a motor is adopted to directly drive fan blades to work, and the driving mode has the advantages of heavier motor, inconvenient installation, large volume, large coverage area of an air inlet of a fan and large wind resistance, and reduces the energy efficiency ratio of the fan.
In addition, because the fan motor is used as a driving structure of the negative pressure fan, in order to facilitate the installation of the fan impeller and ensure that the fan impeller realizes good air convection during the actual installation application, the fan motor is often required to be installed in a hanging manner; meanwhile, in order to ensure the protection effect on the motor, the stator and the rotor are generally integrally packaged in a motor casing. The existing fan motor is installed by penetrating the inside of the motor shell through screws, and the installation structure is not only laborious and time-consuming, but also can influence the overall sealing performance of the motor.
For this reason, the applicant wants to find out technical solutions to improve the above technical problems, and to propose patent applications in a concentrated manner.
Disclosure of Invention
In view of the above, the invention aims to provide a permanent magnet synchronous motor and controller integrated assembly for a fan, which has the advantages of high fan energy efficiency, low electricity consumption, small volume, reasonable layout, simple installation structure and convenient installation process, can realize excellent protection, sealing and installation and heat dissipation effects on a fan motor main body and a controller, and is particularly suitable for being applied as a livestock negative pressure fan product.
Before the technical scheme of the application is proposed, after theoretical calculation and analysis of accumulated experimental data, when the negative pressure fan product is driven at a rotating speed of about 750rpm (revolutions per minute), the energy efficiency ratio (air quantity/electricity consumption) possessed by the fan is most obvious under the condition of high negative pressure (> 75 PA), and the ventilation effect under the high-temperature environment (> 38 ℃) is also the best. However, the current induction asynchronous motor adopted by the conventional negative pressure fan has low ubiquitous working speed, usually only about 690rpm, the best working point of the fan is missed, the influence on the energy efficiency of the fan is larger, and the induction asynchronous motor has low efficiency and large power consumption.
For this purpose, the invention adopts the following technical scheme:
a permanent magnet synchronous motor and controller integrated assembly for a negative pressure fan comprises a permanent magnet synchronous motor and a controller which are installed and connected into a whole; the permanent magnet synchronous motor comprises a rotor assembly and a stator assembly, wherein the rotor assembly and the rotor shaft are installed into a whole, and the stator assembly is positioned at the periphery of the rotor assembly;
the stator assembly is arranged in an installation cavity of the motor shell, the motor shell comprises a first end cover and a shell body, the first end cover and the shell body are integrally or separately connected in a sealing mode, the shell body is provided with the installation cavity, and two ends of the rotating shaft are respectively arranged on the first end cover and the second end cover in a relatively rotatable mode;
the shell body and the second end cover are fixedly and hermetically installed into a whole, a controller shell fixedly installed and connected with the second end cover plate is arranged on the outer side of the second end cover plate, the controller shell is provided with an installation inner cavity for installing a controller, and the controller is electrically connected with the stator assembly.
Preferably, a plurality of installation sliding grooves which are distributed at intervals are formed in the periphery of the shell body, and the installation sliding grooves are used for limiting and inserting fasteners to realize complete machine installation.
Preferably, the two sides of the second end cover are respectively provided with a sealing ring and/or packaging sealant in a limiting manner, so as to prevent external impurities (including moisture or dust impurities) from entering the motor shell and the controller shell.
Preferably, the outer circumferences of the motor shell, the second end cover and the controller assembly shell are respectively provided with a fastening mounting groove for inserting fasteners, and the cross section of the fastening mounting groove is in a closed shape.
Preferably, a fastening mounting groove for inserting fasteners is formed in the periphery of the controller shell, and the cross section of the fastening mounting groove is in a closed shape; the fastener that is equivalent to this application all installs at the casing surface, can guarantee effectively that prevent outside impurity (mainly water droplet) through fastening mounting groove entering motor casing and inside the controller casing at the installation.
Preferably, the periphery of the shell body is provided with a plurality of bulges extending to the radial outer side of the shell body, the gaps between the adjacent bulges form a mounting chute, and the bulge ends extend along the inner side direction of the corresponding mounting chute to form a limiting part.
Preferably, a plurality of heat dissipation reinforcing ribs extending to the radial outer side of the shell body are arranged on the periphery of the shell body between the adjacent installation sliding grooves.
Preferably, the rotor assembly comprises a rotor core formed by laminating a plurality of rotor core punching sheets, wherein magnetic steel embedded grooves which are uniformly distributed at intervals are formed in the periphery of the rotor core, and permanent magnet steel is embedded in each magnetic steel embedded groove; the stator assembly comprises a stator core with a plurality of stator slots, and stator windings are arranged in the stator slots.
Preferably, the rotating shaft penetrates through a penetrating hole extending the first end cover plate, and an oil seal for sealing is arranged between the outer side of the penetrating hole and the periphery of the rotating shaft; meanwhile, the circuit board of the controller is encapsulated by pouring sealant.
Preferably, the outer surface of the motor shell and/or the outer surface of the controller shell are subjected to black spraying, so that the corrosion resistance (including ammonia resistance, hydrogen sulfide, heavy metal and the like) of the shell surface is improved, and the rapid heat dissipation effect is facilitated.
The invention adopts the permanent magnet synchronous motor as the driving motor of the negative pressure fan, when in actual working operation, the working rotating speed can be controlled in the optimal energy efficiency ratio working range of 750rpm in real time, the controller can be connected with a 0-10V power supply, a 485 serial port and the like for real-time dynamic control and speed regulation, so that the efficiency of the permanent magnet synchronous motor is ensured not to be lower than IE5 energy efficiency standard, and the fan has high energy efficiency, less electricity consumption and small volume; the invention also provides a motor with a rotor assembly, a stator assembly and a motor cover, wherein the stator assembly is arranged on the periphery of the rotor assembly and is integrally arranged in a motor shell with an inner mounting cavity, and the stator assembly is fixedly and hermetically connected with the first end cover plate, the shell body and the second end cover plate to realize an effective protection effect on the motor of the fan; the application still further proposes by first end cover plate and the casing barrel body coupling shaping's that has the installation inner chamber motor housing and second end cover plate as fan motor body's installation seal structure, simultaneously through set up rather than fixed mounting connection's controller casing in the outside of second end cover plate, the three carries out fixed seal installation connection, rationally distributed, mounting structure is simple and the installation process is convenient, can realize simultaneously to fan motor body and controller's excellent protection seal installation and radiating effect.
The application still further proposes to set up the external diameter of stator core towards the piece to be not more than 140mm, can specifically set up to the specification simultaneously at 15 or 18 or 24's stator groove structures, with multipolar permanent magnet rotor subassembly cooperation back, can realize the driving effect of high-power high-speed, the installation volume that occupies simultaneously is little, installation light in weight, and powerful manufacturing cost has been reduced.
The application still further provides the rotor assembly structure with the embedded surface, specifically provides the structural design that 16 or 18 or 20 magnetic steel embedded grooves are formed in the periphery of the rotor core, and permanent magnet steel is embedded in each magnetic steel embedded groove, so that a multi-pole embedded magnetic pole structure is realized, the electromagnetic working efficiency of a motor can be effectively improved, and the driving effect of high power and high rotation speed is realized after the motor is matched with a stator assembly.
Drawings
FIG. 1 is a schematic diagram of an installation structure of a permanent magnet synchronous motor and controller integrated assembly for a negative pressure fan according to an embodiment of the invention;
FIG. 2 is a schematic view of the left end face structure of FIG. 1;
FIG. 3 is a schematic view of the right end face structure of FIG. 1;
FIG. 4 is an exploded view of FIG. 1;
FIG. 5 is a schematic end view of the motor housing of FIG. 1;
FIG. 6 is a schematic view of the structure of FIG. 5 rotated by a certain angle;
FIG. 7 is a schematic view of the structure of FIG. 5 rotated another angle;
FIG. 8 is a schematic structural view of the controller housing of FIG. 1;
FIG. 9 is a schematic view of the structure of FIG. 8 rotated by a certain angle;
FIG. 10 is a schematic side elevational view of FIG. 8;
FIG. 11 is a schematic view of the second end cap plate of FIG. 1;
FIG. 12 is a cross-sectional block diagram of FIG. 1;
FIG. 13 is a schematic view of the rotor assembly of FIG. 1;
fig. 14 is a schematic structural view of a rotor core;
fig. 15 is a schematic structural view of a rotor core sheet;
FIG. 16 is a schematic view of the stator core segment of FIG. 1;
FIG. 17 is a schematic diagram of a three-phase wiring configuration of a stator winding;
fig. 18 is an enlarged view of the structure at a in fig. 12.
Detailed Description
The embodiment of the invention discloses a permanent magnet synchronous motor and controller integrated assembly for a negative pressure fan, which comprises a permanent magnet synchronous motor and a controller which are installed and connected into a whole; the permanent magnet synchronous motor comprises a rotor assembly and a stator assembly, wherein the rotor assembly and the rotating shaft are installed into a whole, and the stator assembly is positioned at the periphery of the rotor assembly; the stator assembly is arranged in an installation cavity of the motor shell, the motor shell comprises a first end cover and a shell body, the first end cover and the shell body are integrally or separately connected in a sealing mode, the shell body is provided with the installation cavity, and two ends of the rotating shaft are respectively arranged on the first end cover and the second end cover in a relatively rotatable mode; the shell body and the second end cover are fixedly and hermetically installed as a whole, a controller shell fixedly installed and connected with the second end cover plate is arranged on the outer side of the second end cover plate, the controller shell is provided with an installation inner cavity for installing a controller, and the controller is electrically connected with the stator assembly.
In order to make the technical solution of the present invention better understood by those skilled in the art, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
Referring to fig. 1, 2, 3 and 4, a permanent magnet synchronous motor and controller integrated assembly 1 for a negative pressure fan comprises a permanent magnet synchronous motor and a controller 2 which are installed and connected into a whole; the permanent magnet synchronous motor comprises a rotor assembly 20 and a stator assembly 30, wherein the rotor assembly 20 is integrally installed with the rotating shaft 10, the stator assembly 30 is positioned at the periphery of the rotor assembly 20, and the stator assembly 30 is installed in an installation cavity 41c of the motor shell 41;
referring further to fig. 5, 6, 7 and 11, the present embodiment also preferably proposes a mounting housing of a fan motor, including a motor housing 41, and particularly preferably, in this embodiment, the motor housing 41 includes a first end cover plate 41a and a housing cylinder 41b having a mounting cavity 41c integrally connected, the mounting cavity 41c is used for mounting and placing the stator assembly 30, the first end cover plate 41a and the housing cylinder 41b may be specifically formed by integrally casting, and the housing cylinder 41b and the second end cover plate 42 are fixedly and hermetically mounted as a whole; of course, in other embodiments, the first end cover 41a and the housing cylinder 41b may be mounted in a separate sealing manner, but it is obvious that this may have a negative effect on the sealing effect by adding mounting steps; two ends of the rotating shaft 10 are respectively and relatively rotatably arranged on the first end cover plate 41a and the second end cover plate 42; referring to fig. 8, 9 and 10, in the present embodiment, the mounting housing further includes a controller housing 43 fixedly mounted and connected to the second end cover plate 42, wherein the controller housing 43 has a mounting cavity 43e for mounting the controller 2, and the controller is electrically connected to the stator assembly 30; preferably, as further shown in fig. 18, in this embodiment, two sides of the second end cover 42 are respectively provided with a first limiting groove 42a and a second limiting groove 42b, a first O-ring 44a and a second O-ring 44b are respectively installed in the first limiting groove 42a and the second limiting groove 42b in a corresponding limiting manner, and then an encapsulation sealant (specifically, an anaerobic sealant may be adopted) is adopted, where fig. 4 shows a first anaerobic sealant 45a, a second anaerobic sealant 45b, and the O-rings 44a, 44b and the anaerobic sealant 45a,45b are respectively located at the connection positions between the second end cover 42 and the motor housing 41 and the controller housing 43, so that external impurities (including moisture or dust impurities) can be reliably prevented from entering the interior of the motor housing 41 and the controller housing 43; meanwhile, in the embodiment, the circuit board 2a of the controller 2 is further encapsulated by pouring sealant;
preferably, in the present embodiment, the outer periphery of the shell body 41b is provided with a plurality of installation sliding grooves 50 distributed at intervals, and the installation sliding grooves 50 are used for limiting and inserting fasteners (not shown) to realize complete machine installation of the fan motor; wherein, the periphery of the shell cylinder 41b is provided with a plurality of bulges extending to the radial outside thereof, the gaps between adjacent bulges form a mounting chute 50, wherein, the bulge ends extend along the inner side direction of the corresponding mounting chute 50 to form a limit part;
further preferably, in order to achieve flexible adjustment of the overall installation position, in the present embodiment, the single installation chute 50 includes a first protrusion 51, a second protrusion 52, and a third protrusion 53 extending radially outward thereof along the outer circumference of the housing cylinder 41b, wherein the second protrusion 52 forms a gap with the first protrusion 51 and the third protrusion 53 located at both sides thereof, respectively, the first installation chute unit 50a and the second installation chute unit 50b, respectively, while each protruding end extends in the direction of the inner side of its corresponding installation chute unit to form a stopper 54; the number of the recommended mounting sliding grooves 50 is 4-8, and the recommended mounting sliding grooves are uniformly distributed on the periphery of the shell cylinder 41b at intervals respectively; specifically, in the present embodiment, the number of the installation sliding grooves 50 is 4, and the installation sliding grooves 50 are distributed at 90-degree intervals on the outer periphery of the shell body 41b, so that the installation sliding grooves 50 adapted to the positions thereof can be selected according to the actual overall installation requirement;
preferably, in the present embodiment, the outer circumferences of the motor housing 41, the second end cover plate 42 and the controller housing 43 are respectively provided with a fastening installation groove 61 for inserting the fastener 60, and the fixed installation connection between the motor housing 41, the second end cover plate 42 and the controller housing 43 is achieved by the installation cooperation of the fastening installation groove 61 and the external fastener 60; in this embodiment, the cross section of all the fastening installation grooves 61 is in a closed shape, and the design of the fastening installation grooves 61 in the closed shape is not only beneficial to the strength of fastening installation connection, but also realizes the fastening installation on the periphery of the motor housing 41 without extending to penetrate into the motor housing 41, which is equivalent to the installation of the fastening pieces 60 on the surface of the housing, so that the external impurities (mainly water drops) can be effectively prevented from entering the motor housing and the controller housing through the fastening installation grooves in the installation process, and the integral sealing installation effect of the motor is further effectively ensured; in particular, in the present embodiment, the fastening member 60 to be fastened and inserted into the fastening and mounting groove 61 may be a bolt, but other fastening members may be used, and the present embodiment is not particularly limited thereto;
preferably, in order to further facilitate the heat dissipation effect, the outer surfaces of the installation housing (including the motor housing 41, the second end cover plate 42 and the controller housing 43) in this embodiment are all subjected to black spraying, so that the quick heat dissipation effect of the motor fan assembly 1 is facilitated while the corrosion resistance of the housing surface is improved.
Preferably, in order to improve the heat radiation effect and structural strength of the installation housing, a plurality of heat radiation reinforcing ribs 71 extending radially outward thereof are provided on the outer periphery of the housing cylinder 41b between the adjacent installation runners 50; the second end cover plate 42 and the outer periphery of the controller housing 43 are also provided with a plurality of heat radiation reinforcing ribs 71 extending radially outward thereof; the end face of the first end cover plate 41a is provided with reinforcing rib sheets 41d which are radially distributed; the end face of the controller shell 43 is provided with a plurality of linear heat dissipation ribs 43a;
preferably, in the present embodiment, the end surface of the controller housing 43 has a conical surface shape, wherein the cross-sectional area of the end surface on the outer side thereof is smaller than the cross-sectional area on the inner side thereof, so as to reduce the wind resistance of the fan and improve the energy efficiency of the fan; in order to achieve flexible and convenient wiring installation, preferably, in the present embodiment, a threading hole 43b is provided on the controller housing 43, and an electrical connection wire is led out after the joint 43c is inserted into the threading hole 43 b; in order to achieve a stable mounting effect on the controller circuit board, it is preferable that in the present embodiment, the inner wall surface of the controller case 43 is provided with a mounting step 43d fixedly mounted and connected to the controller circuit board.
Referring to fig. 12, 13, 14 and 15, the present embodiment further proposes a preferred rotor assembly 20, which includes a rotor core 21 fixedly mounted with the rotary shaft 10, wherein the rotor core 21 is formed by laminating a plurality of rotor core punching sheets 21 a; the periphery of the rotor core 21 is provided with magnetic steel embedded grooves 22 which are uniformly distributed at intervals, and permanent magnet steel 23 (the material of which can be a high-performance permanent magnet material such as neodymium iron boron) is embedded in each magnetic steel embedded groove 22, and the number of the magnetic steel embedded grooves 22 is 16 or 18 or 20;
preferably, in the present embodiment, the number of the magnetic steel embedded grooves 22 is 16, the magnetic steel embedded grooves 22 are correspondingly formed by correspondingly matching the dovetail teeth 23 with adjacent intervals, so as to ensure the stable embedding effect of the magnetic steel embedded grooves 22 on the permanent magnetic steel 23;
preferably, in the present embodiment, the inner periphery of the rotor core sheet 21a is provided with a plurality of weight-reducing grooves 24 distributed at uniform intervals, further preferably, the number of weight-reducing grooves 24 is 6 to 10, and particularly preferably, in the present embodiment, the number of weight-reducing grooves 24 is 8;
preferably, in order to ensure the sealing installation effect, in the present embodiment, the rotating shaft 10 penetrates through the penetrating hole 41e extending the first end cover plate 41a, and an oil seal 25 (specifically, a rubber seal ring may be used) for sealing is installed between the outside of the penetrating hole 41e and the outer periphery of the rotating shaft 10; in order to achieve an accurate mounting effect on the rotating shaft 10, it is preferable that in the present embodiment, the first end cover plate 41a and the second end cover plate 42 are provided with a first mounting groove and a second mounting groove, respectively, inside, and a first bearing 26a and a second bearing 26b are provided between each mounting groove and the rotating shaft 10, respectively.
Referring further to fig. 16 and 17, the present embodiment further proposes a preferred stator assembly 30, wherein the stator assembly 30 includes a stator core 31 having a plurality of stator slots 32, and stator windings 33 are disposed in the stator slots 32; the stator core 31 is formed by laminating a plurality of stator core punched sheets 31a, the outer diameter of the stator core punched sheets 31a is not more than 140mm, and the number of stator grooves 32 is 15, 18 or 24;
preferably, in the present embodiment, the stator core segment 31a has an outer diameter of not more than 145mm, and the number of stator slots 32 is 18; it is further particularly preferred that in the present embodiment, the outer diameter of the stator core segment 31a is in the range of 130 to 140mm, and the inner diameter of the stator core segment 31a is in the range of 75 to 95 mm; the stator slots 32 are correspondingly formed by matching adjacent spaced stator teeth 33, the width of the stator teeth 33 ranges from 5mm to 8mm, and the height of the stator yoke 34 ranges from 5mm to 8mm;
preferably, in the present embodiment, the stator winding 33 adopts a three-phase winding structure (specifically including a phase, B phase, and C phase), and it adopts a star connection; further preferably, in the present embodiment, each phase winding employs 2 parallel branches (specifically including A1 and A2 output in parallel, B1 and B2 output in parallel, and C1 and C2 output in parallel).
In the embodiment, the 16P surface embedded permanent magnet synchronous motor is adopted, the output power range is 0.75 kw-2.5 kw, the working rotating speed can be controlled in the optimal energy efficiency ratio working range of 750rpm in real time during actual working and running, the controller can be connected with a 0-10V power supply, a 485 serial port and the like for real-time dynamic control and speed regulation, and the efficiency of the permanent magnet synchronous motor is ensured to be not lower than IE5 energy efficiency standards.
The present embodiment is particularly suitable for being applied as a motor product of a poultry negative pressure fan, and of course, the motor product can be applied to industrial plants, washing machines or other related negative pressure fans needing an air convection function according to the needs, and the application is not particularly limited.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (3)
1. The permanent magnet synchronous motor and controller integrated assembly for the negative pressure fan is characterized by being applied as a livestock negative pressure fan product; comprises a permanent magnet synchronous motor and a controller which are connected into a whole; the permanent magnet synchronous motor comprises a rotor assembly and a stator assembly, wherein the rotor assembly and the rotor shaft are installed into a whole, and the stator assembly is positioned at the periphery of the rotor assembly;
the stator assembly is arranged in an installation cavity of the motor shell, the motor shell comprises a first end cover and a shell body, the first end cover and the shell body are integrally or separately connected in a sealing mode, the shell body is provided with the installation cavity, and two ends of the rotating shaft are respectively arranged on the first end cover and the second end cover in a relatively rotatable mode;
the shell body and the second end cover are fixedly and hermetically installed into a whole, a controller shell fixedly installed and connected with the second end cover plate is arranged on the outer side of the second end cover plate, the controller shell is provided with an installation inner cavity for installing a controller, and the controller is electrically connected with the stator assembly;
the periphery of the motor shell, the second end cover plate and the controller shell are respectively provided with a fastening installation groove for inserting a fastening piece, a single external fastening piece penetrates through the fastening installation grooves at the periphery of the motor shell, the second end cover plate and the controller shell, and the motor shell, the second end cover plate and the controller shell are fixedly installed and connected through the installation cooperation of the fastening installation grooves and the single external fastening piece; the cross sections of all the fastening installation grooves are in a closed shape, the fastening installation grooves in the closed shape are designed to be beneficial to the strength of fastening installation connection, the fastening installation on the periphery of the motor shell is realized, the motor shell does not need to be extended and penetrated into the motor shell, the situation that external impurities enter the motor shell and the controller shell through the fastening installation grooves in the installation process can be effectively ensured, and the integral sealing installation effect of the motor is effectively ensured;
the rotating shaft penetrates through the penetrating hole of the first end cover plate, and an oil seal for sealing is arranged between the outer side of the penetrating hole and the periphery of the rotating shaft; meanwhile, the circuit board of the controller is encapsulated by pouring sealant;
the periphery of the shell body is provided with a plurality of mounting sliding grooves which are distributed at intervals, and the mounting sliding grooves are used for limiting and inserting fasteners to realize complete machine mounting; the periphery of the shell body is provided with a plurality of bulges extending to the radial outer side of the shell body, and the gaps between the adjacent bulges form a mounting chute, wherein the bulge ends extend along the inner side direction of the corresponding mounting chute to form a limit part; and a plurality of heat dissipation reinforcing convex ribs extending to the radial outer side of the shell body are arranged on the periphery of the shell body between the adjacent installation sliding grooves.
2. The integrated assembly of a permanent magnet synchronous motor and a controller for a negative pressure fan according to claim 1, wherein the rotor assembly comprises a rotor core formed by laminating a plurality of rotor core punching sheets, the periphery of the rotor core is provided with magnetic steel embedded grooves which are uniformly distributed at intervals, and permanent magnet steel is embedded in each magnetic steel embedded groove; the stator assembly comprises a stator core with a plurality of stator slots, and stator windings are arranged in the stator slots.
3. The integrated assembly of the permanent magnet synchronous motor and the controller for the negative pressure fan according to claim 1, wherein the outer surface of the motor shell and/or the outer surface of the controller shell are subjected to black plastic spraying, so that the corrosion resistance of the shell surface is improved, and the rapid heat dissipation effect is facilitated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011497354.3A CN112688495B (en) | 2020-12-17 | 2020-12-17 | Permanent magnet synchronous motor and controller integrated assembly for negative pressure fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011497354.3A CN112688495B (en) | 2020-12-17 | 2020-12-17 | Permanent magnet synchronous motor and controller integrated assembly for negative pressure fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112688495A CN112688495A (en) | 2021-04-20 |
| CN112688495B true CN112688495B (en) | 2023-12-22 |
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| CN113497535A (en) * | 2021-07-12 | 2021-10-12 | 精基科技有限公司 | High-power suspension type permanent magnet direct drive motor |
| CN113644788B (en) * | 2021-08-16 | 2022-12-20 | 浙江盘毂动力科技有限公司 | A mechanical assembly of a motor and a controller |
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