CN112688495A - 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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- CN112688495A CN112688495A CN202011497354.3A CN202011497354A CN112688495A CN 112688495 A CN112688495 A CN 112688495A CN 202011497354 A CN202011497354 A CN 202011497354A CN 112688495 A CN112688495 A CN 112688495A
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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 component and a stator component, wherein the rotor component and a rotating shaft are integrally installed; the stator assembly is arranged in an installation inner cavity of the motor shell, the motor shell comprises a first end cover and a shell barrel body, the first end cover and the shell barrel body are connected in an integrated or split sealing mode, the shell barrel body is provided with the installation inner cavity, and two ends of the rotating shaft are respectively arranged on the first end cover and the second end cover in a relatively rotating mode; the shell barrel and the second end cover are fixedly and hermetically installed into a whole, and a controller shell fixedly installed and connected with the second end cover is arranged on the outer side of the second end cover plate; the fan has the advantages of high energy efficiency, less power 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 fan motor main body and the controller, and is particularly suitable for being applied as a livestock negative pressure fan product.
Description
Technical Field
The invention belongs to the field of negative pressure fans, particularly relates to a permanent magnet synchronous motor and controller integrated assembly for a negative pressure fan, and is particularly suitable for being applied as a livestock negative pressure fan product.
Background
The negative pressure fan product can provide a convection effect to air through driving, so that the fan product has wide application in many fields, such as animal husbandry, industrial factory buildings, washing machines or other related fields needing air convection function. Particularly, in the modern livestock breeding industry, each large livestock breeding base generally needs to adopt a livestock fan to carry out convection ventilation on the livestock breeding house, so that the comfort degree of the bred livestock is improved, and fan products generally need to work for a long time, so that a lot of electric quantity needs to be consumed.
The most core part of the negative pressure fan product is the fan blade, and the size of the negative pressure fan of the currently planned farms and industrial plants is developed in the direction of the large wind gathering cylinder and the large fan blade, so that the working speed of the negative pressure fan is required to be adjusted according to the actual working condition of the negative pressure fan. However, the motor adopted by the current negative pressure fan product is usually an induction asynchronous motor, and the adopted driving modes include two types: the first driving mode adopts a 4P induction asynchronous motor structure and belt speed reduction transmission, the motor drives the fan blades to work after being reduced by the belt pulley, and the driving mode has the defects of low fan rotating speed, small air volume and low fan energy efficiency ratio; the second type is that 8P response asynchronous machine structure adds the direct drive mode, adopts the work of motor direct drive fan blade promptly, and this drive mode has that the motor is heavier, the installation is inconvenient and bulky, and is big to the coverage area of fan air intake, windage is big, has reduced the energy efficiency ratio of fan.
In addition, because the fan motor is used as a driving structure of the negative pressure fan, in actual installation and application, in order to facilitate installation of the fan impeller and ensure good air convection of the fan impeller, the fan motor is often required to be installed in a suspension manner; meanwhile, in order to ensure the protection effect on the motor, the stator and the rotor are generally integrally packaged in a motor shell. The existing fan motor mainly adopts screws to penetrate through the interior of the motor shell for installation, and the installation structure is not only labor-consuming and time-consuming, but also can influence the overall sealing performance of the motor.
For this reason, the applicant wishes to seek improvements to the above technical problems separately and filed patent applications collectively.
Disclosure of Invention
In view of the above, an object of the present invention is to provide an integrated assembly of a permanent magnet synchronous motor and a controller for a fan, which has the advantages of high fan energy efficiency, less power consumption, small volume, reasonable layout, simple installation structure, and convenient installation process, and can achieve excellent protection, sealing, installation and heat dissipation effects on a fan motor main body and the controller, and is particularly suitable for being used as a livestock negative pressure fan product.
Before the technical scheme of the application is proposed, after theoretical calculation and accumulated experimental data analysis are carried out by the applicant, when the driving speed of a negative pressure fan product is about 750rpm (revolutions per minute), the advantage of the energy efficiency ratio (air quantity/electricity consumption) of the fan is most obvious under the condition of high negative pressure (>75PA), and meanwhile, the ventilation effect under the high-temperature environment (>38 ℃) is also best. However, the induction asynchronous motor adopted by the conventional negative pressure fan generally has a low working rotating speed which can only reach about 690rpm, the best working point of the fan is missed, the influence on the energy efficiency of the fan is large, and the induction asynchronous motor has low efficiency and large power consumption.
Therefore, the technical scheme adopted by the invention is as follows:
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 integrally installed and connected; the permanent magnet synchronous motor comprises a rotor assembly and a stator assembly, wherein the rotor assembly and the rotating shaft are integrally installed, and the stator assembly is positioned on the periphery of the rotor assembly;
the stator assembly is arranged in an installation inner cavity of a motor shell, the motor shell comprises a first end cover and a shell barrel body, the first end cover and the shell barrel body are connected in an integrated or split sealing mode, the shell barrel body is provided with the installation inner 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 casing barrel and the second end cover are fixedly and hermetically installed into a whole, the casing barrel is located on the outer side of the second end cover plate, a controller casing connected with the second end cover plate in a fixed installation mode is arranged on the outer side of the second end cover plate, the controller casing is provided with an installation inner cavity used for installing a controller, and the controller is electrically connected with the stator assembly.
Preferably, the periphery of the shell barrel is provided with a plurality of mounting chutes distributed at intervals, and the mounting chutes are used for limiting the insertion fasteners to realize the complete machine mounting.
Preferably, the two sides of the second end cover are respectively provided with a sealing ring and/or a packaging sealant in a limiting manner, so that external impurities (including moisture or dust impurities) are prevented from entering the motor shell and the controller shell.
Preferably, the motor housing, the second end cap and the controller assembly housing are respectively provided at their peripheries with fastening installation grooves for inserting fastening members, and the fastening installation grooves are closed in cross section.
Preferably, the periphery of the controller shell is provided with a fastening installation groove for inserting a fastening piece, and the cross section of the fastening installation groove is in a closed shape; the fastener that is equivalent to this application all installs at the casing surface, can guarantee powerfully to prevent that outside impurity (mainly for the water droplet) from getting into inside motor casing and controller casing through the fastening mounting groove in the installation.
Preferably, the periphery of the shell barrel is provided with a plurality of protrusions extending to the radial outer side of the shell barrel, the gaps between the adjacent protrusions form installation sliding grooves, and the protruding end edges extend along the inner side direction of the corresponding installation sliding grooves to form limiting parts.
Preferably, a plurality of heat dissipation reinforcing ribs extending to the radial outer side of the shell barrel are arranged on the periphery of the shell barrel between the adjacent mounting sliding grooves.
Preferably, the rotor assembly comprises a rotor core formed by laminating a plurality of rotor core punching sheets, magnetic steel embedded grooves are uniformly distributed at intervals on 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 through hole extending from the first end cover plate, and an oil seal for sealing is arranged between the outer side of the through hole and the periphery of the rotating shaft; and meanwhile, the circuit board of the controller is packaged by pouring sealant.
Preferably, black spraying is carried out on the outer surface of the motor shell and/or the controller shell, so that the corrosion resistance (including ammonia gas resistance, hydrogen sulfide resistance, heavy metal resistance and the like) of the surface of the shell is improved, and meanwhile, the quick heat dissipation effect is facilitated.
According to the invention, the permanent magnet synchronous motor is used as a driving motor of the negative pressure fan, when the negative pressure fan works actually, the working rotating speed can be controlled within the optimal energy efficiency ratio working range of 750rpm in real time, and the real-time dynamic control speed regulation can be carried out by actually accessing a 0-10V power supply, a 485 serial port and the like through a controller, so that the efficiency of the permanent magnet synchronous motor is not lower than the IE5 energy efficiency standard, the fan is high in energy efficiency, less in power consumption and small in size; the invention also integrally installs the stator assembly positioned at the periphery of the rotor assembly in the motor shell with an installation inner cavity, particularly, the first end cover plate, the shell barrel and the second end cover plate are fixedly, hermetically and fixedly connected, so that the effective protection effect on the fan motor is realized, meanwhile, the invention further provides that a plurality of installation sliding chutes which are distributed at intervals are arranged on the periphery of the shell barrel, when the blower motor is installed in a whole machine, the blower motor is quickly limited and spliced with an external installation fastener through an installation chute positioned at the periphery to realize the integral installation, but also can adjust the position of the mounting chute in real time by selecting the position of the shell cylinder according to the requirement of the integral mounting position, thereby realizing the flexible and convenient mounting requirement, meanwhile, the overall sealing performance of the fan motor cannot be affected negatively, and the service life of the fan motor is further ensured; this application still further provides by first end cover plate and the installation seal structure of the casing barrel body integrated connection shaping motor casing and the second end cover plate that has the installation inner chamber as fan motor main part, simultaneously through the outside at the second end cover plate setting rather than the controller casing that fixed mounting is connected, the three carries out the fixed sealing erection joint, and is rationally distributed, simple and the installation of installation simple structure is convenient, can realize the excellent protection seal installation and the radiating effect to fan motor main part and controller simultaneously.
The application still further provides the external diameter that sets up the stator core towards the piece and sets up to be not more than 140mm, can specifically set up to the specification at 15 or 18 or 24 stator slot structures simultaneously, with multipolar permanent magnet rotor subassembly mating reaction back, can realize the drive effect of high-power big rotational speed, the installation volume that occupies simultaneously is little, installation light in weight, and has reduced manufacturing cost powerfully.
This application still further provides and adopts embedded rotor subassembly structure in surface, specifically proposes to set up 16 or 18 or 20 magnet steel embedded grooves's structural design in the rotor core periphery, at the embedded permanent magnet steel of every magnet steel embedded groove, has realized multipolar embedded magnetic pole structure, can effectively improve the electromagnetism work efficiency of motor, with stator module mating reaction back, has realized the drive effect of high-power big rotational speed.
Drawings
FIG. 1 is a schematic view of an installation structure of an integrated assembly of a permanent magnet synchronous motor and a controller for a negative pressure fan according to an embodiment of the present invention;
FIG. 2 is a schematic view of the left end face of FIG. 1;
FIG. 3 is a schematic diagram 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 after being rotated by a certain angle;
FIG. 7 is a schematic view of the structure of FIG. 5 after rotating it by 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 after being rotated by a certain angle;
FIG. 10 is a side view of the structure of FIG. 8;
FIG. 11 is a schematic view of the construction of the second end cap plate of FIG. 1;
FIG. 12 is a cross-sectional structural view of FIG. 1;
FIG. 13 is a schematic structural view of the rotor assembly of FIG. 1;
FIG. 14 is a schematic view of a rotor core construction;
FIG. 15 is a schematic structural view of a rotor core lamination;
fig. 16 is a schematic structural view of a stator core lamination in fig. 1;
FIG. 17 is a schematic diagram of a three-phase wiring configuration for the stator windings;
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 integrally installed and connected; the permanent magnet synchronous motor comprises a rotor assembly and a stator assembly, wherein the rotor assembly and the rotating shaft are integrally installed; the stator assembly is arranged in an installation inner cavity of the motor shell, the motor shell comprises a first end cover and a shell barrel body, the first end cover and the shell barrel body are connected in an integrated or split sealing mode, the shell barrel body is provided with the installation inner cavity, and two ends of the rotating shaft are respectively arranged on the first end cover and the second end cover in a relatively rotating mode; the shell barrel 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 is arranged on the outer side of the second end cover, the controller shell is provided with an installation inner cavity used for installing a controller, and the controller is electrically connected with the stator assembly.
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, 2, 3 and 4, an integrated assembly 1 of a permanent magnet synchronous motor and a controller for a negative pressure fan includes a permanent magnet synchronous motor and a controller 2 which are integrally installed; the permanent magnet synchronous motor comprises a rotor assembly 20 integrally installed with a rotating shaft 10, and a stator assembly 30 positioned at the periphery of the rotor assembly 20, wherein the stator assembly 30 is installed in an installation inner cavity 41c of a motor shell 41;
referring to fig. 5, fig. 6, fig. 7 and fig. 11 in further combination, this embodiment further preferably proposes a mounting housing of a blower motor, which includes 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 inner cavity 41c, which are integrally connected, the mounting inner 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 formed by integral casting, and the housing cylinder 41b and the second end cover plate 42 are fixedly and hermetically mounted together; certainly, as a less preferred solution, in other embodiments, the first end cover plate 41a and the housing cylinder 41b may be separately and hermetically mounted, but obviously, this may also have a negative effect on the sealing effect by increasing the mounting process; the two ends of the rotating shaft 10 are respectively and relatively rotatably mounted 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 disposed outside the second end cover plate 42 and fixedly connected thereto, wherein the controller housing 43 has a mounting inner cavity 43e for mounting the controller 2, and the controller is electrically connected to the stator assembly 30; preferably, referring to fig. 18 in combination, in the present embodiment, two sides of the second end cap 42 are respectively provided with a first limiting groove 42a and a second limiting groove 42b, and 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 a packaging sealant (specifically, an anaerobic adhesive may be used) is adopted, wherein fig. 4 shows a first anaerobic rubber ring 45a and a second anaerobic rubber ring 45b, and the O- rings 44a, 44b and the anaerobic rubber rings 45a, 45b are respectively located at a connection position between the second end cap 42 and the motor housing 41 and the controller housing 43, so as to reliably prevent external impurities (including moisture or dust impurities) from entering the motor housing 41 and the controller housing 43; meanwhile, the circuit board 2a of the controller 2 in this embodiment is further encapsulated by a potting adhesive;
preferably, in the present embodiment, the outer periphery of the shell cylinder 41b is provided with a plurality of mounting chutes 50 distributed at intervals, and the mounting chutes 50 are used for limiting the insertion of fasteners (not shown) to implement the complete machine mounting of the fan motor; wherein, the periphery of the shell cylinder 41b is provided with a plurality of bulges extending to the radial outer side thereof, the gaps between the adjacent bulges form an installation chute 50, and the bulge end edges extend along the inner side direction of the corresponding installation chute 50 to form a limiting 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 along the outer periphery of the housing cylinder 41b to the radial outside thereof, wherein the second protrusion 52 and the first protrusion 51 and the third protrusion 53 located at both sides thereof respectively form a gap, the gap respectively forms a first installation chute unit 50a and a second installation chute unit 50b, and simultaneously each protrusion end extends along the inner side direction of its corresponding installation chute unit to form a limiting part 54; the number of the mounting sliding grooves 50 is 4-8, and the mounting sliding grooves are respectively and evenly distributed on the periphery of the shell cylinder 41b at intervals; particularly preferably, in the present embodiment, the number of the mounting chutes 50 is 4, the mounting chutes 50 are distributed at intervals of 90 degrees on the outer periphery of the housing cylinder 41b, and the mounting chutes 50 adapted to the positions thereof can be selected according to the actual overall mounting requirement;
preferably, in the present embodiment, the outer peripheries of the motor housing 41, the second end cover plate 42 and the controller housing 43 are respectively provided with fastening installation grooves 61 for inserting the fastening members 60, and the fixed installation connection among the motor housing 41, the second end cover plate 42 and the controller housing 43 is realized through the installation cooperation of the fastening installation grooves 61 and the external fastening members 60; in the embodiment, the cross sections of all the fastening installation grooves 61 are in a closed shape, the design of the closed-shape fastening installation grooves 61 is not only favorable for the strength of fastening installation connection, but also realizes fastening installation on the periphery of the motor shell 41 without extending through the motor shell 41, namely the fastening pieces 60 are all installed on the surface of the shell, so that external impurities (mainly water drops) can be prevented from entering the motor shell and the controller shell through the fastening installation grooves in the installation process, and the sealing installation effect on the whole motor is effectively ensured; specifically, in the present embodiment, the fastening member 60 fastened and inserted in the fastening installation groove 61 may be a bolt, and of course, a fastening member having another shape may be used, which is not particularly limited in the present embodiment;
preferably, in order to further facilitate the heat dissipation effect, black spraying is performed on the outer surface of the mounting housing (including the motor housing 41, the second end cover plate 42 and the controller housing 43) in this embodiment, so as to improve the corrosion resistance of the surface of the housing and facilitate the quick heat dissipation effect of the motor fan assembly 1.
Preferably, in order to improve the heat dissipation effect and the structural strength of the mounting casing, a plurality of heat dissipation reinforcing ribs 71 extending to the radial outer side of the casing cylinder 41b between the adjacent mounting chutes 50 are arranged on the periphery of the casing cylinder; the second end cover plate 42 and the outer periphery of the controller shell 43 are also provided with a plurality of heat dissipation reinforcing convex ribs 71 extending to the radial outer side; the end face of the first end cover plate 41a is provided with reinforcing rib pieces 41d which are distributed in the radial direction; the end surface of the controller shell 43 is provided with a plurality of linear radiating convex ribs 43 a;
preferably, in the present embodiment, an end surface of the controller housing 43 is in a conical shape, wherein a cross-sectional area of the end surface on an outer side thereof is smaller than a cross-sectional area of the end surface on an inner side thereof, so as to reduce wind resistance of the fan and improve energy efficiency of the fan; in order to realize flexible and convenient wiring installation, it is preferable that in the present embodiment, the controller case 43 is provided with a threading hole 43b, and an electrical connection wire is led out after the fitting 43c is inserted in the threading hole 43 b; in order to achieve the effect of firmly mounting the controller circuit board, it is preferable that the inner wall surface of the controller housing 43 is provided with a mounting step 43d fixedly mounted and connected with the controller circuit board in the present embodiment.
Referring to fig. 12, 13, 14 and 15, the present embodiment further provides a preferred rotor assembly 20, which includes a rotor core 21 fixedly mounted with the rotating 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, a permanent magnet steel 23 (the material of the permanent magnet steel can be specifically 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, 18 or 20;
preferably, in the present embodiment, the number of the magnetic steel embedded grooves 22 is 16, and the magnetic steel embedded grooves 22 are formed by corresponding and matching of adjacent and spaced dovetail teeth 23, 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 stamped sheet 21a is provided with a plurality of weight-reducing slots 24 distributed at regular intervals, further preferably, the number of the weight-reducing slots 24 is 6-10, and particularly preferably, in the present embodiment, the number of the weight-reducing slots 24 is 8;
preferably, in order to ensure the effect of mounting the seal, in the present embodiment, the rotating shaft 10 penetrates through a through hole 41e extending from the first end cover plate 41a, and an oil seal 25 (specifically, a rubber seal ring may be used) for sealing is mounted between the outer side of the through hole 41e and the outer periphery of the rotating shaft 10; in order to achieve the precise installation effect on the rotation shaft 10, it is preferable that, in the present embodiment, first and second installation grooves are respectively provided inside the first and second end cover plates 41a and 42, and first and second bearings 26a and 26b are respectively provided between the respective installation grooves and the rotation shaft 10.
Referring further to fig. 16 and 17, the present embodiment further provides a preferred stator assembly 30, where 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 punching sheets 31a, the outer diameter of each stator core punching sheet 31a is not more than 140mm, and the number of the stator slots 32 is 15, 18 or 24;
preferably, in the present embodiment, the outer diameter of the stator core stamped steel 31a is not greater than 145mm, and the number of the stator slots 32 is 18; more specifically, preferably, in the present embodiment, the outer diameter range of the stator core stamped piece 31a is 130-140mm, and the inner diameter range of the stator core stamped piece 31a is 75-95 mm; the stator slots 32 are formed by correspondingly matching adjacent and spaced stator teeth 33, the width range of the stator teeth 33 is 5-8mm, and the height range of the stator yoke 34 is 5-8 mm;
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 adopts 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, a 16P surface-embedded permanent magnet synchronous motor is adopted, the output power range is 0.75 kw-2.5 kw, when the permanent magnet synchronous motor is actually operated, the working rotating speed can be controlled within the optimal energy efficiency ratio working range of 750rpm in real time, a 0-10V power supply, a 485 serial port and the like can be actually accessed through a controller to carry out real-time dynamic control speed regulation, and the efficiency of the permanent magnet synchronous motor is ensured to be not lower than the IE5 energy efficiency standard.
The embodiment is particularly suitable for being applied as a livestock negative pressure fan motor product, and can be applied to industrial plants, washing machines or other fields of negative pressure fans needing air convection function according to requirements, 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 attributes 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 description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A permanent magnet synchronous motor and controller integrated assembly for a negative pressure fan is characterized by comprising a permanent magnet synchronous motor and a controller which are integrally installed and connected; the permanent magnet synchronous motor comprises a rotor assembly and a stator assembly, wherein the rotor assembly and the rotating shaft are integrally installed, and the stator assembly is positioned on the periphery of the rotor assembly;
the stator assembly is arranged in an installation inner cavity of a motor shell, the motor shell comprises a first end cover and a shell barrel body, the first end cover and the shell barrel body are connected in an integrated or split sealing mode, the shell barrel body is provided with the installation inner 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 casing barrel and the second end cover are fixedly and hermetically installed into a whole, the casing barrel is located on the outer side of the second end cover plate, a controller casing connected with the second end cover plate in a fixed installation mode is arranged on the outer side of the second end cover plate, the controller casing is provided with an installation inner cavity used for installing a controller, and the controller is electrically connected with the stator assembly.
2. The assembly of claim 1, wherein a plurality of mounting chutes are arranged on the periphery of the casing barrel and are distributed at intervals, and the mounting chutes are used for limiting and inserting fasteners to achieve complete machine mounting.
3. The PMSM and controller integrated assembly for the negative-pressure fan as claimed in claim 1, wherein the second end cap is respectively and limitedly provided with a sealing ring and/or a packaging sealant at two sides thereof for preventing external impurities from entering the motor housing and the controller housing.
4. The assembly of claim 1, wherein the motor housing, the second end cap, and the controller assembly housing are respectively provided with fastening installation slots for inserting fastening members, and the cross section of each fastening installation slot is closed.
5. The assembly of claim 1, wherein a fastening installation groove for inserting a fastening member is formed in an outer periphery of the controller housing, and a cross section of the fastening installation groove is in a closed shape; for preventing external foreign materials from entering the inside of the motor housing and the controller housing through the fastening installation grooves.
6. The assembly of claim 1, wherein the housing has a plurality of protrusions extending radially outward from the outer circumference of the housing, and gaps between adjacent protrusions form mounting slots, wherein the protrusions extend inward from the mounting slots to form a position-limiting portion.
7. The assembly of claim 1 or 6, wherein a plurality of heat dissipation reinforcing ribs extending radially outward are disposed on the outer periphery of the casing barrel between adjacent mounting grooves.
8. The PMSM and controller integrated assembly for the negative pressure fan as recited in claim 1, wherein the rotor assembly comprises a rotor core formed by laminating a plurality of rotor core laminations, magnetic steel embedded grooves are uniformly distributed at intervals on the periphery of the rotor core, and a 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.
9. The permanent magnet synchronous motor and controller integrated assembly for the negative pressure fan according to claim 1, wherein the rotating shaft penetrates through a through hole extending from the first end cover plate, and an oil seal for sealing is installed between the outer side of the through hole and the outer periphery of the rotating shaft; and meanwhile, the circuit board of the controller is packaged by pouring sealant.
10. The assembly of claim 1, wherein the outer surface of the motor housing and/or the controller housing is black-sprayed, so as to improve the corrosion resistance of the housing surface and facilitate rapid heat dissipation.
Priority Applications (1)
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Cited By (1)
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|---|---|---|---|---|
| CN113644788A (en) * | 2021-08-16 | 2021-11-12 | 浙江盘毂动力科技有限公司 | Mechanical assembly of motor and controller |
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| CN112688495B (en) | 2023-12-22 |
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