An outer rotor motor and a ceiling-mounted air conditioner having the same

Abstract

The application provides an outer rotor motor and a ceiling air conditioner with the same, wherein the outer rotor motor comprises a stator, the stator comprises an insulating framework, a stator core and a stator winding which are plastic sealed together, and the insulation of the stator is enhanced; an end of the stator is provided with a control panel, the internal space of the motor is saved, and the connection process of the power supply wire and the stator winding is optimized; the stator support is designed to comprise a first support and a second support which are detachably connected, so that the outer rotor motor can simultaneously install a first fan blade and a second fan blade, and the air volume of the motor is improved; the shaft of the transmission outer rotor motor is replaced by a support assembly, the exposed area of the motor is effectively reduced, and the dustproof and waterproof performance of the motor is greatly enhanced; a damping column and a damping ring are arranged between the first support and the second support and used for damping the radial and axial vibration of the stator; the motor and the fan blade are integrated, the problem of complex motor structure and difficult production is solved, and the occurrence of the spring clamping wear phenomenon is avoided.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of electric machines, and particularly relates to an outer rotor electric machine and a ceiling machine air conditioner with the same. BACKGROUND

[0002] The outer rotor electric machine comprises a base, a stator assembly and an outer rotor assembly, the stator assembly is arranged on the base, the outer rotor assembly comprises a shell and a rotor shaft, the shell is sleeved on the outer side of the stator assembly, and the rotor shaft is connected with the base through a bearing; in the prior art, the outer rotor electric machine adopts a traditional winding stator, a larger installation space needs to be left in the inner part or outer part of the electric machine to install a control board; thus, the inner space utilization rate of the electric machine is low, the volume of the electric machine is large, and the connection of the power supply line is difficult. SUMMARY

[0003] In view of this, the application provides an outer rotor electric machine and a ceiling machine air conditioner with the same to solve the problems of low inner space utilization rate of the electric machine, large volume of the electric machine and difficult connection of the power supply line in the prior art.

[0004] The application provides an outer rotor electric machine, comprising a stator, the stator comprises an insulation framework, a stator core arranged on the insulation framework and a stator winding wound on the stator core, and the insulation framework, the stator core and the stator winding are plastic-bonded together to form a stator; an end part of the stator is provided with a control board, which can be used for electric connection of a power supply line and the stator winding.

[0005] Further optionally, an end part of the insulation framework is formed with a pin hole, and a pin is arranged in the pin hole; the pin is welded with the control board, and the control board is provided with the power supply line.

[0006] Further optionally, the stator is formed with a mounting hole; the outer rotor electric machine further comprises a support assembly, the support assembly comprises a first support and a second support which can be connected together; the first support is formed with a first boss, and the second support is formed with a second boss; the first boss and the second boss are arranged in the mounting hole along the axial direction of the mounting hole, and at least one of the first boss and the second boss is fixedly connected with the stator.

[0007] Further optionally, an end part of the first boss is formed with a first positioning column, an end part of the second boss is formed with a first positioning hole, the first positioning column cooperates with the first positioning hole, and then the first support and the second support are connected; and / or,

[0008] An end part of the first boss is formed with a second positioning hole, an end part of the second boss is formed with a second positioning column, the second positioning column cooperates with the second positioning hole, and then the first support and the second support are connected.

[0009] Further optionally, the side of the first boss forms a first damping hole, and the side of the second boss forms a second damping hole;

[0010] Further, a damping column is arranged between the first boss and the second boss, one end of the damping column is arranged in the first damping hole, and the other end of the damping column is arranged in the second damping hole.

[0011] Further optionally, the first boss further forms a first support part, and the first support part and the first positioning column are arranged opposite to each other; a side wall of the first support part forms a first wire inlet, an end of the first boss forms a first wire outlet, and the first wire inlet and the first wire outlet are in communication through a first wire passing channel;

[0012] The second boss further forms a connecting column, and the connecting column and the second positioning column are arranged opposite to each other; an end of the second boss forms a second wire inlet, and a side wall of the connecting column forms a second wire outlet, and the second wire inlet and the second wire outlet are in communication through a second wire passing channel.

[0013] Further optionally, a damping ring is further arranged between the first boss and the second boss; the damping ring forms a first through hole, and when the first support part and the second support part are connected, the first positioning column passes through the first through hole and cooperates with the first positioning hole; and / or,

[0014] The damping ring forms a second through hole, and when the first support part and the second support part are connected, the second positioning column passes through the second through hole and cooperates with the second positioning hole.

[0015] Further optionally, the damping ring further forms a third through hole and a wire passing hole; when the first support part and the second support part are connected, the damping column passes through the third through hole, and then the two ends of the damping column are arranged in the first damping hole and the second damping hole, respectively;

[0016] One end of the wire passing hole is in communication with the first wire outlet, and the other end of the wire passing hole is in communication with the second wire inlet; when the first support part and the second support part are connected, the power line enters the first wire passing channel through the first wire inlet, enters the second wire passing channel through the wire passing hole and the second wire inlet, and is led out through the second wire outlet.

[0017] Further optionally, the first support part forms a first bearing chamber, the first bearing chamber forms a first step, and the first step is provided with a first bearing; the second boss further forms a second support part, and the second support part and the connecting column are at the same end of the second boss; the second support part forms a second bearing chamber, the second bearing chamber forms a second step, and the second step is provided with a second bearing.

[0018] Further optionally, a side wall of the mounting hole is formed with a main positioning structure, an outer side wall of the first support part is formed with a first auxiliary positioning structure, and an outer side wall of the second support part is formed with a second auxiliary positioning structure.

[0019] When the first boss is arranged in the mounting hole, positioning is achieved by corresponding the main positioning structure with the first auxiliary positioning structure.

[0020] When the second boss is arranged in the mounting hole, positioning is achieved by corresponding the main positioning structure with the second auxiliary positioning structure.

[0021] Further optionally, a side wall of the connecting column is further formed with a first connecting hole, and an end of the connecting column away from the second boss is formed with a second connecting hole, an axial direction of the second connecting hole is consistent with an extension direction of the connecting column; the first connecting hole and the second connecting hole are used for fixing the second support.

[0022] Further optionally, the support assembly further comprises a base, the base comprises a base body and a third boss formed on the base body; the third boss is formed with a limiting hole and a third connecting hole, an axial direction of the limiting hole is consistent with an extension direction of the third boss, and the third connecting hole is formed on a side wall of the third boss; the base body is formed with a fourth connecting hole, and the limiting hole, the third connecting hole and the fourth connecting hole are in communication.

[0023] When the second support is fixed, the end of the connecting column away from the second boss is arranged in the limiting hole, the first connecting hole and the third connecting hole are matched, the second connecting hole and the fourth connecting hole are matched, and then the second support is fixedly connected with the base.

[0024] Further optionally, an end of the third boss away from the base body is formed with a clamping groove, and a waterproof ring is arranged in the clamping groove.

[0025] Further optionally, the outer rotor motor further comprises a rotor assembly arranged outside the stator, the rotor assembly comprises an outer shell, a magnetic conducting ring and magnetic steels; the magnetic conducting ring is arranged on an inner side wall of the outer shell; the magnetic steels comprise a plurality of magnetic steels, and the plurality of magnetic steels are arranged along a circumferential direction of the outer shell and arranged outside an inner side of the magnetic conducting ring.

[0026] Further optionally, the outer rotor motor further comprises a fan blade assembly, the fan blade assembly comprises a first fan blade, the first fan blade comprises a first end cover and a first fan blade body; an end of the first end cover is matched with an end of the outer shell, and the first fan blade is connected with the rotor assembly.

[0027] The first fan blade body includes a plurality of first fan blade bodies, and the plurality of first fan blade bodies are arranged on the outer side wall of the first end cover in a circumferential direction of the first end cover.

[0028] Further, the first end cover is formed with a first annular wall, and a rotor groove is formed between the side wall of the first end cover and the first annular wall; when the first fan blade is connected with the rotor assembly, one end of the housing is embedded in the rotor groove, and the control board abuts against the first annular wall.

[0029] Further, the first end cover is further formed with a fourth boss and a third step coaxially arranged; when the first fan blade and the first support are connected, the first bearing is arranged between the fourth boss and the first support part, the outer ring of the first bearing is embedded on the side wall of the first bearing chamber and abuts against the first step, and the inner ring of the first bearing is sleeved on the fourth boss and abuts against the third step.

[0030] Further, the inner ring of the first bearing is formed with a first rotation stopping part, and the fourth boss is formed with a second rotation stopping part; when the inner ring of the first bearing is sleeved on the fourth boss, the first rotation stopping part and the second rotation stopping part are matched, and the first fan blade and the inner ring of the first bearing are synchronously rotated.

[0031] Further, the fan blade assembly further includes a second fan blade, the first fan blade and the second fan blade are connected together, and a mounting cavity is formed between the first fan blade and the second fan blade, a part of the rotor assembly, the stator, the first support and the second support are arranged in the mounting cavity, and the waterproof ring and the base are arranged at one end of the second fan blade away from the first fan blade.

[0032] Further, the second fan blade includes a second end cover and a plurality of second fan blade bodies; a plurality of second fan blade bodies are arranged on one end of the second end cover in a circumferential direction of the second end cover; the second end cover is formed with a second annular wall, the outer side wall of the first end cover is formed with a first fixing structure, the second annular wall is formed with a second fixing structure, and the inner side of the second annular wall is formed with a limiting part;

[0033] The outer side wall of the first end cover abuts against the limiting part, the first fixing structure and the second fixing structure are matched, and then the first fan blade and the second fan blade are connected;

[0034] After the first fan blade and the second fan blade are connected, the torsion direction of the first fan blade body is matched with the torsion direction of the second fan blade body.

[0035] Further, the second fan blade further includes an annular baffle; the annular baffle is connected with each of the plurality of second fan blade bodies;

[0036] The first fan blade body is located at the inner side of the annular baffle after the first fan blade and the second fan blade are connected.

[0037] Further optionally, the second end cover is further formed with a coaxially arranged fifth boss and a fourth step; when the second fan blade and the second support are connected, the second bearing is arranged between the fifth boss and the second support part, the outer ring of the second bearing is embedded on the side wall of the second bearing chamber and abuts on the second step, and the inner ring of the second bearing is sleeved on the fifth boss and abuts on the fourth step.

[0038] Further optionally, the fifth boss is formed with a through hole; when the second support and the base are connected, the connecting column is arranged in the limiting hole through the through hole.

[0039] Further optionally, the second end cover is further formed with a sixth boss, and the sixth boss is arranged at the other end of the second end cover; a reinforcing rib is arranged at the inner side of the sixth boss.

[0040] When the second support and the base are connected, the waterproof ring abuts on the sixth boss.

[0041] The application also provides a ceiling machine air conditioner, which comprises the outer rotor motor according to any one of the above.

[0042] Compared with the prior art, the application has the following beneficial effects:

[0043] (1) The insulation framework, the stator core and the stator winding are plastic-sealed together by injection molding to form a stator, thereby enhancing the insulation of the stator; the end of the insulation framework is provided with a pin, and the pin is welded with a control board, so that the control board can be arranged in the interior of the motor, thereby saving the interior space of the motor, reducing the volume of the motor and optimizing the connection process of the power line and the stator winding; the problem of large motor volume and large installation difficulty caused by large space occupied by the control board is solved;

[0044] (2) The first positioning column is arranged in the first positioning hole, the second positioning column is arranged in the second positioning hole, the first support bolt hole is matched with the second support bolt hole, and the first support and the second support are connected through the support connecting bolt, so that the outer rotor motor can simultaneously install the first fan blade and the second fan blade, thereby improving the air volume of the outer rotor motor; the shaft of the transmission outer rotor motor is replaced by the support assembly, thereby effectively reducing the exposed area of the motor and greatly enhancing the dustproof and waterproof performance of the motor;

[0045] (3) The damping column and the damping ring are arranged between the first support and the second support, which are used to reduce the radial and axial vibration of the stator, prevent the rigid contact between the first support and the second support when the motor starts, and reduce the internal noise of the motor; the power line enters the first wire passage and the second wire passage in sequence from the first wire inlet, and then is led out from the second wire outlet, so that the power line wiring rule, the electric connection and the reliable fixation are realized, and the problems of the disordered wiring, the unreliable electric connection and the fixation of the transmission outer rotor motor are solved.

[0046] (4) The positioning of the first support arranged in the mounting hole is realized through the correspondence between the main positioning structure and the first auxiliary positioning structure; the positioning of the second support arranged in the mounting hole is realized through the correspondence between the main positioning structure and the second auxiliary positioning structure; the positioning is accurate, and the connection between the support assembly and the stator is reliable; the first connecting hole and the third connecting hole are matched, the second connecting hole and the fourth connecting hole are matched, and the second support is fixedly connected with the base through the bolts.

[0047] (5) The rotor structure is simplified, the first support is connected with the first fan blade through the first bearing, the second support is connected with the second fan blade through the second bearing, the integration of the motor and the fan blade is realized, the problems of the complex motor structure and the difficult production are solved, the spring clamping wear phenomenon is avoided, and the service life of the motor is prolonged; the waterproof ring is arranged between the second blade and the base, which can prevent water from entering the interior of the motor, improves the waterproof performance of the motor, and solves the problems of the large gap between the upper end cover and the lower end cover in the existing outer rotor motor, the low waterproof and dustproof performance of the motor and the large safety hazard. BRIEF DESCRIPTION OF DRAWINGS

[0048] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other drawings can be derived from the provided drawings without creating labor.

[0049] The structures, proportions, sizes and the like shown in the specification are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and do not have technical significance to limit the implementation conditions of the present application, so any modification of the structure, change of the proportion relationship or adjustment of the size, which does not affect the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.

[0050] Figure 1a The structure schematic diagram of the stator (before plastic packaging) provided by the present application is shown in the following figure:

[0051] Figure 1bStructure diagram of the stator (after plastic packaging) provided by the present application;

[0052] Figure 2a And Figure 2b Structure diagram of the first support provided by the present application;

[0053] Figure 3a And Figure 3b Structure diagram of the second support provided by the present application;

[0054] Figure 4a Structure diagram of the damping column provided by the present application;

[0055] Figure 4b Structure diagram of the damping ring provided by the present application;

[0056] Figure 5a And Figure 5b Structure diagram of the base provided by the present application;

[0057] Figure 6a Structure diagram of the waterproof ring provided by the present application;

[0058] Figure 6b Structure diagram of the first bearing provided by the present application;

[0059] Figure 6c Structure diagram of the second bearing provided by the present application;

[0060] Figure 7a Assembly structure diagram of the stator and support assembly provided by the present application;

[0061] Figure 7b Exploded structure diagram of the stator and support assembly provided by the present application;

[0062] Figure 8a And Figure 8b Structure diagram of the shell provided by the present application;

[0063] Figure 8c Structure diagram of the magnetic steel provided by the present application;

[0064] Figure 8d Structure diagram of the rotor assembly provided by the present application;

[0065] Figure 9a And Figure 9b Structure diagram of the first fan blade provided by the present application;

[0066] Figure 10a And Figure 10b Structure diagram of the second fan blade provided by the present application;

[0067] Figure 11 An exploded structural schematic view of a rotor assembly and a fan blade assembly according to an embodiment of the present application;

[0068] Figure 12a An assembled structural schematic view of an outer rotor motor (without a fan blade assembly) according to an embodiment of the present application;

[0069] Figure 12b And Figure 12c An assembled structural schematic view of an outer rotor motor (with a fan blade assembly) according to an embodiment of the present application;

[0070] Figure 12d An exploded structural schematic view of an outer rotor motor according to an embodiment of the present application;

[0071] Figure 13a A structural schematic view of another embodiment of a base according to the present application;

[0072] Figure 13b An assembled structural schematic view of a base and a second support according to another embodiment of the present application;

[0073] In the figure:

[0074] 1 - stator; 11 - insulation skeleton; 111 - wire passage; 112 - pin hole; 12 - stator core; 121 - tooth portion; 122 - main positioning slot; 13 - stator winding; 14 - plastic package; 15 - mounting hole;

[0075] 21 - pin; 22 - control board; 23 - power cord;

[0076] 3 - first support; 31 - first boss; 311 - first positioning column; 312 - second positioning hole; 313 - first support bolt hole; 314 - first damping hole; 315 - first wire outlet; 32 - first support portion; 321 - first wire inlet; 322 - first bearing chamber; 323 - first step; 324 - second positioning slot;

[0077] 4 - second support; 41 - second boss; 411 - second positioning column; 412 - first positioning hole; 413 - second support bolt hole; 414 - second damping hole; 415 - second wire inlet; 42 - connecting column; 421 - second wire outlet; 422 - first connecting hole; 423 - second connecting hole; 43 - second support portion; 431 - second bearing chamber; 432 - second step; 434 - second positioning slot;

[0078] 51 - damping column; 52 - damping ring; 521 - first through hole; 522 - second through hole; 523 - third through hole; 524 - wire passing hole; 525 - damping ring screw hole; 53 - first bearing; 531 - first rotation-stopping part; 54 - second bearing; 55 - waterproof ring; 551 - flat clamping part; 56 - bracket connecting bolt; 571 - first base fixing bolt; 572 - second base fixing bolt;

[0079] 6 - base; 61 - base body; 611 - fourth connecting hole; 612 - motor fixing hole; 62 - third boss; 621 - limiting hole; 622 - third connecting hole; 623 - clamping groove; 63 - damping rubber ring;

[0080] 7 - rotor assembly; 71 - shell; 711 - axial part; 712 - radial part; 713 - rotor screw hole; 72 - magnetic conducting ring; 73 - magnetic steel;

[0081] 8 - first fan blade; 81 - first end cover; 811 - first fan blade connecting screw hole; 812 - first fan blade fastening bolt hole; 82 - first fan blade body; 83 - first annular wall; 84 - rotor groove; 851 - fourth boss; 852 - third step; 86 - wave pad;

[0082] 9 - second fan blade; 91 - second end cover; 92 - second fan blade body; 93 - second annular wall; 931 - second fan blade fastening bolt hole; 932 - limiting part; 941 - fifth boss; 942 - fourth step; 943 - through hole; 951 - sixth boss; 952 - reinforcing rib; 961 - annular baffle; 962 - annular support frame; 97 - red steel;

[0083] 101 - fan blade connecting screw; 102 - fan blade fastening bolt. DETAILED DESCRIPTION

[0084] The embodiments of the present application will be described in detail with specific embodiments, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the specification. Obviously, the described embodiments are part of the embodiments of the present application, but not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0085] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. "Plural" generally includes at least two, but does not exclude the case of including at least one.

[0086] It should be understood that the term "and / or" as used herein merely describes an associated relationship between associated objects, and can represent three relationships, for example, A and / or B, which can represent three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects.

[0087] It should also be noted that the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such product or system. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of another identical element in the product or system including the element.

[0088] The existing outer rotor motor mainly adopts a traditional winding stator, which needs to leave a larger installation space inside or outside the motor to install the control board; resulting in low internal space utilization of the motor, large motor volume and difficult power line connection;

[0089] The present application creatively provides an outer rotor motor, comprising a stator, the stator comprising an insulation framework, a stator core and a stator winding, and the insulation framework, the stator core and the stator winding are plastic encapsulated together to form the stator, enhancing the insulation of the stator; the end of the stator is provided with a control board, saving the internal space of the motor, reducing the volume of the motor, and optimizing the connection process of the power line and the stator winding; solving the problem of large volume and difficult installation of the motor caused by large space occupied by the control board.

[0090] <Stator>

[0091] As shown in Figure 1a and Figure 1b The present application provides an outer rotor motor, comprising a stator, the stator comprising an insulation framework 11, a stator core 12 and a stator winding 13, the stator framework is three times injection molded, the stator core 12 is arranged on the insulation framework 11, the stator winding 13 is wound on the stator core 12, and the insulation framework 11, the stator core 12 and the stator winding 13 are plastic encapsulated together to form the stator 1; the end of the stator 1 is provided with a control board 22, which can be used for electrical connection of the power line 23 and the stator winding 13;

[0092] Specifically, the outer side wall of the insulating framework 11 is formed with wire passing grooves 111 for arranging the bridge wires of the stator winding 13, the number and size of the wire passing grooves 111 can be adjusted according to actual needs to meet different winding modes; the end of the insulating framework 11 is formed with pin insertion holes 112, the pin insertion holes 112 are provided with pins 21; the pins 21 are welded with control boards 22, the control boards 22 are provided with power supply wires 23, the power supply wires 23 are electrically connected with the taps of the stator winding 13; the outer edge of the control board 22 extends out of the outer side wall of the stator 1 by a certain length, for arranging a Hall element, the Hall element can sense the position of the rotor; the pin insertion holes 112 include multiple, and the positions of the pins 21 can be adjusted according to actual needs to meet different winding modes; the control board 22 is in a circular arc structure, and the control board 22 is welded on the multiple pins 21 by soldering; the inner side of the stator core 12 is formed with mounting holes 15, and the outer side of the stator core 12 is formed with tooth portions 121;

[0093] The stator includes a plastic package 14, an insulating framework 11, a stator core 12 and a stator winding 13, the plastic package 14 plastic packages the insulating framework 11, the stator core 12 and the stator winding 13 together, so that only the pins 21, the tooth portions 121 and the mounting holes 15 are located outside the plastic package 14, and the remaining parts of the stator 1 are located inside the plastic package 14;

[0094] In summary, the insulating framework, the stator core and the stator winding are plastic packaged together by injection molding to form a stator, which enhances the insulation of the stator; the end of the insulating framework is provided with a pin, and the pin is welded with a control board, so that the control board can be arranged inside the motor, saving the internal space of the motor, reducing the volume of the motor and optimizing the connection process of the power supply wire and the stator winding; solving the problem of large space occupied by the control board leading to large volume and difficult installation of the motor.

[0095] <Support assembly>

[0096] First support and second support

[0097] As shown in Figure 2a , Figure 2b , Figure 3a and Figure 3b , the external rotor motor further includes a support assembly, the support assembly includes a first support 3 and a second support 4 which can be connected together; the first support 3 is formed with a first boss 31, and the second support 4 is formed with a second boss 41; the first boss 31 and the second boss 41 are arranged in the mounting hole 15 along the axial direction of the mounting hole 15, and the first boss 31 and the second boss 41 are both fixedly connected with the stator; specifically, the first support 3 and the second support 4 are both in a cylindrical structure;

[0098] Further, the first boss 31 is in a column type structure, and the end of the first boss 31 is formed with a first positioning column 311, a second positioning hole 312 and a first support bolt hole 313, and the first positioning column 311, the second positioning hole 312 and the first support bolt hole 313 all extend along the axial direction of the first boss 31, the first positioning column 311 and the second positioning hole 312 both include two, the two first positioning columns 311 and the two second positioning holes 312 are located on a first preset circle, and the first positioning column 311 and the second positioning hole 312 are arranged at intervals, the two first positioning columns 311 are located on a first preset diameter, the two second positioning holes 312 are located on a second preset diameter, and the first preset diameter is perpendicular to the second preset diameter; the first support bolt hole 313 includes four, the four first support bolt holes 313 are located on a second preset circle, the four first support bolt holes 313 are arranged at intervals and the interval distances are equal; the radius of the second preset circle is smaller than the radius of the first preset circle;

[0099] The second boss 41 is in a column type structure, and the end of the second boss 41 is formed with a second positioning column 411, a first positioning hole 412 and a second support bolt hole 413, and the second positioning column 411, the first positioning hole 412 and the second support bolt hole 413 all extend along the axial direction of the second boss 41, the second positioning column 411 and the first positioning hole 412 both include two, the two second positioning columns 411 and the two first positioning holes 412 are located on a third preset circle, and the second positioning column 411 and the first positioning hole 412 are arranged at intervals, the two second positioning columns 411 are located on a third preset diameter, the two first positioning holes 412 are located on a fourth preset diameter, and the third preset diameter is perpendicular to the fourth preset diameter; the second support bolt hole 413 includes four, the four second support bolt holes 413 are located on a fourth preset circle, the four second support bolt holes 413 are arranged at intervals and the interval distances are equal; the radius of the fourth preset circle is smaller than the radius of the third preset circle;

[0100] The first positioning column 311 is arranged in the first positioning hole 412, the second positioning column 411 is arranged in the second positioning hole 312, the first support bolt hole 313 is aligned with the second support bolt hole 413, and the support connecting bolt 56 is arranged in the corresponding first support bolt hole 313 and second support bolt hole 413 to realize the connection of the first support 3 and the second support 4;

[0101] The outer rotor motor can simultaneously install the first fan blade 8 and the second fan blade 9, thereby improving the air volume of the outer rotor motor; the support assembly replaces the rotating shaft of the transmission outer rotor motor, effectively reduces the exposed area of the motor, and greatly enhances the dustproof and waterproof performance of the motor.

[0102] In view of the problem of radial vibration of the stator, the side of the first boss 31 is formed with a first damping hole 314, and the side of the second boss 41 is formed with a second damping hole 414;

[0103] As shown in Figure 4a The first boss 31 and the second boss 41 are further provided with a damping column 51, one end of the damping column 51 is arranged in the first damping hole 314, and the other end of the damping column 51 is arranged in the second damping hole 414 when the first support 3 and the second support 4 are connected;

[0104] Specifically, the first damping hole 314 extends along the axial direction of the first boss 31, and the first damping hole 314 is closed on the side close to the first boss 31 and open on the side away from the first boss 31; the first damping hole 314 includes eight and two in a group, for four groups, two first damping holes 314 in a group are arranged at intervals, and four groups of first damping holes 314 are arranged at intervals on the fifth preset circle, and the radius of the fifth preset circle is greater than that of the first preset circle;

[0105] The second damping hole 414 extends along the axial direction of the second boss 41, and the second damping hole 414 is closed on the side close to the second boss 41 and open on the side away from the second boss 41; the second damping hole 414 includes eight and two in a group, for four groups, two second damping holes 414 in a group are arranged at intervals, and four groups of second damping holes 414 are arranged at intervals on the sixth preset circle, and the radius of the sixth preset circle is greater than that of the third preset circle;

[0106] The damping column 51 includes eight, the first damping hole 314 and the second damping hole 414 are correspondingly arranged when the first support 3 and the second support 4 are connected, the damping column 51 is arranged in the corresponding first damping hole 314 and the second damping hole 414, thereby relieving the radial vibration of the stator, preventing the rigid contact between the first support 3 and the second support 4 when the motor starts, and reducing the internal noise of the motor.

[0107] Further, the first boss 31 is further formed with a first support portion 32, and the first support portion 32 and the first positioning column 311 are arranged opposite to each other; a side wall of the first support portion 32 is formed with a first wire inlet 321, an end of the first boss 31 is formed with a first wire outlet 315, and the first wire inlet 321 and the first wire outlet 315 are communicated through a first wire passing channel; specifically, the first support portion 32 is a cylindrical structure, the first wire inlet 321 extends along the radial direction of the first support portion 32, the first wire outlet 315 is located at the center of the first boss 31, and the first wire passing channel is an L-shaped structure for arranging and fixing the power line 23;

[0108] The second boss 41 is further formed with a connecting column 42, and the connecting column 42 and the second positioning column 411 are oppositely arranged; an end of the second boss 41 is formed with a second wire inlet port 415, a side wall of the connecting column 42 is formed with a second wire outlet port 421, and the second wire inlet port 415 and the second wire outlet port 421 are in communication through a second wire passing channel; specifically, the connecting column 42 is in a cylindrical structure, the second wire outlet port 421 extends along the radial direction of the connecting column 42, the second wire inlet port 415 is located at the center of the second boss 41, and the second wire passing channel is in an L-shaped structure and is used for arranging and fixing the power line 23;

[0109] When the first support 3 and the second support 4 are connected, the first wire outlet port 315 and the second wire inlet port 415 are in communication, and then the power line 23 can enter the second wire passing channel from the first wire passing channel.

[0110] For the problem of axial vibration of the stator, the embodiment further provides that a damping ring 52 is arranged between the first boss 31 and the second boss 41; as shown in Figure 4b the damping ring 52 is formed with a first through hole 521, and when the first support 3 and the second support 4 are connected, the first positioning column 311 passes through the first through hole 521 and cooperates with the first positioning hole 412; the number of the first through hole 521 is the same as that of the first positioning column 311, and the positions of the first through hole 521 correspond to those of the first positioning column 311; the first boss 31 and the second boss 41 are perfectly sealed along the radial direction of the stator, and the vibration and noise of the motor are reduced;

[0111] The damping ring 52 is formed with a second through hole 522, and when the first support 3 and the second support 4 are connected, the second positioning column 411 passes through the second through hole 522 and cooperates with the second positioning hole 312; the number of the second through hole 522 is the same as that of the second positioning column 411, and the positions of the second through hole 522 correspond to those of the second positioning column 411;

[0112] The damping ring 52 is further formed with a third through hole 523, a wire passing hole 524 and a damping ring screw hole 525; when the first support 3 and the second support 4 are connected, the damping column 51 passes through the third through hole 523, and then the two ends of the damping column 51 are arranged in the first damping hole 314 and the second damping hole 414 respectively; the number of the third through hole 523 is the same as that of the damping column 51, and the positions of the third through hole 523 correspond to those of the damping column 51; when the first support 3 and the second support 4 are connected, the support connecting bolt 56 passes through the first support bolt hole 313, the damping ring screw hole 525 and the second support bolt hole 413 in sequence;

[0113] One end of the wire hole 524 is in communication with the first outlet 315, and the other end of the wire hole 524 is in communication with the second inlet 415; when the first support 3 is connected with the second support 4, the power cord 23 enters the first wire passage from the first inlet 321, passes through the wire hole 524 and the second inlet 415, and enters the second wire passage, and is led out from the second outlet 421; specifically, the first perforation 521, the second perforation 522, the third perforation 523 and the wire hole 524 are all column-shaped holes, and the wire hole 524 is located at the center of the damping ring 52;

[0114] The power cord wiring rule, electrical connection and fixation are reliable, and the problems of disordered wiring, unreliable electrical connection and fixation of the transmission outer rotor motor are solved.

[0115] In view of the problem that the first fan blade 8 is rotatably arranged on the first support 3 and the second fan blade 9 is rotatably arranged on the second support 4, the first support part 32 is formed with a first bearing chamber 322, a first step 323 is formed in the first bearing chamber 322, and a first bearing 53 is arranged on the first step 323; specifically, the side wall of the outer ring of the first bearing 53 is arranged on the side wall of the first bearing chamber 322, and one end of the outer ring of the first bearing 53 abuts on the first step 323; the first step 323 plays a role of preventing the first bearing 53 from being blocked;

[0116] The second support part 43 is formed with a second bearing chamber 431, a second step 432 is formed in the second bearing chamber 431, and a second bearing 54 is arranged on the second step 432; specifically, the side wall of the outer ring of the second bearing 54 is arranged on the side wall of the second bearing chamber 431, and one end of the outer ring of the second bearing 54 abuts on the second step 432; the second step 432 plays a role of preventing the second bearing 54 from being blocked.

[0117] In view of the problem of fixed connection of the first support 3 and the second support 4 with the stator, the side wall of the mounting hole 15 is formed with a main positioning groove 122, the outer side wall of the first support part 32 is formed with a first auxiliary positioning groove 324, and the outer side wall of the second support part 43 is formed with a second auxiliary positioning groove 434;

[0118] When the first boss 31 is embedded in the mounting hole 15, positioning between the first boss 31 and the mounting hole 15 is realized by corresponding the main positioning groove 122 with the first secondary positioning groove 324, and the first boss 31 is in interference fit with the mounting hole 15, which ensures that the first support 3 is tightly connected with the stator; when the second boss 41 is arranged in the mounting hole 15, positioning between the second boss 41 and the mounting hole 15 is realized by corresponding the main positioning groove 122 with the second secondary positioning groove 434, and the second boss 41 is in interference fit with the mounting hole 15, which ensures that the second support 4 is tightly connected with the stator; it is convenient for distinguishing in reproduction, positioning in winding the stator, and positioning in connecting the stator with the support assembly; when the stator and the support assembly are not tightly matched, a positioning piece can be arranged in the positioning groove, so that the stator and the support assembly are tightly matched;

[0119] For the fixing problem of the second support 4, the side wall of the connecting column 42 further forms a first connecting hole 422 extending along the radial direction of the connecting column 42, and the end of the connecting column 42 away from the second boss 41 forms a second connecting hole 423, the axial direction of the second connecting hole 423 is consistent with the extension direction of the connecting column 42; the first connecting hole 422 and the second connecting hole 423 are used for fixing the connection between the outer rotor motor and the second support 4 and the base 6, which is reliable, prevents the motor from falling and the second support 4 from rotating relative to the base 6 during operation, and improves the stability of the motor.

[0120] Base

[0121] As shown in Figure 5a and Figure 5b , the support assembly further includes a base, the base includes a base body 61 and a third boss 62 formed on the base body 61; the third boss 62 extends away from the base body 61, and forms a limiting hole 621 and a third connecting hole 622, the axial direction of the limiting hole 621 is consistent with the extension direction of the third boss 62, and the third connecting hole 622 is formed on the side wall of the third boss 62; the base body 61 forms a fourth connecting hole 611, and the limiting hole 621, the third connecting hole 622 and the fourth connecting hole 611 are in communication; specifically, the third boss 62 is a flat cylindrical structure, and the third connecting hole 622 extends along the radial direction of the third boss 62;

[0122] When the second support 4 is fixed, the end of the connecting column 42 away from the second boss 41 is arranged in the limiting hole 621, the first connecting hole 422 and the third connecting hole 622 are matched, the first base fixing screw 571 is arranged in the first connecting hole 422 and the third connecting hole 622, the second connecting hole 423 and the fourth connecting hole 611 are matched, the second base fixing screw 572 is arranged in the second connecting hole 423 and the fourth connecting hole 611, and then the second support 4 and the base 6 are fixedly connected, which ensures the stability of the second support 4;

[0123] As shown in Figure 13a and Figure 13b , the motor fixing hole 612 is formed at the four corners of the base body 61, the axial direction of the motor fixing hole 612 is consistent with the axial direction of the third boss 62, and the base body 61 is provided with a damping rubber ring 63 at the fixing hole; when the motor is not easy to install, the size of the base and the position of the motor fixing hole 612 can be appropriately adjusted, the extension length of the third boss 62 can be increased to increase the installation space, or the thickness of the damping rubber ring can be increased to simplify the installation of the motor.

[0124] Further, the end of the third boss 62 away from the base body 61 is formed with a clamping groove 623, which is an annular structure, as shown in Figure 6a , a waterproof ring 55 is arranged in the clamping groove 623, which can prevent water from entering the motor from the second bearing chamber 431; specifically, the waterproof ring 55 forms a flat clamping part 551, the structure of which is matched with the structure of the clamping groove 623, so as to ensure that the waterproof ring 55 is reliably fixed.

[0125] As shown in Figure 7a and Figure 7b , the bracket assembly is arranged in the mounting hole 15, and the arrangement sequence of the bracket assembly along the axial direction of the mounting hole 15 is: the first bearing 53, the first bracket 3, the damping ring 52, the damping column 51, the second bracket 4, the second bearing 54, the waterproof ring 55 and the base; the installation process of the stator and the bracket assembly is as follows:

[0126] Connect the first bracket 3 and the second bracket 4; embed the first boss 31 and the second boss 41 in the mounting hole 15, and make the first secondary positioning groove 324 and the second secondary positioning groove 434 correspond to the main positioning groove 122 respectively, so that the first boss 31 and the second boss 41 are respectively in interference fit with the mounting hole 15;

[0127] The first bearing 53 is arranged in the first bearing chamber 322, and the second bearing 54 is arranged in the second bearing chamber 431;

[0128] The waterproof ring 55 is sleeved on the connecting column 42, the second bracket 4 is fixedly connected with the base 6, and the waterproof ring 55 is clamped into the clamping groove 623, so that the assembly of the stator and the bracket assembly is completed;

[0129] However, it should be noted that in the process of installing the whole motor, the installation of the base and the waterproof ring 55 needs to be carried out after the first fan blade 8 and the second fan blade 9 are installed.

[0130] <rotor assembly>

[0131] As shown in Figure 8a , Figure 8b , Figure 8c and Figure 8dAs shown, the outer rotor motor further comprises a rotor assembly 7 arranged outside the stator, the rotor assembly 7 comprising a housing 71, a magnetic ring 72 and a magnetic steel 73; the housing 71 is in a cylindrical structure, the housing 71 is formed by casting aluminum and has an axial part 711 and a radial part 712, the housing 71 is spread along its circumference, the axial part 711 and the radial part 712 are in an L-shaped structure; the radial part 712 is formed with a plurality of rotor screw holes 713, the plurality of rotor screw holes 713 are arranged at intervals along the circumference of the housing 71, and are used for the fixed connection of the housing 71 and the first fan blade 8; the magnetic ring 72 is arranged on the inner side wall of the housing 71; the magnetic steel 73 comprises a plurality of magnetic steels 73, which are arranged along the circumference of the housing 71 and arranged outside the inner side of the magnetic ring 72, and the magnetic steel 73 is adhesively connected with the magnetic ring 72, which simplifies the rotor structure.

[0132] <fan blade assembly>

[0133] first fan blade

[0134] As Figure 9a and Figure 9b shown, the outer rotor motor further comprises a fan blade assembly, the fan blade assembly comprising a first fan blade 8, the first fan blade 8 comprising a first end cover 81 and a first fan blade body 82; the end of the first end cover 81 is matched with the end of the housing 71, and the first fan blade 8 is connected with the rotor assembly 7; specifically, the first end cover 81 is in a cylindrical structure, one end is closed, the end of the first end cover 81 is formed with a plurality of first fan blade connecting screw holes 811, the plurality of first fan blade connecting screw holes 811 are arranged at intervals along the circumference of the first end cover 81, the rotor screw hole 713 is arranged in alignment with the first fan blade connecting screw hole 811, the fan blade connecting screw 101 is arranged in the corresponding screw hole, then the first fan blade 8 is connected with the rotor assembly 7, so that the first fan blade 8 and the rotor assembly 7 can rotate synchronously;

[0135] The first fan blade body 82 comprises a plurality of first fan blade bodies 82, which are arranged on the outer side wall of the first end cover 81 along the circumference of the first end cover 81; a plurality of first fan blade fastening bolt holes 812 are further arranged on the outer side wall of the first end cover 81, the plurality of first fan blade fastening bolt holes 812 are arranged at intervals along the circumference of the first end cover 81, and are used for the connection between the first fan blade 8 and the second fan blade 9.

[0136] Further, the first end cover 81 is formed with a first annular wall 83, and a rotor groove 84 is formed between the side wall of the first end cover 81 and the first annular wall 83; as Figure 11As shown, when the first fan blade 8 is connected with the rotor assembly 7, the radial part 712 of the shell 71 is embedded in the rotor groove 84, the control plate 22 abuts against the first annular wall 83, the control plate 22 is above the magnetic steel 73, and the control plate 22 is provided with a Hall element to realize the induction function; the first annular wall 83 supports and fixes the control plate 22; in the actual production process, the axial height of the first annular wall 83 needs to be adjusted according to the required height of the control plate 22, and in order to avoid rigid contact with the control plate 22, a soft heat dissipation pad needs to be reasonably arranged between the first annular wall 83 and the control plate 22 when necessary, so as to protect the control plate 22;

[0137] In view of the problem that the first fan blade 8 is rotatably arranged on the first support 3, the embodiment further provides that the first end cover 81 is further formed with a coaxially arranged fourth boss 851 and a third step 852; the third step 852 is in the form of an annular structure and is sleeved outside the fourth boss 851; when the first fan blade 8 and the first support 3 are connected, the first bearing 53 is arranged between the fourth boss 851 and the first support part 32, the side wall of the outer ring of the first bearing 53 is embedded on the side wall of the first bearing chamber 322, and one end of the outer ring of the first bearing 53 abuts against the first step 323, and the outer ring of the first bearing 53 is in interference fit with the side wall of the first bearing chamber 322; the inner ring of the first bearing 53 is sleeved on the fourth boss 851, and one end of the inner ring of the first bearing 53 abuts against the third step 852, and the third step 852 plays a role of preventing the first bearing 53 from being blocked;

[0138] A wave pad 86 is arranged between the first bearing 53 and the third step 852 to avoid direct contact between the first bearing 53 and the third step 852 and damage.

[0139] Further, the inner ring of the first bearing 53 is formed with a first rotation-stopping part 531, and the fourth boss 851 is formed with a second rotation-stopping part; when the inner ring of the first bearing 53 is sleeved on the fourth boss 851, the first rotation-stopping part 531 and the second rotation-stopping part cooperate, and the first fan blade 8 and the inner ring of the first bearing 53 realize synchronous rotation; the first rotation-stopping part 531 and the second rotation-stopping part are both formed with a flat position, so that the inner ring of the first bearing 53 is in interference fit with the fourth boss 851.

[0140] Second fan blade

[0141] As shown in Figure 10a and Figure 10b , the fan blade assembly further comprises a second fan blade 9, the first fan blade 8 and the second fan blade 9 are connected together and an installation cavity is formed between the first fan blade 8 and the second fan blade 9, a part of the rotor assembly 7, the stator, the first support 3 and the second support 4 are arranged in the installation cavity, and the waterproof ring 55 and the base are arranged at one end of the second fan blade 9 away from the first fan blade 8; the first fan blade 8 and the second fan blade 9 are connected in a cover-closing manner; the first fan blade 8 is a common fan blade, and the second fan blade 9 is a centrifugal fan blade.

[0142] Further, the second fan blade 9 comprises a second end cover 91 and a plurality of second fan blade bodies 92; the plurality of second fan blade bodies 92 are arranged around one end of the second end cover 91 in the circumferential direction of the second end cover 91; when the first fan blade 8 and the second fan blade 9 are connected, the first fan blade body 82 is located on the inner side of the second fan blade body 92, and the torsion direction of the first fan blade body 82 is adapted to the torsion direction of the second fan blade body 92, that is, from the upper side of the first end cover 81 to the installation cavity, the first fan blade body 82 and the second fan blade body 92 rotate counterclockwise, air flows from the first fan blade body 82 to the second fan blade body 92, and then is blown out from the periphery of the second fan blade body 92;

[0143] The second end cover 91 is formed with a second annular wall 93, the second annular wall 93 is formed with a plurality of second fan blade mounting grooves, the second fan blade mounting grooves are formed with second fan blade fastening bolt holes 931, and the plurality of second fan blade fastening bolt holes 931 are arranged at intervals in the circumferential direction of the second end cover 91; the inner side of the second annular wall 93 is formed with a limiting portion 932; specifically, the limiting portion 932 is in an annular structure, used for fixing the first fan blade and preventing the first fan blade from exceeding the limit and damaging the motor when the first fan blade is fixed;

[0144] When the first fan blade 8 and the second fan blade 9 are connected, the outer side wall of the first end cover 81 abuts against the limiting portion 932, the first fan blade fastening bolt hole 812 and the second fan blade fastening bolt hole 931 are aligned, and the first fan blade 8 and the second fan blade 9 are connected together through the fan blade fastening bolt 102.

[0145] In view of the problems of small air output and low strength of the second fan blade 9, the embodiment proposes that the second fan blade 9 is convex as a whole, that is, high in the middle and low at the periphery, facilitating the flow of air; the second fan blade 9 further comprises an annular baffle 961 and an annular support frame 962; the annular baffle 961 is connected with the highest part of each second fan blade body 92 of the plurality of second fan blade bodies 92, and the annular support frame 962 is connected with the outermost side of each second fan blade body 92 of the plurality of second fan blade bodies 92, so that the second fan blade body 92 forms a certain wind guide area, the strength of the second fan blade is strengthened, and the air output of the second fan blade is improved;

[0146] After the first fan blade 8 and the second fan blade 9 are connected, the first fan blade body 82 is located on the inner side of the annular baffle 961, used for limiting the position of the first fan blade 8 and protecting the structure safety inside the motor.

[0147] In view of the problem that the second fan blade 9 is rotatably arranged on the second support 4, the second end cover 91 further forms a coaxially arranged fifth boss 941 and a fourth step 942 in the embodiment; the fourth step 942 is annular in structure and is arranged on the outside of the fifth boss 941; when the second fan blade 9 and the second support 4 are connected, the second bearing 54 is arranged between the fifth boss 941 and the second support part 43, the side wall of the outer ring of the second bearing 54 is embedded on the side wall of the second bearing chamber 431 and one end of the outer ring of the second bearing 54 abuts on the second step 432, and the outer ring of the second bearing 54 is in interference fit with the side wall of the second bearing chamber 431; the inner ring of the second bearing 54 is arranged on the fifth boss 941 and one end of the inner ring of the second bearing 54 abuts on the fourth step 942, and the fourth step 942 plays a role of preventing the second bearing 54 from being blocked;

[0148] The red steel 97 is arranged between the second bearing 54 and the fourth step 942 to avoid direct contact between the second bearing 54 and the fourth step 942 and damage;

[0149] Further, the fifth boss 941 forms a through hole 943; when the second support 4 and the base 6 are connected, the connecting column 42 is arranged in the limiting hole 621 through the through hole 943, thereby achieving installation of the motor.

[0150] Further, the second end cover 91 further forms a sixth boss 951, and the sixth boss 951 is arranged at two ends of the second end cover 91 opposite to the second fan blade body 92; the sixth boss 951 is annular in structure, and a plurality of reinforcing ribs 952 are arranged on the inner side of the sixth boss 951, each reinforcing rib 952 extends along the radial direction of the sixth boss 951, and the plurality of reinforcing ribs 952 are arranged at intervals along the circumferential direction of the sixth boss 951 to enhance the strength of the second fan blade 9;

[0151] When the second support 4 and the base 6 are connected, the waterproof ring 55 abuts on the sixth boss 951; the waterproof ring 55, the sixth boss 951 and the second bearing 54 can enhance the waterproof performance of the motor to a certain extent.

[0152] It should be noted that the number of fan blades is not limited, and any one of the first fan blade 8 and the second fan blade 9 can be cancelled according to actual needs, and only the structure required for installation is retained.

[0153] The embodiment also provides a ceiling machine air conditioner, which comprises the outer rotor motor of any one of the above-mentioned embodiments; the outer rotor motor makes the ceiling machine air conditioner more compact and easier to install;

[0154] As shown in Figure 12a , Figure 12b , Figure 12c and Figure 12d , the installation process of the outer rotor motor is as follows:

[0155] The first bracket 3 and the second bracket 4 are connected; the first boss 31 and the second boss 41 are embedded in the mounting hole 15, and the first auxiliary positioning groove 324 and the second auxiliary positioning groove 434 correspond to the main positioning groove 122 respectively, so that the first boss 31 and the second boss 41 are in interference fit with the mounting hole 15;

[0156] The first bearing 53 is arranged in the first bearing chamber 322, and the second bearing 54 is arranged in the second bearing chamber 431;

[0157] The shell 71, the magnetic conductive ring 72 and the magnetic steel 73 are arranged to form the rotor assembly 7, the first fan blade 8 is connected with the shell 71, the wave pad 86 is arranged between the first bearing 53 and the third step 852, and the fourth boss 851 is arranged in the inner ring of the first bearing 53, so that the first rotation stopping part 531 and the second rotation stopping part are matched;

[0158] The red steel 97 is arranged between the second bearing 54 and the fourth step 942, and the fifth boss 941 is arranged in the inner ring of the second bearing 54;

[0159] The first fan blade 8 and the second fan blade 9 are connected, the waterproof ring 55 is sleeved in the connecting column 42, and the second bracket 4 is fixedly connected with the base 6;

[0160] The waterproof ring 55 is clamped into the clamping groove 623, and the assembly of the overall motor is completed.

[0161] In summary, ① by means of the plastic package stator instead of the traditional skeleton winding design, the insulation capacity of the stator is improved, the control panel 22 is arranged in the motor, the problem of large space occupation of the motor caused by the external wiring control panel 22 is solved, and the purpose of saving space is achieved;

[0162] ② through the rotor assembly 7 design, the rotor structure is simplified, the bracket assembly is used instead of the traditional motor shaft, and the fan blade is used instead of the upper end cover and the lower end cover of the traditional outer rotor motor, the motor is designed as a cover type, the motor structure is more compact and the installation is more convenient, the production difficulty of the upper end cover and the lower bracket of the motor is solved, and the purpose of optimizing the production structure is achieved;

[0163] ③ the first bracket 3 and the first fan blade 8 are connected through the first bearing 53, the second bracket 4 and the second fan blade 9 are connected through the second bearing 54, the self-locking structure is designed, the motor and the fan blade are integrated, the occurrence of the card spring wear phenomenon is avoided in the long-time running working condition, the purpose of prolonging the service life of the motor is achieved; the exposed area of the motor is reduced, and the dustproof and waterproof performance of the motor is enhanced;

[0164] IV. A waterproof ring 55 is arranged between the second blade and the base, which can prevent water from entering the interior of the motor, improve the waterproof performance of the motor, solve the problem of large gap between the upper end cover and the lower end cover in the existing outer rotor motor, and reduce the safety hazard of low waterproof and dustproof performance of the motor, so that the motor can work in some special environment, and the applicability of the motor is improved;

[0165] V. The double-blade structure improves the air output; the hollow structure of the bracket makes it unnecessary to connect the power cord 23 from the lower end cover bracket, and the power cord 23 can be directly connected from the first bracket 3 and the second bracket 4, which improves the dustproof and waterproof performance of the motor and solves the problem of difficult wiring of the traditional motor; the damping ring 52 and the damping column 51 arranged between the first bracket 3 and the second bracket 4 improve the reliability of the motor, prevent the safety hazard of rigid contact during the starting of the motor, and reduce noise; the second bracket 4 and the base 6 are fastened and connected by cross-shaped bolts, which can effectively avoid the risk of falling when applied to a ceiling air conditioner.

[0166] The exemplary embodiments of the present disclosure are specifically shown and described above. It should be understood that the present disclosure is not limited to the detailed structure, arrangement or implementation method described herein; on the contrary, the present disclosure is intended to cover various modifications and equivalent arrangements within the spirit and scope of the appended claims.

Claims

1. An external rotor electric machine characterized by, The outer rotor motor comprises: a stator comprising an insulating framework, a stator core arranged on the insulating framework, and a stator winding wound on the stator core, the insulating framework, the stator core, and the stator winding being integrally plastic encapsulated together to form the stator; the stator is formed with a mounting hole; a bracket assembly comprising a first bracket and a second bracket detachably connected together; the first bracket is formed with a first boss, and the second bracket is formed with a second boss; the first boss and the second boss are arranged in the mounting hole along an axial direction of the mounting hole, and at least one of the first boss and the second boss is fixedly connected with the stator; a side portion of the first boss is formed with a first damping hole, and a side portion of the second boss is formed with a second damping hole; a damping column is further arranged between the first boss and the second boss, one end of the damping column is arranged in the first damping hole when the first bracket and the second bracket are connected, and the other end of the damping column is arranged in the second damping hole.

2. An external rotor electric machine according to claim 1, characterized in that an end portion of the insulating framework is formed with a pin hole, and a pin is arranged in the pin hole; a control board is welded on the pin, a power line is arranged on the control board, and the power line is electrically connected with the stator winding.

3. The external rotor electric machine of claim 1, wherein, an end portion of the first boss is formed with a first positioning column, an end portion of the second boss is formed with a first positioning hole, the first positioning column cooperates with the first positioning hole, and then the first bracket and the second bracket are connected; and / or, an end portion of the first boss is formed with a second positioning hole, an end portion of the second boss is formed with a second positioning column, the second positioning column cooperates with the second positioning hole, and then the first bracket and the second bracket are connected.

4. An external rotor electric motor as claimed in claim 3, characterised in that, the first boss is further formed with a first supporting portion, and the first supporting portion and the first positioning column are oppositely arranged; a side wall of the first supporting portion is formed with a first wire inlet, an end portion of the first boss is formed with a first wire outlet, and the first wire inlet and the first wire outlet are communicated through a first wire passing channel; the second boss is further formed with a connecting column, and the connecting column and the second positioning column are oppositely arranged; an end portion of the second boss is formed with a second wire inlet, a side wall of the connecting column is formed with a second wire outlet, and the second wire inlet and the second wire outlet are communicated through a second wire passing channel.

5. An external rotor electric motor as claimed in claim 4, characterised in that, a damping ring is further arranged between the first boss and the second boss; the damping ring is formed with a first through hole, the first positioning column passes through the first through hole to cooperate with the first positioning hole when the first bracket and the second bracket are connected; and / or, the damping ring is formed with a second through hole, the second positioning column passes through the second through hole to cooperate with the second positioning hole when the first bracket and the second bracket are connected.

6. An external rotor electric machine according to claim 5, characterized in that the damping ring is further formed with a third through hole and a wire passing hole; the damping column passes through the third through hole when the first bracket and the second bracket are connected, and then two ends of the damping column are arranged in the first damping hole and the second damping hole, respectively. One end of the wire hole is communicated with the first wire outlet, and the other end of the wire hole is communicated with the second wire inlet; when the first support and the second support are connected, the power cord electrically connected with the stator winding enters the first wire passage through the first wire inlet, enters the second wire passage through the wire hole and the second wire inlet, and is led out through the second wire outlet.

7. An external rotor electric motor as claimed in claim 4, characterised in that, The first support portion is formed with a first bearing chamber, a first step is formed in the first bearing chamber, and a first bearing is arranged on the first step; the second boss is further formed with a second support portion, and the second support portion is located at the same end of the second boss as the connecting column; the second support portion is formed with a second bearing chamber, a second step is formed in the second bearing chamber, and a second bearing is arranged on the second step.

8. An external rotor electric motor as claimed in claim 7, characterised in that, The side wall of the mounting hole is formed with a main positioning structure, the outer side wall of the first support portion is formed with a first auxiliary positioning structure, and the outer side wall of the second support portion is formed with a second auxiliary positioning structure; When the first boss is arranged in the mounting hole, positioning is achieved by matching the main positioning structure with the first auxiliary positioning structure; When the second boss is arranged in the mounting hole, positioning is achieved by matching the main positioning structure with the second auxiliary positioning structure.

9. An external rotor electric motor as claimed in claim 7, characterised in that, The side wall of the connecting column is further formed with a first connecting hole, and the end of the connecting column away from the second boss is formed with a second connecting hole, the axial direction of the second connecting hole is consistent with the extension direction of the connecting column; the first connecting hole and the second connecting hole are used for fixing the second support.

10. An external rotor electric machine according to claim 9, characterized in that, The support assembly further comprises a base, and the base comprises a base body and a third boss formed on the base body; the third boss is formed with a limiting hole and a third connecting hole, the axial direction of the limiting hole is consistent with the extension direction of the third boss, and the third connecting hole is formed on the side wall of the third boss; the base body is formed with a fourth connecting hole, and the limiting hole, the third connecting hole and the fourth connecting hole are communicated; When the second support is fixed, the end of the connecting column away from the second boss is arranged in the limiting hole, the first connecting hole and the third connecting hole are matched, the second connecting hole and the fourth connecting hole are matched, and then the second support is fixedly connected with the base.

11. An external rotor electric machine according to claim 10, characterized in that, The end of the third boss away from the base body is formed with a clamping groove, and a waterproof ring is arranged in the clamping groove.

12. An external rotor electric motor as claimed in claim 11, characterised in that, The outer rotor motor further comprises a rotor assembly arranged outside the stator, the rotor assembly comprises an outer shell, a magnetic conducting ring and magnetic steels; the magnetic conducting ring is arranged on the inner side wall of the outer shell; the magnetic steels comprise a plurality of magnetic steels, and the plurality of magnetic steels are arranged on the outer side wall of the outer shell and surround the inner side of the magnetic conducting ring.

13. An external rotor electric machine according to claim 12, characterized in that, The outer rotor motor further comprises a fan blade assembly, the fan blade assembly comprises a first fan blade, and the first fan blade comprises a first end cover and a first fan blade body; the end of the first end cover is matched with the end of the outer shell, and the first fan blade is connected with the rotor assembly; The first fan blade body comprises a plurality of first fan blade bodies, and the plurality of first fan blade bodies are arranged on the outer side wall of the first end cover in the circumferential direction of the first end cover.

14. An external rotor electric motor as claimed in claim 13, characterised in that, The first end cover is formed with a first annular wall, and a rotor slot is formed between the side wall of the first end cover and the first annular wall; when the first fan blade is connected with the rotor assembly, one end of the outer shell is embedded in the rotor slot, and the control panel of the outer rotor motor abuts against the first annular wall.

15. The external rotor electric machine of claim 13, wherein, The first end cover is further formed with a fourth boss and a third step coaxially arranged; when the first fan blade is connected with the first support, the first bearing is arranged between the fourth boss and the first supporting part, the outer ring of the first bearing is embedded on the side wall of the first bearing chamber and abuts against the first step, and the inner ring of the first bearing is sleeved on the fourth boss and abuts against the third step.

16. An external rotor electric machine as claimed in claim 15, characterised in that, The inner ring of the first bearing is formed with a first rotation-stopping part, and the fourth boss is formed with a second rotation-stopping part; when the inner ring of the first bearing is sleeved on the fourth boss, the first rotation-stopping part and the second rotation-stopping part are matched, and the first fan blade and the inner ring of the first bearing are synchronously rotated.

17. The external rotor electric machine of claim 13, wherein, The fan blade assembly further comprises a second fan blade, the first fan blade and the second fan blade are connected together, and a mounting cavity is formed between the first fan blade and the second fan blade; the rotor assembly, the stator, a part of the first support and the second support are arranged in the mounting cavity, and the waterproof ring and the base are arranged at one end of the second fan blade away from the first fan blade.

18. An external rotor electric motor as claimed in claim 17, characterised in that, The second fan blade comprises a second end cover and a plurality of second fan blade bodies; the plurality of second fan blade bodies are arranged at one end of the second end cover in the circumferential direction of the second end cover; the second end cover is formed with a second annular wall, the outer side wall of the first end cover is formed with a first fixing structure, the second annular wall is formed with a second fixing structure, and the inner side of the second annular wall is formed with a limiting part; The outer side wall of the first end cover abuts against the limiting part, the first fixing structure and the second fixing structure are matched, and then the first fan blade and the second fan blade are connected; After the first fan blade and the second fan blade are connected, the torsion direction of the first fan blade body is adapted to the torsion direction of the second fan blade body.

19. An external rotor electric motor as claimed in claim 18, characterised in that, The second fan blade further comprises an annular baffle; the annular baffle is connected with each second fan blade body of the plurality of second fan blade bodies; After the first fan blade and the second fan blade are connected, the first fan blade body is located on the inner side of the annular baffle.

20. The external rotor electric machine of claim 18, wherein, The second end cover is further formed with a fifth boss and a fourth step coaxially arranged; when the second fan blade is connected with the second support, the second bearing is arranged between the fifth boss and the second supporting part, the outer ring of the second bearing is embedded on the side wall of the second bearing chamber and abuts against the second step, and the inner ring of the second bearing is sleeved on the fifth boss and abuts against the fourth step.

21. An external rotor electric motor as claimed in claim 20, characterised in that, The fifth boss is formed with a through hole; when the second support is connected with the base, the connecting column is arranged in the limiting hole through the through hole.

22. The external rotor electric machine of claim 18, wherein, The second end cover is further formed with a sixth boss, and the sixth boss is arranged at the other end of the second end cover; the inner side of the sixth boss is provided with a reinforcing rib; When the second support is connected with the base, the waterproof ring abuts against the sixth boss.

23. A rooftop air conditioner characterized by comprising: The ceiling air conditioner includes the outer rotor motor of any one of claims 1-22.

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