CN213990314U - Motor assembly, air conditioner indoor unit and air conditioner - Google Patents

Abstract

The embodiment of the application provides a motor assembly, an air conditioner indoor unit and an air conditioner, wherein the motor assembly comprises an outer rotor motor and an installation shell, the outer rotor motor comprises a power part and a power output shaft, the power part comprises an outer rotor and a stator arranged in the outer rotor, and the power output shaft is connected with the outer rotor; the mounting shell is fixedly connected with the stator, the power part is arranged in the mounting shell, at least one end of the power output shaft penetrates out of the mounting shell, first supporting flanges are arranged at two opposite axial ends of the outer rotor motor of the mounting shell, and the motor assembly is supported at a position to be mounted through the first supporting flanges. The motor assembly of this application embodiment, the mounting means is two point supports in the axial, is the same with inner rotor motor, under the condition that need not change other spare part structures, can directly change the inner rotor motor of prior art for the motor assembly of this application embodiment, so can realize with inner rotor motor's interchange installation, interchangeability is better, promotes motor assembly's application scope.

Description

Motor assembly, air conditioner indoor unit and air conditioner

Technical Field

The application relates to the technical field of air conditioning, in particular to a motor assembly, an air conditioner indoor unit and an air conditioner.

Background

In the related art, one of the more common types of motors is a motor with a stator on the outside and a rotor on the inside, and the motor is called an "inner rotor motor". Another type of motor is a motor in which the stator armature is inside and the rotor with permanent magnets is outside, and this structure is called an "outer rotor motor" or an "inner stator motor". The rotor inertia and the output torque/output power ratio of the outer rotor motor are high, so that the outer rotor motor can be used in occasions needing to output large torque.

In addition, because the installation modes of the inner rotor motor and the outer rotor motor are obviously different, at present, a user cannot replace the inner rotor motor with the outer rotor motor on the same equipment under the condition of not changing the installation structure of the equipment.

SUMMERY OF THE UTILITY MODEL

In view of the above, embodiments of the present application are directed to providing a motor assembly, an air conditioner indoor unit and an air conditioner capable of using a mounting structure commonly with an inner stator motor.

To achieve the above object, an embodiment of the present application provides an electric machine assembly, including:

the outer rotor motor comprises a power part and a power output shaft, the power part comprises an outer rotor and a stator arranged in the outer rotor, and the power output shaft is connected with the outer rotor;

with stator fixed connection's installation shell, power portion set up in the installation shell, power output shaft's at least one end is worn out the installation shell, the installation shell is followed power output shaft axial both ends all are provided with first supporting flange, motor assembly passes through each first supporting flange supports in treating the mounted position.

In some embodiments, an axial first end of the power portion is fixedly connected with the mounting shell through the stator, and an axial second end of the power portion is rotatably supported on the mounting shell through the outer rotor.

In some embodiments, an axial side of the outer rotor facing away from the stator is provided with a second support flange, wherein one of the first support flanges is hollow inside, and the second support flange extends into the first support flange.

In some embodiments, the motor assembly includes a first bearing sleeved on the second support flange, and the first bearing is disposed between the first support flange and the second support flange.

In some embodiments, a side of the stator for connection with the mounting case is formed with a third support flange through which the power output shaft passes, the third support flange extending into the corresponding first support flange.

In some embodiments, the mounting shell includes a first shell and a second shell that are axially butted along the outer rotor motor, the power portion is located in a space that is jointly enclosed by the first shell and the second shell, one of the first support flanges is disposed on the first shell, and the other of the first support flanges is disposed on the second shell.

In some embodiments, one of the first shell and the second shell is provided with a snap, and the other is provided with a slot, and the snap and the slot are in snap fit.

In some embodiments, the locking groove is disposed on the first shell, the locking groove includes an inlet sub-groove and a locking sub-groove which are communicated, the inlet sub-groove extends along the axial direction of the first shell, the locking sub-groove extends along the circumferential direction of the first shell from the end of the inlet sub-groove, the buckle protrudes from the second shell circumferential surface, and the buckle can enter the locking sub-groove from the inlet sub-groove; the first housing and the second housing are fixedly connected by at least one screw.

In some embodiments, the first housing is provided with a coupling piece extending radially outward, the coupling piece is provided with a through hole, and the outer surface of the second housing is provided with a boss into which a screw is inserted through the through hole.

In some embodiments, the first shell is provided with a first notch, the first notch penetrates through an edge of the first shell for being in butt joint with the second shell, the second shell is provided with a second notch, the second notch penetrates through an edge of the second shell for being in butt joint with the first shell, the first notch and the second notch together form a wire passing groove, and a wire body of the outer rotor motor passes through the wire passing groove.

In some embodiments, the electric machine assembly includes a damping sleeve disposed over the first support flange.

The embodiment of the application also provides an air conditioner indoor unit, which comprises a chassis, a cross flow wind wheel, a heat exchanger and any one of the motor assemblies; the base plate is provided with a volute extending along the length direction of the base plate and a motor mounting groove positioned at one end of the volute; the cross-flow wind wheel is rotationally arranged in the volute; the heat exchanger is connected to the chassis, the heat exchanger extends along the length direction of the chassis, and airflow subjected to heat exchange by the heat exchanger enters the volute under the action of the cross-flow wind wheel; the motor assembly is arranged in the motor mounting groove and supported on the side plate corresponding to the motor mounting groove through the two first supporting flanges, and the power output shaft is rotatably connected with the cross-flow wind wheel to drive the cross-flow wind wheel to rotate.

In some embodiments, the base plate is provided with a water guide channel for containing the condensed water of the heat exchanger and two water containing grooves communicated with the water guide channel, the water guide channel surrounds the periphery of the volute, and the condensed water in the water guide channel can be collected into the corresponding water containing grooves.

In some embodiments, the motor mounting groove is spaced apart from a side plate of the volute on a side thereof and a side wall of the volute to form a part of the water guide passage.

The embodiment of the application further provides an air conditioner, which comprises an air conditioner outdoor unit and any one of the air conditioner indoor units, wherein the air conditioner outdoor unit is connected with the air conditioner indoor unit through a refrigerant pipe.

The motor assembly of this application embodiment, when needing to install the motor assembly, support two first supporting flange and treat the mounted position, realize the two some supports of axial of motor assembly, avoid the motor assembly to become single-point cantilever support form. That is to say, the motor assembly of the embodiment of the present application is installed in the same manner as the inner rotor motor, and is supported by two points in the axial direction, so that the inner rotor motor in the prior art can be directly replaced by the motor assembly of the embodiment of the present application without changing the structure of other parts, so that the motor assembly can be installed in an interchangeable manner with the inner rotor motor, the interchangeability is good, and the application range of the motor assembly is expanded; because the cost of the outer rotor motor is relatively low, and the motor assembly of the embodiment of the application can be interchangeably installed with the inner rotor motor, when the motor assembly is assembled on other equipment, the updating iteration of the equipment can be realized on the basis of reducing the manufacturing cost of the equipment.

Drawings

Fig. 1 is a schematic structural diagram of an electric machine assembly according to an embodiment of the present application, in which a damping sleeve is omitted;

FIG. 2 is a schematic view of the structure of FIG. 1 from another perspective;

FIG. 3 is a schematic view of the structure of FIG. 1 from yet another perspective;

FIG. 4 is a schematic view of the structure of FIG. 3 from another perspective;

FIG. 5 is an exploded view of an electric motor assembly according to an embodiment of the present application;

FIG. 6 is a schematic view of the structure of FIG. 5 from another perspective;

fig. 7 is a sectional view taken along a-a direction in fig. 4, in which an internal structure of the outer rotor motor is omitted;

fig. 8 is a partial structural view of an indoor unit of an air conditioner according to an embodiment of the present application, in which dotted lines and arrows indicate a condensed water flow path;

fig. 9 is an enlarged partial schematic view at B in fig. 8, in which broken lines and arrows indicate condensed water flow paths;

fig. 10 is a schematic view of the structure shown in fig. 8 from another perspective.

Description of the reference numerals

A motor assembly 1; an outer rotor motor 11; a power section 111; an outer rotor 1111; the second support flange 11111; a stator 1112; the third support flange 11121; the connecting projection 11122; a power take-off shaft 112; a wire body 113; a mounting case 12; a first case 121; an end plate 1211; a skirt 1212; a connecting sheet 12121; a card slot 121 a; inlet subslot 121 a'; lock tab slot 121a "; the first notch 121 b; a recessed region 121 c; a through hole 121 d; a second shell 122; a constricted cylindrical portion 1221; a buckle 1222; a boss 1223; the second notch 122 a; a step surface 122 b; a first support flange 123; a first bearing 13; a second bearing 14; a damping sleeve 15; a cylindrical portion 151; an annular ledge 152; a positioning boss 153; a chassis 2; a volute casing 21; a motor mounting groove 2 a; a first water guiding sub-channel 201 a; a second water guiding sub-channel 201 b; a third water guiding sub-channel 201 c; a fourth water guiding sub-channel 201 d; a water containing tank 202; the drain hole 202a

Detailed Description

It should be noted that, in the present application, technical features in examples and embodiments may be combined with each other without conflict, and the detailed description in the specific embodiment should be understood as an explanation of the gist of the present application and should not be construed as an improper limitation to the present application.

In the description of the embodiments of the present application, the "axial direction", "first side", "second side", orientation or positional relationship is based on the orientation or positional relationship shown in fig. 7. The terms "front", "rear", "left" and "right" in the embodiment of the present application are based on the orientation or positional relationship shown in fig. 8. It is to be understood that such directional terms are merely for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present application.

Referring to fig. 5 and 6, the motor assembly 1 includes an outer rotor motor 11 and a mounting case 12.

Referring to fig. 5, the external rotor motor 11 includes a power portion 111 and a power output shaft 112. Referring to fig. 6, the power unit 111 includes an outer rotor 1111 and a stator 1112 disposed in the outer rotor 1111. The power output shaft 112 is connected with the outer rotor 1111, and the outer rotor 1111 drives the power output shaft 112 to rotate synchronously. It should be noted that the external rotor motor 11 outputs torque through the power output shaft 112, that is, the external rotor motor 11 drives other structures to rotate through the power output shaft 112.

The specific structure of the interior of the outer rotor motor 11 in the embodiment of the present application is not limited, and the outer rotor motor 11 can realize complete motor functions.

The mounting shell 12 is fixedly connected with the stator 1112, and the power portion 111 is disposed in the mounting shell 12, that is, the mounting shell 12 surrounds the outer rotor 1111 and the stator 1112, so that on one hand, the motor assembly 1 is convenient to mount, on the other hand, the outer rotor 1111 is protected, other parts are prevented from being scraped and rubbed to the outer rotor 1111, and the rotation reliability of the outer rotor 1111 is ensured. Referring to fig. 1, fig. 2, fig. 3 and fig. 7, at least one end of the power output shaft 112 penetrates through the mounting shell 12, the mounting shell 12 is provided with first supporting flanges 123 at two opposite ends along the axial direction of the outer rotor motor 11, and the motor assembly 1 is supported at a position to be mounted through each first supporting flange 123, that is, all the first supporting flanges 123 bear the weight of the motor assembly 1 together.

It should be noted that the position to be installed refers to a target position where the motor assembly 1 needs to be installed.

It can be understood that the inner rotor motor is supported in an axial double-point support mode, and two axially opposite sides of the inner rotor motor are supported at the position to be installed. Since the outer rotor motor 11 has advantages of small volume, large output torque, high output power, etc., even if the mounting case 12 is provided outside the outer rotor motor 11, the overall size of the motor assembly 1 can be made equal to or smaller than that of the inner rotor motor.

In the embodiment of the present application, when the motor assembly 1 needs to be installed, the two first supporting flanges 123 are supported at the positions to be installed, and the first supporting flanges 123 are positioned by other parts such as the pressing plate, so as to realize the axial double-point support of the motor assembly 1, and avoid the motor assembly 1 to be in a single-point cantilever support form. That is to say, the installation mode of the motor assembly 1 of the embodiment of the present application is the same as that of the inner rotor motor, and both the motor assembly 1 and the inner rotor motor are axially supported in two points, so that the inner rotor motor in the prior art can be directly replaced by the motor assembly 1 of the embodiment of the present application without changing the structure of other parts, so that the interchangeable installation with the inner rotor motor can be realized, the interchangeability is good, and the application range of the motor assembly 1 is widened.

Because the cost of the outer rotor motor 11 is relatively low, and the motor assembly 1 of the embodiment of the present application can also be interchangeably installed with the inner rotor motor, when the motor assembly 1 is assembled to other devices, the update iteration of the devices can be realized on the basis of reducing the manufacturing cost of the devices.

The power unit 111 may be of an existing structure, that is, a commercially available outer rotor motor may be purchased.

The power output shaft 112 may extend from one axial end of the power section 111, or may extend from opposite axial ends of the power section 111. In the embodiment of the present application, the power output shaft 112 is described as extending from one axial end of the power section 111.

In some embodiments, the power output shaft 112 is disposed in a substantially horizontal direction, that is, the motor assembly 1 of the embodiment of the present application is disposed in a substantially horizontal direction during normal use. It will be appreciated that the power take-off shaft 112 may also be angled from horizontal, for example, within plus or minus 10 degrees of horizontal.

The specific configuration of the first support flange 123 is not limited as long as it is convenient for supporting at the position to be installed. Illustratively, in one embodiment, the first support flange 123 is cylindrical.

The position of the first support flange 123 with respect to the axis of the power output shaft 112 is not limited, and the center line of each first support flange 123 may coincide with or be parallel to the axis of the power output shaft 112. Specifically, in the embodiment of the present application, the center line of the first support flange 123 coincides with the axis of the power output shaft 112, so that an eccentric moment generated by the power output shaft 112 on the first support flange 123 during rotation can be avoided, and a stress condition at a connection position of the first support flange 123 and a position to be mounted is improved.

The mounting case 12 should adopt a closed structure as much as possible under the condition of satisfying the heat dissipation of the outer rotor motor 11, so as to achieve the waterproof and dustproof effects, and prevent impurities from entering the mounting case 12 and interfering the rotation of the outer rotor 1111.

In order to facilitate heat dissipation of the outer rotor motor 11, heat dissipation holes may be formed in the lower end of the mounting case 12, and the upper end portion of the mounting case 12 serves as a waterproof and dustproof surface, so that external water drops, dust and the like do not fall into the mounting case 12. The number and shape of the heat dissipation holes are not limited, as long as the heat dissipation of the outer rotor motor 11 is facilitated, and the structural strength of the mounting case 12 can meet the requirements.

In one embodiment, an axial first end of the power unit 111 is fixedly connected to the mounting case 12 through the stator 1112, and an axial second end of the power unit 111 is rotatably supported on the mounting case 12 through the outer rotor 1111. Specifically, referring to fig. 5 and 6, a second supporting flange 11111 is disposed on an axial side of the outer rotor 1111 facing away from the stator 1112, and referring to fig. 7, an axial second end of the power portion 111 is rotatably supported in the mounting shell 12 through the second supporting flange 11111. In this embodiment, the mounting shell 12 supports the power portion 111 along two opposite axial sides to improve the stress condition of the power portion 111, and prevent the power portion 111 from being supported by a cantilever, so as to improve the rotational stability of the outer rotor 1111.

In one embodiment, referring to fig. 7, one of the first support flanges 123 is hollow, and the second support flange 11111 is rotatably supported in the corresponding first support flange 123. That is, the second support flange 11111 extends into the first support flange 123, and the first support flange 123 supports the second support flange 11111. Thus, the inner space of the first support flange 123 can be fully utilized to accommodate the first support flange 123, and the volume of the mounting case 12 can be reduced, so that the motor assembly 1 is compact in structure.

In order to reduce the frictional resistance of the second supporting flange 11111 during the rotation process, in an embodiment, referring to fig. 6 and 7, the motor assembly 1 includes a first bearing 13, the first bearing 13 is sleeved on the second supporting flange 11111, and the first bearing 13 is disposed between the first supporting flange 123 and the second supporting flange 11111. The first bearing 13 can achieve both reliable support of the second support flange 11111 and effective reduction of the frictional resistance of the second support flange 11111.

The specific type of the first bearing 13 is not limited as long as the relative rotation between the second support flange 11111 and the first support flange 123 can be achieved. It will be appreciated that the first bearing 13 should be as small in size as possible to fit in the small space within the first support flange 123.

In one embodiment, the outer rotor 1111 has an accommodating space, which is open along a first side in the axial direction of the power unit 111, and the stator 1112 is disposed in the accommodating space. That is, an axial first side of the stator 1112 is exposed to the outside, so that the stator 1112 is fixedly connected with the mounting shell 12, and a circumferential and axial second side of the stator 1112 are surrounded by the outer rotor 1111.

An axial first-side end surface of stator 1112 may be entirely located in outer rotor 1111, that is, the axial first-side end surface of stator 1112 does not extend beyond the end surface of outer rotor 1111. Of course, the end surface of the stator 1112 on the axial first side may also protrude from the end surface of the outer rotor 1111, so as to facilitate the fixed connection with the mounting shell 12.

The fixed connection of the stator 1112 to the mounting housing 12 is not limited, and includes, but is not limited to: welding, screwing, riveting, etc.

Illustratively, in an embodiment, a plurality of connecting protrusions 11122 are formed on a first axial side of the stator 1112, the connecting protrusions 11122 are provided with screw holes, and screws are inserted through an end surface of the mounting shell 12 along the axial direction of the power portion 111 and screwed into the screw holes, so that the stator 1112 and the mounting shell 12 can be fixedly connected.

In one embodiment, referring to fig. 6, a third supporting flange 11121 is formed on one side of the stator 1112 for connecting with the mounting shell 12, and referring to fig. 7, the power output shaft 112 passes through the third supporting flange 11121, the inner portion of a corresponding first supporting flange 123 on the left side in fig. 6 is hollow, and the third supporting flange 11121 extends into the corresponding first supporting flange 123. The first support flange 123 supports the third support flange 11121, and can reduce a shearing force borne by a screw at a connection position of the stator 1112 and the mounting shell 12, thereby improving the connection reliability of the stator 1112 and the mounting shell 12.

Since there is no relative movement between the third support flange 11121 and the first support flange 123, and the first support flange 123 only needs to support the third support flange 11121, in one embodiment, the first support flange 123 and the third support flange 11121 may be interference fit to prevent the first support flange 123 from moving within the third support flange 11121.

In one embodiment, referring to fig. 7, the third supporting flange 11121 is hollow, the motor assembly 1 includes the second bearing 14 accommodated in the third supporting flange 11121, and the second bearing 14 is sleeved on the power output shaft 112. The second bearing 14 can perform a better rotation supporting function on the power output shaft 112 to improve the stress condition of the power output shaft 112, and on the other hand, can fully utilize the space in the third supporting flange 11121 to make the motor assembly 1 compact.

It should be noted that the plurality of connecting protrusions 11122 are disposed around the third supporting flange 11121, so that the stress applied to the connecting portion between the mounting shell 12 and the plurality of connecting protrusions 11122 is relatively uniform.

In one embodiment, the first case 121 is formed with a recessed area 121c, and the positions of the mounting case 12 for coupling with the coupling protrusion 11122 are all located at the recessed area 121 c. The recessed region 121c can reduce the distance between the mounting case 12 and the connecting projection 11122 in the axial direction, and improve the connection reliability of the mounting case 12 and the connecting projection 11122.

The specific structural form of the mounting shell 12 is not limited as long as it can provide a better supporting function for the outer rotor motor 11.

For example, in an embodiment, referring to fig. 5 and 6, the mounting shell 12 includes a first shell 121 and a second shell 122 that are axially butted along the outer rotor motor 11, the power unit 111 is located in a space enclosed by the first shell 121 and the second shell 122, one of the first supporting flanges 123 is disposed on the first shell 121, and the other first supporting flange 123 is disposed on the second shell 122. During assembly, the first shell 121 and the second shell 122 only need to be butted along the axial direction from the two opposite ends of the power part 111, and the assembly is convenient.

In order to enhance the structural strength of the first case 121, the entirety of the first case 121 and a corresponding one of the first support flanges 123 may be an integrally formed structure, which facilitates manufacturing, reduces the number of parts, and facilitates assembly.

The material of the first case 121 is not limited as long as structural strength can be satisfied. Exemplarily, in an embodiment, the first shell 121 and the first support flange 123 are a sheet metal part integrated, so that the structural strength of the joint of the first shell 121 and the stator 1112 can be ensured, and heat dissipation of the outer rotor motor 11 can be facilitated. Specifically, the first shell 121 is made of sheet metal, heat generated by the outer rotor motor 11 is transferred to the first shell 121, and the first shell 121 can radiate heat outwards by virtue of the heat conduction performance of the first shell 121, so that a heat dissipation effect is achieved. The first flange is

Similarly, the second shell 122 and the corresponding first supporting flange 123 may be integrally formed, which is convenient for manufacturing, reducing the number of parts and components, and facilitating assembly.

The material of the second shell 122 is not limited. Illustratively, in one embodiment, the second housing 122 is a plastic piece. On the one hand, the second shell 122 made of plastic material can reduce the total weight of the motor assembly 1, so that the motor assembly 1 is light-weight, and on the other hand, the production and manufacturing are facilitated, so that the production cost is reduced.

In an embodiment, referring to fig. 1 to 3, one of the first casing 121 and the second casing 122 is provided with a buckle 1222, and the other is provided with a slot 121a, and the buckle 1222 is in snap fit with the slot 121 a. The snap-fit of the buckle 1222 and the card slot 121a can realize the quick assembly of the first case 121 and the second case 122, and improve the assembly efficiency.

The specific structure of the buckle 1222 and the card slot 121a is not limited as long as quick fastening can be achieved.

For example, in an embodiment, the latch 1222 is an elastic hook, and when the elastic hook is assembled, the elastic hook is forced to elastically deform during the process of being inserted into the slot 121a, and after the elastic hook is inserted into the slot 121a, the elastic hook at least partially recovers the elastic deformation under the action of its own elastic force, so as to be reliably inserted into the slot 121 a. In this embodiment, the cooperation of the elastic hook and the slot 121a can realize the axial and circumferential positioning of the mounting shell 12, and no other fastening measures can be provided.

In another embodiment, in an embodiment where the first shell 121 is a sheet metal part and the second shell 122 is a plastic part, the locking groove 121a is disposed on the first shell 121, specifically, the locking groove 121a includes an inlet sub-groove 121a 'and a locking sub-groove 121a ″ that are communicated, the inlet sub-groove 121 a' extends along an axial direction of the first shell 121, the locking sub-groove 121a ″ extends from a tip of the inlet sub-groove 121a 'along a circumferential direction of the first shell 121, the latch 1222 is a protrusion protruding from a circumferential surface of the second shell 122, and the latch 1222 can enter the locking sub-groove 121a ″ from the inlet sub-groove 121 a'; the first case 121 and the second case 122 are fixedly coupled by at least one screw.

During assembly, the first and second housings 121, 122 are brought together in abutting relation, the tabs 1222 are aligned with the inlet sub-slots 121a ', the tabs 1222 are pushed into the inlet sub-slots 121 a', and then the first or second housing 121, 122 is rotated to rotate the tabs 1222 into the locking sub-slots 121a ". The engagement of the catch 1222 and the latch sub-groove 121a ″ enables axial positioning of the first and second housings 121 and 122, preventing the first and second housings 121 and 122 from being axially disengaged. After that, the first case 121 and the second case 122 are fastened by screws. The screws serve to prevent the first casing 121 and the second casing 122 from moving relative to each other in the circumferential direction, and since the first casing 121 and the second casing 122 do not move relative to each other during the operation of the outer rotor motor 11, the acting force applied to the screws and the latches 1222 is relatively small. Under the cooperation of buckle 1222 and draw-in groove 121a, can only set up a screw can. Therefore, in this embodiment, the engagement between the latch 1222 and the slot 121a can greatly improve the assembling efficiency, and the screw connection can be considered for the assembling reliability.

In addition, because first shell 121 is the sheet metal component, even set up draw-in groove 121a on first shell 121, also can make the structural strength of sheet metal component satisfy the requirement. The latch 1222 may be integrally formed on the second housing 122 to meet structural strength requirements and facilitate processing.

The number of the snaps 1222 may be plural, the plural snaps 1222 are uniformly arranged along the circumference of the second case 122, and the card slots 121a are fitted with the snaps 1222 one by one. Illustratively, in the embodiment of the present application, the number of the snaps 1222 is three, and the three snaps 1222 are uniformly arranged along the circumference of the second case 122.

In order to facilitate the screw connection of the first casing 121 and the second casing 122, in one embodiment, referring to fig. 2 and 6, the first casing 121 is provided with a connection sheet 12121 extending outward in a radial direction, the connection sheet 12121 is provided with a through hole 121d, the outer surface of the second casing 122 is provided with a boss 1223, and a screw passes through the through hole 121d and is screwed into the boss 1223.

It will be appreciated that self-tapping screws may be used to tap directly on the post 1223 at the assembly site. Of course, a threaded hole matched with the screw can be machined in the convex column 1223 in advance.

In the embodiment that first shell 121 is the sheet metal component, second shell 122 is the working of plastics, because the sheet metal component has better structural strength, consequently, the structural strength of connection piece 12121 can satisfy the intensity requirement of screw connection, and projection 1223 has longer length relatively, can satisfy the intensity requirement of screw connection, in addition, can also play the effect of strengthening rib.

In an embodiment, referring to fig. 5 and fig. 6, the first shell 121 is provided with a first notch 121b, the first notch 121b penetrates through an edge of the first shell 121 for being abutted with the second shell 122, the second shell 122 is provided with a second notch 122a, the second notch 122a penetrates through an edge of the second shell 122 for being abutted with the first shell 121, the first notch 121b and the second notch 122a together enclose a wire passing groove, and the wire 113 of the outer rotor motor 11 passes through the wire passing groove. Specifically, during the assembly process, the first shell 121 and the second shell 122 are butted, and the wire body 113 of the outer rotor motor 11 is clamped in the wire passing groove, so that the wire body 113 does not need to be arranged in a penetrating manner, the assembly time is saved, and the assembly efficiency is improved.

In one embodiment, referring to fig. 6, one end of the second shell 122 close to the first shell 121 is shrunk inwards to form a shrunk cylinder 1221, and an annular step surface 122b is formed at the boundary between the shrunk cylinder 1221 and the non-shrunk cylinder. The shrinkage cylinder portion 1221 extends into the first shell 121, and an end face of the first shell 121 abuts against the step face 122b, that is, a part of the first shell 121 and the second shell 122 forms a nested assembly, so that on one hand, a contact area of the first shell 121 and the second shell 122 is increased, the shrinkage cylinder portion 1221 also has a positioning effect on the first shell 121 in the radial direction and the axial direction, connection reliability of the first shell 121 and the second shell 122 is improved, on the other hand, the circumferential direction of the first shell 121 and the circumferential direction of the second shell 122 are flush with each other on an appearance face, and the appearance of the motor assembly 1 is neat and attractive.

In one embodiment, referring to fig. 5, the first shell 121 includes an end plate 1211 and a skirt 1212 extending from a periphery of the end plate 1211 toward a side of the second shell 122, the end plate 1211 is substantially circular in shape, and the skirt 1212 is substantially cylindrical and surrounds an edge of the end plate 1211. The locking groove 121a, the connecting piece 12121 and the first notch 121b are disposed on the skirt 1212. It should be noted that, under the condition that the requirement for arranging the clamping groove 121a, the connecting piece 12121 and the first notch 121b is met, the length of the apron 1212 along the axial direction can be reduced as much as possible, so as to reduce the difficulty in manufacturing the sheet metal part.

In one embodiment, referring to fig. 5 and 6, the motor assembly 1 includes a plurality of damping sleeves 15, and the damping sleeves 15 are sleeved on the first supporting flange 123. After the motor assembly 1 is installed at the position to be installed, the damping sleeve 15 is spaced between the first supporting flange 123 and the position to be installed to form a damping support for the motor assembly 1, that is, the first supporting flange 123 does not directly contact the position to be installed. When the outer rotor motor 11 works, the electromagnetic excitation force is transmitted to the first supporting flange 123, and due to the vibration isolation effect of the vibration damping sleeve 15, the electromagnetic excitation force is not transmitted to the position to be installed by the first supporting flange 123, and is absorbed by the vibration damping sleeve 15 to a great extent, so that the electromagnetic excitation force transmitted to the position to be installed is greatly reduced, forced vibration of structures around the position to be installed can be effectively inhibited, and outward radiation noise is inhibited.

The material of the damping sleeve 15 is not limited as long as it can achieve a good damping effect, and exemplarily includes but is not limited to rubber, silica gel, resin, fiber, and the like.

In one embodiment, referring to fig. 5 and 6, the damping sleeve 15 near the power output shaft 112 includes a cylindrical portion 151 and an annular flange 152 protruding from a circumferential surface of the cylindrical portion 151, and the first casing 121 is formed with a recessed area 121c, specifically, a portion of the end plate 1211 is recessed inward to form the recessed area 121 c. The recessed region 121c surrounds the first support flange 123.

The annular protruding eaves 152 are located in the recessed area 121c, and an end surface of the annular protruding eaves 152 along the axial first side protrudes from an end surface of the first shell 121 along the axial first side. The annular overhang 152 has a contour shape that fits the edge of the recessed region 121c, for example, is substantially circular, and the circumferential surface of the annular overhang 152 contacts the wall surface at the corresponding edge of the recessed region 121 c. Annular eaves 152 and recessed area 121 c's cooperation, the damping cover 15 protrusion in the convex degree of first shell 121 that corresponds can be reduced on the one hand, on the other hand, at outer rotor motor 11 working process, can avoid there being the vibration, adopt modes such as clamp plate to press damping cover 15 when treating mounted position department, axial one side of clamp plate can contact with annular eaves 152, avoid clamp plate and first shell 121 to contact, thereby avoid producing the frictional noise between clamp plate and the first shell 121.

In one embodiment, with continued reference to fig. 5 and 6, the damping sleeve 15 on the side away from the power output shaft 112 is provided with a positioning boss 153. When the motor assembly 1 is placed at the position to be installed, the positioning can be achieved through the positioning boss 153, for example, the positioning boss 153 abuts against the top surface of the supporting surface of the position to be installed, so that the motor assembly 1 can be quickly placed in place without adjusting the position for many times.

Referring to fig. 9 and 10, an air conditioner indoor unit according to an embodiment of the present application further includes a chassis 2, a cross flow wind wheel, a heat exchanger, and the motor assembly 1 according to any of the embodiments.

The base plate 2 is provided with a scroll casing 21 extending in the longitudinal direction of the base plate 2 and a motor mounting groove 2a at one end of the scroll casing 21, i.e., the scroll casing 21 extends in the left-right direction of the base plate 2. The motor assembly 1 is disposed in the motor mounting groove 2a and supported on the corresponding side plate of the motor mounting groove 2a by the two first supporting flanges 123.

The cross flow wind wheel is rotatably arranged in the volute 21. The motor assembly 1 is arranged on one axial side of the cross-flow wind wheel, and the power output shaft 112 extends into the volute 21 and is rotationally connected with the cross-flow wind wheel to drive the cross-flow wind wheel to rotate. The heat exchanger extends along the length direction of the chassis 2 and is connected with the chassis 2, specifically, the heat exchanger is approximately in an inverted V shape with an opening facing downwards, the heat exchanger is enclosed above an air inlet of the volute casing 21, and airflow after heat exchange of the heat exchanger enters the volute casing 21 under the action of the cross-flow wind wheel.

The air-conditioning indoor unit of the embodiment of the application can change the original motor assembly 1 of the embodiment of the application with the original inner rotor motor on the basis of the original air-conditioning indoor unit without changing the original structural design of the chassis 2 and related parts, namely, the product can be updated on the basis of not changing the manufacturing die of the existing air-conditioning indoor unit, and the production cost of the product updating is reduced. In addition, a user is sensitive to noise of the air-conditioning indoor unit, the noise becomes one of performance indexes of the air-conditioning indoor unit, and the motor assembly 1 of the embodiment of the application adopts the outer rotor motor 11, so that large torque can be output, the noise is low, the cost is low, the noise of the air-conditioning indoor unit can be effectively reduced, and the user experience is improved.

It should be noted that the motor mounting groove 2a is located outside the volute casing 21 and isolated from the air duct in the volute casing 21, that is, neither the mounting casing 12 nor the power portion 111 of the outer rotor motor 11 extends into the volute casing 21.

The air-conditioning indoor unit comprises a face frame assembly and an electric control box, wherein the electric control box is arranged on the chassis 2 and is positioned on the first axial side of the volute casing 21, namely the electric control box and the motor installation groove 2a are positioned on the same side of the volute casing 21, the periphery of the face frame assembly is in butt joint with the chassis, and the heat exchanger and the electric control box are arranged in a space defined by the face frame assembly and the chassis together. It should be noted that an avoidance notch for avoiding a display area of the electronic control box is reserved on the front surface of the face frame assembly.

In one embodiment, referring to fig. 8 and 9, the base plate 2 has a water guiding channel for receiving the condensed water generated by the heat exchanger and a water receiving tank 202 communicated with the water guiding channel, and the water guiding channel surrounds the volute 21. The water receiving tank 202 communicates with the lowest position of the water guide passage so that the condensed water in the water guide passage can be collected into the water receiving tank 202. The water tank 202 is provided with a drain hole 202a, and water flowing out of the drain hole 202a can be collected in one drain pipe and drained.

In the embodiment of the present application, the number of the water containing grooves 202 is two, and one water containing groove 202 is respectively disposed on the left front side and the right front side of the scroll casing 21.

The water guide channel includes a first water guide sub-channel 201a, a second water guide sub-channel 201b, a third water guide sub-channel 201c and a fourth water guide sub-channel 201d, wherein the first water guide sub-channel 201a is located at the rear side of the volute casing 21 and extends along the length direction of the chassis 2, the first water guide sub-channel 201a is located at the front side of the volute casing 21 and extends along the length direction of the chassis 2, the third water guide sub-channel 201c is located at the second axial side of the volute casing 21 and extends along the front-back direction of the chassis 2, the third water guide sub-channel 201c is located at the first axial side of the volute casing 21 and extends along the front-back direction of the chassis 2, and the water containing groove 202 is located at the extending end of the second water guide sub-channel 201b, that is, the left side and the right side of the second water guide sub-channel 201b are both provided with water containing grooves 202.

Specifically, the condensed water generated at the front end of the heat exchanger falls into the first water guide sub-channel 201a, the condensed water generated at the rear end of the heat exchanger falls into the second water guide sub-channel 201b, the condensed water generated at the left end of the heat exchanger falls into the third water guide sub-channel 201c, and the condensed water generated at the right end of the heat exchanger falls into the fourth water guide sub-channel 201 d.

The third water guiding sub-passage 201c communicates with the second water guiding sub-passage 201b and one of the water containing tanks 202, and the fourth water guiding sub-passage 201d communicates with the second water guiding sub-passage 201b and the other water containing tank 202. Specifically, the height of the second water guiding sub-channel 201b is higher than that of the water containing tank 202, and the condensed water in the second water guiding sub-channel 201b flows into the corresponding water containing tank 202 through the third water guiding sub-channel 201c and the fourth water guiding sub-channel 201 d. The water flow in the first water guiding sub-passage 201a also flows into the water containing groove 202.

Specifically, referring to fig. 9, a side plate 2a 'of the motor mounting groove 2a near the side of the volute casing 21 and a side wall 21' of the volute casing 21 are spaced apart from each other to form the fourth water guiding sub-channel 201d, i.e., a space between the side plate 2a 'of the motor mounting groove 2a near the side of the volute casing 21 and the side wall 21' of the volute casing 21 serves as a part of the water guiding channel.

The embodiment of the application also provides an air conditioner, which comprises an air conditioner outdoor unit and the air conditioner indoor unit of any one of the embodiments, wherein the air conditioner outdoor unit is connected with the air conditioner indoor unit through a refrigerant pipe.

The various embodiments/implementations provided herein may be combined with each other without contradiction.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (15)

1. An electric machine assembly, comprising:

the outer rotor motor (11), the outer rotor motor (11) comprises a power part (111) and a power output shaft (112), the power part (111) comprises an outer rotor (1111) and a stator (1112) arranged in the outer rotor (1111), and the power output shaft (112) is connected with the outer rotor (1111);

with stator (1112) fixed connection's installation shell (12), power portion (111) set up in installation shell (12), at least one end of power output shaft (112) is worn out installation shell (12), installation shell (12) are followed power output shaft (112) axial both ends relatively all are provided with first supporting flange (123), motor assembly passes through each first supporting flange (123) support in waiting to install the position.

2. An electric motor assembly, according to claim 1, characterized in that the first axial end of the power section (111) is fixedly connected to the mounting housing (12) through the stator (1112), and the second axial end of the power section (111) is rotatably supported on the mounting housing (12) through the outer rotor (1111).

3. An electric machine assembly according to claim 2, characterised in that the axial side of the outer rotor (1111) facing away from the stator (1112) is provided with a second support flange (11111), wherein one of the first support flanges (123) is hollow on the inside, the second support flange (11111) protruding into the first support flange (123).

4. The motor assembly according to claim 3, wherein the motor assembly comprises a first bearing (13), the first bearing (13) is sleeved on the second support flange (11111), and the first bearing (13) is arranged between the first support flange (123) and the second support flange (11111).

5. An electric machine assembly according to claim 1, characterised in that the stator (1112) is formed with a third support flange (11121) on the side for connection to the mounting housing (12), the power take-off shaft (112) passing through the third support flange (11121), the third support flange (11121) projecting into the corresponding first support flange (123).

6. The motor assembly according to claim 1, wherein the mounting shell (12) comprises a first shell (121) and a second shell (122) which are axially butted along the outer rotor motor (11), the power portion (111) is located in a space which is commonly enclosed by the first shell (121) and the second shell (122), one of the first support flanges (123) is arranged on the first shell (121), and the other one of the first support flanges (123) is arranged on the second shell (122).

7. The electric motor assembly according to claim 6, characterized in that one of the first and second housings (121, 122) is provided with a snap (1222), and the other is provided with a snap groove (121a), and the snap (1222) and the snap groove (121a) are snap-fitted.

8. The motor assembly according to claim 7, wherein the card slot (121a) is disposed on the first housing (121), the card slot (121a) comprises an inlet sub-slot (121a ') and a locking sub-slot (121a ") that are communicated, the inlet sub-slot (121 a') extends in an axial direction of the first housing (121), the locking sub-slot (121 a") extends from an end of the inlet sub-slot (121a ') in a circumferential direction of the first housing (121), the catch (1222) protrudes from a circumferential surface of the second housing (122), and the catch (1222) is capable of entering the locking sub-slot (121a ") from the inlet sub-slot (121 a'); the first case (121) and the second case (122) are fixedly connected by at least one screw.

9. An electric machine assembly according to claim 8, characterized in that the first housing (121) is provided with a connecting piece (12121) extending radially outwards, the connecting piece (12121) being provided with a through hole (121d), the outer surface of the second housing (122) being provided with a stud (1223), through which a screw is passed and screwed into the stud (1223).

10. The motor assembly according to claim 6, wherein the first shell (121) is provided with a first notch (121b), the first notch (121b) penetrates through an edge of the first shell (121) for interfacing with the second shell (122), the second shell (122) is provided with a second notch (122a), the second notch (122a) penetrates through an edge of the second shell (122) for interfacing with the first shell (121), the first notch (121b) and the second notch (122a) together form a wire passing groove, and the wire body (113) of the outer rotor motor (11) passes through the wire passing groove.

11. The electric machine assembly according to claim 1, characterized in that it comprises a damping sleeve (15), said damping sleeve (15) being fitted over said first support flange (123).

12. An indoor unit of an air conditioner, comprising:

a chassis (2) configured with a volute (21) extending in a length direction of the chassis (2) and a motor mounting groove (2a) at one end of the volute (21);

the cross-flow wind wheel is rotationally arranged in the volute (21);

the heat exchanger is connected to the base plate (2), the heat exchanger extends along the length direction of the base plate (2), and airflow subjected to heat exchange through the heat exchanger enters the volute (21) under the action of the cross-flow wind wheel;

the motor assembly of any one of claims 1 to 11, which is disposed in the motor mounting groove (2a) and supported on the corresponding side plate of the motor mounting groove (2a) through two first supporting flanges (123), wherein the power output shaft (112) extends into the volute (21) and is rotationally connected with the cross-flow wind wheel to drive the cross-flow wind wheel to rotate.

13. The indoor unit of air conditioner as claimed in claim 12, wherein the chassis (2) has a water guide channel for receiving the condensed water of the heat exchanger and a water receiving tank (202) communicated with the water guide channel, the water guide channel surrounds the volute (21), and the condensed water in the water guide channel can be collected into the corresponding water receiving tank (202).

14. The indoor unit of claim 13, wherein a side plate (2a ') of the motor mounting groove (2a) adjacent to one side of the scroll case (21) is spaced apart from a side wall (21') of the scroll case (21) to form a part of the water guide passage.

15. An air conditioner comprising an outdoor unit and the indoor unit of any one of claims 12 to 14, wherein the outdoor unit and the indoor unit are connected by refrigerant pipes.

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