CN112361457A

CN112361457A - Machine and air conditioner in air conditioning

Info

Publication number: CN112361457A
Application number: CN202011384140.5A
Authority: CN
Inventors: 雍文涛; 李洪涛; 周宏明
Original assignee: GD Midea Air Conditioning Equipment Co Ltd
Current assignee: GD Midea Air Conditioning Equipment Co Ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-02-12

Abstract

The embodiment of the application provides an air conditioner indoor unit and an air conditioner, and the air conditioner indoor unit comprises a chassis, a cross flow wind wheel and a motor assembly, wherein the chassis is provided with a volute; the cross-flow wind wheel is rotationally arranged in the volute; the motor assembly comprises an outer rotor motor and a mounting seat, the outer rotor motor is located in the air duct and comprises a power output shaft, an outer rotor and a stator, the power output shaft is connected with the cross-flow wind wheel to drive the cross-flow wind wheel to rotate, the mounting seat is connected with the stator and located on one side, away from the cross-flow wind wheel, of the outer rotor motor, and the outer rotor motor is mounted on the volute through the mounting seat. According to the air conditioner indoor unit, the outer rotor motor is arranged in the air duct, so that the motor installation space in the prior art can be saved, and the width of the whole air conditioner indoor unit is obviously reduced; the heat generated by the outer rotor motor is taken out of the volute by the airflow, so that a better heat dissipation effect is achieved on the outer rotor motor, heat dissipation holes do not need to be formed in other surrounding structures, and the overall structural strength of the indoor unit of the air conditioner is improved.

Description

Machine and air conditioner in air conditioning

Technical Field

The application relates to the technical field of air exchange, in particular to an air conditioner indoor unit and an air conditioner.

Background

Taking a wall-mounted air conditioner as an example, please refer to fig. 1, the inner rotor motor 1 'is arranged at one axial end outside the volute 2', and adopts an installation form with two fixed ends, the whole occupied space of the inner rotor motor 1 'and the installation structure thereof is larger, in addition, in order to meet the heat dissipation requirement of the inner rotor motor 1', the heat dissipation holes are specially arranged at the part of the chassis where the inner rotor motor is installed, and the heat dissipation holes can lead to the reduction of the whole structure strength of the chassis of the air conditioner, and the heat dissipation effect is not good.

Disclosure of Invention

In view of this, it is desirable to provide an air conditioner indoor unit and an air conditioner with good heat dissipation performance and a compact structure.

In order to achieve the above object, an embodiment of the present application provides an indoor unit of an air conditioner, including a chassis, a cross flow wind wheel, and a motor assembly, where the chassis is configured with the volute; the cross flow wind wheel is rotationally arranged in the air channel of the volute; the motor assembly comprises an outer rotor motor and a mounting seat, the outer rotor motor is located in the air duct and comprises a power output shaft, an outer rotor and a stator, the power output shaft is connected with the cross-flow wind wheel to drive the cross-flow wind wheel to rotate, the mounting seat is connected with the stator and located on one side, away from the cross-flow wind wheel, of the outer rotor motor, and the outer rotor motor is supported on the volute through the mounting seat.

In some embodiments, the mounting seat includes a support column extending in an axial direction of the power output shaft, and the mounting seat is supported by the support column on a side wall of the volute on one side in the axial direction of the cross-flow wind wheel.

In some embodiments, the centerline of the support column is collinear with the axis of the power take-off shaft.

In some embodiments, a wiring channel for passing a cable of the outer rotor motor is arranged inside the mounting seat, and the wiring channel penetrates from one side of the mounting seat close to the cross-flow wind wheel to one side of the mounting seat away from the cross-flow wind wheel.

In some embodiments, the mounting seat includes a damping sleeve and a blocking cover, the circumferential surface of the support cylinder is provided with a blocking surface, the damping sleeve is sleeved on the support cylinder, the blocking cover is connected with one end of the support cylinder far away from the external rotor motor, and the damping sleeve is clamped between the blocking surface and the blocking cover along the axial direction of the support cylinder.

In some embodiments, the fender lid includes baffle and protrusion in the baffle is towards the frustum of damping cover one side, the frustum is close to the external diameter of the one end of baffle is greater than keeps away from the external diameter of baffle one end, the support cylinder orientation the tip of the one end of fender lid is provided with the holding tank, the frustum stretches into in the holding tank.

In some embodiments, the maximum outer diameter of the frustum is greater than the inner diameter of the damping sleeve; and/or the presence of a gas in the gas,

the supporting column body is provided with a baffle plate, the baffle plate is provided with a cone table, one end of the supporting column body close to the baffle cover is a blind end, a first connecting hole penetrating through the baffle plate and the cone table is formed in the middle area of the baffle cover, and a screw penetrates through the first connecting hole and is screwed into the supporting column body.

In some embodiments, the outer surface of the portion of the support column body for being sleeved with the damping sleeve is provided with a convex rib, and the convex rib is in interference fit with the damping sleeve.

In some embodiments, the support column includes a first sub-column and a second sub-column arranged along an axial direction, the first sub-column is connected to an end of the second sub-column facing away from the outer rotor motor, an outer diameter of the second sub-column is larger than an outer diameter of the first sub-column, so as to form the stop surface at a junction of the first sub-column and the second sub-column, and the damping sleeve is sleeved on the first sub-column.

In some embodiments, a first groove extending in the axial direction is formed in the outer surface of the first sub-column, a second groove extending in the axial direction is formed in the inner surface of the damping sleeve, the first groove and the second groove jointly enclose a wiring groove, the blocking cover is provided with a wire passing hole communicated with the wiring groove, and a cable of the outer rotor motor passes through the wiring groove and the wire passing hole.

In some embodiments, the damping sleeve includes a sleeve and annular flanges protruding from a circumferential surface of the sleeve, the annular flanges are disposed at axially opposite ends of the sleeve, and the sleeve and the annular flanges together define an annular groove; the mounting seat comprises a pressing plate, the pressing plate is clamped into the annular groove, and the opposite two ends of the pressing plate in the length direction are connected with the volute so as to press the supporting column body against the volute.

In some embodiments, the sidewall of the volute is formed with a notch that extends through a top surface of the sidewall of the volute, the sleeve snaps into the notch along a portion of the circumferential direction, and the sidewall of the volute snaps into the ring groove.

In some embodiments, the stator is exposed at a side of the outer rotor facing the mounting seat, the mounting seat includes an end disc disposed at a side of the support column facing the outer rotor motor, and the mounting seat is connected to the stator through the end disc.

In some embodiments, the stator has a shaft end surface facing the mounting seat, a plurality of connecting protrusions protruding from the shaft end surface, and a supporting flange protruding from the shaft end surface, the plurality of connecting protrusions are arranged at intervals along a circumferential direction of the supporting flange, an inner portion of the supporting cylinder near one end of the outer rotor motor is hollow, the supporting flange protrudes into the supporting cylinder, and the end disc is connected with the connecting protrusions.

In some embodiments, the end disc is provided with a plurality of second connecting holes, a first reinforcing ring rib, and a second reinforcing ring rib, a screw passes through the second connecting hole and is screwed into the connecting protrusion, each of the second connecting holes and the end portion of the support column are located in an area surrounded by the first reinforcing ring rib, the second reinforcing ring rib is surrounded around each of the second connecting holes, the second reinforcing ring rib is connected with the first reinforcing ring rib along the radial outer side of the end disc, and the second reinforcing ring rib is connected with the outer surface of the support column along the radial inner side of the end disc.

In some embodiments, the indoor unit of the air conditioner comprises a heat exchanger, an electric control box and a motor gland assembly for pressing the mounting seat against the chassis, the heat exchanger and the chassis are jointly enclosed and arranged at the air inlet, and airflow subjected to heat exchange by the heat exchanger can enter the air duct through the air inlet under the action of the cross-flow wind wheel; the motor gland assembly can contain condensed water generated by the heat exchanger and is arranged between the electric control box and the heat exchanger in a blocking mode.

In some embodiments, the indoor unit of the air conditioner comprises a liquid inlet pipeline and a gas collecting pipeline which are connected with the heat exchanger, an avoiding notch is arranged on the chassis, and the liquid inlet pipeline and the gas collecting pipeline are wound to the rear side of the chassis from the upper side of the electric control box through the avoiding notch.

In some embodiments, the top end of the motor gland extends towards one side of the electronic control box to form a boss structure, and the boss structure is located below the liquid inlet pipeline and above the electronic control box.

The minimum distance between the avoidance notch and the end face of the chassis along the length direction is smaller than the width of the avoidance notch.

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.

According to the air conditioner indoor unit, the outer rotor motor is arranged in the air duct, so that the outer rotor motor does not occupy extra installation space of the chassis along the length direction basically, the installation space of the motor in the prior art can be saved, the structure of the air conditioner indoor unit is more compact under the condition of not losing air volume, the width of the whole machine is reduced remarkably, the production cost can be reduced remarkably, the packaging size can be reduced, the transportation and the storage are facilitated, the installation space can be saved for users, the user experience is improved, and the product competitiveness is improved; in addition, in the rotation process of the cross-flow wind wheel, part of air flow flows through the outer rotor motor, and heat generated by the outer rotor motor is taken out of the volute by the air flow to play a good heat dissipation role on the outer rotor motor, so that heat dissipation holes do not need to be independently arranged on other surrounding structures, and the overall structural strength of the indoor unit of the air conditioner is improved; under the condition of outputting the same torque to the cross flow wind wheel, the size of the outer rotor motor is obviously smaller than that of the inner rotor motor, so that the size of the volute cannot be additionally increased even if the outer rotor motor is arranged in the volute, and the compact structure of the volute is guaranteed. Moreover, the mounting seat is positioned on one side of the outer rotor motor, which is far away from the cross-flow wind wheel, so that the mounting seat is designed into a structural form with higher rigidity, the structural strength and rigidity of the joint of the mounting seat and the volute are improved, and the mounting reliability of the outer rotor motor is improved.

Drawings

FIG. 1 is a simplified schematic diagram of a connection mode of a cross-flow wind wheel and a motor in an indoor unit of an air conditioner in the related art;

FIG. 2 is a simplified schematic diagram of a connection manner of a cross flow wind wheel and a motor assembly in an indoor unit of an air conditioner according to an embodiment of the present disclosure;

fig. 3 is a schematic partial structural view of an indoor unit of an air conditioner according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of FIG. 3 with the heat exchanger and the gland omitted;

FIG. 5 is a schematic view of the structure of FIG. 3 after assembly of the heat exchanger;

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

FIG. 7 is a schematic view of the structure shown in FIG. 6 with the chassis omitted and rotated at a certain angle;

FIG. 8 is a schematic structural diagram of a motor assembly according to an embodiment of the present disclosure, in which a pressing plate is omitted;

FIG. 9 is a schematic view of the structure of FIG. 8 from another perspective;

FIG. 10 is an exploded view of the structure shown in FIG. 8;

FIG. 11 is a schematic structural view of an end disk and support column according to an embodiment of the present application;

FIG. 12 is a schematic view from another perspective of the structure shown in FIG. 10;

fig. 13 is a schematic structural diagram of a motor gland assembly according to an embodiment of the present application;

fig. 14 is a schematic view of the structure shown in fig. 13 from another perspective.

The reference numbers illustrate the motor assembly 1; an outer rotor motor 11; a power take-off shaft 111; an outer rotor 112; a stator 113; the shaft end surface 113 a; the coupling projection 1131; a support flange 1132; a mounting base 12; a routing channel 12 a; a support column 121; a first sub-column 1211; a second sub-column 1212; the ribs 1213; a stop surface 121 b; the first groove 121 a; accommodating grooves 121 c; a damping sleeve 122; a sleeve 1221; an annular flange 1222; the second grooves 122 a; the ring grooves 122 b; a stopper cover 123; a frustum 1231; a baffle 1232; a wire passing hole 123 a; the first connection hole 123 b; an end disk 124; the second connection hole 124 a; a first reinforcing ring bead 1241; a second reinforcing ring bead 1242; a platen 125; an arcuate segment 1251; a connecting section 1252; a volute 2; an air duct 2 a; a chassis 3; avoiding the notch 3 a; a heat exchanger 4; a cross flow wind wheel 5; an electric control box 6; a motor gland assembly 7; a motor cover 71; a water guard plate 72; a boss structure 721; a flange 722; a liquid inlet line 81; gas collecting line 82

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 "up", "down", "axial" orientation or positional relationship is based on the orientation or positional relationship shown in fig. 4. In this case, "axial" in fig. 4 is the same as the orientation indicated by "axial" in fig. 9. 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.

An embodiment of the present application provides an air conditioning indoor unit, please refer to fig. 3 and 4, and the air conditioning indoor unit includes a chassis 3, a heat exchanger 4, an electric control box 6, a cross flow wind wheel 5, and a motor assembly 1.

The chassis 3 is provided with a volute 2, the volute 2 is provided with an air duct 2a, an air inlet and an air outlet, and the cross-flow wind wheel 5 is rotatably arranged in the air duct 2a of the volute 2. The air duct 2a extends a certain length along the axial direction of the cross flow wind wheel 5, and in the rotating process of the cross flow wind wheel 5, airflow enters the air duct 2a from the air inlet and then is discharged out of the volute 2 through the air outlet.

Referring to fig. 8, 9 and 10, the motor assembly 1 includes an external rotor motor 11 and a mounting base 12, and referring to fig. 2 and 4, the external rotor motor 11 is located in the air duct 2a, that is, the external rotor motor 11 is located on an air flow path in the air duct 2 a. The outer rotor motor 11 comprises a power output shaft 111, an outer rotor 112 and a stator 113, the power output shaft 111 is connected with the cross flow wind wheel 5 to drive the cross flow wind wheel 5 to rotate, the mounting seat 12 is connected with the stator 113 and is positioned on one side of the outer rotor motor 11 departing from the cross flow wind wheel 5, and the outer rotor motor 11 is supported on the volute 2 through the mounting seat 12. That is, the outer rotor motor 11 is suspended in the volute casing 2, that is, the outer rotor motor 11 is in a cantilever support form, that is, an axial single-point support form.

Referring to fig. 5, the heat exchanger 4 is covered above the air inlet, and the air flow after heat exchange by the heat exchanger 4 can enter the air duct 2a through the air inlet under the action of the cross flow wind wheel 5.

The heat exchanger 4 is used as a heat exchange medium, the heat exchanger 4 is used as a part of a heat pump system, when the air conditioning indoor unit needs to refrigerate, the heat exchanger 4 is an evaporator of the heat pump system, and when the air conditioning indoor unit needs to heat, the heat exchanger 4 is a condenser of the heat pump system. The electrical control box 6 is used for accommodating electronic components of the air conditioner indoor unit, such as a main control panel, a power supply, a control circuit, a wiring board and the like.

The user is sensitive to the noise of the air-conditioning indoor unit, and the noise becomes one of the performance indexes of the air-conditioning indoor unit. In the embodiment of the application, after the original inner rotor motor is replaced by the motor assembly 1 with the outer rotor motor 11, the noise can be obviously reduced, and the user experience is improved.

It should be noted that the outer rotor motor 11 in the embodiment of the present application can realize a complete motor function by itself. In the embodiment of the application, the outer rotor motor 11 is a plastic package motor, i.e., the stator core, the winding and the like are integrally packaged by adopting a plastic packaging technology, so that the traditional motor stator insulation treatment process and the metal casing of a common motor can be eliminated, and the plastic package motor has the advantages of small volume, low noise and the like.

In the air-conditioning indoor unit of the embodiment of the application, the outer rotor motor 11 is arranged in the air duct 2a, so that the outer rotor motor 11 basically does not occupy the installation space of the chassis 3 along the length direction, and the installation space of the motor in the prior art can be saved. Specifically, in the prior art, along the length direction of the indoor unit of the air conditioner, the heat exchanger, the motor and the electric control box are sequentially arranged from left to right, the motor is arranged between the heat exchanger and the electric control box, the electric control box is arranged adjacent to the motor, and the motor is arranged adjacent to the heat exchanger. In the embodiment of the application, automatically controlled box 6 is direct adjacent to heat exchanger 4 and sets up, that is to say, no interval motor between heat exchanger 4 and the automatically controlled box 6, therefore, under the condition that uses the same size cross-flow wind wheel 5, namely under the condition of not losing the amount of wind, the structure of the air conditioning indoor set of the embodiment of the application is compacter, the complete machine width is showing and is reducing, not only can show reduction in production cost, also can reduce the packing size, be convenient for transportation, deposit, can also save installation space for the user, promote user experience, promote product competitiveness.

In addition, in the rotating process of the cross-flow wind wheel 5, part of the airflow flows through the outer rotor motor 11, heat generated by the outer rotor motor 11 is taken out of the volute 2 by the airflow, and a good heat dissipation effect is achieved on the outer rotor motor 11, so that heat dissipation holes do not need to be formed in other surrounding structures, for example, holes do not need to be formed in the chassis 3, and the overall structural strength of the indoor unit of the air conditioner is improved. It should be noted that, the wall-mounted air conditioner indoor unit is hung on a wall body by the chassis 3, and therefore, the chassis 3 needs to have higher structural strength as a stressed structural member. In the related art, the heat dissipation holes are formed in the chassis 3, which easily causes stress concentration at the holes and reduces the structural strength of the chassis 3.

Moreover, in the air-conditioning indoor unit according to the embodiment of the present application, under the condition that the same torque is output to the cross-flow wind wheel 5, the size of the outer rotor motor 11 is significantly smaller than that of the inner rotor motor, so that even if the outer rotor motor 11 is disposed in the volute 2, the size of the volute 2 is not additionally increased, and the volute 2 is guaranteed to be compact in structure.

It should be noted that the mounting base 12 is located on a side of the outer rotor motor 11 away from the cross flow wind wheel 5, so that the mounting base 12 is designed to have a structural form with high rigidity, the structural strength and rigidity of the connection position of the mounting base 12 and the volute 2 are improved, and the mounting reliability of the outer rotor motor 11 is improved. In the process that the power output shaft 111 of the outer rotor motor 11 drives the cross-flow wind wheel 5 to rotate, the outer rotor motor 11 can generate vibration, and the mounting structure on the periphery of the outer rotor motor 11 is easy to generate forced vibration. It can be understood that if set up the sheet metal structure at stator 113's circumference edge and through the sheet metal structure installation to waiting the mounted position, when external rotor motor 11 vibrates, the forced vibration of sheet metal structure, the rigidity and the structural strength of sheet metal structure are not enough, produce vibration noise easily, can split even, and the reliability is poor, can't put into actual product and use. In one embodiment, the outer rotor 112 is substantially bowl-shaped, an axial first end of the outer rotor 112 is open, an axial second end of the outer rotor 112 is closed, the power output shaft 111 extends out from the axial second end of the outer rotor 112, and the stator 113 is exposed at the axial first end of the outer rotor 112, so that the stator 113 is conveniently connected with the mounting base 12.

The power output shaft 111 is arranged in a substantially horizontal direction, that is, the arrangement direction of the power output shaft 111 is substantially horizontal when the motor assembly 1 of the embodiment of the present application is in normal use. It will be appreciated that the power take-off shaft 111 may also be angled from horizontal, for example within plus or minus 10 ° of horizontal.

In some embodiments, a part of the outer rotor 112 may extend into the cross flow wind wheel 5, so that the internal space of the cross flow wind wheel 5 may be fully utilized, and the installation space occupied by the outer rotor motor 11 in the axial direction is reduced, so that the structure of the indoor unit of the air conditioner is more compact. It is understood that the outer rotor 112 may not extend into the cross-flow wind wheel 5 if the installation space is sufficient.

Since the outer rotor motor 11 is disposed in the volute casing 2, the cable of the outer rotor motor 11 needs to be led out from the volute casing 2. The cable of the outer rotor motor 11 may be led out from any suitable position on the volute casing 2.

In an exemplary embodiment, referring to fig. 10, a routing channel 12a for passing a cable of the external rotor motor 11 is disposed inside the mounting base 12, and the routing channel 12a penetrates from a side of the mounting base 12 close to the cross flow wind wheel 5 to a side away from the cross flow wind wheel 5. In this embodiment, after the cable passes through the stator 113, the cable enters the routing channel 12a from one end of the mounting base 12, and then passes through the routing channel 12a from the other end of the mounting base 12, and further passes through the volute 2 from the side wall of the volute 2. The cables are wired in the mounting seat 12, so that the cables are protected, the cables are prevented from being scratched and damaged by other parts, an additional wiring hole is not required to be formed in the volute 2, and the number of holes formed in the volute 2 is reduced.

The specific structure of the mount 12 is not limited. In an exemplary embodiment, referring to fig. 10, 11 and 12, the mounting base 12 includes a support column 121 extending along an axial direction of the power output shaft 111, and the mounting base 12 is supported on a sidewall of the volute 2 along one side of the axial direction of the cross-flow wind wheel 5 through the support column 121. Since the outer rotor motor 11 is in a cantilever support form, a large bending moment is generated in the mount 12 by the weight of the outer rotor motor 11. In this embodiment, the structural form of the support column 121 has a better bending resistance, can bear a larger bending moment, does not crack due to forced vibration, and has high structural reliability.

The cross-sectional shape of the support cylinder 121 in the direction perpendicular to the axial direction thereof is not limited, and for example, may be circular, polygonal, elliptical, or the like. For example, in the embodiment of the present application, the cross-sectional shape of the support cylinder 121 is a circle.

In one embodiment, the center line of the support column 121 is aligned with the axis of the power take-off shaft 111. Therefore, the external rotor motor 11 is prevented from generating extra torque on the support column 121, and the stress condition of the support column 121 can be improved. The center line of the support cylinder 121 refers to a geometric center line of the support cylinder 121, i.e., a line connecting geometric centers of each cross section.

In an embodiment, the mounting base 12 includes a damping sleeve 122 and a blocking cover 123, a circumferential surface of the support column 121 is provided with a blocking surface 121b, the damping sleeve 122 is sleeved on the support column 121, the blocking cover 123 is connected to an end of the support column 121 away from the outer rotor motor 11, and the damping sleeve 122 is sandwiched between the blocking surface 121b and the blocking cover 123 along an axial direction of the support column 121.

During assembly, the damping sleeve 122 is firstly sleeved on the support column 121, the damping sleeve 122 is pushed axially until the damping sleeve 122 abuts against the stop surface 121b, the blocking cover 123 is connected to the end of the support column 121, and the damping sleeve 122 is clamped between the blocking cover 123 and the stop surface 121b, so that the damping sleeve 122 is axially positioned, and the damping sleeve 122 is prevented from axially moving.

The damping sleeve 122 forms a damping support for the motor assembly 1, i.e. the support cylinder 121 does not directly contact the side wall of the volute 2. When the outer rotor motor 11 works, the electromagnetic excitation force is transmitted to the support column 121, and due to the vibration isolation effect of the vibration damping sleeve 122, the support column 121 cannot directly transmit the electromagnetic excitation force to the volute 2, and the electromagnetic excitation force is absorbed by the vibration damping sleeve 122 to a great extent, so that the electromagnetic excitation force transmitted to the volute 2 is greatly reduced, forced vibration of the volute 2 and peripheral structures can be effectively inhibited, and outward radiation noise of an indoor unit of an air conditioner is inhibited.

The material of the damping sleeve 122 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.

The stop surface 121b is formed in any manner as long as it can perform a good axial positioning function on the damping sleeve 122.

For example, in an embodiment, referring to fig. 11, the supporting cylinder 121 is substantially in the form of a stepped shaft, and specifically, the supporting cylinder 121 includes a first sub-cylinder 1211 and a second sub-cylinder 1212 which are arranged along the axial direction, where the first sub-cylinder 1211 is connected to an end of the second sub-cylinder 1212 facing away from the outer rotor motor 11, an outer diameter of the second sub-cylinder 1212 is greater than an outer diameter of the first sub-cylinder 1211, so as to form a step structure at a boundary between the first sub-cylinder 1211 and the second sub-cylinder 1212, and a step surface corresponding to the step structure is the above-mentioned stop surface 121 b. The damping sleeve 122 is fitted over the first sub-column 1211, and one end of the damping sleeve 122 in the axial direction abuts against the stop surface 121 b. The blocking cap 123 is connected to the other end of the first sub-column 1211.

In order to facilitate the reliable coupling of the blocking cover 123 and the support cylinder 121, in one embodiment, a middle region of the blocking cover 123 is provided with a first coupling hole 123b, and a screw 1b is inserted through the first coupling hole 123b from the outside of the blocking cover 123 and is screwed into the support cylinder 121 from one axial end of the support cylinder 121. It is understood that the first connection hole 123b may be a counter bore, so that the screw 1b may be prevented from protruding from the surface of the blocking cover 123.

In one embodiment, referring to fig. 12, the blocking cover 123 includes a blocking plate 1232 and a frustum 1231 protruding from the blocking plate 1232 toward the damping sleeve 122, and an outer diameter of an end of the frustum 1231 near the blocking plate 1232 is larger than an outer diameter of an end far from the blocking plate 1232. One end of the support column 121 facing the blocking cover 123 is provided with a receiving groove 121c, and the frustum 1231 extends into the receiving groove 121 c. When the baffle 1232 is pressed against one axial end of the support column 121 during assembly, the frustum 1231 is inserted into the receiving groove 121c, so as to realize quick positioning of the blocking cover 123. Moreover, when the frustum 1231 can bear the acting force in the direction perpendicular to the power output shaft 111, the shearing force borne by the screw 1b is reduced or avoided, so that the screw 1b mainly bears the axial stress, and the service life and the reliability of the screw 1b are improved.

In one embodiment, an end of the supporting cylinder 121 close to the blocking cover 123 is a blind end, that is, the receiving groove 121c is a blind groove, and the air flow in the air duct 2a does not pass through the supporting body 121. On one hand, the axial force of the airflow on the blocking cover 123 can be avoided; on the other hand, the blind end of the support column 121 acts as a shaft end seal for the outer rotor motor 11, and prevents dust and moisture from entering the outer rotor motor 11 along the axial direction of the mounting seat 12. The frustum 1231 is located at a substantially middle region of the blocking cover 123, and the first connection hole 123b penetrates the frustum 1231 and the blocking plate 1232. That is, the screw 1b is located substantially on the axis of the power take-off shaft 111, so that only one screw 1b is required to meet the connection requirement.

It can be understood that, in the case of the air conditioning indoor unit itself being compact, the size of the motor assembly 1 is relatively small, and the structure is compact, so that the size of the blocking cover 123 can be made small as long as the blocking plate 1232 can abut against the end surface of the damping sleeve 122. In order to meet the requirement of the strength of the connecting structure, the outer diameter of the screw 1b needs to have a relatively reasonable outer diameter, so that the connection between the blocking cover 123 and the supporting column 121 can be realized through a relatively thick screw 1b, the connecting strength can be guaranteed, and the structure is compact.

Referring to fig. 10, in order to facilitate the wiring, the blocking cover 123 is provided with a wire passing hole 123a, and the wiring channel 12a passes through the wire passing hole 123a, that is, the cable of the outer rotor motor 11 passes through the wire passing hole 123 a. The wire passing hole 123a and the first connection hole 123b are eccentrically arranged, so that the screw 1b is prevented from extruding and scratching the cable.

In one embodiment, the outer surface of the first sub-column 1211 of the support column 121 is provided with a first groove 121a extending along the axial direction, the inner surface of the damping sleeve 122 is provided with a second groove 122a extending along the axial direction, the first groove 121a is aligned with the second groove 122a, and the two grooves together enclose a wiring channel, which is a part of the wiring channel 12 a. The wire through hole 123a is communicated with the wire trough, and a cable of the outer rotor motor 11 passes through the wire trough and the wire through hole 123 a. Specifically, the cable is embedded between the inner surface of the damping sleeve 122 and the outer surface of the first sub-column 1211, and is not destructively pressed by the damping sleeve 122 and the first sub-column 1211, and the cable can be fixed to prevent the cable from moving freely. Moreover, the cable does not pass through the first sub-column 1211, so that interference with the connection between the screw 1b and the first sub-column 1211 is avoided, and the increase in the radial dimension of the first sub-column 1211 can be avoided.

In order to prevent the damping sleeve 122 from slipping on the surface of the support cylinder 121, in an embodiment, the outer surface of the portion of the support cylinder 121 for being sleeved with the damping sleeve 122 is provided with a rib 1213 extending in the axial direction, and the rib 1213 is in interference fit with the damping sleeve 122. The number of the ribs 1213 may be one or more.

When the power output shaft 111 drives the cross-flow wind wheel 5 to rotate, the cross-flow wind wheel 5 generates a resistance moment in a reverse direction to the power output shaft 111, the resistance moment enables the support column 121 to have a tendency of rotating relative to the damping sleeve 122, and the convex ribs 1213 of the embodiment of the application can increase the friction force between the damping sleeve 122 and the support column 121, so as to prevent the damping sleeve 122 and the support column 121 from rotating relative to each other.

In one embodiment, the maximum outer diameter of the frustum 1231 is greater than the inner diameter of the damping sleeve 122. Specifically, the maximum outer diameter of the frustum 1231 is the outer diameter near the baffle 1232. It should be noted that, under the design size of the product, the wall surfaces of the frustum 1231 corresponding to the accommodating groove 121c are all arranged at intervals, that is, a certain space is reserved between the two. It can be understood that the damping sleeve 122 of the same batch or different batches can be manufactured with errors, and no matter the actual length of the damping sleeve 122 along the axial direction is greater than or less than the designed length, during the assembly process, the frustum 1231 is wedged into the damping sleeve 122, and as the screw 1b is continuously screwed, the frustum 1231 is continuously wedged into the damping sleeve 122 and forces the damping sleeve 122 to elastically deform, so that the damping sleeve 122 can be clamped between the blocking cover 123 and the support cylinder 121 all the time.

In one embodiment, referring to fig. 10, the damping sleeve 122 includes a sleeve 1221 and an annular flange 1222 protruding from a circumferential surface of the sleeve 1221, the sleeve 1221 is provided with annular flanges 1222 at axially opposite ends, and the sleeve 1221 and the annular flanges 1222 together define an annular groove 122 b.

Referring to fig. 10, the mounting base 12 includes a pressing plate 125, the pressing plate 125 is snapped into the annular groove 122b, and the annular flanges 1222 on both sides limit the pressing plate 125 to prevent the pressing plate 125 from moving axially on the surface of the sleeve 1221. Opposite ends of the pressure plate 125 in the length direction are connected to the scroll casing 2 to press the support cylinder 121 against the scroll casing 2. Illustratively, the pressure plate 125 may be connected with the scroll casing 2 by screws 1 c. Clamping force is formed between the pressure plate 125 and the volute casing 2, the damping sleeve 122 is clamped between the pressure plate 125 and the volute casing 2, namely, the outer rotor motor 11 can be assembled on the volute casing 2 only by tightly connecting the pressure plate 125 to the volute casing 2, and the structure is simple, the assembling process is few, and time and labor are saved.

It can be understood that, in order to facilitate the reliable contact between the pressure plate 125 and the damping sleeve 122, the pressure plate 125 is of an approximately arched structure, so that the pressure plate 125 fits the outer surface of the damping sleeve 122 as much as possible, the contact area between the pressure plate 125 and the damping sleeve is increased, the abutting reliability between the pressure plate and the damping sleeve is improved, and in addition, the pressure plate 125 can also perform a transverse limiting function on the damping sleeve 122 to prevent the damping sleeve 122 from transversely swinging.

Specifically, referring to fig. 10, the pressure plate 125 includes an arched section 1251 and two connecting sections 1252 located at two opposite ends of the arched section 1251 along the length direction, the arched section 1251 is attached to a portion of the circumferential surface of the damping sleeve 122, and the two connecting sections 1252 are fixedly connected to the volute 2. It should be noted that, in order to facilitate the sleeve 1221 to be snapped into the arch-shaped segment 1251, the corresponding central angle of the arch-shaped segment 1251 does not exceed 180 °.

In an embodiment, a notch is formed on a side wall of the scroll casing 2 along one side of the axial direction of the cross flow wind wheel 5, the notch penetrates through the top surface of the scroll casing 2 to form an opening on the top surface of the scroll casing 2, the sleeve 1221 is clamped into the notch along a part of the circumferential direction from the opening, the side wall of the scroll casing 2 is clamped into the ring groove 122b, and the pressure plate 125 is disposed at the top position of the notch. That is, one of the annular flanges 1222 abuts against the inner side of the sidewall of the volute 2, the other annular flange 1222 abuts against the outer side of the sidewall of the volute 2, and the two annular flanges 1222 axially position the damping sleeve 122, so as to prevent the damping sleeve 122 from axially moving in the gap, and further improve the sealing effect at the interface between the damping sleeve 122 and the volute 2, thereby avoiding air leakage.

In one embodiment, referring to fig. 10, the stator 113 is exposed at a side of the outer rotor 112 facing the mounting base 12, the mounting base 12 is disposed on an end plate 124 of the support column 121 facing a side of the outer rotor motor 11, that is, the support column 121 is connected to the end plate 124 and protrudes from an end surface of the end plate 124 facing away from the stator 113, and the support column 121 is fixedly connected to the stator 113 through the end plate 124.

Specifically, referring to fig. 10, the stator 113 has a shaft end surface 113a facing the mounting seat 12 and a plurality of connecting protrusions 1131 protruding from the shaft end surface 113a, and the end plate 124 is connected to the connecting protrusions 1131. Illustratively, the connecting projection 1131 is provided with a screw hole 1131a, and a screw 1a passes through the end plate 124 from the side of the end plate 124 facing away from the stator 113 and is screwed into the screw hole 1131a, so that the stator 113 and the end plate 124 can be fixedly connected. Illustratively, end plate 124 is provided with a plurality of second attachment holes 124a, and screws 1a are inserted through second attachment holes 124a and threaded into screw holes 1131 a. It is understood that the end disc 124 may not be provided with the second connection hole 124a, but the connection position of the screw 1a is marked in advance, and the screw 1a is directly tapped at the installation site.

It is understood that a part of the end surface of the end disk 124 abuts the shaft end surface 113a to increase the contact area of the end disk 124 with the stator 113, improving the connection reliability.

Referring to fig. 10, the stator 113 further has a supporting flange 1132 protruding from the shaft end surface 113a, the supporting cylinder 121 is hollow inside the end close to the outer rotor motor 11, the supporting flange 1132 extends into the supporting cylinder 121, and the supporting cylinder 121 is supported on the supporting flange 1132. Specifically, the interior of the second sub-column 1212 of the support cylinder 121 is hollow, and the second sub-column 1212 is sleeved on the support flange 1132. The second sub-column 1212 supports the support flange 1132, and can reduce the shearing force borne by the screw 1a at the joint of the stator 113 and the end disc 124, thereby improving the reliability of the connection between the stator 113 and the end disc 124.

In one embodiment, the support flange 1132 and the second sub-post 1212 may have a clearance fit.

In some embodiments, referring to fig. 10 and 11, the end plate 124 is provided with a plurality of second connecting holes 124a, a first reinforcing ring rib 1241 and a second reinforcing ring rib 1242, and the screws 1a pass through the second connecting holes 124a and are screwed into the connecting protrusions 1131. Each of the second coupling holes 124a and the end of the support cylinder 121 are located in an area surrounded by the first reinforcing ring bead 1241. A second reinforcing ring rib 1242 is arranged around each second connecting hole 124a in a surrounding manner, and on one hand, the second reinforcing rib improves the structural strength around the second connecting hole 124a, and on the other hand, prevents the screw 1a from protruding out of the surface of the end disc 124, and prevents the screw 1a from scratching a cable in the assembling process.

Second reinforcing ring muscle 1242 is connected with first reinforcing ring muscle 1241 along the radial outside of end disc, and second reinforcing ring muscle 1242 is connected with the surface connection of support column 121 along the radial inboard of end disc, so, can promote the structural strength of end disc 124.

It should be noted that the first reinforcing ring rib 1241 in the embodiment of the present application is referred to as being generally around the periphery of each second connecting hole 124a and the support cylinder 121, and the first reinforcing ring rib 1241 may be generally in the shape of a circular ring, an ellipse, a polygon, or the like. The first reinforcement ring 1241 may be of an uninterrupted continuous structure or may be of an interrupted discontinuous structure.

It should be noted that the second reinforcing ring rib 1242 in the embodiment of the present application is referred to as being generally surrounded around the second connecting hole 124a, and the second reinforcing ring rib 1242 may be generally circular, elliptical, polygonal, or the like. The second reinforcement loop 1242 may be an uninterrupted continuous structure or may be an interrupted discontinuous structure.

In an embodiment, the end disc 124 and the support column 121 are integrally formed, so as to improve the structural reliability of the junction between the end disc 124 and the support column 121, reduce the number of parts, and reduce the number of assembly processes. Illustratively, the end plate 124 and the support column 121 are integrally formed as a plastic component to reduce the overall weight of the mounting base 12.

In one embodiment, the outer diameter of the outer rotor 112, the outer diameter of the end disc 124, the outer diameter of the first annular flange 1222 of the damping sleeve 122 near the end disc, the outer diameter of the other annular flange 1222 of the damping sleeve 122, and the outer diameter of the blocking cover 123 are gradually decreased in sequence. In this way, the structure of the motor assembly 1 can be made compact.

In the air-conditioning indoor unit according to the embodiment of the present application, the pressing plate 125 is removed, and the motor assembly 1 may be preassembled into a preassembled unit. On the assembly line of the indoor unit of the air conditioner, the motor assembly 1 can be directly assembled on the volute casing 2 as an integral part, so that the assembly time of the assembly line can be saved, and the assembly efficiency is improved.

Referring to fig. 3, 5 to 7, the air conditioning indoor unit further includes a motor cover assembly 7 for pressing the mounting seat 12 against the chassis 3. It should be noted that, because the electronic control box 6 is disposed adjacent to the heat exchanger 4, it is necessary to properly protect the electronic control box 6 from moisture and water, so as to prevent the generated condensed water or moisture of the heat exchanger 4 from causing a large influence on the electronic control box 6, and in an embodiment, the motor gland assembly 7 is disposed between the electronic control box 6 and the heat exchanger 4 in a blocking manner and is capable of containing the condensed water generated by the heat exchanger 4. It can be understood that the motor gland assembly 7 mainly receives the condensed water generated at the end of the heat exchanger 4.

The motor gland assembly 7 is arranged between the electric control box 6 and the heat exchanger 4 in a blocking mode, namely, the motor gland assembly 7 is air-tight and water-tight, and condensed water cannot penetrate through the motor gland assembly 7 and splash onto the electric control box 6.

In this embodiment, the motor gland assembly 7 not only plays a role in installing the motor assembly, but also plays a role in containing and receiving condensed water and playing waterproof and moistureproof roles in the electric control box 6.

In one embodiment, referring to fig. 5 to 7, the indoor unit of the air conditioner includes a liquid inlet pipeline 81 and a gas collecting pipeline 82 connected to the heat exchanger 4, wherein the liquid refrigerant in the liquid inlet pipeline 81 flows into the heat exchanger 4, and the gaseous refrigerant discharged from the heat exchanger 4 enters the gas collecting pipeline 82. An avoidance gap 3a is arranged on the chassis 3, and the liquid inlet pipeline 81 and the air collecting pipeline 82 are wound to the rear side of the chassis 3 from the upper part of the electric control box 6 through the avoidance gap 3 a. That is, at least a part of the electronic control box 6 is located below the liquid inlet line 81 and the gas collecting line 82, and the space below the liquid inlet line 81 and the gas collecting line 82 can be fully utilized.

In one embodiment, referring to fig. 4, a minimum distance L2 between an end surface of the chassis 3 in the length direction and the avoidance gap 3a is smaller than a width L1 of the avoidance gap 3. Because the electronic control box 6 can occupy the installation space of the chassis 3 within the width range of the avoidance gap 3a, the width of the chassis 3 on the side of the avoidance gap 3a far away from the heat exchanger 4 is smaller.

In an embodiment, referring to fig. 13 and 14, the motor cover assembly 7 includes a motor cover 71 and a water blocking plate 72 located on one side of the motor cover 71 close to the electric control box 6, a top end of the water blocking plate 72 extends toward one side of the electric control box 6 to form a boss structure 721, the boss structure 721 is located below the liquid inlet pipe 81 and above the electric control box 6, that is, a height of the water blocking plate 72 is higher than a height of the electric control box 6. The convex structure 721 facilitates the water baffle 72 to avoid the liquid inlet pipeline 81 and the gas collecting pipeline 82, and on the other hand, can also play a better protection role for the electronic control box 6.

It should be noted that the edge of the water baffle 72 is provided with a rib 722, and the rib 722 can prevent condensed water from splashing to the outside of the motor gland assembly 7.

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

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

a chassis configured with a volute (2);

the cross-flow wind wheel (5), the cross-flow wind wheel (5) is rotationally arranged in the volute (2);

the motor assembly (1), the motor assembly (1) includes an outer rotor motor (11) and a mounting seat (12), the outer rotor motor (11) is located in an air duct (2a) of the volute (2), the outer rotor motor (11) includes a power output shaft (111), an outer rotor (112) and a stator (113), the power output shaft (111) is connected with the cross-flow wind wheel (5) to drive the cross-flow wind wheel (5) to rotate, the mounting seat (12) is connected with the stator (113) and located on one side of the outer rotor motor (11) departing from the cross-flow wind wheel (5), and the outer rotor motor (11) is supported on the volute (2) through the mounting seat (12).

2. The indoor unit of air conditioner as claimed in claim 1, wherein the mounting seat (12) includes a support column (121) extending in the axial direction of the power output shaft (111), and the mounting seat (12) is supported on the side wall of the volute (2) on one side in the axial direction of the cross-flow wind wheel (5) through the support column (121).

3. The indoor unit of claim 2, wherein the center line of the support column (121) is aligned with the axis of the power take-off shaft (111).

4. The indoor unit of air conditioner according to claim 1, wherein a wiring channel (12a) for passing a cable of the outer rotor motor (11) is provided inside the mounting base (12), and the wiring channel (12a) penetrates from one side of the mounting base (12) close to the cross-flow wind wheel (5) to one side of the mounting base (12) away from the cross-flow wind wheel (5).

5. The indoor unit of air conditioner as claimed in claim 2, wherein the mounting seat (12) includes a damping sleeve (122) and a blocking cover (123), a stop surface (121b) is disposed on a circumferential surface of the support column (121), the damping sleeve (122) is sleeved on the support column (121), the blocking cover (123) is connected to an end of the support column (121) far away from the outer rotor motor (11), and the damping sleeve (122) is sandwiched between the stop surface (121b) and the blocking cover (123) along an axial direction of the support column (121).

6. The indoor unit of air conditioner according to claim 5, wherein the baffle cover (123) includes a baffle plate (1232) and a frustum (1231) protruding from the baffle plate (1232) toward the damping sleeve (122), an outer diameter of an end of the frustum (1231) close to the baffle plate (1232) is larger than an outer diameter of an end of the frustum (1232) far away from the baffle plate, an end of the support column (121) facing an end of the baffle cover (123) is provided with a receiving groove (121c), and the frustum (1231) extends into the receiving groove (121 c).

7. The air conditioning indoor unit of claim 6, wherein the maximum outer diameter of the frustum (1231) is larger than the inner diameter of the damping sleeve (122); and/or the presence of a gas in the gas,

one end, close to the blocking cover (123), of the supporting column (121) is a blind end, a first connecting hole (123b) penetrating through the blocking plate (1232) and the frustum (1231) is formed in the middle area of the blocking cover (123), and a screw penetrates through the first connecting hole (123b) and is screwed into the supporting column (121).

8. The indoor unit of air conditioner as claimed in claim 5, wherein the outer surface of the portion of the support cylinder (121) for engaging with the damping sleeve (122) is provided with a rib (1213), and the rib (1213) is in interference fit with the damping sleeve (122).

9. The indoor unit of air conditioner according to claim 5, wherein the support cylinder (121) includes a first sub-cylinder (1211) and a second sub-cylinder (1212) arranged along an axial direction, the first sub-cylinder (1211) is connected to an end of the second sub-cylinder (1212) facing away from the external rotor motor (11), an outer diameter of the second sub-cylinder (1212) is greater than an outer diameter of the first sub-cylinder (1211) to form the stop surface (121b) at a boundary of the first sub-cylinder (1211) and the second sub-cylinder (1212), and the damping sleeve (122) is sleeved on the first sub-cylinder (1211).

10. The indoor unit of claim 9, wherein the outer surface of the first sub-column (1211) is provided with a first groove (121a) extending in the axial direction, the inner surface of the damping sleeve (122) is provided with a second groove (122a) extending in the axial direction, the first groove (121a) and the second groove (122a) are commonly defined as a wiring groove, the blocking cover (123) is provided with a wire passing hole (123a) communicating with the wiring groove, and a cable of the outer rotor motor (11) passes through the wiring groove and the wire passing hole (123 a).

11. The indoor unit of claim 5, wherein the damping sleeve (122) comprises a sleeve (1221) and an annular flange (1222) protruding from a circumferential surface of the sleeve (1221), the annular flanges (1222) are disposed at axially opposite ends of the sleeve (1221), and the sleeve (1221) and the annular flanges (1222) together define an annular groove (122 b); the mounting seat (12) comprises a pressure plate (125), the pressure plate (125) is clamped into the annular groove (122b), and the two opposite ends of the pressure plate (125) in the length direction are connected with the volute (2) to press the support cylinder (121) on the volute (2).

12. The indoor unit of an air conditioner according to claim 11, wherein a side wall of the scroll casing (2) is formed with a notch penetrating a top surface of the side wall of the scroll casing (2), the sleeve (1221) is caught in the notch along a part of a circumferential direction, and the side wall of the scroll casing (2) is caught in the ring groove (122 b).

13. The indoor unit of claim 2, wherein the stator (113) is exposed from a side of the outer rotor (112) facing the mounting base (12), the mounting base (12) comprises an end disc (124) disposed on a side of the support column (121) facing the outer rotor motor (11), and the mounting base (12) is connected to the stator (113) through the end disc (124).

14. The indoor unit of claim 13, wherein the stator (113) has a shaft end surface (113a) facing the mount base (12), a plurality of coupling protrusions (1131) protruding from the shaft end surface (113a), and a support flange (1132) protruding from the shaft end surface (113a), the plurality of coupling protrusions (1131) are arranged at intervals in a circumferential direction of the support flange (1132), the support cylinder (121) has a hollow interior near one end of the outer rotor motor (11), the support flange (1132) protrudes into the support cylinder (121), and the end plate (124) is coupled to the coupling protrusions (1131).

15. The indoor unit of air conditioner according to claim 14, wherein the head plate (124) is provided with a plurality of second coupling holes (124a), a first reinforcing ring rib (1241), and a second reinforcing ring rib (1242), screws are inserted through the second coupling holes (124a) and screwed into coupling protrusions (1131), each of the second coupling holes (124a) and the end of the support cylinder are located in an area surrounded by the first reinforcing ring rib (1241), the second reinforcing ring rib (1242) is surrounded around each of the second coupling holes (124a), the second reinforcing ring rib (1242) is coupled to the first reinforcing ring rib (1241) along a radially outer side of the head plate, and the second reinforcing ring rib (1242) is coupled to an outer surface of the support cylinder (121) along a radially inner side of the head plate.

16. The indoor unit of air conditioner as claimed in claim 2, characterized in that the indoor unit of air conditioner comprises a heat exchanger (4), an electric control box (6) and a motor gland assembly (7) for pressing the mounting seat (12) against the chassis (3), an air inlet is formed at the upper part of the volute (2), the heat exchanger (4) is covered above the air inlet, and the air current after heat exchange through the heat exchanger (4) can enter the air duct (2a) through the air inlet under the action of the cross-flow wind wheel (5); the motor gland assembly (7) is arranged between the electric control box (6) and the heat exchanger (4) in a blocking mode and can contain condensed water generated by the heat exchanger (4).

17. The indoor unit of air conditioner as claimed in claim 16, wherein the indoor unit of air conditioner comprises a liquid inlet pipeline (81) and a gas collecting pipeline (82) connected with the heat exchanger (4), an avoiding gap (3a) is arranged on the chassis (3), and the liquid inlet pipeline (81) and the gas collecting pipeline (82) are wound to the rear side of the chassis (3) from the upper side of the electronic control box (6) through the avoiding gap (3 a).

18. The indoor unit of air conditioner as claimed in claim 17, wherein the motor cover assembly (7) includes a motor cover (71) and a water baffle (72) located at one side of the motor cover (71) close to the electric control box (6), the top end of the water baffle (72) extends towards one side of the electric control box (6) to form a boss structure (721), and the boss structure (721) is located below the liquid inlet pipeline (81) and above the electric control box (6).

19. The indoor unit of air conditioner according to claim 17, wherein the minimum distance between the end surface of the chassis (3) in the length direction and the avoidance gap (3a) is smaller than the width of the avoidance gap (3 a).

20. An air conditioner comprising an outdoor unit and the indoor unit of any one of claims 1 to 19, the outdoor unit and the indoor unit being connected by refrigerant pipes.