Air conditioner

Abstract

The utility model discloses an air conditioner which comprises an indoor unit, the indoor unit comprises a machine shell, an indoor heat exchanger and a heat exchange fan, the heat exchange fan is arranged in a containing cavity and comprises a heat exchange fan, a first driving motor and a first buffering piece, and the first driving motor comprises a first stator and a first rotor. The first rotor is rotatably arranged on the outer side of the first stator, the heat exchange fan is located on one side, in the axial direction of the first rotor, of the first rotor, the first rotor is used for driving the heat exchange fan to rotate, and the first buffer part is connected to the heat exchange fan and the first rotor; the first buffering piece is located between the heat exchange fan and the first rotor in the axial direction of the first rotor. By the adoption of the scheme, the first buffering piece is arranged, the first buffering piece can transmit the rotating power of the first rotor to the heat exchange fan, meanwhile, the damping effect can be achieved between the first rotor and the heat exchange fan, and therefore noise generated when the heat exchange fan works can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to air conditioning technical field especially relates to a kind of air conditioners. BACKGROUND

[0002] Air conditioner includes indoor unit, and indoor unit includes casing, and first cavity is formed in casing, and heat exchange air inlet and heat exchange air outlet are provided on casing, wherein, heat exchange air inlet and heat exchange air outlet are communicated with first cavity.Indoor unit further includes indoor heat exchanger and heat exchange fan, and indoor heat exchanger and heat exchange fan are arranged in first cavity, and heat exchange fan is arranged at the front side of indoor heat exchanger, and under the drive of heat exchange fan, indoor air enters first cavity from indoor air inlet, and indoor air in first cavity exchanges heat with indoor heat exchanger and then flows out from heat exchange air outlet.

[0003] Heat exchange fan usually includes heat exchange fan and first driving motor, and first driving motor usually includes first stator and first rotor, and first rotor is connected with heat exchange fan, and first rotor is used to drive heat exchange fan to rotate, so as to provide power for heat exchange air to flow out from heat exchange air outlet.

[0004] However, in the related art, heat exchange fan and first rotor are directly connected, and vibration generated when first driving motor works is directly transmitted from first rotor to heat exchange fan, which can easily cause vibration noise and affect user's experience. UTILITY MODEL CONTENTS

[0005] The utility model embodiment discloses an air conditioner, by setting first buffer piece, first buffer piece can reduce the noise generated when heat exchange fan works while realizing the power transmission of first rotor rotation to heat exchange fan, so as to be able to reduce.

[0006] In order to achieve the above purpose, first aspect, the utility model discloses an air conditioner, comprising:

[0007] Indoor unit;

[0008] The indoor unit comprises:

[0009] Casing, the accommodating cavity is formed in the casing, and the casing has heat exchange air outlet, and the heat exchange air outlet is communicated with the accommodating cavity;

[0010] Indoor heat exchanger, the indoor heat exchanger is arranged in the accommodating cavity, and the indoor heat exchanger is used for heat exchange with indoor air entering the casing;And

[0011] Heat exchange fan, the heat exchange fan is arranged in the accommodating cavity and is located at the leeward side of the indoor heat exchanger;

[0012] Wherein, the heat exchange fan comprises:

[0013] Heat exchange fan;

[0014] A first drive motor includes a first stator and a first rotor. The first rotor is rotatably sleeved on the outer periphery of the first stator. The heat exchange fan is located on one side of the first rotor along the axial direction, and the first rotor drives the heat exchange fan to rotate.

[0015] A first buffer is connected to the heat exchange fan and the first rotor, such that the first buffer is at least partially located between the heat exchange fan and the first rotor along the axial direction of the first rotor.

[0016] The air conditioner of this application has a housing cavity for accommodating components such as an indoor heat exchanger and a heat exchange fan. A heat exchange air outlet is formed on the housing. Driven by the heat exchange fan, indoor air exchanges heat with the indoor heat exchanger within the housing cavity and then flows out through the heat exchange air outlet. The heat exchange fan includes a heat exchange fan, a first drive motor, and a first buffer component. Under the action of a first stator, a first rotor can rotate relative to the first stator around its own axial direction, thereby driving the heat exchange fan to rotate and causing the heat exchange fan to discharge the heat exchange air from the heat exchange air outlet. Furthermore, by providing the first buffer component, it not only transmits the power of the first rotor's rotation to the heat exchange fan but also dampens vibrations between the first rotor and the heat exchange fan, thereby reducing noise generated during the operation of the heat exchange fan and improving the user experience.

[0017] As an optional implementation, the first buffer includes a first part and a second part that are connected to each other along the axial direction of the first rotor. The first part extends along the axial direction of the first rotor to connect the heat exchange fan and the first rotor, and the second part is sleeved on the outside of the first rotor.

[0018] By setting the first buffering piece as the first part and the second part, the first part is arranged along the axial direction of the first rotor, which can make the heat exchange fan and the first stator have a certain safety distance while achieving the connection with the heat exchange fan and the first rotor, avoiding the collision between the heat exchange fan and the first stator during the rotation of the heat exchange fan, and causing damage to the heat exchange fan and the first stator. By sleeving the second part on the outside of the first rotor, on the one hand, the setting of the second part can improve the overall length of the first buffering piece in the axial direction of the first rotor, and improve the contact area between the first buffering piece and the first rotor, thereby improving the damping effect of the first buffering piece on the first rotor and the heat exchange fan, on the other hand, it can improve the torsional resistance of the first buffering piece, reduce the damage of the first buffering piece during the rotation of the first rotor, and on the other hand, since the inside of the first rotor and the first stator are magnetically matched, such setting will not affect the magnetic matching between the first rotor and the first stator, and also facilitates the assembly of the first buffering piece and the first rotor.

[0019] As an optional implementation, the heat exchange fan comprises a mounting piece and a plurality of fan blades, the plurality of fan blades are mounted on the mounting piece, a first mounting groove is formed on the side of the mounting piece away from the fan blades, and the first part is arranged in the first mounting groove.

[0020] The mounting piece is used for mounting the plurality of fan blades, and a first mounting groove is formed on the side of the mounting piece away from the fan blades, which can facilitate the assembly of the first buffering piece and the first part of the mounting piece, and also can limit the first buffering piece.

[0021] As an optional implementation, the mounting piece comprises a first plate part, a first enclosing part and a second enclosing part, the first plate part comprises a first side and a second side opposite along the axial direction of the first rotor, the plurality of fan blades are mounted on the first side, the first enclosing part and the second enclosing part are arranged from the second side along the axial direction of the first rotor, the first enclosing part and the second enclosing part are arranged around along the circumferential direction of the first rotor, and the second enclosing part is located in the first enclosing part to form the first mounting groove between the first enclosing part and the second enclosing part.

[0022] The first side of the first plate part can be used for mounting the plurality of fan blades, and the second side of the first plate part can be used for mounting the first part of the first buffering piece. By arranging the first enclosing part and the second enclosing part on the first plate part, the first mounting groove can be formed between the first enclosing part and the second enclosing part for mounting the first part of the first buffering piece, and the first enclosing part and the second enclosing part can limit the position of the first part relative to the first plate part in the radial direction of the first rotor, reducing the risk of the first buffering piece being detached from the mounting piece in the radial direction of the first rotor.

[0023] As an optional implementation, the outer side of the first part is provided with a first limiting part, the first enclosing part is provided with a second limiting part, the first limiting part is snap-connected to the second limiting part to limit the position of the first part relative to the first enclosing part in the axial direction of the first rotor, one of the first limiting part and the second limiting part is a protrusion, and the other is a recess;

[0024] And / or, the inner side of the first part is provided with a third limiting part, the second enclosing part is provided with a fourth limiting part, the third limiting part is snap-connected to the fourth limiting part to limit the position of the first part relative to the second enclosing part in the axial direction of the first rotor, one of the third limiting part and the fourth limiting part is a protrusion, and the other is a recess.

[0025] In this way, through the snap-connection of the first limiting part and the second limiting part, the position of the first part relative to the first enclosing part in the axial direction of the first rotor can be limited, and the risk of the first buffer part being detached from the mounting part in the axial direction of the first rotor is reduced. Through the snap-connection of the third limiting part and the fourth limiting part, the position of the first part relative to the second enclosing part in the axial direction of the first rotor can be limited, and the risk of the first buffer part being detached from the mounting part in the axial direction of the first rotor is reduced.

[0026] As an optional implementation, the inner side of the first part is provided with a first recess, the second enclosing part is connected to the side wall surface and the bottom surface of the first recess, the third limiting part is a recess, and the third limiting part is arranged on the side wall surface of the first recess;

[0027] The bottom surface of the first recess is provided with a first snap part extending in the axial direction of the first rotor, the second enclosing part is provided with a second snap part extending in the axial direction of the first rotor, and the first snap part is snap-connected to the second snap part to fix the first part and the second enclosing part in the circumferential direction of the first rotor.

[0028] Through the connection and cooperation of the first recess and the second enclosing part, on the one hand, the positioning and assembly of the first part of the first buffer part and the mounting part can be facilitated, and on the other hand, the position of the first part relative to the mounting part in the axial direction of the first rotor and in the radial direction of the first rotor can be limited. Through the snap-connection of the first snap part and the second snap part, the position of the first part relative to the mounting part in the circumferential direction of the first rotor can be limited, so that when the first rotor drives the first buffer part to rotate, the first buffer part can better transmit the power in the circumferential direction of the first rotor to the mounting part, thereby better driving the mounting part to rotate.

[0029] As an optional implementation, a size of the first engaging portion in a circumferential direction of the first rotor is L, and the size L satisfies: L≥10mm, and / or, L≤15mm.

[0030] On the one hand, the protrusion can have a certain structural strength, so that the protrusion has sufficient torsional resistance, and the risk of breakage of the first buffer during rotation of the mounting member is reduced. On the other hand, the size of the groove can be avoided to be too large to affect the structural strength of the second enclosing portion of the first buffer or the mounting member.

[0031] As an optional implementation, the first rotor includes a second plate portion, a third enclosing portion, and a fourth enclosing portion. The third enclosing portion and the fourth enclosing portion are protruded from one side of the second plate portion in an axial direction of the first rotor along the axial direction of the first rotor. The third enclosing portion and the fourth enclosing portion are arranged in a circumferential direction of the first rotor, and the fourth enclosing portion is located in the third enclosing portion to form a second mounting groove between the third enclosing portion and the fourth enclosing portion. The second portion is arranged outside the fourth enclosing portion and in the second mounting groove.

[0032] The second plate portion is used to carry the third enclosing portion and the fourth enclosing portion. The fourth enclosing portion is a main part of the first rotor and the first stator for magnetic cooperation. The second mounting groove can be formed between the third enclosing portion and the fourth enclosing portion for mounting the second portion of the first buffer. The third enclosing portion and the fourth enclosing portion can limit the position of the second portion relative to the second plate portion in the radial direction of the first rotor, and reduce the risk of the first buffer being detached from the first rotor in the radial direction of the first rotor.

[0033] As an optional implementation, the outer side of the second portion is provided with a fifth limiting portion, and the third enclosing portion is provided with a sixth limiting portion. The fifth limiting portion is engaged and connected to the sixth limiting portion to limit the position of the second portion relative to the third enclosing portion in the axial direction of the first rotor. One of the fifth limiting portion and the sixth limiting portion is protruding, and the other is recessed.

[0034] And / or, the inner side of the second portion is provided with a seventh limiting portion, and the fourth enclosing portion is provided with an eighth limiting portion. The seventh limiting portion is engaged and connected to the eighth limiting portion to limit the position of the second portion relative to the fourth enclosing portion in the axial direction of the first rotor. One of the seventh limiting portion and the eighth limiting portion is protruding, and the other is recessed.

[0035] By the engagement connection of the fifth limiting part and the sixth limiting part, the position of the second part relative to the third enclosing part in the axial direction of the first rotor can be limited, and the risk of the first buffer being detached from the first rotor in the axial direction of the first rotor is reduced.

[0036] As an optional implementation, in the radial direction of the first rotor, the first buffer is flush with the inner side of the first rotor.

[0037] The first buffer and the first rotor can have a certain safety distance from the first stator in the radial direction of the first rotor, avoiding the problem of damage to the first buffer, the first rotor and the first stator caused by collision between the first buffer and the first stator during rotation of the first buffer and the first rotor.

[0038] In a second aspect, the utility model discloses a kind of air conditioners, comprising:

[0039] Indoor unit;

[0040] The indoor unit comprises:

[0041] Casing, the accommodating cavity is formed in the casing, the casing has heat exchange air outlet and fresh air outlet, the heat exchange air outlet and the fresh air outlet are communicated in the accommodating cavity of the casing;

[0042] Indoor heat exchanger, the indoor heat exchanger is located in the accommodating cavity, and the indoor heat exchanger is used for heat exchange with indoor air entering the casing;

[0043] Heat exchange fan, the heat exchange fan is located in the accommodating cavity and is located at the leeward side of the indoor heat exchanger;

[0044] Fresh air fan, the fresh air fan is located in the accommodating cavity;

[0045] The fresh air fan comprises:

[0046] Fresh air fan;

[0047] Second driving motor, comprising second stator and second rotor, the second rotor rotatable sleeve is arranged on the outer periphery of the second stator, the fresh air fan is located at one side of the second rotor in axial direction, and the second rotor is used to drive the fresh air fan to rotate;

[0048] A second buffer is connected with the fresh air fan and the second rotor, so that the second buffer is at least partially located between the fresh air fan and the second rotor in the axial direction of the second rotor.

[0049] The air conditioner of the present application, the accommodating cavity of the casing is used for accommodating components such as the indoor heat exchanger, the heat exchange fan and the fresh air fan, and the casing is formed with a heat exchange air outlet and a fresh air outlet. Under the driving of the heat exchange fan, indoor air can flow out of the heat exchange air outlet after being exchanged with the indoor heat exchanger in the accommodating cavity, and under the driving of the fresh air fan, fresh air can flow out of the fresh air outlet. The fresh air fan includes a fresh air fan, a second driving motor and a second buffer. Under the action of the second stator, the second rotor can rotate relative to the second stator in the axial direction of the second rotor, so that the second rotor can drive the fresh air fan to rotate, so that the fresh air fan introduces outdoor fresh air into the room and discharges fresh air from the fresh air outlet. In addition, by arranging the second buffer, the second buffer can not only transmit the power of rotating the second rotor to the fresh air fan, but also can reduce the vibration between the second rotor and the fresh air fan, so as to reduce the noise generated when the fresh air fan works and improve the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0050] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0051] Figure 1 is a perspective structural schematic view of the indoor unit disclosed in the first aspect of the present application;

[0052] Figure 2 is a perspective structural schematic view of the indoor unit (with part of the casing hidden) disclosed in the first aspect of the present application;

[0053] Figure 3 is a perspective structural schematic view of the heat exchange fan disclosed in the first aspect of the present application;

[0054] Figure 4 is a structural schematic view of the heat exchange fan (with the fan blades hidden) disclosed in the first aspect of the present application;

[0055] Figure 5 is Figure 4 is a sectional view of the heat exchange fan (with the fan blades hidden) of in the A-A direction;

[0056] Figure 6 is a perspective structural schematic view of the mounting member disclosed in the first aspect of the present application;

[0057] Figure 7 is another perspective view of the mounting member disclosed by the first aspect of the embodiments of the present application;

[0058] Figure 8 is a perspective view of the first buffer member disclosed by the first aspect of the embodiments of the present application;

[0059] Figure 9 is another perspective view of the first buffer member disclosed by the first aspect of the embodiments of the present application;

[0060] Figure 10 is a B part enlarged view of Figure 5

[0061] Figure 11 is a C part enlarged view of Figure 5

[0062] Figure 12 is a structural schematic view of the first buffer member disclosed by the first aspect of the embodiments of the present application;

[0063] Figure 13 is a perspective view of the first rotor disclosed by the first aspect of the embodiments of the present application;

[0064] Figure 14 is another perspective view of the first rotor disclosed by the first aspect of the embodiments of the present application.

[0065] icon:

[0066] 1, indoor unit;

[0067] 10, cabinet; 100, accommodating cavity; 101, heat exchange air outlet;

[0068] 11, indoor heat exchanger;

[0069] 2, heat exchange fan;

[0070] 20, heat exchange fan; 20a, mounting member; 200, first plate part; 2000, first side; 2001, second side; 201, first enclosing part; 2010, second limiting part; 202, second enclosing part; 2020, fourth limiting part; 2021, second clamping part; 203, first mounting slot; 20b, fan blade;

[0071] 21, first driving motor; 21a, first stator; 21b, first rotor; 210, second plate part; 211, third enclosing part; 2110, sixth limiting part; 212, fourth enclosing part; 2120, eighth limiting part; 213, second mounting slot;

[0072] ​​22, first buffer; 220, first part; 2200, first limiting portion; 2201, third limiting portion; 2202, first groove; 2203, first clamping portion; 221, second part; 2210, fifth limiting portion; 2211, seventh limiting portion;

[0073] X, axial direction. DETAILED DESCRIPTION

[0074] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0075] The technical solutions of the utility model will be further described in connection with the embodiments and drawings.

[0076] Please refer to Figure 1 With Figure 2 The first aspect of the embodiments of the application discloses an air conditioner, which comprises an indoor unit 1 and an outdoor unit (not shown).

[0077] Specifically, the indoor unit 1 comprises a casing 10, an indoor heat exchanger 11 and a heat exchange fan 2. The casing 10 has a receiving cavity 100 formed therein. The casing 10 has a heat exchange air outlet 101 which is communicated with the receiving cavity 100. The indoor heat exchanger 11 is arranged in the receiving cavity 100. The indoor heat exchanger 11 is used for heat exchange with indoor air entering the casing 10. The heat exchange fan 2 is arranged in the receiving cavity 100 and located in front of the indoor heat exchanger 11.

[0078] The receiving cavity 100 of the casing 10 is used for accommodating the indoor heat exchanger 11 and the heat exchange fan 2 and the like. The casing 10 has the heat exchange air outlet 101 formed thereon. Under the drive of the heat exchange fan 2, the indoor air is heat-exchanged with the indoor heat exchanger 11 in the receiving cavity 100 and then flows out of the heat exchange air outlet 101 to form heat exchange air.

[0079] In some embodiments, the outdoor unit comprises an outdoor casing, an outdoor heat exchanger and an outdoor fan. The outdoor casing has an outdoor receiving space. The outdoor fan and the outdoor heat exchanger are arranged in the outdoor receiving space.

[0080] In some embodiments, the outdoor shell is provided with an outdoor air inlet and an outdoor air outlet, both of which are in communication with the outdoor containing space. The outdoor air inlet is configured to introduce outdoor air into the outdoor containing space, and the outdoor air outlet is configured to lead the air in the outdoor containing space out of the outdoor containing space. The rotation of the outdoor fan causes the outdoor air to enter the outdoor containing space from the outdoor air inlet and exchange heat with the outdoor heat exchanger, and the outdoor air after heat exchange flows out of the outdoor containing space from the outdoor air outlet.

[0081] In some embodiments, the air conditioner outdoor unit further comprises a compressor and a throttling device, both of which are arranged in the outdoor containing space. The upright air conditioner performs a refrigeration cycle of the upright air conditioner by using the compressor, the condenser, the throttling device and the evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion and evaporation, and supplies refrigerant to the air that has been adjusted and heat exchanged. The compressor compresses the low-temperature and low-pressure state refrigerant gas to discharge high-temperature and high-pressure state refrigerant gas, and the discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process. The throttling device expands the high-temperature and high-pressure state liquid phase refrigerant condensed in the condenser into low-pressure liquid phase refrigerant. The evaporator evaporates the refrigerant expanded in the throttling device, and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a refrigeration effect by exchanging heat with the material to be cooled by using the latent heat of evaporation of the refrigerant. Throughout the cycle, the upright can adjust the temperature of the indoor space.

[0082] In some embodiments, in both the indoor heat exchanger 11 and the outdoor heat exchanger, one of which is a condenser and the other of which is an evaporator, when the indoor heat exchanger 11 is used as a condenser, the upright air conditioner is used as a heater in heating mode, and when the indoor heat exchanger 11 is used as an evaporator, the upright air conditioner is used as a cooler in cooling mode.

[0083] Please refer to Figure 3 In some embodiments, the heat exchange fan 2 comprises a heat exchange fan 20, a first driving motor 21 and a first buffer 22. The first driving motor 21 comprises a first stator 21a and a first rotor 21b, the first rotor 21b is rotatably sleeved on the outer periphery of the first stator 21a, the heat exchange fan 20 is located on one side of the first rotor 21b in the axial direction X, the first rotor 21b is used to drive the heat exchange fan 20 to rotate, and the first buffer 22 is connected with the heat exchange fan 20 and the first rotor 21b, so that the first buffer 22 is at least partially located between the heat exchange fan 20 and the first rotor 21b in the axial direction X of the first rotor 21b.

[0084] The air conditioner of the first aspect of the present application, under the action of the first stator 21a, the first rotor 21b can rotate relative to the first stator 21a around the axial direction X of itself, so that the first rotor 21b can drive the heat exchange fan 20 to rotate, so that the heat exchange fan 20 discharges the heat exchange air from the heat exchange air outlet 101. In addition, by arranging the first buffer 22, the first buffer 22 can realize the transmission of the power for rotating the first rotor 21b to the heat exchange fan 20, and at the same time, can play a damping role between the first rotor 21b and the heat exchange fan 20, so as to reduce the noise generated when the heat exchange fan 2 works, and improve the user's experience.

[0085] Optionally, the material of the first buffer 22 can be rubber or silicone, etc., which can be selected according to actual conditions, and is not limited in the embodiment.

[0086] Optionally, the first buffer 22 can be a ring structure or a plate structure, etc., which can be selected according to actual conditions. In the following, the first buffer 22 is taken as an example of a ring structure.

[0087] Please see Figure 4 With Figure 5 In some embodiments, the first buffer 22 includes a first part 220 and a second part 221 connected to each other along the axial direction X of the first rotor 21b, the first part 220 and the second part 221 are arranged around the circumferential direction of the first rotor 21b, the first part 220 is arranged along the axial direction X of the first rotor 21b to connect the heat exchange fan 20 and the first rotor 21b, and the second part 221 is arranged outside the first rotor 21b.

[0088] By setting the first buffer 22 as the first part 220 and the second part 221, the first part 220 is arranged to extend along the axial direction X of the first rotor 21b, which can make the heat exchange fan 20 and the first stator 21a have a certain safety distance while achieving the connection with the heat exchange fan 20 and the first rotor 21b, so as to avoid the heat exchange fan 20 and the first stator 21a from being damaged due to the collision between the heat exchange fan 20 and the first stator 21a during the rotation of the heat exchange fan 20. By sleeving the second part 221 on the outside of the first rotor 21b, on the one hand, the setting of the second part 221 can increase the overall length of the first buffer 22 in the axial direction X of the first rotor 21b, that is, the contact area between the first buffer 22 and the first rotor 21b can be increased, so as to improve the damping effect of the first buffer 22 on the first rotor 21b and the heat exchange fan 20. On the other hand, such a structure design can improve the torsional resistance of the first buffer 22 and reduce the damage of the first buffer 22 during the rotation of the first rotor 21b. On the other hand, since the inside of the first rotor 21b and the first stator 21a are magnetically matched, such a setting will not affect the magnetic matching between the first rotor 21b and the first stator 21a, and also facilitates the assembly of the first buffer 22 and the first rotor 21b.

[0089] It can be understood that the "outside" in the present application refers to the side of the component relatively far away from the central axis of the first rotor 21b in the radial direction of the first rotor 21b, and the "inside" in the present application refers to the side of the component relatively close to the central axis of the first rotor 21b in the radial direction of the first rotor 21b.

[0090] In some embodiments, the heat exchange fan 20 comprises a mounting piece 20a and a plurality of fan blades 20b, the plurality of fan blades 20b are mounted to the mounting piece 20a, the side of the mounting piece 20a away from the fan blades 20b forms a first mounting groove 203, and the first part 220 is arranged in the first mounting groove 203.

[0091] The mounting piece 20a is used for mounting the plurality of fan blades 20b, the side of the mounting piece 20a away from the fan blades 20b forms the first mounting groove 203, which can facilitate the assembly of the first buffer 22 and the first part 220 of the mounting piece 20a, and also can limit the first buffer 22.

[0092] Optionally, the mounting piece 20a can be a plate structure or a bracket structure, which can be selected according to actual conditions, and is not limited in the embodiment.

[0093] In some embodiments, the mounting member 20a comprises a first plate portion 200, a first enclosing portion 201 and a second enclosing portion 202. The first plate portion 200 comprises a first side 2000 and a second side 2001 opposite to each other in the axial direction X of the first rotor 21b, and the plurality of vanes 20b are mounted to the first side 2000. The first enclosing portion 201 and the second enclosing portion 202 are protruded from the second side 2001 in the axial direction X of the first rotor 21b. The first enclosing portion 201 and the second enclosing portion 202 are arranged in a circumferential direction of the first rotor 21b, and the second enclosing portion 202 is located in the first enclosing portion 201 to form a first mounting groove 203 between the first enclosing portion 201 and the second enclosing portion 202. In other words, the first mounting groove 203 is configured as an annular groove.

[0094] The first side 2000 of the first plate portion 200 can be used to mount the plurality of vanes 20b, and the second side 2001 of the first plate portion 200 can be used to mount the first portion 220 of the first buffer member 22. By providing the first enclosing portion 201 and the second enclosing portion 202 on the first plate portion 200, the first mounting groove 203 can be formed between the first enclosing portion 201 and the second enclosing portion 202 for mounting the first portion 220 of the first buffer member 22. In addition, the first enclosing portion 201 and the second enclosing portion 202 can limit the position of the first portion 220 relative to the first plate portion 200 in the radial direction of the first rotor 21b, thereby reducing the risk of the first buffer member 22 being detached from the mounting member 20a in the radial direction of the first rotor 21b.

[0095] Optionally, the first enclosing portion 201 and the second enclosing portion 202 are annular protrusions or annular protrusions protruding from the second side 2001.

[0096] It can be understood that the protrusion heights of the first enclosing portion 201 and the second enclosing portion 202 on the second side 2001 can be the same or different. For example, the first enclosing portion 201 can protrude more than the second enclosing portion 202, or the second enclosing portion 202 can protrude more than the first enclosing portion 201. The specific configuration can be set according to actual conditions, and the present embodiment does not make specific limitations in this regard.

[0097] Please refer to Figures 5 to 10In some embodiments, the outer side of the first portion 220 is provided with a first limiting portion 2200, the first enclosing portion 201 is provided with a second limiting portion 2010, the first limiting portion 2200 is snap-connected to the second limiting portion 2010 to limit the position of the first portion 220 relative to the first enclosing portion 201 along the axial direction X of the first rotor 21b, one of the first limiting portion 2200 and the second limiting portion 2010 is a protrusion, and the other is a recess; and / or, the inner side of the first portion 220 is provided with a third limiting portion 2201, the second enclosing portion 202 is provided with a fourth limiting portion 2020, the third limiting portion 2201 is snap-connected to the fourth limiting portion 2020 to limit the position of the first portion 220 relative to the second enclosing portion 202 along the axial direction X of the first rotor 21b, one of the third limiting portion 2201 and the fourth limiting portion 2020 is a protrusion, and the other is a recess.

[0098] In an example, the outer side of the first portion 220 is provided with a first limiting portion 2200, the first enclosing portion 201 is provided with a second limiting portion 2010, the first limiting portion 2200 is snap-connected to the second limiting portion 2010 to limit the position of the first portion 220 relative to the first enclosing portion 201 along the axial direction X of the first rotor 21b, one of the first limiting portion 2200 and the second limiting portion 2010 is a protrusion, and the other is a recess. For example, the first limiting portion 2200 is a protrusion, and the second limiting portion 2010 is a recess, or the first limiting portion 2200 is a recess, and the second limiting portion 2010 is a protrusion.

[0099] In this way, through the snap-connection of the first limiting portion 2200 and the second limiting portion 2010, the position of the first portion 220 relative to the first enclosing portion 201 along the axial direction X of the first rotor 21b can be limited, and the risk of the first buffer 22 being detached from the mounting 20a along the axial direction X of the first rotor 21b can be reduced.

[0100] In another example, the inner side of the first portion 220 is provided with a third limiting portion 2201, the second enclosing portion 202 is provided with a fourth limiting portion 2020, the third limiting portion 2201 is snap-connected to the fourth limiting portion 2020 to limit the position of the first portion 220 relative to the second enclosing portion 202 along the axial direction X of the first rotor 21b, one of the third limiting portion 2201 and the fourth limiting portion 2020 is a protrusion, and the other is a recess. For example, the third limiting portion 2201 is a protrusion, and the fourth limiting portion 2020 is a recess, or the third limiting portion 2201 is a recess, and the fourth limiting portion 2020 is a protrusion.

[0101] In this way, by the engagement connection of the third limiting part 2201 and the fourth limiting part 2020, the position of the first part 220 relative to the second enclosing part 202 in the axial direction X of the first rotor 21b can be limited, and the risk of the first buffer 22 being detached from the mounting piece 20a in the axial direction X of the first rotor 21b can be reduced.

[0102] In another example, the outer side of the first part 220 is provided with a first limiting part 2200, the first enclosing part 201 is provided with a second limiting part 2010, the first limiting part 2200 is engaged and connected to the second limiting part 2010 to limit the position of the first part 220 relative to the first enclosing part 201 in the axial direction X of the first rotor 21b, one of the first limiting part 2200 and the second limiting part 2010 is a protrusion, and the other is a recess, the inner side of the first part 220 is provided with a third limiting part 2201, the second enclosing part 202 is provided with a fourth limiting part 2020, the third limiting part 2201 is engaged and connected to the fourth limiting part 2020 to limit the position of the first part 220 relative to the second enclosing part 202 in the axial direction X of the first rotor 21b, one of the third limiting part 2201 and the fourth limiting part 2020 is a protrusion, and the other is a recess.

[0103] In this way, by the engagement connection of the first limiting part 2200 and the second limiting part 2010, and by the engagement connection of the third limiting part 2201 and the fourth limiting part 2020, the outer side and the inner side of the first part 220 are engaged and matched with the first enclosing part 201 and the second enclosing part 202 respectively, the position of the first part 220 relative to the first enclosing part 201 and the second enclosing part 202 in the axial direction X of the first rotor 21b can be better limited, and the risk of the first buffer 22 being detached from the mounting piece 20a in the axial direction X of the first rotor 21b can be better reduced.

[0104] Optionally, the protrusion and the recess can be arranged around in the circumferential direction of the first rotor 21b, that is, the protrusion is an annular protrusion, and the recess is an annular recess, or the number of the protrusions and the recesses can be multiple, and the multiple protrusions and recesses are arranged at intervals in the circumferential direction of the first rotor 21b, which can be selected according to actual conditions, and is not limited in the embodiment.

[0105] Please refer to Figure 10 In some embodiments, the size of the protrusion and the recess in the radial direction of the first rotor 21b is R, and the size R satisfies: R≥5mm, and / or R≤8mm.

[0106] In an example, the size R satisfies: R≥5mm.

[0107] In this way, the protrusion can have certain structural strength, the service life of the first buffer 22 can be improved, the cooperation reliability of the protrusion and the recess can be ensured, and the risk that the first buffer 22 is detached from the mounting 20a in the axial direction X of the first rotor 21b can be reduced.

[0108] In another example, the size R satisfies: R≤8mm.

[0109] In this way, the size of the recess can be prevented from being too large to affect the structural strength of the first buffer 22 or the mounting 20a.

[0110] In another example, the size R satisfies: 5mm≤R≤8mm. Exemplarily, the size L can be 5mm, 6mm, 7mm or 8mm, etc.

[0111] In this way, on the one hand, the protrusion can have certain structural strength, the service life of the first buffer 22 can be improved, the cooperation reliability of the protrusion and the recess can be ensured, and the risk that the first buffer 22 is detached from the mounting 20a in the axial direction X of the first rotor 21b can be reduced. On the other hand, the size of the recess can be prevented from being too large to affect the structural strength of the first buffer 22 or the mounting 20a.

[0112] It can be understood that the above limitations on the protrusion and the recess are applicable to the protrusion and the recess in the present application, that is, applicable to the first limiting portion 2200, the second limiting portion 2010, the third limiting portion 2201 and the fourth limiting portion 2020 being protrusions or recesses.

[0113] In some embodiments, the inner side of the first portion 220 is provided with a first recess 2202, the second enclosing portion 202 is connected to the side wall surface and the bottom surface of the first recess 2202, the third limiting portion 2201 is a recess, and the third limiting portion 2201 is arranged on the side wall surface of the first recess 2202.

[0114] Through the connection and cooperation of the first recess 2202 and the second enclosing portion 202, on the one hand, the positioning and assembly of the first portion 220 of the first buffer 22 and the mounting 20a can be facilitated, and on the other hand, the position of the first portion 220 relative to the mounting 20a in the axial direction X of the first rotor 21b and in the radial direction of the first rotor 21b can be limited.

[0115] In some embodiments, the bottom surface of the first recess 2202 is provided with a first clamping portion 2203 extending in the axial direction X of the first rotor 21b, the second enclosing portion 202 is provided with a second clamping portion 2021 extending in the axial direction X of the first rotor 21b, and the first clamping portion is clamped and connected to the second clamping portion 2021 to fix the first portion 220 and the second enclosing portion 202 in the circumferential direction of the first rotor 21b.

[0116] Through the clamping connection of the first clamping portion 2203 and the second clamping portion 2021, the position of the first portion 220 relative to the mounting member 20a in the circumferential direction of the first rotor 21b can be limited, so that when the first rotor 21b drives the first buffer member 22 to rotate, the first buffer member 22 can better transmit the power in the circumferential direction of the first rotor 21b to the mounting member 20a, thereby better driving the mounting member 20a to rotate.

[0117] Alternatively, the first clamping portion 2203 can be a protrusion, and the second clamping portion 2021 can be a groove, or the first clamping portion 2203 can be a groove, and the second clamping portion 2021 can be a protrusion. The specific choice can be made according to the actual situation, which is not limited in the embodiment. When the first clamping portion 2203 is a protrusion and the second clamping portion 2021 is a groove, the first clamping portion 2203 can effectively utilize the space of the first groove 2202 for setting, and at the same time, it is beneficial to improve the structural strength of the first buffer member 22.

[0118] Alternatively, the number of the first clamping portion 2203 and the second clamping portion 2021 can be one or more, which can be selected according to the actual situation, which is not limited in the embodiment. When the number of the first clamping portion 2203 and the second clamping portion 2021 is multiple, multiple first clamping portions 2203 and multiple second clamping portions 2021 are arranged in the circumferential direction of the first rotor 21b. For example, the number of the first clamping portion 2203 and the second clamping portion 2021 is four, and four first clamping portions 2203 and four second clamping portions 2021 are evenly spaced in the circumferential direction of the first rotor 21b.

[0119] Please refer to Figure 12 In some embodiments, the size of the first clamping portion 2203 and the second clamping portion 2021 in the circumferential direction of the first rotor 21b is L, and the size L satisfies: L≥10mm, and / or L≤15mm.

[0120] In an example, the size L satisfies: L≥10mm.

[0121] In this way, it can be ensured that the protrusion has a certain structural strength and has sufficient torsional resistance, thereby reducing the occurrence of fracture during the rotation of the first buffer member 22 driving the mounting member 20a.

[0122] In another example, the size L satisfies: L≤15mm.

[0123] In this way, it can be avoided that the size of the groove is too large to affect the structural strength of the first buffer member 22 or the second enclosing portion 202 of the mounting member 20a.

[0124] In another example, the dimension L satisfies: 10mm≤L≤15mm. Exemplarily, the dimension L can be 10mm, 12mm, 13mm or 15mm, etc.

[0125] In this way, on the one hand, the protrusion has a certain structural strength, and the protrusion has sufficient torsional resistance, so as to reduce the risk of breakage of the first buffer 22 during rotation of the mounting member 20a. On the other hand, the size of the groove is not too large, so as to affect the structural strength of the first buffer 22 or the second enclosing portion 202 of the mounting member 20a.

[0126] Please refer to Figure 5 、 Figures 8 to 14 In some embodiments, the first rotor 21b includes a second plate portion 210, a third enclosing portion 211, and a fourth enclosing portion 212. The third enclosing portion 211 and the fourth enclosing portion 212 are protruded from one side of the second plate portion 210 along the axial direction X of the first rotor 21b. The third enclosing portion 211 and the fourth enclosing portion 212 are arranged in a circumferential direction of the first rotor 21b, and the fourth enclosing portion 212 is located in the third enclosing portion 211 to form a second mounting groove 213 therebetween. The second portion 221 is sleeved outside the fourth enclosing portion 212 and arranged in the second mounting groove 213.

[0127] The second plate portion 210 is used to carry the third enclosing portion 211 and the fourth enclosing portion 212. The fourth enclosing portion 212 is a main part of the magnetic cooperation between the first rotor 21b and the first stator 21a. The second mounting groove 213 is formed between the third enclosing portion 211 and the fourth enclosing portion 212 for mounting the second portion 221 of the first buffer 22. The third enclosing portion 211 and the fourth enclosing portion 212 can limit the position of the second portion 221 relative to the second plate portion 210 in the radial direction of the first rotor 21b, thereby reducing the risk of the first buffer 22 being detached from the first rotor 21b in the radial direction of the first rotor 21b.

[0128] Optionally, the third enclosing portion 211 and the fourth enclosing portion 212 are annular protrusions or annular protrusions protruding from the second plate portion 210.

[0129] It can be understood that the protrusion heights of the third enclosing portion 211 and the fourth enclosing portion 212 on the second plate portion 210 can be the same or different. For example, the third enclosing portion 211 protrudes more than the fourth enclosing portion 212, or the fourth enclosing portion 212 protrudes more than the third enclosing portion 211. The specific configuration can be set according to the actual situation, and the present embodiment does not make specific limitation thereto.

[0130] In some embodiments, the outer side of the second portion 221 is provided with a fifth limiting portion 2210, the third enclosing portion 211 is provided with a sixth limiting portion 2110, the fifth limiting portion 2210 is snap-connected to the sixth limiting portion 2110 to limit the position of the second portion 221 relative to the third enclosing portion 211 along the axial direction X of the first rotor 21b, one of the fifth limiting portion 2210 and the sixth limiting portion 2110 is a protrusion, and the other is a recess; and / or, the inner side of the second portion 221 is provided with a seventh limiting portion 2211, the fourth enclosing portion 212 is provided with an eighth limiting portion 2120, the seventh limiting portion 2211 is snap-connected to the eighth limiting portion 2120 to limit the position of the second portion 221 relative to the fourth enclosing portion 212 along the axial direction X of the first rotor 21b, one of the seventh limiting portion 2211 and the eighth limiting portion 2120 is a protrusion, and the other is a recess.

[0131] In one example, the outer side of the second portion 221 is provided with a fifth limiting portion 2210, the third enclosing portion 211 is provided with a sixth limiting portion 2110, the fifth limiting portion 2210 is snap-connected to the sixth limiting portion 2110 to limit the position of the second portion 221 relative to the third enclosing portion 211 along the axial direction X of the first rotor 21b, one of the fifth limiting portion 2210 and the sixth limiting portion 2110 is a protrusion, and the other is a recess.

[0132] In this way, through the snap-connection of the fifth limiting portion 2210 and the sixth limiting portion 2110, the position of the second portion 221 relative to the third enclosing portion 211 along the axial direction X of the first rotor 21b can be limited, and the risk of the first buffer 22 being detached from the first rotor 21b along the axial direction X of the first rotor 21b can be reduced.

[0133] In another example, the inner side of the second portion 221 is provided with a seventh limiting portion 2211, the fourth enclosing portion 212 is provided with an eighth limiting portion 2120, the seventh limiting portion 2211 is snap-connected to the eighth limiting portion 2120 to limit the position of the second portion 221 relative to the fourth enclosing portion 212 along the axial direction X of the first rotor 21b, one of the seventh limiting portion 2211 and the eighth limiting portion 2120 is a protrusion, and the other is a recess.

[0134] In this way, through the snap-connection of the seventh limiting portion 2211 and the eighth limiting portion 2120, the position of the second portion 221 relative to the fourth enclosing portion 212 along the axial direction X of the first rotor 21b can be limited, and the risk of the first buffer 22 being detached from the first rotor 21b along the axial direction X of the first rotor 21b can be reduced.

[0135] In another example, the outer side of the second portion 221 is provided with a fifth limiting part 2210, the third enclosing part 211 is provided with a sixth limiting part 2110, the fifth limiting part 2210 is snap-connected to the sixth limiting part 2110 to limit the position of the second portion 221 relative to the third enclosing part 211 along the axial direction X of the first rotor 21b, one of the fifth limiting part 2210 and the sixth limiting part 2110 is a protrusion, and the other is a recess, the inner side of the second portion 221 is provided with a seventh limiting part 2211, the fourth enclosing part 212 is provided with an eighth limiting part 2120, the seventh limiting part 2211 is snap-connected to the eighth limiting part 2120 to limit the position of the second portion 221 relative to the fourth enclosing part 212 along the axial direction X of the first rotor 21b, one of the seventh limiting part 2211 and the eighth limiting part 2120 is a protrusion, and the other is a recess.

[0136] In this way, through the snap-connection of the fifth limiting part 2210 and the sixth limiting part 2110, and through the snap-connection of the seventh limiting part 2211 and the eighth limiting part 2120, the outer side and the inner side of the second portion 221 are snap-fitted with the third enclosing part 211 and the fourth enclosing part 212 respectively, which can better limit the position of the second portion 221 relative to the third enclosing part 211 and the fourth enclosing part 212 along the axial direction X of the first rotor 21b, and better reduce the risk of the first buffer 22 being detached from the first rotor 21b along the axial direction X of the first rotor 21b.

[0137] It can be understood that the aforementioned limitation of the protrusion and the recess also applies to the fifth limiting part 2210, the sixth limiting part 2110, the seventh limiting part 2211, and the eighth limiting part 2120 being protrusions or recesses.

[0138] It can be understood that, in order to limit the position of the second portion 221 of the first buffer 22 relative to the first rotor 21b along the axial direction X of the first rotor 21b, the structure design for limiting the position of the first portion 220 of the first buffer 22 relative to the mounting member 20a along the axial direction X of the first rotor 21b can be referred to, for example, a third snap part can be provided on the second portion 221, a fourth snap part can be provided on the first rotor 21b, and the position of the second portion 221 of the first buffer 22 relative to the first rotor 21b along the axial direction X of the first rotor 21b can be limited through the snap-connection of the third snap part and the fourth snap part.

[0139] Please refer to Figure 5 In some embodiments, in the radial direction of the first rotor 21b, the first buffer 22 is flush with the inner side of the first rotor 21b. In this embodiment, the first buffer 22 is flush with the inner side of the fourth enclosing part 212 of the first rotor 21b, and the first buffer 22 is also flush with the inner side of the second enclosing part 202.

[0140] In this way, the first buffer 22, the fourth enclosing portion 212 of the first rotor 21b, and the second enclosing portion 202 of the mounting member 20a are all provided with a certain safety distance from the first stator 21a in the radial direction of the first rotor 21b, so that the first buffer 22, the first rotor 21b, and the mounting member 20a are prevented from colliding with the first stator 21a during rotation, thereby preventing damage to the first buffer 22, the first rotor 21b, the mounting member 20a, and the first stator 21a.

[0141] Please refer to Figure 1 and Figure 2 The second aspect of the embodiments of the present application discloses an air conditioner, which comprises an indoor unit 1 and an outdoor unit (not shown).

[0142] Specifically, the indoor unit 1 comprises a casing 10, an indoor heat exchanger 11, a heat exchange fan 2, and a fresh air fan (not shown). The casing 10 has an accommodating cavity 100 formed therein. The casing 10 has a heat exchange air outlet 101 and a fresh air outlet. The heat exchange air outlet 101 and the fresh air outlet are both communicated with the accommodating cavity 100. The indoor heat exchanger 11 is arranged in the accommodating cavity 100 and is used for exchanging heat with indoor air entering the casing 10. The heat exchange fan 2 is arranged in the accommodating cavity 100 and is located in front of the indoor heat exchanger 11. The fresh air fan is arranged in the accommodating cavity 100.

[0143] The accommodating cavity 100 of the casing 10 is used for accommodating the indoor heat exchanger 11, the heat exchange fan 2, and the fresh air fan. The casing 10 has the heat exchange air outlet 101 and the fresh air outlet. Under the driving of the heat exchange fan 2, indoor air can flow out of the heat exchange air outlet 101 after being exchanged with the indoor heat exchanger 11 in the accommodating cavity 100. Under the driving of the fresh air fan, fresh air can flow out of the fresh air outlet.

[0144] In some embodiments, the fresh air fan comprises a fresh air fan, a second driving motor, and a second buffer. The second driving motor comprises a second stator and a second rotor. The second rotor is rotatably sleeved on the outer periphery of the second stator. The fresh air fan is located on one side of the second rotor in the axial direction. The second rotor is used for driving the fresh air fan to rotate. The second buffer is connected with the fresh air fan and the second rotor, so that the second buffer is at least partially located between the fresh air fan and the second rotor in the axial direction of the second rotor.

[0145] The air conditioner of the second aspect of the application, under the action of the second stator, the second rotor can rotate relative to the second stator around the axial direction of itself, so that the second rotor can drive the fresh air fan to rotate, so that the fresh air fan discharges fresh air from the fresh air outlet. In addition, by arranging the second buffer, the second buffer can realize the transmission of the power for rotating the second rotor to the fresh air fan, and at the same time, can play a damping role between the second rotor and the fresh air fan, so as to reduce the noise generated when the fresh air fan works, and improve the user experience.

[0146] Optionally, the material of the second buffer can be rubber or silicone, etc., which can be selected according to actual conditions, and is not limited in the embodiment.

[0147] Optionally, the second buffer can be a ring structure or a plate structure, etc., which can be selected according to actual conditions.

[0148] The design of the fresh air fan of the second aspect of the embodiment of the application can refer to the design of the heat exchange fan of the first aspect of the embodiment of the application, which is not described here.

[0149] The air conditioner disclosed in the embodiments of the application is described in detail above, and the principle and implementation mode of the application are described by applying specific examples in this paper. The above embodiment is only used to help understand the core idea of the air conditioner of the application; at the same time, for those skilled in the art, according to the idea of the application, the specific implementation mode and application range will be changed, and the above embodiment should not be understood as a limitation of the application.

Claims

1. An air conditioner characterized by comprising: The application relates to an air conditioner, comprising: an indoor unit; the indoor unit comprises: a casing, a containing cavity is formed in the casing, the casing is provided with a heat exchange air outlet communicating with the containing cavity; an indoor heat exchanger arranged in the containing cavity, the indoor heat exchanger is used for heat exchange with indoor air entering the casing; and a heat exchange fan arranged in the containing cavity and located at the leeward side of the indoor heat exchanger; wherein the heat exchange fan comprises: a heat exchange fan; a first driving motor comprising a first stator and a first rotor, the first rotor is rotatably sleeved on the outer periphery of the first stator, the heat exchange fan is located on one side of the first rotor in the axial direction, and the first rotor is used for driving the heat exchange fan to rotate; and a first buffer connected with the heat exchange fan and the first rotor, so that the first buffer is at least partially located between the heat exchange fan and the first rotor in the axial direction of the first rotor.

2. The air conditioner according to claim 1, wherein The first buffer comprises a first part and a second part connected with each other in the axial direction of the first rotor, the first part is arranged in extension in the axial direction of the first rotor to be connected with the heat exchange fan and the first rotor, and the second part is sleeved on the outer side of the first rotor.

3. The air conditioner according to claim 2, wherein The heat exchange fan comprises a mounting part and a plurality of fan blades, the plurality of fan blades are mounted on the mounting part, a first mounting groove is formed on the side of the mounting part away from the fan blades, and the first part is arranged in the first mounting groove.

4. The air conditioner according to claim 3, wherein The mounting part comprises a first plate part, a first enclosing part and a second enclosing part, the first plate part comprises opposite first and second sides in the axial direction of the first rotor, the plurality of fan blades are mounted on the first side, the first and second enclosing parts are arranged in protrusion from the second side in the axial direction of the first rotor, the first and second enclosing parts are arranged in a ring shape in the circumferential direction of the first rotor, and the first enclosing part is spaced and arranged in a ring shape on the outer periphery of the first enclosing part, so that the first and second enclosing parts form the first mounting groove.

5. The air conditioner according to claim 4, wherein The outer side of the first part is provided with a first limiting part, the first enclosing part is provided with a second limiting part, the first limiting part is snap-connected with the second limiting part to limit the position of the first part relative to the first enclosing part in the axial direction of the first rotor, and one of the first and second limiting parts is protruding and the other is recessed; and / or, the inner side of the first part is provided with a third limiting part, the second enclosing part is provided with a fourth limiting part, the third limiting part is snap-connected with the fourth limiting part to limit the position of the first part relative to the second enclosing part in the axial direction of the first rotor, and one of the third and fourth limiting parts is protruding and the other is recessed.

6. The air conditioner according to claim 5, wherein The inner side of the first part is provided with a first groove, the second enclosing part is connected with the side wall surface and the bottom surface of the first groove, the third limiting part is recessed, and the third limiting part is arranged on the side wall surface of the first groove. The bottom surface of the first groove is provided with a first clamping part extending along the axial direction of the first rotor, and the second enclosing part is provided with a second clamping part extending along the axial direction of the first rotor, the first clamping part is clamped and connected to the second clamping part to fix the first part and the second enclosing part along the circumferential direction of the first rotor.

7. The air conditioner according to claim 6, wherein The size of the first clamping part in the circumferential direction of the first rotor is L, and the size L satisfies: L≥10mm, and / or, L≤15mm.

8. The air conditioner according to claim 2, wherein The first rotor comprises a second plate part, a third enclosing part and a fourth enclosing part, the third enclosing part and the fourth enclosing part are protruded from one side of the second plate part in the axial direction of the first rotor along the axial direction of the first rotor, the third enclosing part and the fourth enclosing part are arranged around along the circumferential direction of the first rotor, and the fourth enclosing part is located in the third enclosing part to form a second installation groove between the third enclosing part and the fourth enclosing part, the second part is sleeved outside the fourth enclosing part and arranged in the second installation groove.

9. The air conditioner according to claim 8, wherein The outer side of the second part is provided with a fifth limiting part, the third enclosing part is provided with a sixth limiting part, the fifth limiting part is clamped and connected to the sixth limiting part to limit the position of the second part relative to the third enclosing part along the axial direction of the first rotor, one of the fifth limiting part and the sixth limiting part is protruding, and the other is recessed. And / or, the inner side of the second part is provided with a seventh limiting part, the fourth enclosing part is provided with an eighth limiting part, the seventh limiting part is clamped and connected to the eighth limiting part to limit the position of the second part relative to the fourth enclosing part along the axial direction of the first rotor, one of the seventh limiting part and the eighth limiting part is protruding, and the other is recessed.

10. The air conditioner according to any one of claims 1 to 9, characterized by In the radial direction of the first rotor, the first buffer is arranged flush with the inner side of the first rotor.

11. An air conditioner characterized by comprising: Comprise: Indoor unit; The indoor unit comprises: A cabinet, a receiving cavity is formed in the cabinet, the cabinet has a heat exchange air outlet and a fresh air outlet, the heat exchange air outlet and the fresh air outlet are communicated with the receiving cavity; An indoor heat exchanger is arranged in the receiving cavity, and the indoor heat exchanger is used for heat exchange with indoor air entering the cabinet; A heat exchange fan is arranged in the receiving cavity and located at the leeward side of the indoor heat exchanger; A fresh air fan is arranged in the receiving cavity; The fresh air fan comprises: A fresh air fan; A second driving motor comprising a second stator and a second rotor, the second rotor is rotatably sleeved on the outer periphery of the second stator, the fresh air fan is located on one side of the second rotor in the axial direction, and the second rotor is used to drive the fresh air fan to rotate; A second buffer connected with the fresh air fan and the second rotor, so that the second buffer is at least partially located between the fresh air fan and the second rotor in the axial direction of the second rotor.

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