An air conditioner

Abstract

The present invention provides an air conditioner, specifically relating to the technical field of air conditioners. The air conditioner of the present invention comprises a motor body, a motor shaft, a transmission belt and at least two transmission wheels, wherein the transmission wheel is rotatably connected to the motor body, and the motor shaft is drivingly connected to one of the transmission wheels; the transmission wheel is connected by the transmission belt, and the transmission wheel is tensionedly matched with the inner surface of the transmission belt. Therefore, by arranging a transmission belt transmission mechanism on the motor body, and drivingly connecting the motor shaft with the transmission wheel, the motor shaft drives the transmission belt to move, thereby realizing the output of motion. The transmission of motion through the transmission belt avoids the connection between the motor shaft and the fan in the axial direction, and there is no coaxiality requirement for the cooperation between the motor and the fan.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to an air conditioner. Background Art

[0002] An air conditioner is usually provided with a crossflow fan for blowing air. The crossflow fan is driven by a motor. The output shaft of the motor usually needs to be coaxial with the crossflow fan. The connection between the output shaft of the motor and the crossflow fan has high requirements for coaxiality, otherwise the crossflow fan is prone to make abnormal noises during operation. Summary of the invention

[0003] The present invention aims to solve the technical problem of high matching accuracy between the motor shaft and the crossflow fan in the prior art to a certain extent.

[0004] In order to solve the above problems, the present invention provides an air conditioner, including a motor assembly, wherein the motor assembly includes a motor body, a transmission belt and at least two transmission wheels, and the transmission wheels are rotatably connected to the motor body; the transmission wheels are connected through the transmission belt, the transmission wheels are tensioned with the inner surface of the transmission belt, and the motor body is suitable for driving the transmission wheels to rotate.

[0005] Therefore, by arranging a transmission belt and a transmission wheel on the motor body to form a belt transmission mechanism, the shaft output of the motor is converted into a belt transmission output, thereby reducing the connection accuracy requirement of the motor shaft output end and avoiding the problem of too high installation accuracy requirement of the motor shaft. The transmission of motion through the transmission belt avoids the connection between the motor shaft and the fan in the axial direction, and there is no coaxiality requirement for the cooperation between the motor shaft and the fan.

[0006] Optionally, it further includes at least one transmission shaft, which is rotatably connected to the motor body, wherein one of the transmission wheels is connected to the motor shaft of the motor body, and the remaining transmission wheels are respectively connected to the transmission shaft.

[0007] Optionally, at least two transmission shafts are further included, all of which are suitable for being arranged around the motor shaft of the motor body, the motor shaft drives one of the transmission shafts to rotate, the transmission shaft is rotatably connected to the motor body, and the transmission wheels are respectively connected to the transmission shafts.

[0008] Therefore, by setting up multiple transmission shafts, the area of ​​the transmission belt enclosed region can be increased, and the adjustable space for connecting the fan assembly and the transmission belt can be increased. When the fan assembly cooperates with the outer surface of the transmission belt, the probability of the transmission belt self-interference caused by the area of ​​the transmission belt enclosed region being too small can be reduced.

[0009] Optionally, it further includes a first gear and a second gear; the first gear is connected to the motor shaft, the second gear is connected to one of the transmission shafts, and the first gear and the second gear are meshed.

[0010] Thus, the eccentric output of the transmission shaft is realized through the gear assembly, which can increase the length of the transmission belt and avoid the motor shaft directly driving the transmission wheel, causing the transmission belt to be set on one side of the motor, resulting in an unbalanced force on the motor itself. By the eccentric output of the transmission shaft, the motor shaft can be prevented from directly bearing the tension of the transmission belt.

[0011] Optionally, the diameter of the transmission wheel drivingly connected to the motor shaft is smaller than the diameter of the other transmission wheels.

[0012] Thus, the diameter of the driving wheel is smaller than that of the driven wheel, which can reduce the transmission ratio of the transmission belt, reduce the rotation speed of the driven wheel, and reduce the wear between the transmission shaft and the motor. In addition, the area of ​​the enclosed area of ​​the transmission belt can be increased, and the matching space between the transmission belt and the fan shaft can be increased.

[0013] Optionally, a protective cover is further included, which is detachably connected to the motor body, the protective cover is arranged outside the first gear and the second gear, and the transmission shaft extends out of the protective cover.

[0014] Therefore, by providing the protective cover, the first gear and the second gear can be hidden, thereby avoiding certain risks caused by exposure of the first gear and the second gear.

[0015] Optionally, an end surface of the motor shaft away from the motor body is not exposed to an end surface of the protective cover away from the motor body.

[0016] Thus, on the one hand, the motor shaft can be hidden to avoid unnecessary risks, and on the other hand, it can prevent the motor shaft from extending into the area surrounded by the transmission belt to interfere with the installation of the fan shaft.

[0017] Optionally, a limiting surface structure is provided on the protective cover, and the limiting surface structure is suitable for cooperating with a limiting structure on the base of the air conditioner to limit the circumferential rotation of the protective cover.

[0018] Therefore, the circumferential rotation of the motor body is limited by the limiting surface structure and the limiting structure.

[0019] Optionally, a fan assembly is also included, which includes a fan body, a fan shaft and a transmission pulley, the fan shaft is arranged at both axial ends of the fan body, the transmission pulley is connected to the fan shaft, and the transmission pulley is tensioned with the circumferential outer surface of the transmission belt of the air conditioner.

[0020] Thus, the motor drives the fan by means of a transmission belt, so that the motor shaft is prevented from being connected or limited with the fan shaft in the axial direction of the motor shaft. When the fan is disassembled and cleaned, the motor does not need to be disassembled, thereby reducing the disassembly and assembly process. In addition, the transmission pulley is tightly matched with the transmission belt, and the installation accuracy requirements of the motor and the fan are relatively low. Even when there is a large installation error between the motor and the fan, the transmission of the motor and the fan can be guaranteed.

[0021] Optionally, the transmission belt is a toothed belt, the transmission belt pulley is a toothed wheel, and the toothed belt is meshed with the toothed wheel.

[0022] Therefore, through the cooperation between the toothed belt and the toothed wheel, the drive belt drives the fan more accurately.

[0023] Optionally, the angles between the center of the drive pulley and the lines connecting the centers of the drive shafts of the two air conditioners are between 120 degrees and 180 degrees.

[0024] By limiting the angles between the center of the drive pulley and the lines connecting the centers of the drive shafts of the two air conditioners, it is avoided that the angle is too small to cause slippage between the drive belt and the drive pulley, thereby reducing the transmission efficiency.

[0025] Optionally, it further comprises an upper base and a lower base which are detachably connected, the fan assembly is mounted on the lower base, and the air conditioner is mounted on the upper base.

[0026] Thus, by installing the fan assembly on the lower base and installing the air conditioner on the upper base, when the fan body needs to be cleaned, the lower base can be directly disassembled, the drive pulley and the drive belt are automatically separated, and the upper base is still hung on the wall, which can also avoid disassembling the motor body, reducing the disassembly and assembly process and avoiding unnecessary trouble. When the drive belt drive method is adopted, when there is a large connection error between the upper base and the lower base, the motor shaft and the fan shaft can be effectively prevented from being connected on the same axis, ensuring the normal operation of the motor and the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is an exploded view of a motor assembly in an embodiment of the present invention;

[0028] Figure 2 is a schematic structural diagram of a motor assembly in an embodiment of the present invention;

[0029] Figure 3 is a partial view of a motor assembly in an embodiment of the present invention;

[0030] Figure 4 is a schematic diagram of an air conditioner in an embodiment of the present invention after the lower base is disassembled;

[0031] Figure 5 It is a schematic diagram of the coordination of the motor assembly and the fan assembly in an embodiment of the present invention;

[0032] Figure 6 For the present invention Figure 5 Partial view at A in the middle;

[0033] Figure 7 It is a schematic diagram of the cooperation among the drive pulley, the drive wheel and the drive belt in the embodiment of the present invention;

[0034] Figure 8 is an exploded view of the lower base and the fan assembly in an embodiment of the present invention;

[0035] Fig. 9 For the present invention Figure 8 Partial view at B in the middle;

[0036] Fig.10 For the present invention Figure 8 Partial view at center C;

[0037] Fig.11 is a schematic diagram of the cooperation between the upper base and the motor assembly in an embodiment of the present invention;

[0038] Fig.12 For the present invention Fig.11 Partial view at D in the middle;

[0039] Fig.13 is an exploded view of an upper base and a motor assembly in an embodiment of the present invention;

[0040] Fig.14 For the present invention Fig.13 Partial view at point E in the middle.

[0041] Marking Description:

[0042] 1-motor assembly, 2-upper base, 3-lower base, 4-fan assembly, 11-motor body, 12-motor shaft, 13-first gear, 14-transmission belt, 15-transmission shaft, 16-transmission wheel, 17-second gear, 18-protective cover, 19-bearing, 181-limiting surface structure, 21-motor accommodating part, 22-motor pressure cover, 221-limiting mouth structure, 31-jack structure, 41-fan body, 42-fan shaft, 43-bearing mounting seat, 431-buckle structure, 44-transmission pulley, 45-bearing seat pressure cover. DETAILED DESCRIPTION

[0043] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the description of this specification, the description with reference to the terms "embodiment", "one embodiment" and "one implementation" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or implementation are included in at least one embodiment or implementation of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or implementation. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or implementations in a suitable manner.

[0046] The terms "first" and "second" etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include at least one of the features.

[0047] An embodiment of the present invention provides an air conditioner, comprising a motor assembly 1, such as Figures 1 to 3 As shown, it includes a motor body 11, a transmission belt 14 and at least two transmission wheels 16. The transmission wheel 16 is rotatably connected to the motor body 11. The transmission wheel 16 is transmission-connected via the transmission belt 14. The transmission wheel 16 is tensionedly matched with the inner surface of the transmission belt 14. The motor body 11 is suitable for driving the transmission wheel 16 to rotate.

[0048] It should be noted that the transmission wheel 16 and the transmission belt 14 form a belt transmission mechanism, and the overall output of the motor assembly 1 is output through the transmission belt 14. The motor body 11 also includes a motor shaft 12. The rotation of the motor shaft 12 drives the transmission wheel 16 to rotate, thereby realizing the movement of the transmission belt 14.

[0049] In one embodiment, the motor assembly 1 further includes at least one transmission shaft 15, wherein the transmission shaft 15 is rotatably connected to the motor body 11, wherein one of the transmission wheels 16 is connected to the motor shaft 12, and the other transmission wheels 16 are respectively connected to the transmission shaft 15. The transmission wheel 16 is connected to the motor shaft 12 in one piece, by interference fit, or by a key. That is to say, at this time, the motor shaft 12 is directly connected to one of the transmission wheels 16, wherein one of the transmission wheels 16 is coaxial with the motor shaft 12, and the transmission wheel 16 is coaxial with the transmission shaft 15. Therefore, by directly connecting one of the transmission wheels 16 to the motor shaft 12, the motor shaft 12 directly drives the transmission wheel 16 to rotate, and the motor shaft 12 itself serves as a transmission shaft, which can reduce the installation of one transmission shaft 15 on the motor body 11.

[0050] In one embodiment, the motor assembly 1 further includes at least two transmission shafts 15, all of which are arranged around the motor shaft 12, the motor shaft 12 drives one of the transmission shafts 15 to rotate, the transmission shaft 15 is rotatably connected to the motor body 11, and the transmission wheels 16 are respectively connected to the transmission shafts 15. Here, there can be two, three or more transmission shafts 15, the motor shaft 12 can be connected to the transmission shaft 15 through a gear assembly, the motor shaft 12 drives the gear assembly to rotate, and then drives the transmission wheel 16 to move. Therefore, by setting a plurality of transmission shafts 15, the area of ​​the transmission belt enclosed area can be increased, and the adjustable space for the connection between the fan assembly and the transmission belt is increased. When the fan assembly cooperates with the outer surface of the transmission belt, the probability of the transmission belt self-interference caused by the area of ​​the transmission belt enclosed area being too small can be reduced.

[0051] Here, the axial end of the motor body 11 is provided with a structure suitable for installing the transmission shaft 15. For example, the transmission shaft 15 can be inserted into the motor body 11, and a limiting structure is provided on the transmission shaft 15 to cooperate with the end of the motor body 115 to limit the axial displacement of the transmission shaft 15. The transmission wheel 16 can be provided with an inner flat key, and the transmission shaft 15 is provided with an outer flat key. The transmission shaft 15 is inserted into the transmission wheel 16 to achieve the cooperation between the inner flat key and the outer flat key. Of course, the transmission wheel 16 and the transmission shaft 15 can be an integrally formed structure, a key connection or an interference fit connection.

[0052] The advantage of such a configuration is that by arranging a transmission belt 14 and a transmission wheel 16 on the motor body 11 to form a belt transmission mechanism, the shaft output of the motor is converted into a belt transmission output, thereby reducing the connection accuracy requirements of the motor shaft output end and avoiding the problem of too high installation accuracy requirements of the motor shaft. The transmission of motion through the transmission belt 14 avoids the connection between the motor shaft 12 and the fan in the axial direction, and there is no coaxiality requirement for the cooperation between the motor shaft 12 and the fan.

[0053] In this embodiment, if Figures 1 to 3 As shown, the motor assembly 1 further includes a first gear 13 and a second gear 17; the first gear 13 is connected to the motor shaft 12, the second gear 17 is connected to one of the transmission shafts 15, and the first gear 13 and the second gear 17 are meshed.

[0054] It should be noted that the first gear 13 and the motor shaft 12 can also be an integrally formed structure, and the second gear 17 and one of the transmission shafts 15 can also be an integrally formed structure. When the motor is running, the first gear 13 rotates with the motor shaft 12, and the first gear 13 drives the second gear 17 to rotate, and one of the transmission shafts 15 rotates synchronously with the second gear 17, thereby realizing the output of one of the transmission shafts 15, and the transmission wheel 16 rotates with the transmission shaft 15, thereby realizing the driving of the transmission belt 14.

[0055] The advantage of such a configuration is that the eccentric output of the transmission shaft 15 is realized through the gear assembly, which can increase the length of the transmission belt and avoid the motor shaft 12 directly driving the transmission wheel 16, which causes the transmission belt to be set on one side of the motor, resulting in an unbalanced force on the motor itself. By the eccentric output of the transmission shaft 15, the motor shaft can be prevented from directly bearing the tension of the transmission belt 14.

[0056] Preferably, if Figures 1 to 3As shown, there are two transmission shafts 15, and the transmission shafts 15 are symmetrically arranged about the axis of the motor shaft 12. That is to say, the two transmission shafts 15 are respectively located on both sides of the radial direction of the motor shaft 12, and when the transmission belt 14 is installed on the transmission wheel 16, the motor shaft 12 is located in the middle of the transmission belt 14. Therefore, through the symmetrical arrangement of the transmission shafts 15, the force of the transmission belt 14 on the motor can be uniformed, avoiding the motor deflection caused by the force on one side of the motor.

[0057] like Figure 7 As shown, the diameter of the transmission wheel 16 drivingly connected to the motor shaft 12 is smaller than the diameter of the other transmission wheels 16. Here, the motor drives one of the transmission shafts 15 through the first gear 13 and the second gear 17 to be drivingly connected. The transmission wheel 16 on the transmission shaft 15 is the driving wheel, and the driving wheel is the transmission wheel 16 drivingly connected to the motor shaft 12. The driven wheel refers to the other transmission wheels 16, that is, the diameter of the driving wheel is smaller than the diameter of the driven wheel. The advantage of this arrangement is that the diameter of the driving wheel is smaller than the diameter of the driven wheel, which can reduce the transmission ratio of the transmission belt 14, reduce the rotation speed of the driven wheel, and reduce the wear between the transmission shaft 15 and the motor. In addition, the area of ​​the enclosed area of ​​the transmission belt can be increased, and the matching space between the transmission belt 14 and the fan shaft 42 can be increased.

[0058] like Figures 1 to 3 As shown, the motor assembly 1 further includes a protective cover 18 , which is detachably connected to the motor body 11 , and the protective cover 18 is disposed outside the first gear 13 and the second gear 17 , and the transmission shaft 15 extends out of the protective cover 18 .

[0059] It should be noted that a hole is opened on the protective cover 18 for the transmission shaft 15 to extend out. The protective cover 18 has a space for accommodating the first gear 13 and the second gear 17, and can ensure that the first gear 13 and the second gear 17 can rotate freely. When the protective cover 18 is installed on the motor body 11, the transmission wheel 16 is located outside the protective cover 18.

[0060] Therefore, by providing the protective cover 18 , the first gear 13 and the second gear 17 can be hidden, thereby avoiding certain risks caused by exposure of the first gear 13 and the second gear 17 .

[0061] like Figure 3As shown, the end face of the motor shaft 12 away from the motor body 11 is not exposed to the end face of the protective cover 18 away from the motor body 11. It should be noted that the end face of the motor shaft 12 away from the motor body 11 can be hidden in the protective cover 18, or it can be flush with the end face of the protective cover 18 away from the motor body 11. On the one hand, the motor shaft 12 can be hidden to avoid unnecessary risks, and on the other hand, it can prevent the motor shaft 12 from extending into the area surrounded by the transmission belt 14, causing interference with the installation of the fan shaft 42.

[0062] like Figures 1 to 3 As shown, the motor assembly 1 also includes at least two bearings 19, which are sleeved on the transmission shaft 15, and the bearings 19 are respectively arranged on both axial sides of the second gear 17, and the axial ends of one of the bearings 19 are respectively in contact with the motor body 11 and the second gear 17, and the axial ends of one of the bearings 19 are respectively in contact with the second gear 17 and the protective cover 18. Therefore, through the cooperation between the protective cover 18 and the bearing 19, when the protective cover 18 is installed on the motor body 11, the protective cover 18 can press the second gear 17, thereby avoiding the jumping of the second gear 17. In addition, through the arrangement of the bearing 19, the wear between the second gear 17 and the motor body 11 can also be reduced.

[0063] This embodiment provides an air conditioner, comprising any of the above-mentioned motor assemblies. The air conditioner has the same beneficial effects as the motor assembly, which will not be described in detail here.

[0064] In the conventional technology, the crossflow fan and the motor are connected by means of a shaft hole. When the crossflow fan needs to be disassembled and cleaned, the motor and the crossflow fan need to be disassembled at the same time, causing unnecessary disassembly and assembly troubles.

[0065] like Figure 4 refer to Figure 6 As shown, the air conditioner described in this embodiment also includes a fan assembly 4, which includes a fan body 41, a fan shaft 42 and a transmission pulley 44, the fan shaft 42 is arranged at both axial ends of the fan body 41, the transmission pulley 44 is connected to the fan shaft 42, and the transmission pulley 44 is tensioned with the circumferential outer surface of the transmission belt 14 of the motor assembly 1.

[0066] It should be noted that the fan body 41 can be a cross-flow fan blade, and the transmission pulley 44 and the fan shaft 42 can also be connected in one piece. During installation, the fan body 41 can be placed on the base of the air conditioner, and then the fan shaft 42 can be fixed, and then the motor can be fixed on the base, and the transmission pulley 44 acts on the transmission belt 14, and the transmission pulley 44 is concave toward the area surrounded by the transmission belt 14, so that the transmission belt 14 and the transmission pulley 44 are in tension. When the motor is running, it drives the transmission belt 14 to rotate, and then drives the fan shaft 42 to rotate through the transmission belt 14, so as to drive the fan body 41. At this time, the fan body 41 and the motor shaft 12 are not connected in the axial direction.

[0067] The advantage of such a configuration is that the motor drives the fan by means of a transmission belt, which prevents the motor shaft 12 from being connected or limited with the fan shaft 42 in the axial direction of the motor shaft 12. When the fan is disassembled and cleaned, the motor does not need to be disassembled, thereby reducing the disassembly and assembly process. In addition, the transmission pulley 44 is tightly matched with the transmission belt 14, which has a low installation accuracy requirement for the motor and the fan, and can ensure the transmission of the motor and the fan even when there is a large installation error between the motor and the fan.

[0068] Preferably, if Figures 4 to 6 As shown, the transmission belt 14 is a toothed belt, the transmission belt wheel 44 is a toothed wheel, and the toothed belt meshes with the toothed wheel. Therefore, through the cooperation between the toothed belt and the toothed wheel, the transmission belt 14 drives the fan more accurately.

[0069] like Figure 7 As shown, the angle between the center of the drive pulley 44 and the line connecting the centers of the drive shafts 15 of the two motor assemblies is between 120 degrees and 180 degrees. The angle between the center of the drive pulley 44 and the line connecting the centers of the drive shafts 15 of the two motor assemblies can be 120 degrees, 135 degrees, 150 degrees or 180 degrees. By limiting the angle between the center of the drive pulley 44 and the line connecting the centers of the drive shafts 15 of the two motor assemblies, it is avoided that the angle is too small to cause slippage between the drive belt 14 and the drive pulley 44, resulting in reduced transmission efficiency.

[0070] like Figures 4 to 6 As shown, the air conditioner further includes an upper base 2 and a lower base 3 that are detachably connected, the fan assembly 4 is mounted on the lower base 3 , and the motor assembly 1 is mounted on the upper base 2 .

[0071] It should be noted that the upper base 2 and the lower base 3 can be fastened and connected by buckles or screws, the upper base 2 has a position for installing the motor body 11, and the lower base 3 has a space for accommodating the fan body 41. During installation, the motor body 11 is first fixed to the upper base 2 by a fixing structure, and then the fan body 41 is installed on the lower base 3, and then the transmission pulley 44 is acted on the transmission belt 14, and the transmission pulley 44 is concave to the area surrounded by the transmission belt 14, so that the transmission belt 14 and the transmission pulley 44 are tensioned and matched, and finally the lower base 3 is fixed to the upper base 2. During disassembly, the lower base 3 is directly separated from the upper base 2, and the fan body 41 can be directly taken out.

[0072] The advantage of such a configuration is that, by installing the fan assembly 4 on the lower base 3 and installing the motor assembly 1 on the upper base 2, when the fan body 41 needs to be cleaned, the lower base 3 can be directly disassembled, the transmission pulley 44 and the transmission belt 14 are automatically separated, and the upper base 2 is still hung on the wall, and the motor body 11 can be avoided from being disassembled, reducing the disassembly and assembly process and avoiding unnecessary trouble. In addition, since there is inevitably an error in the connection between the upper base 2 and the lower base 3, and the motor is installed on the upper base, it is inevitable that the coaxiality between the motor shaft 12 and the fan shaft 42 will be low, and the transmission belt drive method is adopted, when there is a large connection error between the upper base 2 and the lower base 3, the motor shaft 12 can be effectively avoided from being connected to the fan shaft 42 on the coaxial line, ensuring the normal operation between the motor and the fan.

[0073] like Figures 8 to 10 As shown, the air conditioner further includes a bearing (not shown in the figure) and a bearing mounting seat 43 for mounting the bearing, the fan shaft 42 is passed through the bearing, and the bearing mounting seat 43 is detachably connected to the lower base 3.

[0074] It should be noted that the bearing is used to cooperate with the fan shaft 42 to reduce the rotational friction between the fan shaft 42 and the bearing mounting seat 43. The bearing mounting seat 43 is provided with a bearing accommodating portion, and the bearing is embedded in the bearing accommodating portion. The bearing mounting seat 43 is provided with a buckle structure 431, and the lower base 3 is provided with a socket structure 31 that cooperates with the buckle structure 431. The buckle structure 431 is engaged with the socket structure 31. When installing, first install the bearing in the bearing accommodating portion, then pass the fan shaft 42 through the bearing, and finally install the crossflow fan blade together with the bearing mounting seat 43 on the lower base 3.

[0075] The advantage of such a configuration is that, by detachably connecting the bearing mounting seat 43 to the lower base 3 , the motor assembly 1 can be fixed while also being easy to disassemble and clean.

[0076] like Figures 8 to 10 As shown, the air conditioner further includes a bearing seat pressure cover 45, the bearing seat pressure cover 45, the bearing seat pressure cover 45, the bearing seat pressure cover 45 is covered on the bearing mounting seat 43, and the bearing seat pressure cover 45 is detachably connected to the lower base 3. The bearing seat pressure cover 45 can be connected to the lower base 3 by snapping or screwing, and the shape of one end of the bearing seat pressure cover 45 close to the bearing mounting seat 43 matches the profile of the bearing mounting seat 43. When the bearing seat pressure cover 45 is installed on the lower base 3, the bearing seat pressure cover 45 is further pressed on the bearing mounting seat 43, so that the bearing seat pressure cover 45 fits the bearing mounting seat 43, and at the same time, the bearing seat pressure cover 45 is connected to the lower base 3, so as to further reinforce the bearing mounting seat 43 and prevent the shaking of the bearing mounting seat 43.

[0077] like Figures 11 to 14 As shown, the air conditioner further includes a motor pressure cover 22, which is detachably connected to the upper base 2; a motor accommodating portion 21 is provided on the upper base 2, and the motor pressure cover 22 and the motor accommodating portion 21 together form a space for installing the motor body 11.

[0078] It should be noted that the motor gland 22 and the upper base 2 can be connected by screws or snaps. When the motor gland 22 and the motor accommodating portion 21 enclose the motor body 11, the motor shaft 12 is exposed from the motor accommodating portion 21. The motor accommodating portion 21 matches the circumferential contour of the motor body 11. The contour of the motor gland 22 close to one end of the motor body 11 also matches the circumferential contour of the motor body 11. When installing the air conditioner, first put the motor body 11 into the motor accommodating portion 21, and then press the motor gland 22 onto the motor body 11. By fixing the motor gland 22 to the upper base 2, the motor body 11 is fixed.

[0079] Therefore, by detachably connecting the motor cover 22 to the upper base 2, the motor body 11 can be installed on the upper base 2. When the fan is disassembled and cleaned, the motor assembly 1 can be fixed to the upper base 2 by the motor cover 22 to prevent the motor body 11 from falling.

[0080] like Figures 11 to 14As shown, the motor assembly 1 is applied to an air conditioner, and a limiting surface structure 181 is provided on the protective cover 18 . The limiting surface structure 181 is suitable for cooperating with a limiting structure on the base of the air conditioner to limit the circumferential rotation of the protective cover 18 .

[0081] In one embodiment, the air conditioner has only one base, and the limiting structure is provided on the base. In one embodiment, the air conditioner includes a detachable upper base 2 and a lower base 3, the motor is mounted on the lower base 3, and the limiting structure is provided on the lower base 3. In one embodiment, the air conditioner includes a detachable upper base 2 and a lower base 3, the motor is mounted on the upper base 2, the limiting structure is provided on the upper base 2, and a limiting opening structure 221 is provided on the motor gland 22, the limiting opening structure 221 and the limiting structure work together to limit the position of the protective cover 18, thereby limiting the circumferential rotation of the motor body 11.

[0082] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. An air conditioner, characterized in that: The motor assembly (1) comprises a motor body (11), a transmission belt (14) and at least two transmission wheels (16), wherein the transmission wheels (16) are rotatably connected to the motor body (11); the transmission wheels (16) are transmission-connected via the transmission belt (14), the transmission wheels (16) are in tight fit with the inner surface of the transmission belt (14), and the motor body (11) is suitable for driving the transmission wheels (16) to rotate; The motor assembly (4) further comprises a fan assembly (4), wherein the fan assembly (4) comprises a fan body (41), a fan shaft (42) and a transmission pulley (44), wherein the fan shaft (42) is arranged at two axial ends of the fan body (41), the transmission pulley (44) is connected to the fan shaft (42), and the transmission pulley (44) is tensionedly matched with the circumferential outer surface of the transmission belt (14) of the motor assembly, wherein the transmission belt (14) is a toothed belt, the transmission pulley (44) is a toothed wheel, and the toothed belt is meshed with the toothed wheel; The fan assembly (4) further comprises a lower base (3), wherein the fan assembly (4) comprises a bearing mounting seat (43), wherein a buckle structure (431) is provided on the bearing mounting seat (43), and wherein a socket structure (31) cooperating with the buckle structure (431) is provided on the lower base (3), wherein the buckle structure (431) is snap-fitted with the socket structure (31).

2. The air conditioner according to claim 1, characterized in that: The motor further comprises at least one transmission shaft (15), wherein the transmission shaft (15) is rotatably connected to the motor body (11), wherein one of the transmission wheels (16) is connected to the motor shaft (12) of the motor body (11), and the remaining transmission wheels (16) are respectively connected to the transmission shaft (15).

3. The air conditioner according to claim 1, characterized in that: The motor assembly further comprises at least two transmission shafts (15), all of the transmission shafts (15) being adapted to be arranged around a motor shaft (12) of the motor body (11), the motor shaft (12) driving one of the transmission shafts (15) to rotate, the transmission shaft (15) being rotationally connected to the motor body (11), and the transmission wheels (16) being respectively connected to the transmission shafts (15).

4. The air conditioner according to claim 3, characterized in that: The motor assembly further comprises a first gear (13) and a second gear (17); the first gear (13) is connected to the motor shaft (12), the second gear (17) is connected to one of the transmission shafts (15), and the first gear (13) and the second gear (17) are meshed.

5. The air conditioner according to claim 3, characterized in that: The diameter of the transmission wheel (16) drivingly connected to the motor shaft (12) is smaller than the diameters of the other transmission wheels (16).

6. The air conditioner according to claim 4, characterized in that: The motor assembly further comprises a protective cover (18), wherein the protective cover (18) is detachably connected to the motor body (11), the protective cover (18) is arranged outside the first gear (13) and the second gear (17), and the transmission shaft (15) extends outside the protective cover (18).

7. The air conditioner according to claim 6, characterized in that: The end surface of the motor shaft (12) that is away from the motor body (11) is not exposed to the end surface of the protective cover (18) that is away from the motor body (11).

8. The air conditioner according to claim 6, applied to an air conditioner, characterized in that: The protective cover (18) is provided with a limiting surface structure (181), and the limiting surface structure (181) is suitable for cooperating with a limiting structure on the base of the air conditioner to limit the circumferential rotation of the protective cover (18).

9. The air conditioner according to claim 1, characterized in that: The angle between the center of the driving pulley (44) and the connecting line of the centers of the two air conditioner driving shafts (15) is between 120 degrees and 180 degrees.

10. The air conditioner according to claim 1, characterized in that: It also comprises an upper base (2) and a lower base (3) which are detachably connected to the lower base (3); the fan assembly (4) is mounted on the lower base (3); and the motor assembly (1) is mounted on the upper base (2).

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