Fan and air conditioner with same

Abstract

The fan comprises a wind wheel and a motor, the wind wheel is a cross-flow wind wheel and comprises a wind wheel body, a first end cover and a second end cover, the first end cover and the second end cover are arranged at the two axial ends of the wind wheel body, and the motor is arranged on the side, away from the first end cover, of the second end cover. The motor is an outer rotor motor and comprises a rotor and a stator, the rotor comprises a rotor magnetic ring in running fit with the stator, and the rotor magnetic ring and the wind wheel body are coaxially arranged and integrally connected with the second end cover. According to the fan disclosed by the utility model, the rotor magnetic ring is integrally connected with the second end cover of the wind wheel, so that the axial length of the fan can be reduced, and a structure for assembling the rotor magnetic ring and the second end cover can be omitted, so that the use amount of manufacturing materials required by the rotor magnetic ring can be reduced, and the manufacturing cost is saved; and the assembling steps of the rotor and the second end cover can be simplified, and the assembling efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of fan equipment, and in particular to a fan and an air conditioner having the same. Background Art

[0002] Some fans in related technologies include a cross-flow impeller and a drive motor. The drive motor is located at one axial end of the cross-flow impeller, and the drive motor extends a rotating shaft towards the cross-flow impeller. The end of the rotating shaft is connected to the cross-flow impeller to drive the cross-flow impeller to rotate. This type of fan has a large overall axial length and occupies a lot of space. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a fan that, by employing an external rotor motor and integrating the rotor magnetic ring into the second end cover of the impeller, can reduce the axial length of the fan and the amount of manufacturing materials used, thereby saving manufacturing costs.

[0004] This utility model also proposes an air conditioner having the above-mentioned fan.

[0005] According to a first aspect of the present invention, a fan includes: a wind turbine, which is a cross-flow wind turbine and includes a wind turbine body and a first end cover and a second end cover disposed at both axial ends of the wind turbine body; and a motor, which is disposed on the side of the second end cover away from the first end cover, the motor being an external rotor motor and including a rotor and a stator, the rotor including a rotor magnetic ring that rotatably engages with the stator, the rotor magnetic ring being coaxially disposed with the wind turbine and integrally connected to the second end cover.

[0006] According to the present invention, by integrating the rotor magnetic ring with the second end cover of the impeller, the axial length of the fan can be reduced, and the assembly structure of the rotor magnetic ring and the second end cover can be eliminated, thereby reducing the amount of material required for manufacturing the rotor magnetic ring, saving manufacturing costs, and simplifying the assembly steps of the rotor and the second end cover, thus improving assembly efficiency.

[0007] In some embodiments, the second end cap is integrally connected to the wind turbine body.

[0008] In some embodiments, the second end cover is provided with a plurality of insertion holes, which are spaced apart along the circumference of the wind turbine body. The wind turbine body includes a plurality of blades, which are inserted into and engaged with the plurality of insertion holes. The wind turbine body is integrally connected to the second end cover through the blades.

[0009] In some embodiments, the second end cap has a fixing seat protruding in a direction away from the wind turbine body, and the second end cap is integrally connected to the rotor magnetic ring through the fixing seat.

[0010] In some embodiments, the mounting base is formed as an annulus extending circumferentially along the rotor magnetic ring, and the rotor magnetic ring is connected to the mounting base throughout the entire circumferential direction.

[0011] In some embodiments, the mounting base includes a base portion, a seat end face of the base portion facing the motor, and a rotor end face of the rotor magnetic ring near the wind turbine body, wherein the seat end face is connected to the rotor end face.

[0012] In some embodiments, the mounting base includes a base portion and a mounting flange, the mounting flange protruding from the base portion in a direction away from the wind turbine body, the mounting flange being located in the outer peripheral region of the rotor magnetic ring and connected to the outer peripheral surface of the rotor magnetic ring.

[0013] In some embodiments, at least one of the rotor magnetic ring and the fixed base has a positioning structure that mates with the other to limit the relative movement of the rotor magnetic ring and the fixed base along the radial direction of the rotor magnetic ring.

[0014] In some embodiments, the positioning structure includes a protrusion disposed on the rotor magnetic ring and extending toward the direction close to the wind turbine body, wherein the protrusion is embedded in the fixing seat; or, the protrusion extends to the side of the fixing seat close to the central axis of the rotor magnetic ring; or, the protrusion extends to the side of the fixing seat away from the central axis of the rotor magnetic ring.

[0015] In some embodiments, the protrusion is annular, or the protrusion is a plurality of protrusions spaced apart circumferentially along the rotor magnetic ring.

[0016] In some embodiments, the rotor further includes a rotor retainer ring disposed on the side of the second end cover away from the impeller body and connected to the second end cover, the rotor retainer ring surrounding the rotor magnetic ring circumferentially.

[0017] In some embodiments, the rotor retaining ring is integrally connected to the second end cover, or the rotor retaining ring is detachably connected to the second end cover.

[0018] In some embodiments, the rotor further includes a rotating shaft disposed at the center of the rotor magnetic ring, the rotating shaft being disposed on the second end cover, the stator having a shaft hole at its center, a sliding bearing being disposed in the shaft hole, the rotating shaft being inserted into the sliding bearing and having a clearance fit with the sliding bearing.

[0019] In some embodiments, the second end cap is integrally connected to the rotating shaft.

[0020] An air conditioner according to a second aspect of the present invention includes: a chassis and a fan, wherein the fan is the same as the fan according to a first aspect of the present invention, a first end cover is rotatably supported on the chassis by a fan bearing, and the motor further includes a stator cover, wherein the stator is fixedly mounted on the chassis by the stator cover.

[0021] According to the embodiments of the present invention, the air conditioner, by setting the fan of the first aspect of the present invention, with the rotor and the impeller fixedly connected to ensure the coaxiality of the rotor and the impeller, and the stator fixedly connected to the chassis, can improve the coaxiality of the rotor and the stator, improve the reliability of the rotational cooperation between the rotor and the stator, reduce the friction between the rotor and the stator, reduce stator oscillation, and also improve the working stability of the air conditioner.

[0022] In some embodiments, the air conditioner is a wall-mounted air conditioner, and the axis of the cross-flow fan is in the left-right direction.

[0023] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] Figure 1 This is an exploded view of the structure of a fan according to an embodiment of the present invention;

[0025] Figure 2 This is an exploded view of another structure of a fan according to one embodiment of the present invention;

[0026] Figure 3 This is a cross-sectional view of a wind turbine according to an embodiment of the present invention;

[0027] Figure 4 It is based on Figure 3 A magnified view of region A in the example shown;

[0028] Figure 5 This is a cross-sectional view of the wind turbine according to another embodiment of the present invention;

[0029] Figure 6 It is based on Figure 5 A magnified view of region B in the example shown;

[0030] Figure 7 This is a schematic diagram of the rotor according to Embodiment 1 of the present utility model;

[0031] Figure 8 It is based on Figure 7 The cross-sectional view of the rotor shown in the example;

[0032] Figure 9 This is a schematic diagram of the rotor according to Embodiment 2 of this utility model;

[0033] Figure 10 It is based on Figure 9 The cross-sectional view of the rotor shown in the example;

[0034] Figure 11 This is a schematic diagram of the rotor according to Embodiment 3 of this utility model;

[0035] Figure 12 It is based on Figure 11 The cross-sectional view of the rotor shown in the example;

[0036] Figure 13 This is a schematic diagram of the rotor according to Embodiment 4 of this utility model;

[0037] Figure 14 It is based on Figure 13 The cross-sectional view of the rotor shown in the example;

[0038] Figure 15 This is a schematic diagram of the rotor according to Embodiment 5 of this utility model;

[0039] Figure 16 It is based on Figure 15 The cross-sectional view of the rotor shown in the example;

[0040] Figure 17 This is a partial cross-sectional view of a fan according to an embodiment of the present invention;

[0041] Figure 18 This is a partial structural schematic diagram of an air conditioner according to an embodiment of the present invention;

[0042] Figure 19 This is an exploded view of a portion of the structure of an air conditioner according to an embodiment of the present invention.

[0043] Figure label:

[0044] Air conditioner 100;

[0045] Chassis 10;

[0046] Fan 20;

[0047] Wind turbine 2; Cross-flow wind turbine 2a; Wind turbine body 21; Wind blade 211; Middle section 212; First end cover 22; Second end cover 23; Insertion hole 231; Fixing seat 232; Base part 2321; Seat end face 2321a; Seat flange 2322; Fan bearing 24;

[0048] Motor 3; Rotor 31; Rotor magnetic ring 311; Rotor end face 311b; Positioning structure 311a; Protrusion 3111; Rotary shaft 312; Rotor retaining ring 314; Stator 32; Shaft hole 323; Stator cover 33; Sliding bearing 37; Ball bearing 371; Bearing housing 372;

[0049] Fastener 40;

[0050] Motor cover 50. DETAILED DESCRIPTION

[0051] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0052] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0053] The fan 20 of the first aspect of this utility model is described below with reference to the accompanying drawings.

[0054] According to the embodiment of the present utility model, the fan 20, such as Figure 1 As shown, the fan 20 includes: a wind turbine 2 and a motor 3. The wind turbine 2 is a cross-flow wind turbine 2a, and includes a wind turbine body 21 and a first end cover 22 and a second end cover 23 located at both axial ends of the wind turbine body 21. The motor 3 is located on the side of the second end cover 23 away from the first end cover 22. The motor 3 is an external rotor motor and includes a rotor 31 and a stator 32. The rotor 31 includes a rotor magnetic ring 311 that rotates with the stator 32. The rotor magnetic ring 311 is coaxially arranged with the wind turbine 2 and integrally connected with the second end cover 23.

[0055] Motor 3 is the driving component, which drives the cross-flow fan wheel 2a to rotate along its axis, thereby generating airflow. Motor 3 is an external rotor motor. Compared with traditional internal rotor motors, the axial dimension of motor 3 in this embodiment of the invention is shorter, which facilitates the assembly and use of the fan 20.

[0056] The motor 3 includes a rotor 31 and a stator 32. When the motor 3 is energized, the magnetic field generated by the stator 32 and the magnetic field generated by the rotor magnetic ring 311 interact, so that the rotor 31 can rotate relative to the stator 32. The rotor magnetic ring 311 is integrally connected to the second end cover 23 of the impeller 2. When the rotor 31 rotates relative to the stator 32, it can drive the impeller 2 to rotate.

[0057] The rotor magnetic ring 311 is integrally connected with the second end cover 23. The rotor magnetic ring 311 does not need to be additionally installed and assembled with the impeller 2. This can save the amount of magnetic material used in the rotor magnetic ring 311, reduce manufacturing costs, and eliminate the need for additional complex magnetization fixtures to meet the magnetization effect of the larger rotor magnetic ring 311, further reducing manufacturing costs.

[0058] It is worth noting that the integrated connection between the rotor magnetic ring 311 and the second end cover 23 refers to a non-detachable connection. For example, for metal, it can be riveted or welded; for plastic, it can be injection molded, bonded, or ultrasonically welded.

[0059] According to the embodiment of the present invention, the fan 20 can reduce the axial length of the fan 20 by integrally connecting the rotor magnetic ring 311 with the second end cover 23 of the impeller 2, and the assembly structure of the rotor magnetic ring 311 and the second end cover 23 can be eliminated, thereby reducing the amount of manufacturing materials required for the rotor magnetic ring 311, saving manufacturing costs, and simplifying the assembly steps of the rotor 31 and the second end cover 23, thus improving assembly efficiency.

[0060] In some embodiments of this utility model, the second end cap 23 is integrally connected with the impeller body 21.

[0061] By integrating the second end cap 23 with the wind turbine body 21, the connection stability of the rotor 31, the second end cap 23 and the wind turbine body 21 can be improved, which is beneficial to improving the structural stability of the wind turbine 2.

[0062] Optionally, the second end cap 23 is welded to the impeller body 21.

[0063] In some embodiments of this utility model, such as Figure 2 As shown, the second end cover 23 has a plurality of insertion holes 231, which are spaced apart along the circumference of the impeller body 21. The impeller body 21 includes a plurality of blades 211, which are inserted into and engaged with the plurality of insertion holes 231. The impeller body 21 is integrally connected to the second end cover 23 through the blades 211.

[0064] The wind turbine body 21 includes multiple wind blades 211 arranged circumferentially. When the wind turbine 2 rotates, the wind blades 211 can drive the airflow. The wind blades 211 located near the second end cover 23 are inserted and matched with the insertion holes 231 on the second end cover 23, which can improve the structural stability of the wind blades 211 and reduce the airflow noise generated when the wind turbine 2 rotates.

[0065] After multiple blades 211 are inserted and positioned with multiple insertion holes 231, they are then integrated with the second end caps 23 to fix the second end caps 23 of the wind turbine body 21.

[0066] In some embodiments of this utility model, such as Figure 2 As shown, the wind turbine body 21 also includes multiple intermediate sections 212, which are spaced apart along the axial direction of the wind turbine 2, and multiple wind blades 211 are sandwiched between two adjacent intermediate sections 212.

[0067] In some embodiments of this utility model, multiple middle sections 212 and multiple fan blades 211 are integrally injection molded.

[0068] In some embodiments of this utility model, such as Figure 3 and Figure 4 As shown, the second end cover 23 has a fixing seat 232 protruding in a direction away from the wind turbine body 21, and the second end cover 23 is integrally connected to the rotor magnetic ring 311 through the fixing seat 232.

[0069] It is understandable that the rotor magnetic ring 311 is coaxially connected to the wind turbine 2 to improve the stability of the wind turbine 2 rotation. Therefore, by setting the fixing seat 232, the installation position of the rotor magnetic ring 311 can be clearly given, which can improve the assembly efficiency of the wind turbine 2 and the finished product qualification rate.

[0070] Furthermore, by setting the fixing seat 232 to connect with the rotor magnetic ring 311, it is also beneficial to improve the connection stability between the rotor magnetic ring 311 and the second end cover 23. For example, the rotor magnetic ring 311 and the second end cover 23 are welded together. By setting the fixing seat 232 to protrude in a direction away from the cross-flow impeller 2a, the welding operation is facilitated, which can improve assembly efficiency and connection stability.

[0071] In some embodiments of this utility model, the rotor magnetic ring 311 is a magnetic ring.

[0072] In some embodiments of this utility model, such as Figure 4 As shown, the mounting base 232 is formed as an annulus extending circumferentially along the rotor magnetic ring 311, and the rotor magnetic ring 311 is connected to the mounting base 232 throughout the entire circumferential direction.

[0073] The fixed base 232 is annular and is connected to the entire end face of the rotor magnetic ring 311 facing the second end cover 23, which can increase the contact area and help improve the connection stability of the rotor magnetic ring 311 and the second end cover 23.

[0074] In some embodiments of this utility model, such as Figure 4 As shown, the fixed base 232 includes a base portion 2321, a seat end face 2321a on the side surface of the base portion 2321 facing the motor 3, and a rotor end face 311b on the side surface of the rotor magnetic ring 311 near the wind turbine body 21. The seat end face 2321a is connected to the rotor end face 311b.

[0075] The base portion 2321 is also an annular shape extending circumferentially along the rotor 31. The rotor 31 is connected to the entire base end face 2321a at least through the rotor end face 311b on the side close to the wind turbine body 21. The connection stability between the rotor 31 and the second end cover 23 is relatively strong.

[0076] In some embodiments of this utility model, such as Figure 5 and Figure 6 As shown, the fixed seat 232 includes a base portion 2321 and a seat flange 2322. The seat flange 2322 protrudes from the base portion 2321 in a direction away from the impeller body 21. The seat flange 2322 is located in the outer peripheral region of the rotor magnetic ring 311 and is connected to the outer peripheral surface of the rotor magnetic ring 311.

[0077] The seat flange 2322 is formed as an annulus extending circumferentially along the rotor magnetic ring 311. The rotor magnetic ring 311 is connected to the seat flange 2322 at least through its outer peripheral surface. The connection stability between the rotor magnetic ring 311 and the second end cover 23 is relatively strong.

[0078] In other embodiments of this utility model, such as Figure 5 and Figure 6 As shown, the fixed base 232 includes a base portion 2321 and a seat flange 2322. The seat flange 2322 protrudes from the base portion 2321 in a direction away from the wind turbine body 21. The side surface of the rotor magnetic ring 311 near the wind turbine body 21 is connected to the base portion 2321, and the outer peripheral surface of the rotor magnetic ring 311 is connected to the seat flange 2322.

[0079] The side surface of the rotor magnetic ring 311 closest to the wind turbine body 21 and the outer peripheral surface of the rotor magnetic ring 311 are both in contact with the fixed base 232, which can further improve the connection stability of the rotor magnetic ring 311 and the second end cover 23.

[0080] In some embodiments of this utility model, such as Figure 7As shown, at least one of the rotor magnetic ring 311 and the fixed base 232 has a positioning structure 311a that cooperates with the other to limit the relative movement of the rotor magnetic ring 311 and the fixed base 232 along the radial direction of the rotor magnetic ring 311.

[0081] By setting the positioning structure 311a to position the rotor magnetic ring 311 and the fixed base 232, the assembly efficiency and connection accuracy can be improved. Furthermore, the rotor magnetic ring 311 can transmit torque through the positioning structure 311a, thereby improving the working reliability of the impeller 2.

[0082] In some embodiments of this utility model, such as Figure 7 and Figure 8 As shown, the positioning structure 311a includes a protrusion 3111 disposed on the rotor magnetic ring 311 and extending toward the direction close to the wind turbine body 21, and the protrusion 3111 is embedded in the fixing seat 232.

[0083] The mounting base 232 is formed as an annular ring extending circumferentially along the rotor magnetic ring 311. The protrusion 3111 on the rotor magnetic ring 311 is embedded into the mounting base 232 from the end face of the mounting base 232 facing the rotor magnetic ring 311, so that the rotor magnetic ring 311 and the mounting base 232 are embedded and connected, thereby improving the connection stability of the rotor magnetic ring 311 and the second end cover 23.

[0084] In other embodiments of this utility model, such as Figure 9 and Figure 10 As shown, the positioning structure 311a includes a protrusion 3111 disposed on the rotor magnetic ring 311 and extending toward the direction close to the impeller body 21. The protrusion 3111 extends to the side of the fixing seat 232 near the central axis of the rotor magnetic ring 311.

[0085] The mounting base 232 is formed as an annular ring extending circumferentially along the rotor magnetic ring 311. The protrusion 3111 on the rotor magnetic ring 311 extends to the radial inner side of the mounting base 232 so that the protrusion 3111 connects with the inner circumferential surface of the mounting base 232, thereby improving the connection stability of the rotor magnetic ring 311 and the second end cover 23.

[0086] In some other embodiments of this utility model, such as Figure 11 and Figure 12 As shown, the positioning structure 311a includes a protrusion 3111 disposed on the rotor magnetic ring 311 and extending toward the direction close to the wind turbine body 21. The protrusion 3111 extends to the side of the fixed seat 232 away from the central axis of the rotor magnetic ring 311.

[0087] The mounting base 232 is formed as an annular ring extending circumferentially along the rotor magnetic ring 311. The protrusion 3111 on the rotor magnetic ring 311 extends to the radial outer side of the mounting base 232 so that the protrusion 3111 connects with the outer peripheral surface of the mounting base 232, thereby improving the connection stability of the rotor magnetic ring 311 and the second end cover 23.

[0088] In some embodiments of this utility model, such as Figures 7-12 As shown, the protrusion 3111 is annular. By setting the protrusion 3111 to be annular, the contact area between the protrusion 3111 and the fixed base 232 can be increased, thereby improving the connection stability between the rotor magnetic ring 311 and the fixed base 232.

[0089] In other embodiments of this utility model, such as Figures 13-16 As shown, there are multiple protrusions 3111, which are spaced apart circumferentially along the rotor magnetic ring 311. By setting multiple protrusions 3111, the connection stability between the rotor magnetic ring 311 and the fixed base 232 can be improved, and the rotor magnetic ring 311 can transmit torque through multiple protrusions 3111, thereby improving the working reliability of the impeller 2.

[0090] In Example 1, as Figure 7 and Figure 8 As shown, the rotor magnetic ring 311 is provided with an annular protrusion 3111, which is located at the radial center of the end face of the rotor magnetic ring 311 near the impeller body 21. Optionally, the protrusion 3111 is embedded in the fixing seat 232.

[0091] In Example 2, as Figure 9 and Figure 10 As shown, the rotor magnetic ring 311 is provided with an annular protrusion 3111. The protrusion 3111 is located radially inward on the end face of the rotor magnetic ring 311 near the impeller body 21, and the inner circumferential surface of the protrusion 3111 and the inner circumferential surface of the rotor magnetic ring 311 are on the same plane. Optionally, the protrusion 3111 extends to the side of the fixing seat 232 near the central axis of the rotor magnetic ring 311.

[0092] In Example 3, as Figure 11 and Figure 12 As shown, the rotor magnetic ring 311 has an annular protrusion 3111. The protrusion 3111 is located radially outward on the side end face of the rotor magnetic ring 311 near the impeller body 21, and the outer peripheral surface of the protrusion 3111 and the outer peripheral surface of the rotor magnetic ring 311 are on the same plane. Optionally, the protrusion 3111 extends to the side of the fixing seat 232 away from the central axis of the rotor magnetic ring 311.

[0093] In Example 4, as Figure 13 and Figure 14As shown, the rotor magnetic ring 311 is provided with a plurality of columnar protrusions 3111, which are spaced apart circumferentially along the rotor magnetic ring 311. Optionally, the protrusions 3111 are embedded in the fixing seat 232.

[0094] In Example 5, as Figure 15 and Figure 16 As shown, the rotor magnetic ring 311 is provided with a plurality of rectangular protrusions 3111, which are spaced apart along the circumference of the rotor magnetic ring 311. Optionally, the protrusions 3111 are embedded in the fixing seat 232.

[0095] In some embodiments of this utility model, such as Figure 1 As shown, the rotor 31 also includes a rotor retaining ring 314, which is located on the side of the second end cover 23 away from the wind turbine body 21 and is connected to the second end cover 23. The rotor retaining ring 314 surrounds the rotor magnetic ring 311 around the rotor 31 in the circumferential direction.

[0096] The rotor retaining ring 314 is located on the outside of the rotor magnetic ring 311. The rotor retaining ring 314 protects the inner rotor magnetic ring 311 and improves the situation where the rotor magnetic ring 311 is damaged during transportation and movement.

[0097] In some embodiments of this utility model, such as Figure 2 and Figure 4 As shown, the rotor retaining ring 314 is integrally connected to the second end cover 23. This improves the structural stability of the rotor retaining ring 314 and better protects the inner rotor magnetic ring 311.

[0098] In some embodiments of this utility model, the rotor retaining ring 314, which is integrally connected with the second end cover 23, is circular. The circular rotor retaining ring 314 occupies less space and is easy to dynamically balance, which is beneficial to the rotation of the impeller 2.

[0099] In some other embodiments of this utility model, the rotor retaining ring 314 is detachably connected to the second end cover 23.

[0100] During transportation, the rotor retaining ring 314 is connected to the second end cover 23 to protect the inner rotor magnetic ring 311. When assembling the impeller 2, the rotor retaining ring 314 can be removed from the second end cover 23 to reduce the space occupied.

[0101] Optionally, the rotor retaining ring 314 can be circular, square, or hexagonal, etc., to better protect the rotor magnetic ring 311.

[0102] In some embodiments of this utility model, such as Figure 17As shown, the rotor also includes a rotating shaft 312 located at the center of the rotor magnetic ring 311. The rotating shaft 312 is mounted on the second end cover 23. The stator 32 has a shaft hole 323 at its center. A sliding bearing 37 is installed in the shaft hole 323. The rotating shaft 312 is inserted into the sliding bearing 37 and is clearance-fitted with the sliding bearing 37.

[0103] The rotating shaft 312 is inserted into the sliding bearing 37 in the shaft hole 323 of the stator 32. The cooperation between the rotating shaft 312 and the shaft hole 323 can improve the stability of the cooperation between the rotor 31 and the stator 32 mounted on the second end cover 23, reduce the displacement of the rotor 31 and the stator 32, and help improve the coaxiality of the rotor 31 and the stator 32.

[0104] A sliding bearing 37 is provided in the shaft hole 323 of the stator 32. The rotating shaft 312 is inserted into the sliding bearing 37 and is clearance-fitted with the sliding bearing 37. Compared with the rolling bearing in the shaft hole 323, the assembly of the rotating shaft 312 and the sliding bearing 37 is faster and easier, which is conducive to improving assembly efficiency, increasing production efficiency, and reducing manufacturing costs.

[0105] In some embodiments of this utility model, such as Figure 17 As shown, the sliding bearing 37 includes a ball bearing 371 and a bearing housing 372. The bearing housing 372 is sleeved outside the ball bearing 371, and the rotating shaft 312 passes through the ball bearing 371. The bearing housing 372 is made of vibration damping material.

[0106] The sliding bearing 37 includes a bearing housing 372 fixedly installed in the shaft hole 323 and a ball bearing 371 that mates with the rotating shaft 312. The ball bearing 371 is disposed in the bearing housing 372, and the rotating shaft 312 passes through the ball bearing 371 and is clearance-fitted with the ball bearing 371.

[0107] The sliding bearing 37 comprises two parts, allowing the ball bearing 371 and the bearing housing 372 to be made of different materials, facilitating flexible design. The bearing housing 372 is made of vibration-damping material, which reduces vibration and wear. When the rotating shaft 312 is inserted into the sliding bearing 37a, the ball bearing 371 can be rotated to finely adjust its angle, enabling the rotating shaft 312 to be inserted quickly, improving assembly efficiency and reducing assembly difficulty.

[0108] In some embodiments of this utility model, such as Figure 1 As shown, the second end cap 23 is integrally connected to the rotating shaft 312. This improves the connection stability between the rotating shaft 312 and the second end cap 23, and simplifies the assembly process, thereby increasing assembly efficiency.

[0109] The air conditioner 100 of the second aspect of this utility model is described below with reference to the accompanying drawings.

[0110] According to the second aspect of the present invention, the air conditioner 100, such as Figure 18 and Figure 19 As shown, the air conditioner 100 includes: a chassis 10 and a fan 20. The fan 20 is the fan 20 of the first aspect of this utility model. The first end cover 22 is rotatably supported on the chassis 10 by the fan bearing 24. The motor 3 also includes a stator cover 33. The stator 32 is fixedly installed on the chassis 10 by the stator cover 33.

[0111] The stator 32 is fixedly mounted on the stator cover 33, which is fixedly connected to the chassis 10, thereby fixing the stator 32 and the chassis 10 relatively. Stable mounting of the stator 32 and the chassis 10 helps improve the coaxiality of the rotor 31 and the stator 32, enhances the reliability of the rotational engagement between the rotor 31 and the stator 32, reduces friction between the rotor 31 and the stator 32, reduces stator 32 oscillation, and also improves the operational stability of the air conditioner 100.

[0112] According to the embodiment of the present invention, the air conditioner 100, by setting the fan 20 of the first aspect of the present invention, the rotor 31 is fixedly connected to the impeller 2, ensuring the coaxiality of the rotor 31 and the impeller 2, and the stator 32 is fixedly connected to the chassis 10, can improve the coaxiality of the rotor 31 and the stator 32, improve the reliability of the rotational cooperation between the rotor 31 and the stator 32, reduce the friction between the rotor 31 and the stator 32, reduce the oscillation of the stator 32, and also improve the working stability of the air conditioner 100.

[0113] According to the second aspect of the present invention, the air conditioner 100, such as Figure 18 and Figure 19 As shown, the air conditioner 100 also includes a motor cover 50, which cooperates with the chassis 10 to surround the stator cover 33, and the motor cover 50 is fixed to the stator cover 33 and / or the chassis 10 by fasteners 40.

[0114] After the stator cover 33 secures the stator 32 to the chassis 10, the motor cover 50 is installed outside the stator cover 33, further enhancing the installation stability of the stator cover 33 and the chassis 10. Furthermore, the motor cover 50 also improves the operational safety of the stator 32, protecting the internal stator 32 and preventing external contaminants from directly contacting it. It is understandable that since the motor 3 is a live component, the motor cover 50 surrounding the stator cover 33 also prevents users from directly contacting the internal stator 32, thus improving operational safety.

[0115] In some embodiments of this utility model, a bearing chamber is provided on the chassis 10 on the axial side of the air duct cavity away from the motor 3. The fan bearing 24 is connected to the first end of the impeller 2. The fan bearing 24 is rotatably arranged in the bearing chamber. The impeller 2 can be rotatably arranged in the air duct cavity through the fan bearing 24 at the first end.

[0116] When assembling the fan 20 onto the chassis 10, firstly, the stator 32 is fixedly installed inside the stator cover 33; then, the stator cover 33 is fixedly installed onto the chassis 10; next, the rotating shaft 312 on the second end cover 23 of the impeller 2 is fitted with the stator 32, and the rotating shaft 312 is inserted into the shaft hole 323 of the stator 32; the first end cover 22 of the impeller 2 is rotatably mounted onto the chassis 10 via the fan bearing 24. Finally, the motor cover 50 is installed onto the chassis 10.

[0117] In some embodiments of this utility model, such as Figure 18 As shown, air conditioner 100 is a wall-mounted air conditioner, and the axis of the cross-flow fan 2a is in the left-right direction.

[0118] Air conditioner 100 is a wall-mounted air conditioner, which is convenient for use in environments with limited space. By setting the motor 3 mentioned above, the axial dimension of motor 3 can be shortened, which can reduce the space occupied by the wall-mounted air conditioner in the left and right directions, which helps to reduce the size of air conditioner 100 and facilitates the placement and use of air conditioner 100.

[0119] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0120] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0121] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0122] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0123] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0124] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A fan, characterized in that, include: The wind turbine is a cross-flow wind turbine and includes a wind turbine body and a first end cover and a second end cover disposed at both axial ends of the wind turbine body; The motor is located on the side of the second end cover away from the first end cover. The motor is an external rotor motor and includes a rotor and a stator. The rotor includes a rotor magnetic ring that rotates with the stator. The rotor magnetic ring is coaxially arranged with the wind turbine and integrally connected to the second end cover.

2. The fan according to claim 1, characterized in that, The second end cap is integrally connected to the wind turbine body.

3. The fan according to claim 2, characterized in that, The second end cover has multiple insertion holes spaced apart around the circumference of the wind turbine body. The wind turbine body includes multiple blades, which are inserted into the multiple insertion holes. The wind turbine body is integrally connected to the second end cover through the blades.

4. The fan according to claim 1, characterized in that, The second end cover has a fixing seat protruding in a direction away from the wind turbine body, and the second end cover is integrally connected to the rotor magnetic ring through the fixing seat.

5. The fan according to claim 4, characterized in that, The mounting base is formed as a ring extending circumferentially along the rotor magnetic ring, and the rotor magnetic ring is connected to the mounting base throughout the entire circumferential direction.

6. The fan according to claim 4, characterized in that, The mounting base includes a base portion, a seat end face of the base portion facing the motor, and a rotor end face of the rotor magnetic ring near the wind turbine body. The seat end face is connected to the rotor end face.

7. The fan according to claim 4 or 6, characterized in that, The fixed base includes a base portion and a seat flange. The seat flange protrudes from the base portion in a direction away from the wind turbine body. The seat flange is located in the outer peripheral region of the rotor magnetic ring and is connected to the outer peripheral surface of the rotor magnetic ring.

8. The fan according to claim 4, characterized in that, At least one of the rotor magnetic ring and the fixed base has a positioning structure that mates with the other to limit the relative movement of the rotor magnetic ring and the fixed base along the radial direction of the rotor magnetic ring.

9. The fan according to claim 8, characterized in that, The positioning structure includes a protrusion disposed on the rotor magnetic ring and extending toward the direction close to the wind turbine body, wherein the protrusion is embedded in the fixing seat; or, the protrusion extends to the side of the fixing seat close to the central axis of the rotor magnetic ring; or, the protrusion extends to the side of the fixing seat away from the central axis of the rotor magnetic ring.

10. The fan according to claim 9, characterized in that, The protrusion is annular, or the protrusion is multiple and spaced apart circumferentially along the rotor magnetic ring.

11. The fan according to claim 1, characterized in that, The rotor also includes a rotor retaining ring, which is located on the side of the second end cover away from the wind turbine body and connected to the second end cover. The rotor retaining ring surrounds the rotor magnetic ring around the rotor circumferentially.

12. The fan according to claim 11, characterized in that, The rotor retaining ring is integrally connected to the second end cover, or the rotor retaining ring is detachably connected to the second end cover.

13. The fan according to claim 1, characterized in that, The rotor also includes a rotating shaft located at the center of the rotor magnetic ring. The rotating shaft is mounted on the second end cover. The stator has a shaft hole at its center. A sliding bearing is installed in the shaft hole. The rotating shaft is inserted into the sliding bearing and is clearance-fitted with the sliding bearing.

14. The fan according to claim 13, characterized in that, The second end cap is integrally connected to the rotating shaft.

15. An air conditioner, characterized in that, include: Chassis; The fan is a fan according to any one of claims 1-14, wherein the first end cover is rotatably supported on the chassis by a fan bearing, and the motor further includes a stator cover, wherein the stator is fixedly installed on the chassis by the stator cover.

16. The air conditioner according to claim 15, characterized in that, The air conditioner is a wall-mounted air conditioner, and the axis of the cross-flow fan is in the left-right direction.

Images