Cross-flow fan and drop machine

Abstract

The utility model relates to a hanging machine technical field provides a cross flow fan and hanging machine, cross flow fan includes cross flow fan, volute and motor, volute includes volute body and end cover, cross flow fan is established in volute space of volute body, volute body first end is equipped with through hole, along the axial direction of cross flow fan, the projection area of cross flow fan is located in the projection area of through hole, end cover is located in the through hole, and end cover and volute body are detachably connected, and cross flow fan first end and end cover rotatory connection, motor is located in volute body second end, and cross flow fan second end and motor output shaft are detachably connected. Thus, disconnect end cover and volute body, cross flow fan and motor output shaft are disconnected, make cross flow fan along self axial direction away from motor, through the through hole can be moved to volute outside, complete the individual disassembly of cross flow fan, avoid the dismounting of motor, simple operation, convenient for the maintenance replacement of cross flow fan.

Description

Technical Field

[0001] This utility model relates to the field of hoisting machine technology, and in particular to a cross-flow fan and a hoisting machine. Background Technology

[0002] The air conditioner is a core component of an air conditioning system. It draws in outside air through the air inlet using a built-in fan, pressurizes and accelerates it, and then exchanges heat through a heat exchanger. Finally, it delivers the regulated air to the target space through the air outlet to achieve the functions of cooling, heating or ventilation, and maintain the temperature, humidity and air quality of the target space.

[0003] The fan inside the hoist consists of a volute, a motor, and a cross-flow fan. The motor's output shaft is located inside the cross-flow fan's bushing, connecting the motor's output shaft to the fan and enabling the motor to drive the fan's rotation. When assembling or disassembling the fan inside the hoist, it's crucial to ensure the motor and fan are connected. The fan should be installed as a whole into the volute, which is pre-fixed within the hoist, along the direction of the volute's air inlet, or removed entirely from the volute. Because the motor's output shaft obstructs the cross-flow fan's movement along the volute's air inlet, the fan cannot be removed from the volute separately. When repairing or replacing the cross-flow fan, both the motor and the fan must be removed together. The hoisting and installation of the hoist involves a heavy motor, making operation inconvenient and requiring careful attention to the motor's wiring connections, which is time-consuming, labor-intensive, and challenging.

[0004] Therefore, how to solve the problem of the inconvenience of repairing and replacing the cross-flow fan of the hoist in related technologies has become an important technical problem to be solved by those skilled in the art. Utility Model Content

[0005] This utility model provides a cross-flow fan and a drop fan to solve the defect of the cross-flow fan of the drop fan in the related technology being inconvenient to maintain and replace.

[0006] This utility model provides a cross-flow fan, comprising: Cross-flow fan; The volute includes a volute body and an end cap. The volute body has a volute space inside, and the cross-flow fan is disposed in the volute space. A through hole is provided at the first end of the volute body. Along the axial direction of the cross-flow fan, the projection area of ​​the cross-flow fan is located inside the projection area of ​​the through hole. The end cap is disposed in the through hole and is detachably connected to the volute body. The first end of the cross-flow fan is rotatably connected to the end cap. The motor is located at the second end of the volute body, and the second end of the cross-flow fan is detachably connected to the output shaft of the motor.

[0007] With this setup, when the cross-flow fan needs maintenance or replacement, disconnect the end cover from the volute body and disconnect the second end of the cross-flow fan from the motor's output shaft. Then, apply a force along the fan's axis to the fan, causing it to gradually move away from the motor and through the through-hole to the outside of the volute space, thus allowing the fan to be removed individually. After removing the fan from the volute, maintenance can begin. When installing the repaired or new cross-flow fan into the volute, align the second end of the fan with the through-hole and apply a force along its axis to move it closer to the motor through the through-hole until the second end reaches the motor's output shaft. Connect the motor's output shaft to the second end of the fan, and then connect the end cover to the volute body. This design avoids disassembling and assembling the motor, and eliminates the need to disassemble or reassemble the motor's wiring points. The disassembly and assembly operations are simple and convenient, reducing the difficulty of maintaining and replacing the cross-flow fan of the hoist and improving the convenience of maintaining and replacing the cross-flow fan of the hoist. This solves the problem of inconvenient maintenance and replacement of the cross-flow fan of the hoist in related technologies.

[0008] According to the present invention, a cross-flow fan is provided on the end cover, and an oil-impregnated bearing is fixed inside the bearing seat. The first end of the cross-flow fan has a rotating shaft that is inserted into the inner hole of the oil-impregnated bearing.

[0009] This design, with lubricating grease inside the oil-impregnated bearing, reduces wear on the shaft. The shaft of the cross-flow fan is connected to the oil-impregnated bearing on the end cover via a plug-in connection. After disconnecting the end cover from the volute body, apply a force away from the volute body along the axis of the cross-flow fan to remove the end cover from both the volute body and the cross-flow fan. Then, apply force to the cross-flow fan to remove it from the volute body.

[0010] According to the present invention, a cross-flow fan is provided, wherein the second end of the cross-flow fan has a bushing, the output shaft of the motor extends into the bushing, and the output shaft of the motor is connected to the bushing by fasteners; The bushing has a threaded hole on its side wall, and the fastener is threadedly connected to the threaded hole. The output shaft of the motor has an anti-rotation plane on its side wall. The first end of the fastener abuts against the anti-rotation plane, and the second end of the fastener is located outside the bushing.

[0011] With this configuration, the first end of the fastener is pressed against the anti-rotation plane of the motor output shaft. The bushing of the cross-flow fan will neither rotate relative to the motor output shaft nor move relative to the motor output shaft along the axial direction of the cross-flow fan. At this point, the second end of the cross-flow fan is considered to be connected to the motor output shaft. Alternatively, a gap can be created between the second end of the fastener and the anti-rotation plane of the motor output shaft to allow the cross-flow fan to move relative to the motor output shaft along its own axial direction. At this point, the second end of the cross-flow fan is considered to be disconnected from the motor output shaft.

[0012] According to the present invention, a cross-flow fan is provided, wherein the bushing is located inside the cross-flow fan, and the target blade of the cross-flow fan is provided with a first clearance notch, the first clearance notch being adapted to allow the torque output end of a torque tool to enter the interior of the cross-flow fan; The target blade is located on the side of the bushing near the second end of the fastener, and along the axial direction of the threaded hole, the projection area of ​​the target blade at least partially overlaps with the projection area of ​​the fastener.

[0013] With this configuration, the first clearance notch corresponds to the fastener, allowing the torque output end of the torque tool to enter the interior of the cross-flow fan, so that the torque output end of the torque tool can connect with the second end of the fastener to apply torque to the fastener.

[0014] According to the present invention, a cross-flow fan is provided, the volute body comprising: The volute plate and the volute tongue plate are arranged opposite to each other, and the volute space is formed between the volute plate and the volute tongue plate. There is a gap between the air inlet end of the volute plate and the air inlet end of the volute tongue plate to form the volute air inlet. An end plate is disposed at the first end of the volute plate and the volute tongue plate, and the through hole is disposed in the end plate; A motor mounting base is disposed at the second end of the volute plate and the volute tongue plate, and the motor mounting base is adapted to install the motor.

[0015] With this configuration, a motor mounting base is placed outside the volute space to support and fix the motor.

[0016] According to the present invention, a cross-flow fan is provided, the motor mounting base comprising: A base is fixedly disposed at the second end of the volute plate, and an open first receiving groove is provided on the side of the base facing the air inlet of the volute. The pressure cap has an open second receiving groove, the pressure cap is detachably connected to the base, and the second receiving groove is connected to the first receiving groove to form a receiving space for accommodating the motor.

[0017] With this configuration, the pressure cap can be removed from the base when the motor needs to be disassembled or assembled, making it convenient to disassemble or assemble the motor.

[0018] According to the present invention, a cross-flow fan is provided with a first process protrusion on the side of the end cover near the cross-flow fan, the first process protrusion extending circumferentially along the cross-flow fan, and a second process protrusion is provided on the end of the pressure cover near the cross-flow fan, the second process protrusion extending circumferentially along the cross-flow fan. Along the axial direction of the threaded hole, the projection area of ​​the second process protrusion at least partially overlaps with the projection area of ​​the fastener; the second process protrusion is provided with a second clearance notch, which is adapted to allow the torque output end of the torque tool to enter the interior of the cross-flow fan.

[0019] This design, combined with the motor mounting bracket, the second process flange, the end cap, and the first process flange, effectively prevents airflow from entering the cross-flow fan from both ends, thus significantly reducing noise. Furthermore, the second clearance notch corresponds to the fastener, allowing the torque output end of the torque tool to enter the interior of the cross-flow fan. This ensures the torque tool can smoothly apply torque to the fastener, avoiding the influence of the pressure cap on the operating angle of the torque tool and ensuring ease of operation.

[0020] According to the present invention, the base and the volute plate are integrally formed, and the end plate, the volute plate and the volute tongue plate are integrally formed.

[0021] This design improves the stability of the motor mounting bracket and the volute housing, reducing assembly errors.

[0022] According to the present invention, a cross-flow fan is provided, wherein the bearing housing is located on the side of the end cover away from the cross-flow fan, one end of the bearing housing is connected to the end cover, the other end of the bearing housing extends in a direction away from the end cover, and a reinforcing rib is provided between the bearing housing and the end cover.

[0023] This configuration increases the connection rigidity between the bearing housing and the end cover, ensuring the stability of the bearing housing and providing stable support for the first end of the cross-flow fan.

[0024] This utility model also provides a hoisting machine, which includes the aforementioned cross-flow fan.

[0025] This design makes the hoist easy to maintain.

[0026] This utility model provides a cross-flow fan, including a cross-flow fan, a volute, and a motor. The volute includes a volute body and an end cap. The volute body has a volute space inside, and the cross-flow fan is disposed within the volute space. A through hole is provided at the first end of the volute body, and the projection area of ​​the cross-flow fan is located inside the projection area of ​​the through hole along the axial direction of the cross-flow fan. The motor is disposed at the second end of the volute body, and the second end of the cross-flow fan is detachably connected to the output shaft of the motor. The end cap is disposed at the through hole, and the first end of the cross-flow fan is rotatably connected to the end cap. When the first end of the cross-flow fan is rotatably connected to the end cap, and the second end of the cross-flow fan is connected to the output shaft of the motor, the motor can drive the cross-flow fan to rotate relative to the volute, and the cross-flow fan operates normally. The end cap is detachably connected to the volute body. When the cross-flow fan needs to be repaired or replaced, the end cap is disconnected from the volute body, and the second end of the cross-flow fan is disconnected from the output shaft of the motor. Then, a force is applied along the axis of the cross-flow fan, causing it to gradually move away from the motor along its own axis and through the through hole to the outside of the volute space, thus allowing the cross-flow fan to be removed separately. After removing the cross-flow fan from the volute, it can be repaired. To complete the repair, when installing the repaired or new cross-flow fan into the volute, align the second end of the fan with the through hole and apply a force along its axis, causing it to gradually approach the motor through the through hole until the second end of the fan moves to the motor's output shaft. Connect the motor's output shaft to the second end of the fan, and then connect the end cover to the volute body. This design avoids disassembling and reassembling the motor, and eliminates the need to disassemble the motor's wiring connections. The disassembly and reassembly operations are simple and convenient, reducing the difficulty of repairing and replacing the cross-flow fan in the hoisting machine, improving the convenience of repairing and replacing the cross-flow fan, and solving the problem of inconvenient repair and replacement of the cross-flow fan in hoisting machines in related technologies.

[0027] Furthermore, the hoisting machine provided by this utility model has the same advantages as described above because it is equipped with the cross-flow fan mentioned above. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a structural schematic diagram of the hoist provided by this utility model from one perspective (only part of the hoist's outer shell is shown).

[0030] Figure 2 yes Figure 1 Enlarged view of point I in the middle.

[0031] Figure 3 This is a structural schematic diagram of the hoist provided by this utility model from another perspective (only part of the hoist's outer shell is shown).

[0032] Figure 4 yes Figure 3 A magnified view of point X in the middle.

[0033] Figure 5 This is a schematic diagram of the cross-flow fan provided by this utility model.

[0034] Figure 6 yes Figure 5 A magnified view of point Y in the middle.

[0035] Figure 7 This is a schematic diagram of the through hole and the first clearance notch provided by this utility model.

[0036] Figure 8 This is a schematic diagram of the connection structure between the cross-flow fan and the end cover provided by this utility model.

[0037] Figure 9 This is a schematic diagram of the connection structure between the motor and the cross-flow fan provided by this utility model.

[0038] Figure label: 1. Crossflow fan; 2. Volute; 3. End cover; 4. Motor; 5. Shaft; 6. Oil-impregnated bearing; 7. Bearing housing; 8. Bushing; 9. Output shaft; 10. Fastener; 11. Anti-rotation plane; 12. Target blade; 13. First clearance notch; 14. Volute; 15. End plate; 16. Base; 17. Pressure cap; 18. First process flange; 19. Second process flange; 20. Second clearance notch; 21. Reinforcing rib. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0040] The following is combined with Figures 1 to 9 This invention describes the cross-flow fan.

[0041] like Figures 1 to 9As shown, the cross-flow fan provided in this embodiment of the present invention includes a cross-flow fan 1, a volute, and a motor 4.

[0042] Specifically, the volute includes a volute body and an end cap 3. The interior of the volute body has a volute space, and the cross-flow fan 1 is disposed in the volute space.

[0043] A through hole is provided at the first end of the volute body. Along the axial direction of the cross-flow fan 1, the projection area of ​​the cross-flow fan 1 is located inside the projection area of ​​the through hole.

[0044] The motor 4 is located at the second end of the volute body, and the second end of the cross-flow fan 1 is detachably connected to the output shaft 9 of the motor 4.

[0045] When the second end of the cross-flow fan 1 is disconnected from the output shaft 9 of the motor 4, the cross-flow fan 1 can move relative to the volute along its own axis and enter and exit the volute space of the volute body through the hole.

[0046] End cap 3 is disposed at the through hole, and the first end of the cross-flow fan 1 is rotatably connected to end cap 3. When the first end of the cross-flow fan 1 is rotatably connected to end cap 3, and the second end of the cross-flow fan 1 is connected to the output shaft 9 of motor 4, the output shaft 9 of motor 4 and end cap 3 provide rotatable support for both ends of the cross-flow fan 1. When motor 4 is running, it can drive the cross-flow fan 1 to rotate relative to the volute, and the cross-flow fan operates normally.

[0047] The end cover 3 is detachably connected to the volute body. When the cross-flow fan 1 needs to be repaired or replaced, the end cover 3 is disconnected from the volute body, and the second end of the cross-flow fan 1 is disconnected from the output shaft 9 of the motor 4. Then, a force is applied to the cross-flow fan 1 along its axial direction, causing the cross-flow fan 1 to gradually move away from the motor 4 along its own axial direction, and move to the outside of the volute space through the hole, thereby removing the cross-flow fan 1 separately.

[0048] After removing the cross-flow fan 1 from the volute, it can be repaired. To repair the cross-flow fan 1, either the repaired or new fan 1, install it into the volute. Align the second end of the fan 1 with the through hole and apply a force along its axial direction to gradually move it closer to the motor 4 through the through hole until the second end of the fan 1 reaches the output shaft 9 of the motor 4. Connect the output shaft 9 of the motor 4 to the second end of the fan 1, and then connect the end cover 3 to the volute body.

[0049] This design avoids disassembling and assembling the motor 4, and eliminates the need to disassemble and assemble the wiring of the motor 4. The disassembly and assembly operations are simple and convenient, reducing the difficulty of maintaining and replacing the cross-flow fan 1 of the hoist and improving the convenience of maintaining and replacing the cross-flow fan 1 of the hoist. This solves the problem of the inconvenience of maintaining and replacing the cross-flow fan 1 of the hoist in related technologies.

[0050] In this embodiment of the utility model, the first end of the cross-flow fan 1 has a rotating shaft 5, the axis of the rotating shaft 5 coincides with the axis of the cross-flow fan 1, and the end cover 3 is connected to the rotating shaft 5 through an oil-impregnated bearing 6.

[0051] Specifically, the end cover 3 is provided with a bearing seat 7, and an oil-impregnated bearing 6 is fixed inside the bearing seat 7. The rotating shaft 5 is inserted into the inner hole of the oil-impregnated bearing 6, and the rotating shaft 5 and the oil-impregnated bearing 6 are rotatably engaged.

[0052] The inner bore of the oil-impregnated bearing 6 contains lubricating grease, which can alleviate the wear on the rotating shaft 5.

[0053] The shaft 5 of the cross-flow fan 1 is connected to the oil-impregnated bearing 6 on the end cover 3 by a plug-in connection. After disconnecting the end cover 3 from the volute body, a force is applied to the end cover 3 away from the volute body along the axial direction of the cross-flow fan 1, so that the end cover 3 can be removed from the volute body and the cross-flow fan 1. Then, a force is applied to the cross-flow fan 1 to remove it from the volute body.

[0054] In this embodiment, the bearing housing 7 has a cylindrical structure and is located on the side of the end cover 3 away from the cross-flow fan 1. One end of the bearing housing 7 is connected to the end cover 3, and the other end of the bearing housing 7 extends in a direction away from the end cover 3. A reinforcing rib 21 is provided between the bearing housing 7 and the end cover 3 to increase the connection rigidity between the bearing housing 7 and the end cover 3, ensure the stability of the bearing housing 7, and ensure stable support for the first end of the cross-flow fan 1.

[0055] In this embodiment of the invention, a bushing 8 is provided at the second end of the cross-flow fan 1, and the axis of the bushing 8 coincides with the axis of the cross-flow fan 1. The output shaft 9 of the motor 4 extends into the bushing 8, and the output shaft 9 of the motor 4 is connected to the bushing 8 by a fastener 10.

[0056] Specifically, a threaded hole is provided on the side wall of the bushing 8, and the fastener 10 is threadedly connected to the threaded hole. The side wall of the output shaft 9 of the motor 4 forms an anti-rotation plane 11, and the first end of the fastener 10 can abut against the anti-rotation plane 11. Through the interaction between the first end of the fastener 10 and the anti-rotation plane 11 of the output shaft 9 of the motor 4, the relative rotation between the bushing 8 of the cross-flow fan 1 and the output shaft 9 of the motor 4 can be restricted, thereby causing the output shaft 9 of the motor 4 to drive the cross-flow fan 1 to rotate.

[0057] The second end of the fastener 10 is located outside the bushing 8. Applying torque to the second end of the fastener 10 causes the fastener 10 to rotate relative to the bushing 8, which can bring the first end of the fastener 10 closer to or further away from the anti-rotation plane 11 of the output shaft 9 of the motor 4.

[0058] When the first end of the fastener 10 is pressed against the anti-rotation plane 11 of the output shaft 9 of the motor 4, the bushing 8 of the cross-flow fan 1 will neither rotate relative to the output shaft 9 of the motor 4 nor move relative to the output shaft 9 of the motor 4 along the axial direction of the cross-flow fan 1. At this time, it is considered that the second end of the cross-flow fan 1 is connected to the output shaft 9 of the motor 4.

[0059] A gap is created between the second end of the fastener 10 and the anti-rotation plane 11 of the output shaft 9 of the motor 4, so that the cross-flow fan 1 can move relative to the output shaft 9 of the motor 4 along its own axial direction. At this time, it is considered that the second end of the cross-flow fan 1 is disconnected from the output shaft 9 of the motor 4.

[0060] The bushing 8 is located inside the cross-flow fan 1. In this embodiment, a first clearance notch 13 is provided on the target blade 12 of the cross-flow fan 1, as shown in the figure. Figure 6 and Figure 7 The target blade 12 is located on the side of the bushing 8 near the second end of the fastener 10, and along the axial direction of the threaded hole, the projected area of ​​the target blade 12 at least partially overlaps with the projected area of ​​the fastener 10.

[0061] The first clearance notch 13 corresponds to the fastener 10 and is used to allow the torque output end of the torque tool to enter the interior of the cross-flow fan 1 so that the torque output end of the torque tool can be connected to the second end of the fastener 10 to apply torque to the fastener 10.

[0062] Specifically, the fastener 10 includes a screw, with the nut end of the screw being the second end of the fastener 10. The screw nut is a hexagonal prism, in which case a torque wrench can be used as the torque tool. The end face of the screw nut end is provided with a torque groove, in which case a screwdriver can be used as the torque tool.

[0063] In this embodiment of the utility model, the volute body includes a volute plate 14, a volute tongue plate 2, an end plate 15, and a motor mounting base.

[0064] The volute plate 14 and the volute tongue plate 2 are arranged opposite to each other, forming a volute space between them. There is a gap between the air inlet end of the volute plate 14 and the air inlet end of the volute tongue plate 2 to form a volute air inlet. The end plate 15 is disposed at the first end of the volute plate 14 and the volute tongue plate 2, and is disposed in the end plate 15 through a hole. The end cover 3 is detachably connected to the end plate 15.

[0065] The motor mounting base is located at the second end of the volute plate 14 and the volute tongue plate 2, and is used to mount the motor 4.

[0066] The connection between end plate 15 and end cover 3 can be achieved by connecting bolts.

[0067] In this embodiment, the motor mounting base includes a base 16 and a cover 17. The base 16 is fixedly disposed at the second end of the volute plate 14. The side of the base 16 facing the air inlet of the volute is provided with an open first receiving groove.

[0068] The cover 17 has an open second receiving groove. When the cover 17 is connected to the base 16, the open end of the second receiving groove connects with the open end of the first receiving groove, forming a receiving space for accommodating the motor 4. The cover 17 and the base 16 are detachably connected. When it is necessary to disassemble or assemble the motor 4, the cover 17 can be removed from the base 16, thus facilitating the disassembly and assembly of the motor 4.

[0069] In a specific embodiment, the base 16, end plate 15, volute plate 14 and volute tongue plate 2 can be integrally formed to improve the stability of the motor mounting base and the volute body and reduce assembly errors.

[0070] In this embodiment of the present invention, a first process flange 18 is provided on the side of the end cover 3 near the cross-flow fan 1. The first process flange 18 extends circumferentially along the cross-flow fan 1. (Refer to...) Figure 8 The first process protrusion 18 wraps around the periphery of the first end of the cross-flow fan 1.

[0071] The end of the pressure cap 17 near the cross-flow fan 1 is provided with a second process flange 19, which extends circumferentially along the cross-flow fan 1, as shown in the figure. Figure 7 and Figure 9 The second process protrusion 19 wraps around the periphery of the second end of the cross-flow fan 1.

[0072] By combining the motor mounting base, the second process flange 19, the end cover 3, and the first process flange 18, airflow can be effectively prevented from entering the cross-flow fan 1 from both ends, thus effectively reducing noise.

[0073] Along the axial direction of the threaded hole, the projected area of ​​the second process flange 19 at least partially overlaps with the projected area of ​​the fastener 10. At this time, a second clearance notch 20 is provided on the second process flange 19, as shown in the reference section. Figure 6 and Figure 7 The second clearance notch 20 is located on the side of the pressure cap 17 corresponding to the air inlet of the volute. By rotating the cross-flow fan 1, the second clearance notch 20 can be aligned with the fastener 10, allowing the torque output end of the torque tool to enter the interior of the cross-flow fan 1, ensuring that the torque tool can smoothly apply torque to the fastener 10, avoiding the influence of the pressure cap 17 on the operating angle of the torque tool, and ensuring ease of operation.

[0074] In summary, the cross-flow fan provided by this utility model embodiment can solve the problem of inconvenient maintenance and replacement of the cross-flow fan 1 of the hoist, avoid the risk of the motor 4 falling, improve the disassembly and assembly efficiency of the cross-flow fan 1, improve the assembly quality, and ensure the stability of the cross-flow fan.

[0075] On the other hand, this embodiment of the present invention also provides a drop-off machine, including the cross-flow fan provided in any of the above embodiments. The cross-flow fan provided in any of the above embodiments has the advantage of being easy to maintain and replace the cross-flow fan 1. Therefore, the drop-off machine in this embodiment has the advantage of being easy to maintain. The derivation process of the beneficial effects of the drop-off machine in this embodiment of the present invention is largely similar to the derivation process of the beneficial effects of the cross-flow fan described above, so it will not be repeated here.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A cross-flow fan, characterized in that, include: Cross-flow fan (1); The volute includes a volute body and an end cap (3). The volute body has a volute space inside. The cross-flow fan (1) is disposed in the volute space. The first end of the volute body is provided with a through hole. Along the axial direction of the cross-flow fan (1), the projection area of ​​the cross-flow fan (1) is located inside the projection area of ​​the through hole. The end cap (3) is disposed in the through hole. The end cap (3) is detachably connected to the volute body. The first end of the cross-flow fan (1) is rotatably connected to the end cap (3). The motor (4) is located at the second end of the volute body, and the second end of the cross-flow fan (1) is detachably connected to the output shaft (9) of the motor (4).

2. The cross-flow fan according to claim 1, characterized in that, The end cap (3) is provided with a bearing seat (7), and an oil-impregnated bearing (6) is fixed inside the bearing seat (7). The first end of the cross-flow fan (1) has a rotating shaft (5) which is inserted into the inner hole of the oil-impregnated bearing (6).

3. The cross-flow fan according to claim 2, characterized in that, The second end of the cross-flow fan (1) has a bushing (8), the output shaft (9) of the motor (4) extends into the bushing (8), and the output shaft (9) of the motor (4) is connected to the bushing (8) by a fastener (10). The bushing (8) has a threaded hole on its side wall. The fastener (10) is threadedly connected to the threaded hole. The output shaft (9) of the motor (4) has an anti-rotation plane (11) on its side wall. The first end of the fastener (10) abuts against the anti-rotation plane (11), and the second end of the fastener (10) is located outside the bushing (8).

4. The cross-flow fan according to claim 3, characterized in that, The bushing (8) is located inside the cross-flow fan (1), and the target blade (12) of the cross-flow fan (1) is provided with a first clearance notch (13), which is adapted to allow the torque output end of the torque tool to enter the interior of the cross-flow fan (1). The target blade (12) is located on the side of the bushing (8) near the second end of the fastener (10), and along the axial direction of the threaded hole, the projection area of ​​the target blade (12) at least partially overlaps with the projection area of ​​the fastener (10).

5. The cross-flow fan according to claim 3, characterized in that, The volute body includes: The volute plate (14) and the volute tongue plate (2) are arranged opposite to each other, and the volute space is formed between the volute plate (14) and the volute tongue plate (2). There is a gap between the air inlet end of the volute plate (14) and the air inlet end of the volute tongue plate (2) to form the volute air inlet. An end plate (15) is disposed at the first end of the volute plate (14) and the volute tongue plate (2), and the through hole is disposed on the end plate (15). A motor mounting base is disposed at the second end of the volute plate (14) and the volute tongue plate (2), and the motor mounting base is adapted to install the motor (4).

6. The cross-flow fan according to claim 5, characterized in that, The motor mounting base includes: The base (16) is fixedly disposed at the second end of the volute plate (14), and the base (16) has an open first receiving groove on the side facing the air inlet of the volute. The pressure cap (17) has an open second receiving groove. The pressure cap (17) is detachably connected to the base (16). The second receiving groove is connected to the first receiving groove to form a receiving space for accommodating the motor (4).

7. The cross-flow fan according to claim 6, characterized in that, The end cap (3) is provided with a first process protrusion (18) on the side near the cross-flow fan (1), the first process protrusion (18) extends circumferentially along the cross-flow fan (1), and the pressure cap (17) is provided with a second process protrusion (19) on the end near the cross-flow fan (1), the second process protrusion (19) extends circumferentially along the cross-flow fan (1). Along the axial direction of the threaded hole, the projection area of ​​the second process protrusion (19) at least partially overlaps with the projection area of ​​the fastener (10); the second process protrusion (19) is provided with a second clearance notch (20), which is adapted to allow the torque output end of the torque tool to enter the interior of the cross-flow fan (1).

8. The cross-flow fan according to claim 6, characterized in that, The base (16), the end plate (15), the volute plate (14) and the volute tongue plate (2) are integrally formed.

9. The cross-flow fan according to any one of claims 2-8, characterized in that, The bearing housing (7) is located on the side of the end cover (3) away from the cross-flow fan (1). One end of the bearing housing (7) is connected to the end cover (3), and the other end of the bearing housing (7) extends away from the end cover (3). A reinforcing rib (21) is provided between the bearing housing (7) and the end cover (3).

10. A hoisting machine, characterized in that, Including the cross-flow fan as described in any one of claims 1 to 9.

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