CN214249885U - Fan blade supporting structure, air conditioner outdoor unit and air conditioner - Google Patents

Abstract

The utility model provides an outer machine of fan blade bearing structure, air-conditioner, air conditioner, fan blade bearing structure wherein, including the fan blade, the fan blade suit still includes motor support and axle head support piece on driving motor's power output shaft, driving motor connect in on the motor support, axle head support piece connect in on power output shaft's the free end. According to the utility model discloses, realize the bi-polar to driving motor's power output shaft and support, optimized power output shaft's atress, can improve the steadiness and the reliability of motor efficiency, life-span, structure, effectively reduce fan blade and casing shake, unusual noise.

Description

Fan blade supporting structure, air conditioner outdoor unit and air conditioner

Technical Field

The utility model belongs to the technical field of air conditioning, concretely relates to fan blade bearing structure, outer machine of air-conditioner, air conditioner.

Background

In the existing air conditioner outdoor unit, especially the side air outlet outdoor unit, most of motors adopt axial flow fans, axial flow fan blades are generally fixed on a motor shaft, the motor shaft bears the gravity of the fan blades, and the force can increase the pressure and friction force on the motor shaft and reduce the motor efficiency; the axial flow fan blade is generally of a 3-blade structure, certain deviation exists in the process from design to manufacture, a motor support and a motor shaft can deform to a certain extent after assembly, complete balance cannot be achieved even if the fan blade is subjected to dynamic balance, the center of gravity of the fan blade can change periodically and slightly during rotation after the motor shaft deforms or is slightly assembled with deviation and dislocation, slight vibration and shaking can be generated, and after the operation time is prolonged, the shaking is increased along with the increase of the deviation, and the hidden dangers of abnormal noise, interference and collision and the like are also increased. Further, the center of gravity of the fan blade may shift due to processing deviation or dynamic balance deviation or deformation of the assembled motor bracket, etc., so that the fan blade may shake during rotation.

The existing fan blade fixing mode is a cantilever beam structure fixed on a single side, the larger the mass of the air conditioner fan blade is, the larger the structural member deformation is, the larger the vibration amplitude is, abnormal noise, abnormal sound, shell vibration and other conditions can be caused due to the fact that a screw is loosened after long-time operation, meanwhile, the larger the mass of the air conditioner fan blade is, the larger the force required to be provided by a motor shaft is, the conditions of increased stress of the motor shaft, increased friction force, reduced motor efficiency and the like are caused, and the conditions are unfavorable for energy consumption, noise and reliability. For example, the axial flow fan blade for the 1.5-2P air conditioner external unit in the market has a weight of about 1kg, and the axial flow fan blade for the 3P air conditioner external unit has a larger weight, so that the motor and the motor support of the existing air conditioner generally need 4-6 screws for fixing (4 for the 1.5-2P air conditioner external unit), and the upper end and the lower end of the motor support and the shell need to be fixed so as to provide a larger force for supporting the gravity of the fan blade and the motor.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model is to provide a fan blade bearing structure, outer machine of air-conditioner, air conditioner realizes the bi-polar to driving motor's power output shaft and supports, has optimized power output shaft's atress, can improve the steadiness and the reliability of motor efficiency, life-span, structure, effectively reduces fan blade and casing shake, unusual noise.

In order to solve the problem, the utility model provides a fan blade bearing structure, including the fan blade, the fan blade suit still includes motor support and axle head support piece on driving motor's power output shaft, driving motor connect in on the motor support, axle head support piece connect in on power output shaft's the free end.

Preferably, the motor bracket comprises a bracket body, a motor mounting through hole for accommodating a housing of the driving motor is configured on the bracket body, the motor mounting through hole has at least two connecting seats in the circumferential direction, and a connecting bolt can form a radial connection with the driving motor through at least two connecting seats.

Preferably, the driving motor comprises a switching shell, the switching shell is sleeved on the power output shaft and connected to the end face of the output side of the shell, and a threaded seat corresponding to the connecting seat is configured on the switching shell.

Preferably, the motor bracket includes a bracket body, the bracket body is configured with a motor mounting through hole for receiving a housing of the driving motor, and the motor mounting through hole has a snap connection structure in a circumferential direction.

Preferably, the bottom of the bracket body is provided with a fixed support leg, and the fixed support leg is detachably connected with a chassis of an outdoor unit of an air conditioner.

Preferably, the shaft end support comprises an air outlet grille, the air outlet grille is provided with a solid part and a grille part around the solid part, one side of the solid part, facing the fan blade, is provided with a support structure, and the free end of the power output shaft is rotatably connected with the support structure.

Preferably, the support structure comprises a bearing seat formed on the solid portion and a bearing located in the bearing seat, the bearing being fitted on the free end.

Preferably, the support structure further comprises a cushion ring in an annular gap formed between a central receiving bore wall of the bearing seat and an outer peripheral wall of the bearing.

Preferably, the buffer ring is made of hard rubber; and/or the bearing seat and the solid part are integrally formed in an injection molding mode.

Preferably, a plurality of first ribs extending towards the center of the central accommodating hole are arranged on the hole wall of the central accommodating hole of the bearing seat, the first ribs are arranged along the circumferential direction of the central accommodating hole at intervals, and a plurality of second ribs are arranged on the outer circumferential wall of the buffer ring.

Preferably, the hole of the central receiving hole of the bearing seat is provided with a plurality of clamping hooks, and the plurality of clamping hooks are arranged at intervals along the circumferential direction of the hole of the central receiving hole so as to form an axial stop for the buffer ring in the central receiving hole.

Preferably, a gap extending in the axial direction of the bearing seat is provided between the root of the hook and the wall of the orifice.

Preferably, the damping ring has a bearing hole for fitting the bearing and a plurality of stress dispersion holes around an orifice of the bearing hole.

Preferably, a vent hole is formed in a hole bottom wall of the bearing hole.

Preferably, there are a plurality of strengthening ribs between the seat bottom of the bearing seat and the edge of the solid portion; and/or, have a plurality of third ribs on the periphery wall of bearing frame, it is a plurality of the third rib is along the circumference interval setting of center accommodation hole.

The utility model also provides an outdoor machine of air-conditioner, including foretell fan blade bearing structure.

The utility model also provides an air conditioner, including foretell air conditioner outer machine.

The utility model provides a pair of fan blade bearing structure, outer machine of air-conditioner, air conditioner, power output shaft's one end is passed through motor support realizes supporting, power output shaft's the other end (also being the free end) passes through axle head support piece realizes supporting to realize the bi-polar to driving motor's power output shaft and support, optimized power output shaft's atress, this steadiness and the reliability that can improve motor efficiency, life-span, structure, effectively reduce fan blade and casing shake, unusual noise.

Drawings

Fig. 1 is a schematic structural view of a fan blade support structure according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a partial cross-sectional view of FIG. 1;

FIG. 4 is a schematic disassembled view of FIG. 1;

FIG. 5 is a partial enlarged view of the portion B in FIG. 4;

FIG. 6 is an enlarged view of a portion of FIG. 4 at C;

FIG. 7 is an enlarged view of a portion of FIG. 4 at D;

FIG. 8 is an enlarged view of a portion of FIG. 4 at E;

FIG. 9 is a perspective view of the cushion ring of FIG. 4;

FIG. 10 is a front view of FIG. 9;

FIG. 11 is a schematic cross-sectional view of the bearing of FIG. 5;

fig. 12 is a schematic view (partially shown) illustrating an internal structure of an outdoor unit for an air conditioner according to another embodiment of the present invention.

The reference numerals are represented as:

1. a fan blade; 2. a drive motor; 21. a power take-off shaft; 22. a housing; 23. a transition housing; 24. a threaded seat; 3. a motor bracket; 31. a stent body; 32. a motor mounting through hole; 33. a connecting seat; 34. a fixed leg; 4. a shaft end support; 41. an air outlet grille; 42. a solid portion; 421. a reinforcing rib; 43. a grid portion; 44. a support structure; 441. a bearing seat; 4411. a first rib; 4412. a third rib; 442. a bearing; 4421. a housing; 4422. a carbocyclic ring; 4423. an end cap; 443. a buffer ring; 4431. a second rib; 4432. a bearing bore; 4433. a stress dispersion hole; 4434. an exhaust hole; 444. a hook is clamped; 445. a gap; 100. a chassis; 101. a panel; 102. a fan blade locking nut; 103. a heat exchanger.

Detailed Description

Referring to fig. 1 to 12 in combination, according to the embodiment of the present invention, a fan blade supporting structure is provided, including a fan blade 1, the fan blade 1 is sleeved on a power output shaft 21 of a driving motor 2, it can be understood that the fan blade 1 is locked on a preset position of the power output shaft 21 through a fan blade locking nut 102, and further includes a motor bracket 3 and a shaft end supporting member 4, the driving motor 2 is connected (preferably detachably connected) to the motor bracket 3, and the shaft end supporting member 4 is connected to a free end of the power output shaft 21 (that is, an end of the power output shaft 21 extending out of the driving motor 2). In the technical scheme, one end of the power output shaft 21 is passed through the motor support 3 is realized supporting, the other end (also free end) of the power output shaft 21 is passed through the shaft end supporting piece 4 is realized supporting, so that double-end supporting is realized for the power output shaft of the driving motor, the stress of the power output shaft is optimized, the motor efficiency, the service life and the stability and the reliability of a structural member can be improved, and the shaking and abnormal noise of the fan blades and the shell are effectively reduced.

The driving motor 2 can be bolted to the motor bracket 3 by means of 4 bolts in the prior art, and in some embodiments, the motor bracket 3 includes a bracket body 31, a motor mounting through hole 32 configured on the bracket body 31 for accommodating the housing 22 of the driving motor 2 is formed in the circumferential direction of the motor mounting through hole 32, the motor mounting through hole 32 has at least two connecting seats 33, through at least two of the connecting seats 33, the connecting bolt can form a radial connection with the driving motor 2, the motor mounting through hole 32 is used for accommodating at least part of the housing 22 therein, so as to facilitate pre-positioning of the driving motor 2 in assembly, and on the other hand, the 2 bolts connected in the radial direction can reduce the operation space and reduce the assembly workload. Further, the driving motor 2 includes a switching housing 23, the switching housing 23 is sleeved on the power output shaft 21 and connected to an output side end face of the housing 22, a threaded seat 24 corresponding to the connecting seat 33 is configured on the switching housing 23, specifically, the switching housing 23 and the mounting hole on the housing 22 of the driving motor 2 are connected into a whole by a bolt, and then the connection with the bracket body 31 is realized by the threaded seat 24, so that the structural improvement of the existing driving motor is not needed, and the modification cost can be greatly reduced. In other embodiments, the motor mounting through hole 32 has a snap connection structure along the circumference, and in this case, the driving motor 2 also has the aforementioned adaptor housing 23, and the adaptor housing 23 is snap-connected to the bracket body 31, so as to further facilitate the convenient assembly of the driving motor 2 and the motor bracket 3.

The bottom of support body 31 has fixed stabilizer blade 34, can dismantle between fixed stabilizer blade 34 and the outer machine of air-conditioner's chassis 100 and be connected, need emphasize, motor support 3 among this technical scheme is different from the motor support among the prior art, the utility model discloses a motor support only is connected and is guaranteed through fixed stabilizer blade 34 that is in its bottom with chassis 100 motor support's positional reliability, and its top does not set up corresponding fixed connection structure, need not to form between rather than adjacent heat exchanger 103 or the panel 101 (not shown in the figure) and is connected, simplifies its assembling process on the one hand, and on the other hand then has improved air conditioner heat exchange efficiency owing to reduced the superstructure and has reduced the windage.

The shaft end support 4 may be another bracket connected to the chassis 100, and theoretically, it may be enough to form a pivot connection to the free end and perform a supporting function, and preferably, the shaft end support 4 includes an air outlet grille 41, the air outlet grille 41 includes a solid portion 42 and a grille portion 43 surrounding the solid portion 42, a supporting structure 44 is disposed on a side of the solid portion 42 facing the fan blade 1, the free end of the power output shaft 21 is rotatably connected to the supporting structure, and the space inside the outdoor unit of the air conditioner can be optimized by using the air outlet grille 41 as the shaft end support 4, so that the structure of the internal components is more reasonable and compact.

In some embodiments, the supporting structure 44 includes a bearing seat 441 formed on the solid portion 42 and a bearing 442 located in the bearing seat 441, the bearing 442 is sleeved on the free end, and preferably, when the air outlet grille 41 is formed by integral injection molding, the bearing seat 441 and the solid portion 42 are also preferably integrally injection molded, so as to simplify the assembling process and improve the structural strength of the bearing seat 441.

Further, the supporting structure 44 further includes a buffer ring 443, the buffer ring 443 is located in an annular gap formed between a hole wall of the central receiving hole of the bearing seat 441 and an outer peripheral wall of the bearing 442, and specifically, the buffer ring 443 is made of hard rubber, so that the buffer ring 443 has supporting rigidity and can also effectively compensate shaft runout of the power output shaft 21, and further, the force applied to the air outlet grille 41 is reduced, and damage to the air outlet grille is prevented.

In some embodiments, the hole wall of the center receiving hole of the bearing seat 441 has a plurality of first ribs 4411 extending toward the center of the center receiving hole, the plurality of first ribs 4411 are arranged at intervals along the circumferential direction of the center receiving hole, the plurality of first ribs 4411 extend in parallel along the hole depth direction of the center receiving hole, the outer circumferential wall of the cushion ring 443 is provided with second ribs 4431 corresponding to the plurality of first ribs 4411 one by one, and the first ribs 4411 and the second ribs 4431 cooperate with each other, so that the rotation of the cushion ring 443 in the center receiving hole can be prevented, and the vibration noise can be further reduced.

Further, the opening of the central receiving hole of the bearing seat 441 is provided with a plurality of hooks 444, the plurality of hooks 444 are circumferentially arranged along the opening of the central receiving hole at intervals so as to form an axial stop for the buffer ring 443 positioned in the central receiving hole, preferably, a gap 445 extending in the axial direction of the bearing seat 441 is arranged between the root of the hook 444 (i.e. the connection position of the hook 444 and the hole wall of the central receiving hole) and the wall body of the opening, and the arrangement of the gap 445 can enable the hook 444 to have a larger radial deformation, so that the buffer ring 443 can be more smoothly embedded. Further, the stop surface of the hook 444 is flush with the outer end plane of the hole, so as to ensure that the buffer ring 443 can be reliably stopped in the bearing seat 441 and is not easy to fall off.

The cushion ring 443 has a bearing hole 4432 for fitting the bearing 442, a plurality of stress dispersion holes 4433 (specifically, blind holes) are provided around the orifice of the bearing hole 4432, and the plurality of stress dispersion holes 4433 can provide a larger amount of radial deformation to the orifice of the bearing hole 4432, so that the fitting of the bearing 442 can be smoother, and the material consumption and cost can be reduced. Further, a gas discharge hole 4434 is formed in a hole bottom wall of the bearing hole 4432 to prevent a sealing region formed between the bearing 442 and the hole bottom wall from blocking gas when the bearing 442 is fitted, and thus, it is difficult to fit the bearing 442. The bearing 442 specifically comprises a housing 4421, wherein a carbon ring 4422 is embedded in the housing 4421, the carbon ring 4422 has good wear resistance and is used for bearing the power output shaft 21, and one end of the housing 4421 is embedded with a 4423 end cover for preventing the carbon ring 4422 from falling off.

In order to improve the structural strength of the outlet grille 41, it is preferable that a plurality of reinforcing ribs 421 are provided between the base of the bearing housing 441 and the edge of the solid portion 42; and/or the outer peripheral wall of the bearing seat 441 is provided with a plurality of third ribs 4412, and the third ribs 4412 are arranged at intervals along the circumferential direction of the central accommodating hole.

According to the utility model discloses an embodiment still provides an outdoor machine of air-conditioner, including foretell fan blade bearing structure, heat exchanger 103 and panel 101, the ventilation hole has been constructed on the panel 101, air-out grid 41 install in on the ventilation hole, fan blade bearing structure set up in air-out grid 41 with in the space between the heat exchanger 103.

According to the utility model discloses an embodiment still provides an air conditioner, including foretell outdoor machine of air-conditioner.

It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (17)

1. The fan blade supporting structure is characterized by comprising a fan blade (1), wherein the fan blade (1) is sleeved on a power output shaft (21) of a driving motor (2), the fan blade supporting structure further comprises a motor support (3) and a shaft end supporting piece (4), the driving motor (2) is connected onto the motor support (3), and the shaft end supporting piece (4) is connected onto the free end of the power output shaft (21).

2. The fan blade support structure according to claim 1, wherein the motor support (3) comprises a support body (31), a motor mounting through hole (32) for accommodating a shell (22) of the driving motor (2) is formed in the support body (31), the motor mounting through hole (32) is circumferentially provided with at least two connecting seats (33), and a connecting bolt can be radially connected with the driving motor (2) through at least two connecting seats (33).

3. The fan blade support structure according to claim 2, wherein the driving motor (2) comprises a switching housing (23), the switching housing (23) is sleeved on the power output shaft (21) and connected to an output side end face of the outer shell (22), and a threaded seat (24) corresponding to the connecting seat (33) is configured on the switching housing (23).

4. The blade support structure of claim 2, wherein the bracket body (31) has a fixing leg (34) at the bottom thereof, and the fixing leg (34) is detachably connected to the chassis (100) of the outdoor unit of the air conditioner.

5. The fan blade support structure according to claim 1, wherein the motor support (3) comprises a support body (31), a motor mounting through hole (32) for accommodating the shell (22) of the driving motor (2) is formed in the support body (31), and the motor mounting through hole (32) is provided with a snap connection structure in the circumferential direction.

6. The blade support structure of claim 1, wherein the shaft end support (4) comprises an air outlet grille (41), the air outlet grille (41) has a solid portion (42) and a grille portion (43) surrounding the solid portion (42), a support structure (44) is provided on a side of the solid portion (42) facing the blade (1), and a free end of the power output shaft (21) is rotatably connected with the support structure.

7. The blade support structure of claim 6, wherein the support structure (44) comprises a bearing seat (441) formed on the solid portion (42) and a bearing (442) within the bearing seat (441), the bearing (442) being sleeved on the free end.

8. The blade support structure of claim 7, wherein the support structure (44) further comprises a cushion ring (443), the cushion ring (443) being in an annular gap formed between a central receptacle bore wall of the bearing seat (441) and an outer peripheral wall of the bearing (442).

9. The fan blade support structure according to claim 8, wherein the cushion ring (443) is made of hard rubber; and/or the bearing seat (441) and the solid part (42) are integrally injection-molded.

10. The blade support structure of claim 8, wherein the bearing seat (441) has a plurality of first ribs (4411) extending toward the center of the central receiving hole, the first ribs (4411) are arranged at intervals along the circumference of the central receiving hole, and the buffer ring (443) has a plurality of second ribs (4431) on the outer circumferential wall.

11. The fan blade support structure of claim 8, wherein the opening of the central receiving hole of the bearing seat (441) is provided with a plurality of hooks (444), and the plurality of hooks (444) are circumferentially spaced along the opening of the central receiving hole to form an axial stop for the buffer ring (443) in the central receiving hole.

12. The blade support structure of claim 11, wherein there is a gap (445) between the root of the catch (444) and the wall of the aperture extending in the axial direction of the bearing seat (441).

13. The blade support structure of claim 8, wherein the cushion ring (443) has a bearing hole (4432) for embedding the bearing (442) and a plurality of stress dispersion holes (4433) around the orifice of the bearing hole (4432).

14. The blade support structure of claim 13, wherein the bore bottom wall of the bearing bore (4432) is configured with an exhaust vent (4434).

15. The blade support structure of claim 8, wherein a plurality of stiffening ribs (421) are provided between the base of the bearing block (441) and the edge of the solid portion (42); and/or the outer peripheral wall of the bearing seat (441) is provided with a plurality of third ribs (4412), and the third ribs (4412) are arranged at intervals along the circumferential direction of the central accommodating hole.

16. An outdoor unit for an air conditioner, comprising the blade support structure of any one of claims 1 to 15.

17. An air conditioner comprising the outdoor unit of claim 16.

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