CN221237923U - Indoor unit of air conditioner - Google Patents

Abstract

The application discloses an air conditioner indoor unit, and belongs to the technical field of air treatment. The indoor unit of the air conditioner comprises: a housing; at least three fans arranged in the shell; the motor is connected between two adjacent fans; the rotating shaft is connected with a motor shaft of the motor to form a driving shaft, and the driving shaft is connected with the fan and used for driving the fan to rotate; the bearing is connected to one end, far away from the motor, of the rotating shaft; the bearing pedestal is provided with a mounting cavity for adapting to the bearing, and the cooperation of the mounting cavity and the bearing is spherical. The air conditioner indoor unit ensures the centering of the rotating shaft and the bearing, thereby avoiding bearing sound in the starting or running process.

Description

Indoor unit of air conditioner

Technical Field

The application relates to the technical field of air treatment, in particular to an air conditioner indoor unit.

Background

The indoor unit of air conditioner adopts centrifugal fan, and centrifugal fan and motor assembly are in the same place, and the motor drives centrifugal fan operation through driving rotor rotation. According to the indoor power, the number of the centrifugal fans in the indoor unit is different, and as a single motor can only connect two centrifugal fans, when the number of the centrifugal fans needed by the indoor unit is 3 or more, one rotating shaft needs to be added to connect redundant centrifugal fans.

Because the added rotating shaft is connected with the motor shaft through the coupler, the complete centering cannot be ensured in the assembly process, and bearing sound is generated by collision and grinding between the rotating shaft and the bearing, so that the centering problem generated by the assembly of the rotating shaft and the bearing needs to be solved.

Disclosure of utility model

The application provides an air conditioner indoor unit, which ensures the centering of a rotating shaft and a bearing, thereby avoiding bearing sound in the starting or running process.

In one aspect of the present application, an indoor unit of an air conditioner includes: a housing; at least three fans arranged in the shell; the motor is connected between two adjacent fans; the rotating shaft is connected with a motor shaft of the motor to form a driving shaft, and the driving shaft is connected with the fan and is used for driving the fan to rotate; the bearing is connected to one end of the rotating shaft far away from the motor; the bearing pedestal is provided with a mounting cavity for adapting to the bearing, and the matching surface of the mounting cavity and the bearing is a spherical surface.

Through adopting sphere matched structure between bearing and the bearing frame that will support the pivot for the bearing can rotate certain angle relative to the bearing frame, thereby under the condition that the pivot installation is not centering, the bearing can be under the effect of not centering eccentric force automatic adjustment angle, guarantees the centering of pivot and bearing, has avoided starting or the bearing sound that produces because of not centering in the operation.

In some embodiments, the mounting cavity and the mating surface of the bearing are the same basic dimensions.

In some embodiments, a perforation is arranged at one end of the bearing seat, which is close to the motor, and the rotating shaft penetrates through the perforation; the inner diameter of the through hole and the outer diameter of the rotating shaft are radially spaced.

In some embodiments, the end of the bearing housing adjacent to the motor is provided with a stop portion having an inner diameter smaller than the minimum outer diameter of the bearing for blocking the bearing.

In some embodiments, the spherical center of the mounting cavity coincides with an axial midpoint of the mounting cavity.

In some embodiments, the air conditioning indoor unit further comprises: the first supporting plate is fixedly connected in the shell; the second supporting plate is connected with the first supporting plate; a support ring connected between the first support plate and the second support plate; the bearing seat is connected in the supporting ring.

In some embodiments, the air conditioning indoor unit further comprises: the volute is covered outside the fan and comprises a first volute and a second volute which are connected with each other; the first supporting plate and the first volute are integrally formed; the second support plate and the second volute are integrally formed.

In some embodiments, the first support plate or the second support plate is provided with a first fixing groove; the support ring includes: a ring body in which a bearing housing is installed; a positioning edge part formed by extending outwards the peripheral part of the ring body; the fixed edge part is arranged at intervals with the positioning edge part, the fixed edge part and the positioning edge part are inserted into the first fixed groove, and the fixed edge part is clamped with the side wall of the first fixed groove.

In some embodiments, the first fixing groove is divided into a first sub-fixing groove and a second sub-fixing groove by a division plate; the positioning edge is adapted to the first sub-fixing groove, and the fixing edge is inserted into the second sub-fixing groove; the ring body is abutted against the partition plate.

In another aspect of the present application, an indoor unit of an air conditioner includes: a housing; at least three fans arranged in the shell; the motor is connected between two adjacent fans; the rotating shaft is connected with a motor shaft of the motor to form a driving shaft, and the driving shaft is connected with the fan and is used for driving the fan to rotate; the bearing is connected to one end of the rotating shaft far away from the motor; the bearing pedestal is provided with a mounting cavity for adapting to the bearing, the matching surfaces of the mounting cavity and the bearing are spherical surfaces, and an axial interval is arranged between the mounting cavity and the bearing along the axial direction of the bearing.

Drawings

Fig. 1 illustrates a perspective view of an air conditioning indoor unit according to some embodiments;

fig. 2 illustrates a cross-sectional view of an air conditioning indoor unit according to some embodiments;

FIG. 3 illustrates a perspective view of a fan assembly of an air conditioning indoor unit according to some embodiments;

FIG. 4 illustrates a schematic diagram of a volute of an air conditioning indoor unit according to some embodiments;

Fig. 5 illustrates an exploded view of a scroll casing and a rotating shaft of an air conditioning indoor unit according to some embodiments;

FIG. 6 illustrates a cross-sectional view of an air conditioning indoor unit at a bearing according to some embodiments;

FIG. 7 illustrates a schematic view of a rotating shaft and bearings of an air conditioning indoor unit according to some embodiments;

Fig. 8 illustrates a cross-sectional view of a bearing housing of an air conditioning indoor unit according to some embodiments;

Fig. 9 and 10 are schematic views showing a state in which a rotation shaft and a bearing of an indoor unit of an air conditioner are centered according to some embodiments;

FIG. 11 illustrates a schematic view of a first scroll casing of an air conditioning indoor unit according to some embodiments;

fig. 12 illustrates a schematic diagram of a second volute of an air conditioning indoor unit according to some embodiments;

Fig. 13 and 14 illustrate perspective views of a support ring of an air conditioner indoor unit according to some embodiments;

In the above figures: 10. a housing; 11. an inlet; 12. an outlet; 20. a heat exchanger; 21. a water receiving tray; 30. a fan assembly; 31. a motor; 311. a motor shaft; 32. a fan; 321. a first fan; 322. a second fan; 323. a third fan; 33. a volute; 331. a first volute; 332. a second volute; 333. a support plate; 334. a first support plate; 3341. a first fixing groove; 3344. a through groove; 3345. a partition plate; 3346. a first sub-fixing groove; 3347. a second sub-fixing groove; 3348. reinforcing ribs; 335. a second support plate; 3351. a second fixing groove; 34. a middle partition plate; 35. a rotating shaft; 36. a bearing; 361. an outer peripheral surface; 37. a support ring; 371. a ring body; 3711. a limit protrusion; 3712. a stop protrusion; 372. an extension; 373. positioning the edge part; 3731. a notch; 3732. a notch; 374. fixing the edge part; 3741. a fastening part; 375. limit edge parts; 38. a bearing seat; 381. a mounting cavity; 3811. an inner peripheral surface; 382. perforating; 383. a stop surface; 384. a stop portion; 385. and a limit groove.

Detailed Description

For the purposes of making the objects and embodiments of the present application more apparent, an exemplary embodiment of the present application will be described in detail below with reference to the accompanying drawings in which exemplary embodiments of the present application are illustrated, it being apparent that the exemplary embodiments described are only some, but not all, of the embodiments of the present application.

In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

The terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second" or the like may include one or more such features, either explicitly or implicitly. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

Embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1 and 2, an air conditioner indoor unit according to an embodiment of the present application includes: a housing 10, a heat exchanger 20 and a fan assembly 30.

The housing 10 forms the general appearance of an air conditioning indoor unit. The housing 10 is formed with an inlet 11 and an outlet 12, and air can enter the housing 10 through the inlet 11 and be blown out through the outlet 12.

The heat exchanger 20 is provided in the housing 10 and is disposed on an air moving path from the inlet 11 to the outlet 12. The heat exchanger 20 serves to absorb heat from or transfer heat to the air introduced into the housing 10. A water tray 21 is provided below the heat exchanger 20 to collect moisture condensed in the heat exchanger 20.

A fan assembly 30 is disposed within the housing 10 for forcing air to flow from the inlet 11 to the outlet 12.

Referring to fig. 3, the fan assembly 30 includes a motor 31 and a fan 32. The rotation of the fan 32 serves as a power source for the air flow, and the rotation of the fan 32 is driven by the motor 31.

In some indoor units of air conditioner, two fans 32 are adopted, a motor 31 is arranged between the two fans 32, motor shafts 311 on two sides of the motor 31 are respectively connected with one fan 32, and thus the motor shafts 311 of the motor 31 drive the fans 32 to rotate.

The fan assembly 30 further includes a volute 33, the volute 33 being housed outside the fan 32. The left and right sides of the volute 33 are formed with air suction ports, and the air discharge end of the volute 33 is connected to the middle partition 34. The intermediate partition 34 serves to separate the fan assembly 30 from the heat exchanger 20.

In some indoor units of air conditioners, three or more fans 32 are used to increase the air volume, and in this case, it is necessary to extend the motor shaft 311 of the motor to drive the third or more fans 32 to rotate.

In the present application, three fans are taken as examples for description: referring to fig. 3 to 5, three fans 32 are a first fan 321, a second fan 322, and a third fan 323 from left to right, respectively. The motor 31 is disposed between the first fan 321 and the second fan 322, the motor shaft 311 on the right side of the motor 32 is connected to the second fan 322, and the motor shaft 311 on the left side of the motor 32 is connected to the first fan 321.

The fan assembly 30 further comprises a rotating shaft 35, the left end of the rotating shaft 35 is connected with a motor shaft 311 of the motor 31 through a coupler, and the right end of the rotating shaft 33 is connected to a bearing seat 38 through a bearing 36. The motor shaft 311 and the rotating shaft 33 of the motor 31 form a driving shaft to drive the three fans 32 to rotate.

Referring to fig. 6 to 8, the bearing housing 38 is provided with a mounting cavity 381, the bearing 36 is mounted in the mounting cavity 381, the circumferential surface of the mounting cavity 381 matching with the bearing 36 is spherical, and the circumferential surface of the bearing 36 is also spherical. That is, the inner peripheral surface 3811 of the mounting cavity 381 is spherically fitted with the outer peripheral surface 361 of the bearing 36.

Due to the spherical matching mode, the bearing 36 can rotate in the installation cavity 381, when the rotating shaft 35 is installed in a non-centering mode, the bearing 36 automatically adjusts the angle in the installation cavity 381 under the action of eccentric force generated in the non-centering mode, the centering of the rotating shaft 35 and the bearing 36 is ensured, and further bearing sounds generated in the starting or running process are avoided.

Fig. 9 and 10 show a schematic view of the bearing 36 rotated into a centered condition, with the spherical surface engagement allowing the bearing 36 to rotate within the bearing housing 38, the bearing 36 automatically rotating into a centered condition without the application of a centering eccentric force.

In some embodiments of the present application, the end of the mounting cavity 381 remote from the motor 31 is planar, and the width of the mounting cavity 381 in the axial direction is greater than the width of the bearing 36 in the axial direction, i.e., the mounting cavity 381 and the bearing 36 have an axial spacing in the axial direction that provides rotational space for the bearing 36 within the mounting cavity 381, allowing the bearing 36 to flexibly rotate for self-centering.

Referring to fig. 8, the center point in the axial direction of the installation cavity 381 coincides with the center point of the inner peripheral surface of the installation cavity 381 at the point a, and the center point in the axial direction of the bearing 36 coincides with the center point of the outer peripheral surface of the bearing 36.

According to the embodiment of the application, the inner peripheral surface 3811 of the installation cavity 381 and the outer peripheral surface 361 of the bearing 36 have the clearance fit relationship with the same basic size, so that the bearing seat 38 and the bearing 36 can be matched with each other at a small interval, the radial position centering of the bearing 36 is ensured, and the problem that the bearing 36 deviates from the circle center of the bearing seat 38 due to the action of gravity caused by overlarge radial clearance between the bearing seat 38 and the bearing seat is avoided.

The bearing 36 and the bearing housing 38 may be made of structural steel metal and have wear resistance.

The bearing seat 38 is provided with a perforation 382 towards one end of the motor 31, the perforation 382 is communicated with a mounting cavity 381, and the rotating shaft 35 penetrates through the perforation 382.

The bore 382 has an inner diameter greater than the outer diameter of the shaft 35, with a radial spacing formed between the bore 382 and the shaft 35 that provides a misalignment mounting space for the shaft 35.

In some embodiments, the bearing housing 38 is provided with a stop surface 383 at an end of the mounting cavity 381 remote from the motor 31, the stop surface 383 forming an end surface of the mounting cavity 381, the stop surface 383 being operable to limit axial movement of the bearing 36 to prevent the bearing 36 from escaping the mounting cavity 381 under vibratory impact forces.

The bearing seat 38 is provided with a stop part 384 at one end of the mounting cavity 381 near the motor 31, and the inner diameter of the stop part 384 is smaller than the minimum outer diameter of the bearing 36, so that an axial limiting effect is formed on the bearing 36, and the bearing 36 is prevented from being separated from the mounting cavity 381. In addition, the inner peripheral surface of the stopper 384 forms the through hole 382.

The bearing housing 38 may be a two-piece structure with the bearing 36 mounted in one half of the mounting cavity, then the other half is mated, and finally the two-piece structure may be secured with screws.

One end of the rotating shaft 35, on which the bearing 36 is mounted, is provided with a mounting part with a reduced outer diameter, and the outer diameter of the mounting part is smaller than that of other parts, so that the bearing 36 and the bearing seat 38 with smaller sizes can be matched, and the strength of the rotating shaft 35 can be ensured.

In some embodiments, referring to fig. 4 and 5, the bearing housing 38 is mounted on a support plate 333 within the housing 10. The support plate 333 includes a first support plate 334 and a second support plate 335.

The first support plate 334 is fixedly coupled within the housing 10, the second support plate 335 is coupled to the first support plate 334, and the bearing housing 38 is fixed between the first support plate 334 and the second support plate 335. Specifically, the support plate 333 is located on the right side of the third fan 323. The first support plate 334 is fixedly connected with the middle partition 34, or the first support plate 334 is connected with the volute 33 of the fan assembly 30.

In the embodiment of the present application, the scroll casing 33 includes a first scroll casing 331 and a first scroll casing 332. The first scroll 331 and the second scroll 332 are connected to cover the fan 32.

The first support plate 334 is connected to the right end of the first scroll 331, and the second support plate 335 is connected to the right end of the second scroll 332. When the first scroll 331 is docked with the second scroll 332, the first support plate 334 is docked with the second support plate 335.

Specifically, the first volute 331 is located at the upper end of the second volute 332, and the first volute 331 and the first volute 332 are in a vertically butted structure, so that the first support plate 334 is located at the upper end of the second support plate 335.

Referring to fig. 11 and 12 in combination, the first support plate 334 is provided with a first fixing slot 3341, and an opening of the first fixing slot 3341 faces downward; the second support plate 335 is provided with a second fixing slot 3351, and an opening of the second fixing slot 3351 faces upwards.

When the first scroll 331 is connected to the first scroll 332, the first support plate 334 is vertically abutted to the second support plate 335, and simultaneously, the first fixing groove 3341 is vertically opposite to the second fixing groove 3351, so that the first fixing groove 3341 and the second fixing groove 3351 enclose an installation space; the bearing housing 38 is installed in the installation space.

The first volute 331, the middle partition 34 and the first support plate 334 are integrally formed, the second volute 332 and the second support plate 335 are integrally formed, so that the cost can be reduced, the connecting structure is reduced, and the assembly efficiency is improved.

In some embodiments of the present application, the air conditioner indoor unit further includes a support ring 37, the support ring 37 is installed in an installation space enclosed by the first support plate 334 and the second support plate 335, and the bearing housing 38 is installed in the support ring 37.

The supporting ring 37 can be made of rubber, and the supporting ring 37 is positioned between the bearing seat 38 and the supporting plate 333 to play a role in vibration reduction.

Referring to fig. 6 and 8, an inward concave limit groove 385 is formed on the outer periphery of the bearing seat 38, a limit protrusion 3711 is formed in the support ring 37, and the limit protrusion 3711 is inserted into the limit groove 385 to limit the axial movement of the bearing seat 38 relative to the support ring 37.

Specifically, the stopper protrusion 3711 has a plurality of stopper protrusions arranged at intervals in the circumferential direction. Because the bearing seat 38 passes through the limiting protrusions 3711 in an interference manner, the limiting protrusions 3711 are distributed at intervals, which is beneficial to deformation so that the bearing seat 38 passes through smoothly.

The right end surface of the stopper protrusion 3711 is a slope inclined from the outer diameter to the inner diameter to the left, and the bearing housing 38 is fitted from the right end of the support ring 37 during assembly, and the slope is provided to guide the installation of the bearing housing 38.

With reference to fig. 14, a stop protrusion 3712 is disposed at one end of the support ring 37 near the motor 31, and the stop protrusion 3712 abuts against the left end of the bearing seat 38, so that the bearing seat 38 can be further limited to be separated from the support ring 37. Specifically, the stop protrusion 3712 has a plurality of stop protrusions arranged at intervals in the circumferential direction.

Referring to fig. 13 and 14, the support ring 37 includes a ring body 371 and an extension 372. The ring body 371 is generally annular and the bearing housing 38 is mounted within the ring body 371. The extension 372 is formed by extending the peripheral portion of the ring body 371 outward.

Referring to fig. 11, the extension 372 is inserted into the first fixing groove 3341. The extension 372 and the first fixing groove 3341 have a substantially square shape, and the support ring 37 can be laterally positioned on the first support plate 334 by the engagement of the extension 372 and the first fixing groove 3341. The vertical positioning of the support ring 37 relies on the connection of the second support plate 335 to the first support plate 334.

In some embodiments, the extension 372 includes a locating edge 373 and a securing edge 374. The positioning edge 373 and the fixing edge 374 are located on both sides of the ring body 371 in the axial direction, respectively, with a space between the positioning edge 373 and the fixing edge 374.

The fixing edge 374 is provided with a fastening portion 3741, a through groove 3344 is formed in a side wall of the first fixing groove 3341, and the fastening portion 3741 is fastened in the through groove 3344.

Specifically, the positioning edge 373 is located on the left side, the fixing edge 374 is located on the right side, and the fastening portion 3741 is provided on the right side surface of the fixing edge 374; the penetrating groove 3344 is provided on the right sidewall where the first fixing groove 3341 is formed.

Since the fixing edge 374 and the positioning edge 373 are spaced, the fixing edge 374 may be deformed during the process of fastening, and pressing the fastening portion 3741 from the outer side to the left side of the through slot 3344 may disengage the fastening portion 3741 from the through slot 3344, so as to detach the support ring 37 in the first fixing slot 3341.

In some embodiments, a partition plate 3345 is further disposed in the first fixing slot 3341, the partition plate 3345 divides the first fixing slot 3341 into a first sub-fixing slot 3346 and a second sub-fixing slot 3347, the first sub-fixing slot 3346 is located on the left side, and the second sub-fixing slot 3347 is located on the right side.

The positioning edge 373 is inserted into the first sub-fixing groove 3346, and the fixing edge 374 is inserted into the second sub-fixing groove 3347; a space is provided between the left side of the fixed edge 374 and the partition plate 3345, so that a deformation space is reserved for the fixed edge 374 when the fixed edge is engaged.

The partition plate 3345 abuts against the ring body 371, so that vertical limit is formed on the ring body 371, and the position accuracy of the rotating shaft 35 is prevented from being influenced due to deformation of the ring body 371 in long-term use.

The left and right sides of division plate 3345 are equipped with a plurality of strengthening ribs 3348, and the structural strength of division plate 3345 can be strengthened to strengthening rib 3348, guarantees division plate 3345 to bearing 36 and pivot 35 end support intensity.

According to the embodiment of the present application, a notch 3731 is provided on the right side of the positioning edge 373, that is, on the side near the partition plate 3345, to avoid the reinforcing rib 3348.

The positioning edge 373 is provided with a notch 3732 on a side perpendicular to the partition plate 3345, specifically, the notch 3732 may be in an open-ended U shape, when the positioning edge 373 is inserted into the first sub-fixing slot 3346, the positioning edge 373 is extruded to generate folding deformation at the notch 3732, so that the positioning edge 373 is ensured not to be easily separated from the first sub-fixing slot 334, and the connection firmness of the support ring 37 on the first support plate 334 is ensured.

In some embodiments, the extension 372 further includes a limit edge 375, the limit edge 375 being attached to the ring body 371 at one end of the locating edge 373 and the securing edge 374.

The limiting edge 375 extends transversely and abuts against one end of the first fixing groove 3341, which is close to the second fixing groove 3351, so as to realize vertical positioning of the supporting ring 37 in the first fixing groove 3341.

The outer circumferential surface of the ring body 371 has a stepped shape in the axial direction, specifically, a stepped shape having a small outer diameter on the left side and a large outer diameter on the right side. The inner wall of the second fixing groove 3346 is also stepped to correspond to the outer shape of the ring body 371. The support ring 37 can be further limited in the left-right direction by the stepped outer shape.

In the application, the bearing 36 for supporting the rotating shaft 35 and the bearing seat 38 adopt a spherical matching structure, so that the bearing 36 can rotate for a certain angle relative to the bearing seat 38, and therefore, under the condition that the rotating shaft 35 is not centered, the bearing 36 can automatically adjust the angle under the action of the eccentric force of the misalignment, the centering of the rotating shaft 35 and the bearing 36 is ensured, and the bearing sound generated by the misalignment in starting or running is avoided.

In the application, the outer peripheral surface 361 of the bearing 36 and the inner peripheral surface 3811 of the bearing seat 38 have the same basic dimensions, so that the bearing 36 can be prevented from deviating from the center of the bearing seat 38 under the action of gravity, and the relative positions of the bearing 36 and the bearing seat 38 are ensured.

In the present application, there is an axial spacing between the bearing 36 and the mounting cavity 381 of the bearing housing 38, thereby providing rotational space for the bearing 36 within the mounting cavity 381.

In the present application, by providing the positioning edge 373 and the fixing edge 374 on the support ring 37, the positioning edge 373 is used for realizing the transverse positioning of the support ring 37 in the first fixing groove 3341, and the fixing edge 374 is used for realizing the clamping connection between the support ring 37 and the first support plate 334, so that the position accuracy and the connection reliability of the support ring 37 relative to the first support plate 334 can be ensured.

In the application, the partition plate 3345 is arranged in the first fixing groove 3341, and the partition plate 3345 limits the ring body 371 of the support ring 37, so that the problem of deformation of the support ring 37 in long-term use is avoided, and the application has the advantages of high reliability and long service life.

In the present application, the strength of the partition plate 3345 can be enhanced and the service life and reliability can be improved by providing the plurality of reinforcing ribs 3348 at both sides of the first fixing groove 3341.

In the present application, the notch 3732 with an open end is provided on the positioning edge 373, so that the positioning edge 373 can slightly deform and fit into the first sub-fixing slot 3346, thereby ensuring the connection firmness of the positioning edge 373 in the first sub-fixing slot 3346.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.

The foregoing description, for purposes of explanation, has been presented in conjunction with specific embodiments. The illustrative discussions above are not intended to be exhaustive or to limit the embodiments to the precise forms disclosed above. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles and the practical application, to thereby enable others skilled in the art to best utilize the embodiments and various embodiments with various modifications as are suited to the particular use contemplated.

Claims (10)

1. An air conditioning indoor unit, comprising:

A housing;

at least three fans arranged in the shell;

the motor is connected between two adjacent fans;

The rotating shaft is connected with a motor shaft of the motor to form a driving shaft, and the driving shaft is connected with the fan and used for driving the fan to rotate;

the bearing is connected to one end, far away from the motor, of the rotating shaft;

The bearing pedestal is provided with a mounting cavity for adapting to the bearing, and the matching surface of the mounting cavity and the bearing is a spherical surface.

2. An air conditioning indoor unit according to claim 1, wherein the mounting cavities and the mating surfaces of the bearings are the same basic dimensions.

3. The indoor unit of claim 1, wherein a perforation is provided at one end of the bearing seat near the motor, and the rotating shaft is penetrated through the perforation; the inner diameter of the through hole and the outer diameter of the rotating shaft are radially spaced.

4. The indoor unit of claim 1, wherein the bearing housing has a stop portion at an end thereof adjacent to the motor, the stop portion having an inner diameter smaller than a minimum outer diameter of the bearing for blocking the bearing.

5. An air conditioning indoor unit according to claim 1, wherein the spherical center of the installation cavity coincides with the axial midpoint of the installation cavity.

6. The indoor unit of claim 1, further comprising:

The first supporting plate is fixedly connected in the shell;

the second supporting plate is connected with the first supporting plate;

A support ring connected between the first support plate and the second support plate;

the bearing seat is connected in the supporting ring.

7. The indoor unit of claim 6, further comprising:

The volute is covered outside the fan and comprises a first volute and a second volute which are connected with each other;

The first supporting plate and the first volute are integrally formed; the second supporting plate and the second volute are integrally formed.

8. The indoor unit of claim 6, wherein the first support plate or the second support plate is provided with a first fixing groove;

The support ring includes:

a ring body in which the bearing housing is installed;

A positioning edge portion formed by extending outward from a peripheral portion of the ring body;

The fixed edge is arranged at intervals with the positioning edge, the fixed edge and the positioning edge are inserted into the first fixing groove, and the fixed edge is clamped with the side wall of the first fixing groove.

9. The indoor unit of claim 8, wherein the first fixed slot is divided into a first sub-fixed slot and a second sub-fixed slot by a dividing plate;

The positioning edge part is adapted to the first sub-fixing groove, and the fixing edge part is inserted into the second sub-fixing groove;

the ring body is abutted against the partition plate.

10. An air conditioning indoor unit, comprising:

A housing;

at least three fans arranged in the shell;

the motor is connected between two adjacent fans;

The rotating shaft is connected with a motor shaft of the motor to form a driving shaft, and the driving shaft is connected with the fan and used for driving the fan to rotate;

the bearing is connected to one end, far away from the motor, of the rotating shaft;

The bearing seat is provided with a mounting cavity for adapting to the bearing, and the matching surface of the mounting cavity and the bearing is a spherical surface;

and an axial interval is arranged between the mounting cavity and the bearing along the axial direction of the bearing.