CN220134239U - Fan device and air conditioner - Google Patents

Abstract

The utility model provides a fan device and an air conditioner, wherein the fan device comprises a wind wheel; a motor including a drive shaft; the driving shaft is connected with the wind wheel and is configured to drive the wind wheel to rotate; a volute having a first side and a second side, and an air duct extending from the first side to the second side; the motor is fixed on the first side, and the wind wheel is arranged in the air duct; the balance assembly comprises a balance frame, a balance block and a balance rod; the balance frame is fixed on the second side, and the balance block is connected with the balance frame; the balance rod is rotationally connected with the balance block; the balance rod is fixedly connected with the driving shaft. The utility model aims to solve the technical problem of eccentric swing of a driving shaft in the prior art.

Description

Fan device and air conditioner

Technical Field

The utility model relates to the technical field of air conditioning equipment, in particular to a fan device and an air conditioner.

Background

A duct type air conditioner is a common ceiling mounted air conditioner. The air conditioner generally includes a fan assembly disposed within a volute. The fan assembly generally includes a motor, a rotor, and a volute. The wind wheel is arranged in the volute, and the motor is arranged on the volute and used for driving the wind wheel to rotate.

However, the weight of the wind wheel in the prior art is fully borne by the drive shaft of the motor, causing the drive shaft to oscillate eccentrically.

Disclosure of Invention

The utility model mainly aims to provide a fan device and an air conditioner, and aims to solve the technical problem of eccentric swing of a driving shaft in the prior art.

The embodiment of the utility model provides a fan device which is used for balancing a driving shaft of a motor; comprising the following steps:

a wind wheel;

a motor including a drive shaft; the driving shaft is connected with the wind wheel and is used for driving the wind wheel to rotate;

a volute having a first side and a second side, and an air duct extending from the first side to the second side; the motor is fixed on the first side, and the wind wheel is arranged in the air duct; and

the balance assembly comprises a balance frame, a balance block and a balance rod; the balance frame is fixed on the second side, and the balance block is connected with the balance frame; the balance rod is rotationally connected with the balance block; the balance rod is fixedly connected with the driving shaft.

Optionally, the balance bar is provided with an assembly hole, and an orifice of the assembly hole is arranged on the end face of the balance bar, which is far away from the balance block;

the drive shaft is at least partially inserted into the assembly hole and circumferentially fixed with the assembly hole.

Optionally, the balance bar is connected with the driving shaft through a key.

Optionally, the balance bar is provided with a latch, and the latch is convexly arranged on the circumferential surface of the balance bar;

the balance weight comprises a rolling bearing, and a clamping groove is formed in the inner wall surface of the inner ring of the rolling bearing;

the balance rod is embedded into the inner ring of the rolling bearing, and the clamping teeth are matched with the clamping grooves, so that the balance rod and the inner ring of the rolling bearing are kept circumferentially fixed.

Optionally, the plurality of latches are arranged at intervals along the circumference of the balance bar;

the plurality of clamping grooves are arranged at intervals along the circumferential direction of the inner ring of the rolling bearing;

the clamping teeth are matched with the clamping grooves in a one-to-one correspondence mode.

Optionally, at least one axial end face of the inner ring of the rolling bearing is provided with a notch of the clamping groove.

Optionally, the balancing stand has a plurality ofly, and a plurality of balancing stands are in the circumference interval setting of balancing piece.

Optionally, the plurality of balancing frames are uniformly arranged in the circumferential direction of the balancing weight, and the centers of shapes defined by the plurality of balancing frames are located on the axis of the balancing rod.

Optionally, the balancing stand is provided with a plurality of fixing holes for fixing the balancing stand on the second side; the plurality of fixing holes are arranged at intervals along the radial direction of the wind wheel; and/or the apertures of the plurality of fixing holes are different.

The utility model also provides an air conditioner which comprises the fan device.

In the technical scheme of the embodiment of the utility model, the motor is fixed on the first side of two opposite sides of the volute, and the balance frame on the balance component is fixed on the second side. The balance weight is fixed on the balance frame and is rotationally connected with the balance rod, and the balance rod is fixedly connected with the driving shaft of the motor. According to the embodiment of the utility model, the other end of the driving shaft is fixed on the balance rod, so that one end of the driving shaft, which is far away from the motor, is in a supported state instead of a suspended state, and the technical defect of eccentric swing of the driving shaft can be overcome.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of a fan device according to an embodiment of the present utility model;

fig. 2 is a schematic perspective view of a fan device according to an embodiment of the present utility model;

fig. 3 is a schematic perspective view of a balance bar in a fan device according to an embodiment of the present utility model;

FIG. 4 is a schematic perspective view of a balancing component in a fan device according to an embodiment of the present utility model;

fig. 5 is a schematic perspective view of a counterweight and a balancing frame in a fan device according to an embodiment of the utility model.

List of reference numerals

100	Blower fan device	1211	Assembly hole
				110	Volute casing	1212	Latch tooth
111	First side	1221	Rolling bearing
				112	Second side	12211	Clamping groove
113	Air duct	1231	Fixing hole
				120	Balance assembly	210	Driving shaft
121	Balance bar	220	Motor with a motor housing
				122	Balance weight	230	Support frame
123	Balance frame	240	Wind wheel

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

Air duct type air conditioners are a common type of indoor unit. A fan assembly is arranged in the air conditioner. The fan assembly comprises a volute, a wind wheel and a motor. A wind wheel is arranged in the volute, and a motor is used for driving the wind wheel to rotate. The motor is arranged at one side of the volute, and a wind wheel is sleeved on a driving shaft of the motor. One end of the driving shaft is connected to the motor, the other end is in a suspended state, and the weight of the wind wheel is completely added on the driving shaft of the motor. When the motor is operated, the driving shaft can eccentrically swing. In particular, when the air conditioner is in a pressurized state in operation, the rotation speed of the motor is changed due to the change of static pressure in the volute; when the static pressure is gradually increased, the running load of the motor is increased, the rotating speed of the rotating shaft of the motor is increased, the eccentric amplitude is increased, and abnormal sound can be generated by the motor at the moment, so that the air conditioner generates noise, and the user experience is affected.

Therefore, the embodiment of the utility model provides a fan device, which aims to solve the technical problem of eccentric swing of a driving shaft and further improve the noise of an air conditioner.

Referring to fig. 1 and 2, an embodiment of the present utility model provides a fan apparatus 100 capable of balancing a driving shaft 210 of a motor 220. The fan apparatus 100 includes:

a wind wheel 240;

a motor 220, the motor 220 comprising a drive shaft 210; the driving shaft 210 is connected with the wind wheel 240 and configured to drive the wind wheel 240 to rotate;

a volute 110, the volute 110 having a first side 111 and a second side 112, and an air duct 113 extending from the first side 111 to the second side 112; the motor 220 is fixed on the first side 111, and the wind wheel 240 is disposed in the air duct 113; and

a balance assembly 120, the balance assembly 120 including a balance frame 123, a balance weight 122, and a balance bar 121; the balancing stand 123 is fixed on the second side 112, and the balancing weight 122 is connected with the balancing stand 123; the balance bar 121 is rotatably connected with the balance block 122; the balance bar 121 is fixedly connected with the driving shaft 210.

In the technical solution of the embodiment of the present utility model, of two opposite sides of the scroll casing 110, the first side 111 is used for fixing the motor 220, and the second side 112 is used for fixing the balancing stand 123 on the balancing assembly 120. The balance weight 122 is fixed on the balance frame 123, the balance weight 122 is rotatably connected with the balance rod 121, and the balance rod 121 is fixedly connected with the driving shaft 210 of the motor 220. In the embodiment of the utility model, the other end of the driving shaft 210 is fixed on the balance rod 121, so that the end of the driving shaft 210 far away from the motor 220 is in a supported state rather than a suspended state, and the technical defect of eccentric swing of the driving shaft 210 can be overcome.

When the motor 220 is operated, the driving shaft 210 drives the wind wheel 240 to rotate, and at this time, since the driving shaft 210 is fixedly connected with the balance rod 121, the balance rod 121 is rotatably connected to the balance weight 122, and the balance rod 121 rotates along with the rotation. Particularly, when the back pressure increases during the operation of the air conditioner, the operation load of the motor 220 increases and the rotation speed of the rotating shaft of the motor 220 increases when the static pressure in the scroll case 110 increases, however, the eccentric degree of the driving shaft 210 is suppressed due to the support of the balancing assembly 120 to the driving shaft 210, and the noise generated by the air conditioner is effectively improved.

It should be noted that, in the embodiment, referring to fig. 1 and 2, the first side 111 and the second side 112 are generally opposite sides of the volute 110 in the axial direction of the drive shaft 210. Motor 220 is mounted on first side 111; specifically, the motor 220 is secured to the first side 111 of the volute 110 by legs and bolts. The wind wheel 240 is assembled with the driving shaft 210 by bolting.

Referring to fig. 3, as an alternative implementation of the foregoing embodiment, as shown in fig. 3, the balance bar 121 is provided with a fitting hole 1211, and an orifice of the fitting hole 1211 is disposed on an end surface of the balance bar 121 away from the balance block 122. As shown in fig. 1 and 3, a portion of the driving shaft 210 away from the motor 220 is inserted into the fitting hole 1211 and is held circumferentially fixed with the fitting hole 1211 so that the balance bar 121 can rotate together with the driving shaft 210.

In an embodiment, the fitting hole 1211 is an interference fit with the drive shaft 210. In an embodiment, the fitting hole 1211 may employ a D-shaped hole, a square hole, or the like.

In other embodiments, the balance bar 121 is keyed to the drive shaft 210. The balance bar 121 and the driving shaft 210 are circumferentially fixed by a key connection. For example, the end of the balance bar 121 remote from the balance weight 122 is configured as a hollow disk-like structure, the inner wall of which is configured with a key slot, and the drive shaft 210 is configured with another key slot. The driving shaft 210 is inserted into the hollow disc, and the key is inserted into the key groove of the balance bar 121 and the other key groove of the driving shaft 210 to fix both.

As an alternative to the above embodiment, as shown in fig. 3, the balance bar 121 is provided with a latch 1212, and the latch 1212 is protruded on the circumferential surface of the balance bar 121. In an embodiment, the latches 1212 are integrally provided on the and circumferential surfaces of the balance bar 121. As shown in fig. 4 and 5, the balance weight 122 includes a rolling bearing 1221, and an inner wall surface of an inner ring of the rolling bearing 1221 is provided with a locking groove 12211. In an embodiment, the weight 122 includes a housing and a rolling bearing 1221. The housing has an air duct 113, and a rolling bearing 1221 is provided in the air duct 113. The outer ring of the rolling bearing 1221 is fixed to the inner wall of the housing. The balance bar 121 is embedded in the inner ring of the rolling bearing 1221, and the latch 1212 is engaged with the latch groove 12211, so that the balance bar 121 and the inner ring of the rolling bearing 1221 remain circumferentially fixed.

The rolling bearing 1221 has balls between an inner ring and an outer ring. Since the balance bar 121 is fixed to the inner circumference, the rolling support allows the balance bar 121 to rotate and supports the balance bar 121 when the motor 220 is driven, thereby suppressing eccentric swing of the driving shaft 210.

As an alternative to the above embodiment, as shown in fig. 3, the plurality of latches 1212 are provided, and the plurality of latches 1212 are spaced apart along the circumference of the balance bar 121. As shown in fig. 5, the plurality of the locking grooves 12211 are provided, and the plurality of locking grooves 12211 are arranged at intervals along the circumferential direction of the inner ring of the rolling bearing 1221. The latches 1212 are in one-to-one correspondence with the slots 12211. The number of the latches 1212 is three, and the three latches 1212 are distributed at intervals along the circumferential direction of the balance bar 121; the number of the clamping grooves 12211 is also three, and the three clamping grooves 12211 are uniformly distributed at intervals along the circumferential direction of the balance bar 121. Each latch 1212 is embedded in a corresponding slot 12211, so as to fix the balance bar 121 and the inner ring of the rolling bearing 1221 circumferentially.

In some embodiments, the plurality of latches 1212 are each spaced apart along the circumference of the balance bar 121. The number of the latch 1212 and the latch groove 12211 is not particularly limited, and the latch 1212 is engaged with the latch groove 12211 one by one.

As an alternative to the above embodiment, as shown in fig. 5, at least one axial end surface of the inner ring of the rolling bearing 1221 is provided with a notch of the catch groove 12211. The notch facilitates axial assembly of the latch 1212 into the slot 12211 while facilitating axial withdrawal of the latch 1212 from the slot 12211 during assembly and disassembly. Thus, in some embodiments, one end of the balance bar 121 having the latch 1212 may be provided with a standard structure, while the other end of the balance bar 121 for assembling the driving shaft 210 may be provided with a different structure to match different driving shafts 210, and thus the balance bar 121 may be selected according to different shaft shapes of driving shafts 210 without replacing the balance weight 122.

As an alternative implementation of the above embodiment, as shown in fig. 4 and 5, the balancing stand 123 has a plurality of balancing stands 123, and the plurality of balancing stands 123 are disposed at intervals in the circumferential direction of the balancing weight 122. The plurality of the balancing weights 123 are advantageous in supporting the balancing weights 122, and thus the swing of the driving shaft 210 can be effectively suppressed. In the embodiment, the number of the balancing frames 123 is three, and the circumferential spacing of the balancing weights 122 of the three balancing frames 123 is set. The number of the balancing stand 123 is not specifically shown. In an embodiment, the balance frame 123 may be welded to the balance weight 122, or may be screwed to the balance frame 123.

As an alternative implementation of the foregoing embodiment, the plurality of balancing weights 123 are uniformly arranged in the circumferential direction of the balancing weights 122, and a centroid defined by the plurality of balancing weights 123 is located on the axis of the balancing bar 121. The balance frame 123 has the same structure. The centroid may be generally understood as the intersection of the extension lines of the plurality of balancing weights 123 and may also be understood as the center of the geometric shape defined by the plurality of balancing weights 123. By this arrangement, the external force applied to the driving shaft 210 can be balanced, and vibration caused by eccentric external load can be avoided.

As an alternative implementation of the above embodiment, as shown in fig. 5, the balancing stand 123 is provided with a plurality of fixing holes 1231, and the plurality of fixing holes 1231 are used to fix the balancing stand 123 on the second side. The scroll case 110 is provided with another portion of the fixing hole 1231 matched thereto. The fixing hole 1231 of the balance frame 123 is connected with the other fixing hole of the volute case 110, which is matched with the fixing hole, through the connecting piece, so that the balance frame 123 is fixed. In an embodiment, the securing holes 1231 are typically threaded holes.

In order to reduce the manufacturing cost of the balance bracket 230, in an embodiment, the plurality of fixing holes 1231 are spaced apart along the radial direction of the wind wheel. The size of the scroll case 110 is related to the air volume of the air conditioner. The fixing holes 1231 are provided to be spaced apart in the radial direction of the wind wheel so as to be able to match the volutes 110 of different sizes. The apertures of the plurality of fixing holes 1231 are different in order to match the different sizes of the volutes 110. The balancing stand 123 can be adapted to the wind wheel 240 volutes 110 with different specifications, so that multiple selectivities of matching and combination are achieved, and the universality of the shaft balancing stand 123 of the motor 220 is greatly improved.

The embodiment of the utility model provides an air conditioner, in particular to an air duct type air conditioner. The air conditioner comprises a fan device as described above. The specific structure of the fan device refers to the above embodiments, and since the fan device adopts all the technical solutions of all the embodiments, at least the fan device has all the beneficial effects brought by the technical solutions of the embodiments, and the details are not repeated here.

The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (10)

1. A fan apparatus, comprising:

a wind wheel;

a motor including a drive shaft; the driving shaft is connected with the wind wheel and is used for driving the wind wheel to rotate;

a volute having a first side and a second side, and an air duct extending from the first side to the second side; the motor is fixed on the first side, and the wind wheel is arranged in the air duct; and

the balance assembly comprises a balance frame, a balance block and a balance rod; the balance frame is fixed on the second side, and the balance block is connected with the balance frame; the balance rod is rotationally connected with the balance block; the balance rod is fixedly connected with the driving shaft.

2. The fan apparatus as claimed in claim 1, wherein the balance bar is provided with an assembly hole, and an orifice of the assembly hole is provided on an end face of the balance bar away from the balance block;

the drive shaft is at least partially inserted into the assembly hole and circumferentially fixed with the assembly hole.

3. The fan apparatus of claim 1, wherein the balance bar is keyed to the drive shaft.

4. The fan apparatus as claimed in claim 1, wherein the balance bar is provided with a latch protruding on a circumferential surface of the balance bar;

the balance weight comprises a rolling bearing, and a clamping groove is formed in the inner wall surface of the inner ring of the rolling bearing;

the balance rod is embedded into the inner ring of the rolling bearing, and the clamping teeth are matched with the clamping grooves, so that the balance rod and the inner ring of the rolling bearing are kept circumferentially fixed.

5. The fan apparatus of claim 4, wherein the plurality of latches are spaced apart along the circumference of the balance bar;

the plurality of clamping grooves are arranged at intervals along the circumferential direction of the inner ring of the rolling bearing;

the clamping teeth are matched with the clamping grooves in a one-to-one correspondence mode.

6. The fan apparatus as claimed in claim 4, wherein a notch of the catching groove is provided on at least one axial end face of the inner ring of the rolling bearing.

7. The fan apparatus as claimed in claim 1, wherein the balancing stand has a plurality of the balancing stands, and the plurality of the balancing stands are arranged at intervals in a circumferential direction of the balancing weight.

8. The fan apparatus of claim 7, wherein the plurality of balancing brackets are uniformly disposed in a circumferential direction of the balancing weight, and a centroid defined by the plurality of balancing brackets is located on an axis of the balancing lever.

9. The fan apparatus as claimed in claim 1, wherein the balance frame is provided with a plurality of fixing holes for fixing the balance frame on the second side;

the plurality of fixing holes are arranged at intervals along the radial direction of the wind wheel; and/or

The apertures of the plurality of fixing holes are different.

10. An air conditioner comprising the fan apparatus as claimed in any one of claims 1 to 9.