Fan and air conditioner

Abstract

The present invention provides a fan and an air conditioner, wherein the fan comprises a volute, a fan blade, a first bracket, a second bracket, a motor, a first vibration reduction part, a second vibration reduction part and a third vibration reduction part, wherein the fan blade is arranged in an air induction cavity of the volute, the first bracket and the second bracket are respectively located on both sides of the air induction cavity, the motor comprises a main body and a drive shaft, the main body is connected to the first bracket through the first vibration reduction part, the middle part of the drive shaft is connected to the fan blade drive through the second vibration reduction part, and the end of the drive shaft away from the main body is connected to the second bracket through the third vibration reduction part. With this scheme, the first vibration reduction part and the second vibration reduction part can reduce the vibration of the fan blade and the motor being transmitted to the volute and other structures, the third vibration reduction part can support the drive shaft to prevent the drive shaft from being suspended, thereby further reducing the vibration of the drive shaft and the fan.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular to a fan and an air conditioner. Background Art

[0002] In order to meet the industry standard air output, cabinet air conditioners usually use fans with 2 or 3 small-diameter centrifugal blades. In order to facilitate assembly and reduce costs, some air conditioners use a centrifugal fan to drive the air supply. The fan diameter and thickness are increased, and it is easy to rotate and vibrate during the strong rotation of the air conditioner. Rigid parts are used between the components in the fan, which easily transmits the vibration to the whole machine, causing vibration and high noise problems. Summary of the invention

[0003] The invention provides a fan and an air conditioner to reduce the vibration of the existing fan.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, the present invention provides a fan, including a volute, a first bracket, a second bracket, a fan blade, a motor, a first vibration damping part, a second vibration damping part and a third vibration damping part, wherein the fan blade is arranged in an air induction cavity of the volute, the first bracket and the second bracket are respectively located on both sides of the air induction cavity, the motor includes a main body and a drive shaft, the main body is connected to the first bracket through the first vibration damping part, the middle part of the drive shaft is driven and connected to the fan blade through the second vibration damping part, and the end of the drive shaft away from the main body is connected to the second bracket through the third vibration damping part.

[0005] Furthermore, the second vibration-damping part includes: an outer sleeve, which is arranged inside the fan blade; an inner sleeve, which is arranged inside the outer sleeve, and the drive shaft passes through the inner sleeve; and an elastic sleeve, which is arranged between the outer sleeve and the inner sleeve.

[0006] Furthermore, the inner sleeve has a rotation-stop groove, and the second vibration damping part also includes: a rotation-stop structure connected to the drive shaft, and the rotation-stop structure is arranged in the rotation-stop groove to limit the circumferential relative position of the drive shaft and the inner sleeve.

[0007] Furthermore, a groove is arranged on the outer peripheral surface of the outer casing, and a part of the structure of the fan blade is injection molded in the groove.

[0008] Furthermore, the second vibration damping part further includes: a limiting member, the limiting member is clamped in the groove of the driving shaft, and the limiting member abuts against the end surface of the inner sleeve.

[0009] Furthermore, the first vibration-damping part includes a plurality of elastic members detachably connected to the first bracket, and the plurality of elastic members are respectively connected to different positions of the main body.

[0010] Furthermore, the main body has a plurality of slots, the plurality of elastic members are snap-connected with the plurality of slots in a one-to-one correspondence, and each of the elastic members is fixed to the first bracket by a fastener.

[0011] Furthermore, the third vibration-damping part includes an elastic seat and a bearing arranged in the elastic seat, the elastic seat is arranged on the second bracket, and the driving shaft passes through the bearing.

[0012] Furthermore, the first bracket and the second bracket are both connected to the volute, and the fan further includes: a first elastic pad, which is arranged between the first bracket and the volute; and a second elastic pad, which is arranged between the second bracket and the volute.

[0013] According to another aspect of the present invention, an air conditioner is provided, comprising the above-mentioned fan.

[0014] By applying the technical solution of the present invention, a fan is provided, which includes a volute, a fan blade, a first bracket, a second bracket, a motor, a first vibration reduction part, a second vibration reduction part and a third vibration reduction part, wherein the fan blade is arranged in the air induction cavity of the volute, the first bracket and the second bracket are respectively located on both sides of the air induction cavity, and the motor includes a main body and a drive shaft, the main body is connected to the first bracket through the first vibration reduction part, the middle part of the drive shaft is connected to the fan blade drive through the second vibration reduction part, and the end of the drive shaft away from the main body is connected to the second bracket through the third vibration reduction part. By adopting this solution, the first vibration reduction part and the second vibration reduction part can reduce the vibration of the fan blade and the motor transmitted to the volute and other structures, and the third vibration reduction part can support the drive shaft to prevent the drive shaft from being suspended in the air, thereby reducing the vibration of the drive shaft and the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0016] Figure 1 An exploded view of a wind turbine provided by an embodiment of the present invention is shown;

[0017] Figure 2 Shows Figure 1 A cross-sectional view of the fan in FIG.

[0018] Figure 3 Shows Figure 2 An enlarged view of the fan at the third vibration reduction part;

[0019] Figure 4 Shows Figure 2An enlarged view of the fan at the first vibration reduction portion;

[0020] Figure 5 Shows Figure 1 Assembly drawing of the fan blades and motor;

[0021] Figure 6 Shows Figure 5 An enlarged view of the second vibration damping portion;

[0022] Figure 7 Shows Figure 1 Assembly drawing of the fan in .

[0023] The above drawings include the following reference numerals:

[0024] 11. volute; 12. first bracket; 13. second bracket; 21. fan blade; 22. rotating volute tongue; 30. motor; 31. main body; 32. drive shaft; 40. first vibration damping part; 50. second vibration damping part; 51. outer sleeve; 52. inner sleeve; 53. elastic sleeve; 54. anti-rotation structure; 55. limiter; 60. third vibration damping part; 61. elastic seat; 62. bearing; 71. first elastic pad; 72. second elastic pad. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] like Figures 1 to 7 As shown, an embodiment of the present invention provides a fan, characterized in that it includes a volute 11, a first bracket 12, a second bracket 13, a fan blade 21, a motor 30, a first vibration reduction part 40, a second vibration reduction part 50 and a third vibration reduction part 60, wherein the fan blade 21 is arranged in the air induction cavity of the volute 11, the first bracket 12 and the second bracket 13 are respectively located on both sides of the air induction cavity, the motor 30 includes a main body 31 and a drive shaft 32, the main body 31 is connected to the first bracket 12 through the first vibration reduction part 40, the middle part of the drive shaft 32 is driven and connected to the fan blade 21 through the second vibration reduction part 50, and the end of the drive shaft 32 away from the main body 31 is connected to the second bracket 13 through the third vibration reduction part 60. Specifically, the first bracket 12 and the second bracket 13 are respectively located at two air inlets of the volute 11. The first vibration reduction part 40, the second vibration reduction part 50 and the third vibration reduction part 60 all include elastic structures to play a buffering and vibration reduction role.

[0027] By adopting this solution, the first vibration damping part 40 and the second vibration damping part 50 can reduce the vibration of the fan blade 21 and the motor 30 from being transmitted to the volute 11 and other structures. The third vibration damping part 60 can support the drive shaft 32 to prevent the drive shaft 32 from being suspended in the air, thereby further reducing the vibration of the drive shaft 32 and the fan and reducing noise.

[0028] Moreover, the two ends of the motor 30 of this solution are supported by the third vibration reduction part 60 and the first vibration reduction part 40 respectively, and the force is balanced during the rotation of the fan blade, which reduces the swing of the motor 30 and can effectively solve the problem of noise caused by eccentricity during the rotation of the motor 30. This is also an important innovation of this solution, which avoids the problem of unbalanced force caused by single-sided support in the past and affects the life of the motor.

[0029] In this embodiment, the second vibration reduction unit 50 includes: an outer sleeve 51, which is arranged inside the fan blade 21; an inner sleeve 52, which is arranged inside the outer sleeve 51, and the drive shaft 32 passes through the inner sleeve 52; and an elastic sleeve 53, which is arranged between the outer sleeve 51 and the inner sleeve 52. The outer sleeve 51 is connected to the fan blade 21, and the inner sleeve 52 is connected to the drive shaft 32. The elastic sleeve 53 can achieve a buffering and vibration reduction effect, thereby reducing the vibration of the fan blade 21 from being transmitted to the motor 30.

[0030] Optionally, the fan blade 21 is a centrifugal fan blade, which is injection molded, the outer sleeve 51 and the inner sleeve 52 are made of metal, and the elastic sleeve 53 is made of rubber. The second vibration reduction part 50 is connected to the fan blade 21 by injection molding.

[0031] In this embodiment, the inner sleeve 52 has a rotation-stop groove, and the second vibration damping part 50 further includes: a rotation-stop structure 54, which is connected to the drive shaft 32, and the rotation-stop structure 54 is arranged in the rotation-stop groove to limit the circumferential relative position of the drive shaft 32 and the inner sleeve 52. In this way, a reliable connection between the inner sleeve 52 and the drive shaft 32 can be achieved to achieve torque output. Optionally, the radial cross-section of the rotation-stop groove is a polygon, the shape of the rotation-stop structure 54 matches the rotation-stop groove, and the rotation-stop structure 54 is fixedly connected to the drive shaft 32.

[0032] In this embodiment, a groove is provided on the outer peripheral surface of the outer casing 51, and a part of the structure of the fan blade 21 is injection molded in the groove. In this way, the outer casing 51 and the fan blade 21 can be reliably connected to prevent the fan blade 21 from being separated from the outer casing 51.

[0033] In this embodiment, the second vibration damping part 50 further includes a stopper 55, which is clamped in the groove of the drive shaft 32 and abuts against the end surface of the inner sleeve 52. The stopper 55 can realize axial limitation of the drive shaft 32 and the second vibration damping part 50.

[0034] Specifically, the first vibration reduction unit 40 includes a plurality of elastic members detachably connected to the first bracket 12, and the plurality of elastic members are respectively connected to different positions of the main body 31. In this way, the main body 31 and the first bracket 12 are prevented from being rigidly connected, and the vibration reduction effect is achieved through the elastic members.

[0035] Further, the main body 31 has a plurality of slots, and the plurality of elastic members and the plurality of slots are snap-fitted one by one, and each elastic member is fixed to the first bracket 12 by a fastener. The snap-fitting method is adopted, and the assembly is convenient and the connection is reliable. Optionally, the main body 31 includes a body and a plurality of lugs arranged at intervals in the circumference of the body, each lug has a slot, and the elastic member is snapped into the slot.

[0036] In this embodiment, the third vibration reduction unit 60 includes an elastic seat 61 and a bearing 62 disposed in the elastic seat 61. The elastic seat 61 is disposed on the second bracket 13, and the drive shaft 32 is passed through the bearing 62. The bearing 62 supports the end of the drive shaft 32, thereby preventing the end of the drive shaft 32 from being suspended in the air and reducing vibration. Moreover, by arranging the bearing 62 in the elastic seat 61, the elastic seat 61 can play a vibration reduction role, thereby reducing vibration transmission.

[0037] In this embodiment, the first bracket 12 and the second bracket 13 are both connected to the volute 11, and the fan further includes: a first elastic pad 71, which is arranged between the first bracket 12 and the volute 11; and a second elastic pad 72, which is arranged between the second bracket 13 and the volute 11. By providing the first elastic pad 71 and the second elastic pad 72, the vibration of the first bracket 12 and the second bracket 13 can be reduced from being transmitted to the volute 11, thereby further reducing the vibration transmission to other matching structures.

[0038] Another embodiment of the present invention provides an air conditioner, which includes the above-mentioned fan. With this solution, the first vibration reduction part 40 and the second vibration reduction part 50 can reduce the vibration of the fan blade 21 and the motor 30 from being transmitted to the volute 11 and other structures, and the third vibration reduction part 60 can support the drive shaft 32 to prevent the drive shaft 32 from being suspended in the air, thereby further reducing the vibration of the drive shaft 32 and the fan. This solution reduces the vibration and noise of the air conditioner.

[0039] Optionally, the fan further includes a rotating volute 22, the volute has an air inlet, an upper air outlet, and a lower air outlet all connected to the air inlet cavity, the rotating volute 22 is rotatably arranged in the air inlet cavity, the rotating volute 22 has a first position for blocking the lower air outlet and avoiding the upper air outlet, and the rotating volute 22 also has a second position for blocking the upper air outlet and avoiding the lower air outlet. In this way, the upper air outlet or the lower air outlet of the air conditioner is realized by switching the position of the rotating volute 22.

[0040] Optionally, the inner wall of the air induction chamber has a guide groove, and the fan further includes a guide structure, which is arranged on the rotating volute tongue 22, and the guide structure is located in the guide groove to move along the guide groove. In this way, the rotating volute tongue 22 can be guided by the cooperation of the guide structure and the guide groove, so that the rotating volute tongue 22 moves smoothly, reduces shaking, and improves reliability.

[0041] Optionally, the guide structure includes: a first roller, rotatably disposed on the rotating volute 22, the axis of the first roller is parallel to the rotation center line of the rotating volute 22, and the first roller abuts against the side wall of the guide groove; a second roller, rotatably disposed on the rotating volute 22, the axis of the second roller is perpendicular to the rotation center line of the rotating volute 22, and the second roller abuts against the bottom wall of the guide groove. By using the first roller and the second roller with different axes, the rotating volute 22 is limited and guided in different directions, so that the rotating volute 22 moves smoothly. The first roller and the second roller are used to avoid direct contact between the rotating volute 22 and the inner wall of the air induction chamber, reduce friction resistance, and move smoothly.

[0042] Optionally, the rotating volute tongue 22 includes: an arc-shaped plate, the arc-shaped plate is used to block the upper air outlet or the lower air outlet, and there is a gap between the arc-shaped plate and the inner wall of the air induction chamber; an arc-shaped baffle, which is arranged on the arc-shaped plate, and a part of the arc-shaped baffle is located in the guide groove. The gap is arranged between the arc-shaped plate and the inner wall of the air induction chamber, which can facilitate the rotation of the rotating volute tongue 22 and avoid jamming. The arc-shaped baffle extending into the guide groove can block the gap to avoid air leakage in the gap, thereby improving the sealing and air volume of the fan. Optionally, there is a gap between the arc-shaped baffle and the inner wall of the air induction chamber, so as to avoid the contact between the arc-shaped baffle and the inner wall of the air induction chamber and generate friction. Moreover, the arc-shaped baffle has an avoidance groove for avoiding the guide structure. By setting the avoidance groove, interference between the guide structure and the arc-shaped baffle can be avoided, which facilitates the arrangement of the guide structure.

[0043] Optionally, the air conditioner further comprises a shell and a heat exchanger, the fan and the heat exchanger are both arranged in the shell, and the shell has an upper air port and a lower air port. An upper air duct and a lower air duct are arranged between the volute and the shell, and the two ends of the upper air duct are respectively connected to the upper air port and the air inlet, and the lower air duct is respectively connected to the lower air port and the air inlet. The air conditioner further comprises: an upper wind shielding mechanism, which is arranged in the cavity of the shell, and at least a part of the upper wind shielding mechanism is movably arranged to open or close the upper air duct; a lower wind shielding mechanism, which is arranged in the cavity of the shell, and at least a part of the lower wind shielding mechanism is movably arranged to open or close the lower air duct.

[0044] With this solution, when the air conditioner is discharging air from the upper air outlet (i.e., the fan is in the state of discharging air from the upper air outlet, and the wind enters the upper air outlet and blows out), the upper air duct is closed by the upper wind shielding mechanism, so that the wind only enters from the lower air duct, avoiding the wind entering from the upper air duct and affecting the air outlet; when the air conditioner is discharging air from the lower air outlet (i.e., the fan is in the state of discharging air from the lower air outlet, and the wind enters the lower air outlet and blows out), the lower air duct is closed by the lower wind shielding mechanism, so that the wind only enters from the upper air duct, avoiding the wind entering from the lower air duct and affecting the air outlet. Therefore, this solution can increase the air output of the air conditioner and improve the heat exchange efficiency.

[0045] Optionally, the upper wind shielding mechanism includes: an upper baffle, which is rotatably arranged in the upper air duct to open or close the upper air duct; and an upper driving unit, which is drivingly connected to the upper baffle to drive the upper baffle to rotate. In this way, the upper baffle is rotated by the upper driving unit, thereby opening or closing the upper air duct by the upper baffle. This solution has a simple structure and is easy to control.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fan, characterized in that: The motor (30) comprises a volute (11), a first bracket (12), a second bracket (13), a fan blade (21), a motor (30), a first vibration reduction part (40), a second vibration reduction part (50), and a third vibration reduction part (60), wherein the fan blade (21) is arranged in an air induction cavity of the volute (11), the first bracket (12) and the second bracket (13) are respectively located on both sides of the air induction cavity, the motor (30) comprises a main body (31) and a drive shaft (32), the main body (31) is connected to the first bracket (12) via the first vibration reduction part (40), the middle part of the drive shaft (32) is drivingly connected to the fan blade (21) via the second vibration reduction part (50), and the end of the drive shaft (32) away from the main body (31) is connected to the second bracket (13) via the third vibration reduction part (60); The second vibration-damping part (50) comprises: an outer sleeve (51) disposed inside the fan blade (21); an inner sleeve (52) disposed inside the outer sleeve (51), the drive shaft (32) passing through the inner sleeve (52); and an elastic sleeve (53) disposed between the outer sleeve (51) and the inner sleeve (52); The inner sleeve (52) has a rotation-stop groove, and the second vibration damping part (50) further comprises: a rotation-stop structure (54) connected to the drive shaft (32), the rotation-stop structure (54) being arranged in the rotation-stop groove to limit the circumferential relative position of the drive shaft (32) and the inner sleeve (52); A groove is provided on the outer peripheral surface of the outer casing (51), and a part of the structure of the fan blade (21) is injection-molded in the groove; The fan further comprises a rotating volute tongue (22), the volute (11) having an air inlet, an upper air outlet, and a lower air outlet all of which are connected to the air inlet cavity, the rotating volute tongue (22) being rotatably arranged in the air inlet cavity, the rotating volute tongue (22) having a first position for blocking the lower air outlet and avoiding the upper air outlet, and the rotating volute tongue (22) also having a second position for blocking the upper air outlet and avoiding the lower air outlet; The inner wall of the air induction chamber has a guide groove, and the fan also includes a guide structure, which includes: a first roller rotatably arranged on the rotating volute tongue (22), the axis of the first roller is parallel to the rotation center line of the rotating volute tongue (22), and the first roller abuts against the side wall of the guide groove; a second roller rotatably arranged on the rotating volute tongue (22), the axis of the second roller is perpendicular to the rotation center line of the rotating volute tongue (22), and the second roller abuts against the bottom wall of the guide groove.

2. The fan according to claim 1, characterized in that: The second vibration damping part (50) further comprises: A limiting member (55), the limiting member (55) being clamped in a groove of the driving shaft (32), and the limiting member (55) and the end surface of the inner sleeve (52) being in abutment with each other.

3. The fan according to claim 1, characterized in that: The first vibration reduction part (40) comprises a plurality of elastic members detachably connected to the first bracket (12), and the plurality of elastic members are respectively connected to different positions of the main body (31).

4. The fan according to claim 3, characterized in that: The main body (31) has a plurality of slots, the plurality of elastic members and the plurality of slots are snap-connected in a one-to-one correspondence, and each of the elastic members is fixed to the first bracket (12) via a fastener.

5. The fan according to claim 1, characterized in that: The third vibration-damping part (60) comprises an elastic seat (61) and a bearing (62) arranged in the elastic seat (61); the elastic seat (61) is arranged on the second bracket (13); and the driving shaft (32) is inserted into the bearing (62).

6. The fan according to any one of claims 1 to 5, characterized in that: The first bracket (12) and the second bracket (13) are both connected to the volute (11), and the fan further comprises: a first elastic pad (71), the first elastic pad (71) being arranged between the first bracket (12) and the volute (11); A second elastic pad (72), wherein the second elastic pad (72) is arranged between the second bracket (13) and the volute (11).

7. An air conditioner, characterized in that: The air conditioner comprises the fan according to any one of claims 1 to 6.

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