CN216111344U - Noise reduction mechanism of axial flow fan - Google Patents

Abstract

The utility model discloses a noise reduction mechanism of an axial flow fan, which comprises a lower bracket, wherein an axial flow shell is arranged in the middle of the upper side of the lower bracket through a rotating shaft, a silencing cover is arranged in the axial flow shell through a first supporting shaft, a first motor is arranged in the silencing cover, one end of the first motor is in transmission connection with an axial flow blade, a stable support is arranged between the lower bracket and the rotating shaft, the lower end of the rotating shaft is in transmission connection with a second motor through a gear set, a first silencing layer is arranged in the silencing cover, a second silencing layer is arranged in the axial flow shell, filter screens are arranged in air inlets and air outlets at two ends of the axial flow shell, the first motor is arranged in the silencing cover, the first silencing layer is arranged in the silencing cover, the second silencing layer is arranged in the axial flow shell, the silencing treatment can be carried out on the motor and the axial flow blade, and the double-layer silencing treatment can be carried out on the outer side of the first motor, greatly improving the efficiency of noise reduction.

Description

Noise reduction mechanism of axial flow fan

Technical Field

The utility model relates to the technical field of fans, in particular to a noise reduction mechanism of an axial flow fan.

Background

The fan is a machine which increases the pressure of gas and discharges the gas by means of input mechanical energy, and is a driven fluid machine. The main structural components of the fan are an impeller, a shell, an air inlet, a bracket, a motor, a belt pulley, a coupling, a silencer, a transmission part (a bearing) and the like. The unpowered ventilator utilizes natural wind force and air heat convection caused by indoor and outdoor temperature difference to drive the turbine to rotate, so that the hot air which is not fresh in the room is discharged by utilizing centrifugal force and negative pressure effect. An axial fan, the air flow enters the impeller of the fan axially, flows approximately on the cylindrical surface in the axial direction. Such fans include axial fans, axial blowers, and axial compressors.

The technical scheme is that the shell comprises check rings arranged on end faces of two sides in the length direction, a plurality of partition bars arranged between the two check rings, and an installation structure formed between the check rings and the partition bars is used for carrying out sound absorption treatment on the sound absorption bars arranged between two adjacent partition bars. However, the silencing effect to the outside of the motor is poor, the horizontal rotation of the axial flow fan is not convenient to adjust and process, and the requirement for air supply processing at different horizontal angles is difficult to meet.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a noise reduction mechanism of an axial flow fan, which aims to solve the problems that in the prior art, the noise reduction effect on the outer side of a motor is poor, the axial flow fan is inconvenient to horizontally rotate and adjust, and the requirement on air supply treatment at different horizontal angles is difficult to meet.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an axial fan's mechanism of making an uproar falls, includes the lower carriage, axial compressor casing is installed through the pivot in the middle part of the lower carriage upside, the amortization cover is installed through first supporting shaft to axial compressor casing inside, amortization cover internally mounted has first motor, first motor one end transmission is connected with axial compressor blade, install firm support between lower carriage and the pivot, the pivot lower extreme is connected with the second motor through the gear train transmission, amortization cover internally mounted has first amortization layer, axial compressor casing internally mounted has the second amortization layer, install the filter screen in the axial compressor casing both ends business turn over wind gap.

Furthermore, the rotating shaft is rotatably connected with the lower support through a bearing, and one end of the rotating shaft is fixedly welded with the axial flow shell.

Furthermore, a limiting groove is formed in the stabilizing support, and the rotating shaft is rotatably clamped in the limiting groove through a limiting disc.

Furthermore, the gear train is including setting up the driven gear in pivot one end the transmission of second motor one end is connected with the driving gear, and driven gear and driving gear meshing connection, second motor fixed mounting is in lower carriage one side.

Furthermore, a second support shaft is arranged between the silencing cover and the first motor, and the second support shafts are arranged on the outer side of the first motor in an annular array mode.

Furthermore, the first silencing layer adopts a silencing cotton layer, and the second silencing layer adopts a silencing strip.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the first motor is arranged in the silencing cover, the first silencing layer is arranged in the silencing cover, the second silencing layer is arranged in the axial flow shell, so that the silencing treatment can be carried out on the motor and the axial flow blades, and the double-layer silencing treatment can be carried out on the outer side of the first motor, so that the silencing efficiency is greatly improved.

2. According to the utility model, the stable support is arranged between the lower support and the rotating shaft, the limiting groove is formed in the stable support, and the rotating shaft is rotatably clamped in the limiting groove through the limiting disc, so that the rotating shaft can be rotatably supported and arranged in the stable support, the connection stability of the rotating shaft and the stable support is conveniently improved, the working stability of the axial flow fan is convenient, and the noise is favorably reduced.

3. The axial flow fan is rotatably connected with the lower support through the bearing through the rotating shaft, and the lower end of the rotating shaft is in transmission connection with the second motor through the gear set, so that the rotating shaft can be driven to rotate and adjust through the second motor and the gear set, the axial flow fan can be horizontally rotated and adjusted, and air supply processing at different horizontal angles is met.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a front view of the overall structure of the present invention;

FIG. 2 is an enlarged view of the structure at A of the present invention;

fig. 3 is a left side view of the sound-deadening cap structure of the present invention.

In the figure: 1. a lower bracket; 2. a rotating shaft; 3. an axial flow housing; 4. a first support shaft; 5. a sound deadening hood; 6. a second support shaft; 7. a first motor; 8. an axial flow blade; 9. a second sound-deadening layer; 10. a driven gear; 11. a driving gear; 12. a second motor; 13. a filter screen; 14. a stable support; 15. a limiting disc; 16. a first sound damping layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, 2 and 3, in an embodiment of the present invention, a noise reduction mechanism for an axial flow fan includes a lower bracket 1, an axial flow housing 3 is installed at the middle of the upper side of the lower bracket 1 through a rotating shaft 2, a noise reduction cover 5 is installed inside the axial flow housing 3 through a first support shaft 4, so as to facilitate noise reduction treatment of the inside of the fan, a first motor 7 is installed inside the noise reduction cover 5, one end of the first motor 7 is connected with an axial flow blade 8 in a transmission manner, a stable support 14 is installed between the lower bracket 1 and the rotating shaft 2, the lower end of the rotating shaft 2 is connected with a second motor 12 through a gear set in a transmission manner, the rotating shaft 2 can be driven to rotate and adjust through the second motor 12 and the gear set, so as to horizontally rotate and adjust the axial flow fan, so as to meet air supply treatment at different horizontal angles, a first noise reduction layer 16 is installed inside the noise reduction cover 5, a second noise reduction layer 9 is installed inside the axial flow housing 3, can carry out noise cancelling treatment to first motor 7 and axial compressor blade 8, can carry out double-deck noise cancelling treatment to the first motor 7 outside moreover, greatly improve the efficiency of amortization, install filter screen 13 in the 3 both ends business turn over wind mouths of axial compressor casing, prevent that debris from getting into inside the fan, improve the security of using.

Preferably, the rotating shaft 2 is rotatably connected with the lower bracket 1 through a bearing, and one end of the rotating shaft 2 is fixedly welded with the axial flow shell 3.

Preferably, the spacing groove has been seted up to firm support 14 is inside, and pivot 2 is established at the spacing inslot through the rotatory card of spacing dish 15 for can install 2 rotatory supports of pivot in firm support 14, be convenient for improve the stability that pivot 2 and firm support 14 are connected, the stability of the axial fan during operation of being convenient for is favorable to noise abatement's production.

Preferably, the gear train is connected with driving gear 11 including the driven gear 10 second motor 12 one end transmission that sets up in 2 one ends of pivot, and driven gear 10 and driving gear 11 meshing are connected, and second motor 12 fixed mounting can handle axial fan horizontal rotation regulation in 1 one side of lower carriage to satisfy different horizontal angle's air supply and handle.

Preferably, a second supporting shaft 6 is installed between the silencing cover 5 and the first motor 7, and the second supporting shaft 6 is arranged in a plurality of annular arrays outside the first motor 7, so that the stability of connection between the silencing cover 5 and the first motor 7 is improved.

Preferably, the first sound-deadening layer 16 is a sound-deadening cotton layer, and the second sound-deadening layer 9 is a sound-deadening strip, so that the sound-deadening performance is excellent.

The working principle and the using process of the utility model are as follows: the first motor 7 is arranged inside the silencing cover 5, the first silencing layer 16 is arranged inside the silencing cover 5, and the second silencing layer 9 is arranged inside the axial flow shell 3, so that the first motor 7 and the axial flow blades 8 can be subjected to silencing treatment, the outer side of the first motor 7 can be subjected to double-layer silencing treatment, and the silencing efficiency is greatly improved; and because pivot 2 passes through the bearing and is connected with the rotation of lower carriage 1, 2 lower extremes of pivot are connected with second motor 12 through the gear train transmission for can drive 2 rotation regulation of pivot through second motor 12 and gear train, thereby can handle axial fan horizontal rotation regulation, thereby satisfy the air supply of different horizontal angle and handle.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. The utility model provides an axial fan's mechanism of making an uproar falls, includes lower carriage (1), its characterized in that: axial compressor casing (3) are installed through pivot (2) in lower carriage (1) upside middle part, amortization cover (5) are installed through first back shaft (4) to axial compressor casing (3) inside, amortization cover (5) internally mounted has first motor (7), first motor (7) one end transmission is connected with axial compressor blade (8), install firm support (14) between lower carriage (1) and pivot (2), pivot (2) lower extreme is connected with second motor (12) through the gear train transmission, amortization cover (5) internally mounted has first amortization layer (16), axial compressor casing (3) internally mounted has second amortization layer (9).

2. The noise reduction mechanism of an axial flow fan according to claim 1, characterized in that: the rotating shaft (2) is rotatably connected with the lower support (1) through a bearing, and one end of the rotating shaft (2) is fixedly welded with the axial flow shell (3).

3. The noise reduction mechanism of an axial flow fan according to claim 1, characterized in that: the fixing support (14) is internally provided with a limiting groove, and the rotating shaft (2) is rotatably clamped in the limiting groove through a limiting disc (15).

4. The noise reduction mechanism of an axial flow fan according to claim 1, characterized in that: the gear train is including setting up driven gear (10) in pivot (2) one end second motor (12) one end transmission is connected with driving gear (11), and driven gear (10) and driving gear (11) meshing are connected, second motor (12) fixed mounting is in lower carriage (1) one side.

5. The noise reduction mechanism of an axial flow fan according to claim 1, characterized in that: a second supporting shaft (6) is installed between the silencing cover (5) and the first motor (7), and the second supporting shaft (6) is arranged on the outer side of the first motor (7) in an annular array mode.

6. The noise reduction mechanism of an axial flow fan according to claim 1, characterized in that: the first silencing layer (16) is a silencing cotton layer, and the second silencing layer (9) is a silencing strip.

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