CN218377043U

CN218377043U - Air guide device for fan noise reduction and fan

Info

Publication number: CN218377043U
Application number: CN202222466800.5U
Authority: CN
Inventors: 王圣平; 李文亮; 钟卓玲
Original assignee: Shenzhen Debao Motor Co ltd
Current assignee: Shenzhen Debao Motor Co ltd
Priority date: 2022-09-16
Filing date: 2022-09-16
Publication date: 2023-01-24
Anticipated expiration: 2032-09-16

Abstract

The utility model discloses an air ducting and fan for fan is fallen and make an uproar, air ducting includes air duct main part (1), air duct main part (1) is equipped with the ventiduct, be equipped with guide vane (12) more than two that separate into individual more than two vent (11) with the ventiduct on air duct main part (1), the orientation of going to the rotor on guide vane (12) is provided with forked tail structure (121). On the basis of the existing air channel, the radian of the guide vane is changed, the gradient of the guide vane is changed, the length of the guide vane is increased, the flow speed of air is increased, the suction of the fan is improved, the dovetail structure is arranged on the guide vane on the air outlet side of the air supply channel of the air channel, and turbulent sound generated when air passes through the air supply channel can be effectively reduced so as to achieve the noise reduction effect.

Description

Air guide device for fan noise reduction and fan

Technical Field

The utility model relates to an air ducting, in particular to an air ducting for making an uproar falls in fan is applied to fan equipment technical field.

Background

The blower is a short form of habit of gas compression and gas conveying machinery in China, and generally comprises a ventilator, a blower and a wind driven generator. The gas compression and gas transmission machinery is a machinery which converts the rotating mechanical energy into gas pressure energy and kinetic energy and transmits the gas out. 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 and the like. The power ventilator utilizes natural wind force and air heat convection caused by indoor and outdoor temperature difference to drive turbine to rotate so as to utilize centrifugal force and negative pressure effect to discharge out stale hot air from indoor

The common fan in the market uses brushless motor at present, and its wind channel stator outside end is with wind channel bottom surface parallel and level to the wind channel is linear slope, and the wind channel suction and the flow of this kind of structure fan are less, so the efficiency ratio of this kind of fan is lower, and the torrent sound of fan motor is great, can produce great noise, produces uncomfortable when making the user use.

Disclosure of Invention

Turbulence sound to the fan motor among the above-mentioned prior art is great, can produce great noise, can produce uncomfortable problem when making the user use, the utility model provides an air ducting for making an uproar falls in fan, on it was through current wind channel basis, do the forked tail structure on the stator of the air supply passageway air-out side in wind channel, the turbulence sound that produces when can effectively slowing down wind and pass through the air supply passageway to reach the effect of making an uproar.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides an air ducting for fan is fallen and is fallen, air ducting includes the air ducting main part, the air ducting main part is equipped with the ventiduct, be equipped with in the air ducting main part and separate into the ventiduct more than two of a plurality of vents, the stator is the arc, the orientation towards the rotor on the stator is provided with the forked tail structure.

Furthermore, the air guide channel main body comprises a position fixing plate and a protective sleeve, the position fixing plate is arranged in the protective sleeve, the position fixing plate is fixedly connected with the inner side, far away from the motor, of the protective sleeve through the guide vane, and a mounting hole for a fan to penetrate through is formed in the position fixing plate.

Further, the position-fixing plate is arranged in the protective sleeve, the position-fixing plate is arranged below the opening of the protective sleeve, the guide vane comprises a first contact point and a second contact point, the first contact point is arranged below the upper edge of the protective sleeve and is higher than the position-fixing plate, and the second contact point is arranged at the upper edge of the position-fixing plate.

Further, the dovetail structure is wave-shaped, and the wave is composed of more than one wave crest and more than one wave trough.

Further, the horizontal included angle alpha is 30-65 degrees; or alpha is 60 deg..

Further, the guide vane cross section is concave arc.

Further, the guide vanes are distributed equidistantly.

Further, the dovetail structure is composed of a peak and two troughs, and the peak is located between the two troughs.

Further, the position fixing plate is provided with a connecting hole and a limiting post towards the direction of the fan, the connecting hole and the limiting post are arranged at intervals along the circumferential direction, the position fixing plate is located on the mounting hole and provided with a limiting hole, the limiting hole corresponds to the limiting post, a reinforcing rib is arranged between the limiting hole and the limiting post, and the position fixing plate is located on the mounting hole and provided with a bearing mounting groove.

Further, the fan comprises the air guide device for fan noise reduction.

The utility model has the advantages that: the utility model provides an air ducting for fan is fallen and is fallen, through current wind channel basis, change stator radian, change the stator gradient, add long stator length, the velocity of flow of increase air improves the suction of fan, and does the forked tail structure on the stator of the air supply passageway air-out side in wind channel, can effectively slow down the turbulent flow sound that produces when wind passes through the air supply passageway to reach the effect of making an uproar.

Drawings

Fig. 1 is a perspective view of an air guide device provided by the present invention;

fig. 2 is a perspective view of the air guide device provided by the present invention;

fig. 3 is an enlarged view of a portion a of the air guide device provided by the present invention;

fig. 4 is a front view of the air guide device provided by the present invention;

fig. 5 is an enlarged view of a portion B of the air guide device provided by the present invention;

fig. 6 is a sectional view of the air guide device according to the present invention.

Reference numerals: 1-an air guide channel main body; 11-a vent; 12-guide vanes; a 121-dovetail configuration; 1211-peak; 1212-trough; 122 — a first contact point; 123-a second contact point; 13-a retention plate; 131-mounting holes; 132-a connection hole; 133-a spacing post; 134-a limiting hole; 135-reinforcing ribs; 136-a bearing mounting groove; 14-a protective sheath; alpha-horizontal included angle.

Detailed Description

In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the following description of the present invention will refer to the accompanying drawings and illustrate embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1-6, the utility model provides a pair of an air ducting for fan is fallen and is made an uproar, wind device include air guide duct main part 1, and air guide duct main part 1 is equipped with the ventiduct, is equipped with on the air guide duct main part 1 to separate into the ventiduct more than two stator 12 of individual more than two vent 11, and stator 12 is the arc for wind flows from vent 11, and the direction towards the rotor on stator 12 is provided with forked tail structure 121. In the concrete implementation, the torrent acoustic ratio of the fan motor on the present market is great, can produce bigger noise, influence the user and use, among the prior art, it is through being equipped with forked tail structure 121 on stator 12, the forked tail structure can be effectively straightened out the air current, the noise reduction, the design of forked tail structure is the shape of simulation swallow tail, the effect of swallow tail is exactly when the wind is gone, can effectually alleviate the resistance of air, let the health become merrily and lightheartedly, and this utility model's structure is simulation swallow tail, reduce the wind and pass through the resistance from the wind-guiding structure, and reduce the noise that the fan produced. The edge of the guide vane 12 is designed into a dovetail structure, so that the guide vane 12 can cut into air more easily, and the disturbance to the air is smaller, thereby effectively reducing the wind resistance, reducing the convection of the air and reducing the noise generated by the airflow, the dovetail structure 12 is arranged in the direction towards the rotor with a higher rotating speed, the wind resistance can be effectively reduced, and the dovetail structure 121 is not arranged on the other side of the guide vane 12, so that the strength of the guide vane can be increased;

in this embodiment, dovetail structure 121 is a wave that is formed from one or more peaks 1211 and one or more valleys 1212. In the specific implementation, the preferred dovetail structure 121 is one peak 1211 and two troughs 1212, the peak 1211 is located between the two troughs 1212, and the peak and the trough form a regular triangle, a sine wave, a staggered sine wave, a right triangle, etc., it should be noted that, in the implementation, the number of the peak 1211 and the trough 1212 of the dovetail structure 121 may be adjusted according to the size of the vent hole without any special requirement.

In the embodiment, the arc-shaped inclination of the guide vane 12 is 30-65 degrees; the guide vane 12 has an arc inclination of 60 °. The inclination of the guide vane 12 needs to be properly set, if 90 degrees is set, the guide vane is linear, the air channel is not changed with the previous air channel, the flow is not large enough, and the suction is not large enough, because the linear guide vane is not smooth enough, the resistance is large, if the inclination of the guide vane is set to be 1-30 degrees, the length of the guide vane is lengthened, the ventilation opening 11 is also lengthened, but the ventilation opening is elongated, the resistance of the ventilation opening is also large, the air flow is blocked, the flow is small, the suction is small, the optimal inclination of the guide vane is 60 degrees, experiments show that the inclination of 60 degrees is the optimal inclination of the guide vane of the utility model, the flow is larger than that of other inclinations, and the suction is stronger.

In the present embodiment, as shown in fig. 5, the guide vane 12 has a concave arc shape in cross section. The concave arc is arranged to enable the guide vane to be smoother, so that air flow of air is smoother, if the arc is directly arranged, the cross section of the guide vane is straight, the air flow is not smooth, the flow speed is not fast, concentrated buffering is achieved, the air is gathered in the concave groove and then rushed out to enter the fan, and the suction force is larger and stronger.

In the present embodiment, the vanes 12 are equally spaced. If the guide vanes 12 are unevenly distributed, which may cause uneven airflow and uneven suction of the fan, some unnecessary dangers may occur, and the guide vanes 12 are equidistantly distributed, which may make the entering airflow more stable.

In this embodiment, in order to further make things convenient for the wind channel structure to install, wind channel main part 1 includes position fixing plate 13 and protective sheath 14, and position fixing plate 13 is arranged in protective sheath 14, and position fixing plate 13 is used for fixing with the fan, and position fixing plate 13 keeps away from the inboard fixed connection of motor through stator 12 and protective sheath 14 for in the protective sheath is arranged in to motor partly, protects the motor, is equipped with the mounting hole 131 that the power supply machine passed on position fixing plate 13. In this embodiment, the position-fixing plate 13 is connected to the protective sleeve 14, or may not be connected to the guide vane 12, or may be connected to the guide vane by a screw, but may affect noise reduction. In this embodiment, the retention plate 13, the guide vane 12 and the protective sleeve 14 may be integrally formed, and have a simple structure and are convenient to process.

In this embodiment, the retention plate 13 is disposed below the opening of the protective sheath 14, the vane 12 includes a first contact point 122 and a second contact point 123, the first contact point 122 is disposed below the upper edge of the protective sheath 14, and the second contact point 123 is disposed flush with the upper edge of the retention plate 13. The position-retaining plate 13 is arranged below the opening of the protective sleeve 14 so that the fan can have better airflow circulation, and is arranged for safety consideration, the first contact point 122 of the guide vane 12 is arranged below the upper edge of the protective sleeve 14, and the second contact point 123 of the guide vane 12 is arranged flush with the upper edge of the position-retaining plate 13, so that the airflow is more unobstructed, and the airflow is not blocked, so that the suction force is larger.

In this embodiment, when the wind channel structure is installed on the fan, in order to guarantee that its installation fixed position fixing plate 13 is equipped with connecting hole 132 and spacing post 133 that are used for being connected with the fan towards the fan direction, connecting hole 133 is used for spacingly, connecting hole 132 is used for fixing with the fan, prevents that the wind channel structure is unstable, connecting hole 132 and spacing post 133 set up along circumference interval, set up through adopting the interval for when the installation uses, its structure is more stable, stability when guaranteeing to use.

In this embodiment, it is located mounting hole 131 at position fixing plate 13 and is equipped with spacing hole 134, spacing hole 134 corresponds spacing post 133 setting, be equipped with strengthening rib 135 between spacing hole 134 and the spacing post 133, connect spacing hole 134 and connecting hole 133 through strengthening rib 135, the reinforcing strength, guarantee stably, different fans can be installed on spacing hole 134 or connecting hole 133 simultaneously, carry on spacingly, position fixing plate 13 is located mounting hole 131 and is equipped with bearing mounting groove 136, just, the installation of bearing is carried out, the commonality of wind channel structure has also been increased simultaneously.

In this embodiment, the fan includes any one of the above air ducting devices for reducing noise of the fan.

In this embodiment, the number of guide vanes is 13, and the 13 guide vanes are the optimum suction force of the fan using the 55-diameter air guide duct.

In this embodiment, the equidistance distributes between the stator, and if the stator inhomogeneous distribution can lead to the air current uneven, the suction of fan is uneven, may take place some unnecessary dangers, and the stator equidistance distributes and makes the entering air current more stable.

It is to be understood that the invention is not limited to the above-described embodiments, and that modifications and variations may be made by those skilled in the art in light of the above teachings, and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.

Claims

1. The utility model provides an air ducting for fan is fallen and is made an uproar, its characterized in that, air ducting includes air duct main part (1), air duct main part (1) is equipped with the ventiduct, be equipped with on air duct main part (1) and separate into stator (12) of individual more than two vent (11) with the ventiduct, stator (12) are the arc, stator (12) are provided with forked tail structure (121) in the direction of rotor.

2. The air guide device for reducing the noise of the fan according to claim 1, wherein the air guide duct main body (1) comprises a position-fixing plate (13) and a protective sleeve (14), the position-fixing plate (13) is disposed in the protective sleeve (14), the position-fixing plate (13) is fixedly connected with the inner side of the protective sleeve (14) far away from the motor through the guide vane (12), and a mounting hole (131) for the motor to pass through is formed in the position-fixing plate (13).

3. The wind guide device for fan noise reduction according to claim 2, wherein the retention plate (13) is disposed in the protective sleeve (14), and the retention plate (13) is disposed below the opening of the protective sleeve (14), the guide vane (12) includes a first contact point (122) and a second contact point (123), the first contact point (122) is disposed below the upper edge of the protective sleeve (14) and above the retention plate (13), and the second contact point (123) is disposed at the upper edge of the retention plate (13).

4. The wind guide device for fan noise reduction according to claim 1, wherein the dovetail structure (121) is of a wave type, and the wave is composed of one or more wave crests (1211) and one or more wave troughs (1212).

5. The wind guiding device for fan noise reduction according to claim 1, wherein a horizontal included angle α is provided between the guide vane (12) and the ventilation opening (4), and the angle α is 30-65 °; or alpha is 60 deg..

6. The wind guiding device for fan noise reduction according to claim 1, wherein the cross section of the guide vane (12) is concave arc.

7. Air guide device for reducing fan noise according to claim 1, wherein the guide vanes (12) are distributed equidistantly.

8. The wind guiding device for fan noise reduction according to claim 4, wherein the dovetail structure (121) has a peak (1211) and two troughs (1212), and the peak (1211) is located between the two troughs (1212).

9. The wind guiding device for reducing the noise of the fan according to claim 2, wherein the fixing plate (13) is provided with a connecting hole (132) and a limiting post (133) towards the fan, the connecting hole (132) and the limiting post (133) are arranged along the circumferential direction at intervals, the fixing plate (13) is provided with a limiting hole (134) at the mounting hole (131), the limiting hole (134) is arranged corresponding to the limiting post (133), a reinforcing rib (135) is arranged between the limiting hole (134) and the limiting post (133), and a bearing mounting groove (136) is arranged at the mounting hole (131) on the fixing plate (13).

10. A fan, characterized in that the fan comprises the air guide device for fan noise reduction according to any one of claims 1 to 9.