CN211116678U

CN211116678U - Low-noise centrifugal fan

Info

Publication number: CN211116678U
Application number: CN201922095912.2U
Authority: CN
Inventors: 陈敬轩
Original assignee: Jiangxi Ruilang Biotechnology Co ltd
Current assignee: Jiangxi Ruilang Biotechnology Co ltd
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2020-07-28
Anticipated expiration: 2029-11-28

Abstract

The utility model provides a low-noise centrifugal fan, belonging to the technical field of centrifugal fans, which comprises a machine case, wherein fixing frames are welded on the outer wall of the circumference of the bottom of the machine case and are distributed at equal intervals, and the outer wall of one side of each fixed frame is welded with a spring, the outer wall of the top end of each spring is welded on the outer wall of the bottom of the case, and the outer wall of one side opposite to each fixing frame is provided with the same motor, the outer wall of the circle center of the bottom of the case is provided with a bearing hole, the inner wall of the circumference of the bearing hole is fixed with a rotating shaft through a bearing, the output shaft of the motor is connected with one end of the rotating shaft through a coupler, the outer wall of the top end of the rotating shaft is provided with an air guide mechanism, the outer wall of one side of the case is provided with an air inlet mechanism, the outer, the air inlet mechanism comprises an air guide shell, an air inlet and a sponge plate, and a mounting hole is formed in the outer wall of one side of the case. The utility model discloses can adsorb magnetic particle thing in the wind, can cut off the noise sound wave, promote the effect of making an uproar of falling.

Description

Low-noise centrifugal fan

Technical Field

The utility model belongs to the technical field of centrifugal fan, concretely relates to low noise centrifugal fan.

Background

The centrifugal fan is a driven fluid machine which increases the pressure of gas and discharges the gas by means of input mechanical energy. Centrifugal fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and draught of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selecting grains; wind tunnel wind source and air cushion boat inflation and propulsion.

Through search, the Chinese patent with the publication number of CN204878005U discloses a top cover low-noise centrifugal fan. The air-suction type fan is characterized by comprising a bottom plate, a rectangular shell is arranged on the bottom plate, a cavity is formed in the front side of the shell, a motor is arranged in the cavity, a main shaft of the motor stretches into the shell, an impeller is arranged on the main shaft of the motor, an air suction opening is formed in the bottom plate right below the impeller, and an air outlet is formed in the upper portion of the shell.

However, in the above technical solution, noise reduction is performed only by using the noise reduction cotton, which is not only low in noise reduction but also needs to be replaced, so that there is a problem of poor noise reduction effect.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a low noise centrifugal fan aims at solving the poor problem of noise reduction effect among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme: the wind power generation machine comprises a case, chassis bottom circumference outer wall welding has the mount that the equidistance distributes, and every mount one side outer wall all welding has the spring, every spring top outer wall all welds on the bottom outer wall of chassis, and the relative one side outer wall of every mount all is provided with same motor, and chassis bottom centre of a circle outer wall is opened there is the dead eye, and the circumference inner wall of dead eye is fixed with the pivot through the bearing, and the motor output shaft is connected with the one end of pivot through the shaft coupling, and the top outer wall of pivot is provided with wind guiding mechanism, and one side outer wall of chassis is provided with air inlet mechanism, and.

In order to channel into quick-witted case with wind, conduct the utility model relates to an it is preferred, air inlet mechanism includes wind-guiding shell, air intake and sponge board, and quick-witted case one side outer wall opens there is the mounting hole, and the wind-guiding shell is close to one side outer wall of mounting hole and passes through the bolt fastening on one side outer wall of quick-witted case.

In order to promote to wash hand to the steam in the air, as the utility model relates to an it is preferred, the opposite side outer wall of wind-guiding shell is opened there is the air intake, and the both sides inner wall of air intake all bonds and has the sponge board.

In order to install and fix the fan blade, conduct the utility model relates to an it is preferred, air guide mechanism includes connecting axle, solid fixed cylinder, fan blade, connecting axle, rubber sand grip and metal magnetic path, and the bottom outer wall of connecting axle is connected with the top outer wall of pivot through the screw thread.

In order to promote the machine incasement fall make an uproar and remove dust, as the utility model relates to an it is preferred, the circumference outer wall of connecting axle is provided with the solid fixed cylinder, and the circumference outer wall welding of solid fixed cylinder has the fan blade that the equidistance distributes, and one side outer wall that the connecting axle was kept away from to every fan blade all bonds has the rubber sand grip, and same metal magnetic path has all been welded to the relative one side outer wall of per two fan blades.

In order to remove dust to the wind when airing exhaust, as the utility model relates to an it is preferred, air-out mechanism is including airing exhaust fill, air outlet, dust screen and fixed axle, and quick-witted roof portion outer wall opens there is the fixed orifices, the circumference outer wall of airing exhaust fill passes through the bolt fastening on the circumference inner wall of fixed orifices, it has the air outlet to air exhaust fill top outer wall open, the circumference inner wall of air outlet is provided with the dust screen, the top outer wall of dust screen is opened there is circular fixed orifices, the circumference inner wall welding of circular fixed orifices has the fixed axle, the bottom outer wall of fixed axle is connected with the top outer wall of connecting axle through the screw.

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

1. through be provided with the sponge board in the air intake, be favorable to carrying out effective drying to the inside wind of entering device.

2. Through being provided with spring and mount, can promote the stability of whole device effectively.

3. Through being provided with the rubber sand grip, can cut off the noise sound wave to played the effect of making an uproar that falls, and through being provided with the metal magnetic path, can effectively adsorb magnetic particles in the wind, thereby be favorable to having protected the safety of fan blade.

Drawings

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

fig. 1 is a schematic view of the structure of the present invention;

fig. 2 is a schematic top view of the present invention;

fig. 3 is a schematic structural view of a fan blade of the present invention;

in the figure: 1-a motor; 2-a fixing frame; 3-a spring; 4-a case; 5-an exhaust funnel; 6-wind guide shell; 7-air inlet; 8-a sponge board; 9-air outlet; 10-dust screen; 11-a fixed shaft; 12-a connecting shaft; 13-fan blades; 14-rubber ribs; 15-a fixed cylinder; 16-metal magnetic block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides the following technical solutions: including quick-witted case 4, the welding of 4 bottom circumference outer walls of quick-witted case has the mount 2 that the equidistance distributes, and the outer wall of 2 one sides of every mount has all welded spring 3, every 3 top outer walls of spring all weld on the bottom outer wall of quick-witted case 4, and the outer wall of 2 relative one sides of every mount all has same motor 1 through the bolt fastening, and open the centre of a circle outer wall of 4 bottom of quick-witted case has the dead eye, and the circumference inner wall of dead eye is fixed with the pivot through the bearing, and the 1 output shaft of motor is connected with the one end of pivot through the shaft coupling, and the top outer wall of pivot is provided with wind guide mechanism, and one side.

The utility model discloses an in the embodiment, when wind gets into quick-witted incasement 4 from air inlet mechanism in, can carry out the wind-guiding through wind guiding mechanism fast, and spring 3 and mount 2 that machine case 4 bottom set up have promoted the stability of integrated device effectively.

Specifically, the air inlet mechanism comprises an air guide shell 6, an air inlet 7 and a sponge plate 8, a mounting hole is formed in the outer wall of one side of the case 4, the outer wall of one side, close to the mounting hole, of the air guide shell 6 is fixed to the outer wall of one side of the case 4 through a bolt, the air inlet 7 is formed in the outer wall of the other side of the air guide shell 6, and the sponge plate 8 is bonded to the inner walls of the two sides of the air inlet 7.

In this embodiment: when wind enters the wind guide shell 6 from the wind inlet 7, water vapor in the air can be effectively absorbed by the sponge plate 8, so that the wind entering the device can be effectively dried.

Specifically, air guide mechanism includes connecting axle 12, a fixed section of thick bamboo 15, fan blade 13, connecting axle 12, rubber sand grip 14 and metal magnetic path 16, and the bottom outer wall of connecting axle 12 is connected with the top outer wall of pivot through the screw thread, and the circumference outer wall of connecting axle 12 has a fixed section of thick bamboo 15 through the screw thread fastening, and the circumference outer wall welding of a fixed section of thick bamboo 15 has the fan blade 13 that the equidistance distributes, every one side outer wall that connecting axle 12 was kept away from to fan blade 13 all bonds and has rubber sand grip 14, and the outer wall all welds of one side every two relative to fan blade 13 has same.

In this embodiment: through the motor 1 that starts, it is rotatory to drive the pivot, rotatory pivot drives the fan blade 13 on the fixed cylinder 15 circumference rotatory, and high-speed rotatory fan blade 13 with gas acceleration, then slow down, change the flow direction, make the kinetic energy convert the potential energy, the rubber sand grip 14 of every fan blade 13 one side can cut off the noise sound wave simultaneously, thereby played the effect of making an uproar that falls, and every metal magnetic path 16 can be effectively adsorb the magnetic particle thing in the wind, thereby be favorable to having protected the safety of fan blade 13.

Specifically, air-out mechanism is including the fill 5 of airing exhaust, air outlet 9, dust screen 10 and fixed

axle

11, and 4 top outer walls of machine case open there is the fixed orifices, the circumference outer wall of the fill 5 of airing exhaust is fixed in on the circumference inner wall of fixed orifices through the bolt, 5 top outer walls of the fill 5 of airing exhaust are opened there is air outlet 9, the circumference inner wall of air outlet 9 has dust screen 10 through the bolt fastening, the top outer wall of dust screen 10 is opened there is circular fixed orifices, the circumference inner wall welding of circular fixed orifices has fixed axle 11, the bottom outer wall of fixed axle 11 is connected with the top outer wall of connecting axle 12 through the screw thread.

In this embodiment: when wind passes through the top end of the exhaust funnel 5, particulate matters in the air can be filtered, so that the cleanliness of the air is improved, and meanwhile, the stability of the dust screen 10 is also ensured by the arrangement of the fixed shaft 11.

The utility model discloses a theory of operation and use flow: when wind enters the wind guide shell 6 from the wind inlet 7, the water vapor in the air can be effectively absorbed by the sponge plate 8, thereby facilitating effective drying of the air entering the interior of the device, which then enters the cabinet 4, the rotating shaft is driven to rotate by the started motor 1, the rotating shaft drives the fan blades 13 on the circumference of the fixed cylinder 15 to rotate, the fan blades 13 rotating at high speed accelerate the gas, then the speed is reduced, the flow direction is changed, the kinetic energy is converted into potential energy, meanwhile, the rubber raised strips 14 on one side of each fan blade 13 can cut off noise sound waves, thereby having the effect of noise reduction, and each metal magnetic block 16 can effectively adsorb magnetic particles in wind, thereby being beneficial to protecting the safety of the fan blades 13, and then filtering the particles in the air when the wind passes through the top end of the exhaust funnel 5, thereby improving the cleanliness of air, and simultaneously, the arrangement of the fixed shaft 11 also ensures the stability of the dust screen 10.

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 modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. 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

1. The utility model provides a low noise centrifugal fan which characterized in that: including quick-witted case (4), the welding of machine case (4) bottom circumference outer wall has mount (2) that the equidistance distributes, and the outer wall all welds spring (3) in every mount (2) one side, every spring (3) top outer wall all welds on the bottom outer wall of machine case (4), and the relative one side outer wall of every mount (2) all is provided with same motor (1), and open the centre of a circle outer wall of machine case (4) bottom has the dead eye, and the circumference inner wall of dead eye is fixed with the pivot through the bearing, and motor (1) output shaft is connected with the one end of pivot through the shaft coupling, and the top outer wall of pivot is provided with wind guide mechanism, and one side outer wall of machine case (4) is provided with air inlet mechanism, and machine.

2. A low noise centrifugal fan according to claim 1, wherein: the air inlet mechanism comprises an air guide shell (6), an air inlet (7) and a sponge plate (8), a mounting hole is formed in the outer wall of one side of the case (4), and the outer wall of one side, close to the mounting hole, of the air guide shell (6) is fixed to the outer wall of one side of the case (4) through bolts.

3. A low noise centrifugal fan according to claim 2, wherein: an air inlet (7) is formed in the outer wall of the other side of the air guide shell (6), and sponge plates (8) are bonded to the inner walls of the two sides of the air inlet (7).

4. A low noise centrifugal fan according to claim 1, wherein: the air guide mechanism comprises a connecting shaft (12), a fixing cylinder (15), fan blades (13), a connecting shaft (12), rubber raised strips (14) and metal magnetic blocks (16), and the outer wall of the bottom end of the connecting shaft (12) is connected with the outer wall of the top end of the rotating shaft through threads.

5. A low noise centrifugal fan according to claim 4, wherein: the fan blade fixing device is characterized in that a fixed cylinder (15) is arranged on the outer wall of the circumference of the connecting shaft (12), fan blades (13) distributed at equal intervals are welded on the outer wall of the circumference of the fixed cylinder (15), rubber raised lines (14) are bonded on the outer wall of one side, away from the connecting shaft (12), of each fan blade (13), and the same metal magnet (16) is welded on the outer wall of one side, opposite to each other, of each two fan blades (13).

6. A low noise centrifugal fan according to claim 1, wherein: air-out mechanism is including blowing out fill (5), air outlet (9), dust screen (10) and fixed axle (11), and quick-witted case (4) top outer wall is opened there is the fixed orifices, the circumference outer wall of blowing out fill (5) is fixed in on the circumference inner wall of fixed orifices through the bolt fastening, blowing out fill (5) top outer wall is opened there is air outlet (9), the circumference inner wall of air outlet (9) is provided with dust screen (10), the top outer wall of dust screen (10) is opened there is circular fixed orifices, the circumference inner wall welding of circular fixed orifices has fixed axle (11), the bottom outer wall of fixed axle (11) is connected with the top outer wall of connecting axle (12) through the screw thread.