CN214945169U

CN214945169U - Mixed flow fan with low use noise

Info

Publication number: CN214945169U
Application number: CN202121609428.8U
Authority: CN
Inventors: 刘斌
Original assignee: Anhui Jinnanfang Fire Ventilation Equipment Co ltd
Current assignee: Anhui Jinnanfang Fire Ventilation Equipment Co ltd
Priority date: 2021-07-15
Filing date: 2021-07-15
Publication date: 2021-11-30
Anticipated expiration: 2031-07-15

Abstract

The utility model discloses an use mixed flow fan that noise is low relates to mixed flow fan technical field, is difficult to the problem of restraines for solving ordinary mixed flow fan noise among the prior art. The novel air duct type air conditioner is characterized in that a separating cylinder is arranged inside the expansion type air duct, the separating cylinder and the expansion type air duct are arranged to be of an integral structure, an outer duct is arranged between the expansion type air duct and the separating cylinder, an inner duct is arranged inside the separating cylinder, an air inlet is arranged inside the expansion type air duct, the air inlet and the expansion type air duct are of an integral structure, the inner duct and the outer duct are communicated with the air inlet, a sound insulation cylinder is arranged outside the expansion type air duct, the sound insulation cylinder and the expansion type air duct are fixedly connected through sealing screws, a dust screen is arranged inside the expansion type air duct, the dust screen and the expansion type air duct are fixedly connected through fastening screws, a base is arranged below the sound insulation cylinder, and the base and the sound insulation cylinder are fixedly connected through fastening screws.

Description

Mixed flow fan with low use noise

Technical Field

The utility model relates to a mixed flow fan technical field specifically is a use low in noise mixed flow fan.

Background

The mixed flow fan is a fan between the axial flow fan and the centrifugal fan, the impeller of the mixed flow fan enables air to do centrifugal motion and axial motion, and the motion of the air in the shell mixes the two motion forms of axial flow and centrifugation, so that the mixed flow fan is called mixed flow.

Mixed flow fans combine the characteristics of axial and centrifugal fans and look more like conventional axial fans, and the housing can have an open inlet, but more commonly it has a right angle bend that allows the motor to be placed outside the duct. The discharging shell slowly expands to slow down the speed of air or gas flow and convert kinetic energy into useful static pressure, the noise of the traditional mixed flow fan is relatively large, the noise reduction scheme of the prior art mostly adopts a small impeller blade area and increases sound insulation materials, but the sound insulation effect is not ideal, and the noise suppression effect is not good enough; therefore, the market urgently needs to develop a mixed flow fan with low noise to help people to solve the existing problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an use mixed flow fan that noise is low to solve the problem that ordinary mixed flow fan noise that provides is difficult to the suppression in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a mixed flow fan with low use noise comprises an expansion type air duct, wherein a separation drum is arranged inside the expansion type air duct, the separation drum and the expansion type air duct are arranged to be of an integral structure, an outer duct is arranged between the expansion type air duct and the separation drum, an inner duct is arranged inside the separation drum, an air inlet is arranged inside the expansion type air duct, the air inlet and the expansion type air duct are arranged to be of an integral structure, and the inner duct and the outer duct are both communicated with the air inlet.

Preferably, a sound insulation barrel is installed on the outer side of the expansion type air duct, the sound insulation barrel is fixedly connected with the expansion type air duct through a sealing screw, a dustproof net is installed inside the expansion type air duct, the dustproof net is fixedly connected with the expansion type air duct through a fastening screw, a base is installed below the sound insulation barrel, and the base is fixedly connected with the sound insulation barrel through the fastening screw.

Preferably, a diffusion cylinder is installed at one end of the expansion type air cylinder, the diffusion cylinder is fixedly connected with the expansion type air cylinder through a fastening screw, a flow deflector is installed inside the separation cylinder, the flow deflector is welded with the separation cylinder, an air outlet is formed inside the diffusion cylinder, and the air outlet and the diffusion cylinder are arranged into an integral structure.

Preferably, the inside of separating a section of thick bamboo is installed the support, and the support with separate a section of thick bamboo and pass through fastening screw fixed connection, the outer protective housing is installed to the inboard of support, and outer protective housing passes through fastening screw fixed connection with the support.

Preferably, one side of outer protective housing is provided with the impeller, the internally mounted of outer protective housing has the fixed bridge, and fixed bridge and outer protective housing fixed connection, the motor is installed to the inboard of fixed bridge, and motor and fixed bridge fixed connection.

Preferably, the drive shaft is installed to one side of motor, and the drive shaft passes through shaft coupling fixed connection with the motor, the internally mounted of outer protective housing has soundproof cotton, and soundproof cotton passes through fastening screw fixed connection with the outer protective housing.

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

1. the utility model divides the wind barrel of the traditional mixed flow fan into two parts by arranging the separating barrel and arranging the separating barrel in the expansion type wind barrel, and two channels are additionally arranged, one is an outer duct and the other is an inner duct, the mixed flow of the mixed flow fan flows in the inner duct, namely, the inner culvert not only has air moving axially, but also has air moving centrifugally, the outer culvert only has air moving axially, which is direct current air, so that the outer side of the mixed flow air is wrapped by a stream of direct flow air, and the sound of the friction between the direct flow air and the object is smaller than the sound of the friction between the mixed flow air and the stream, thereby play the sound effect that the suppression mixed flow air friction sent, utilize this ingenious structure to realize the effect to the further noise suppression of mixed flow fan, the existing syllable-dividing means of deuterogamying to improve the syllable-dividing effect of mixed flow fan greatly.

2. The utility model discloses a through soundproof cotton's setting, soundproof cotton sets up the inside at the outer protective housing to soundproof cotton still wraps up the motor completely, through the sound that soundproof cotton isolated motor sent, plays the effect that reduces the motor noise, thereby further improves the syllable-dividing effect of this mixed flow fan.

Drawings

Fig. 1 is an overall schematic view of a low-noise mixed flow fan according to the present invention;

fig. 2 is a schematic view of the internal structure of a low-noise mixed flow fan according to the present invention;

fig. 3 is the internal structure schematic diagram of the outer protective shell of the present invention.

In the figure: 1. an expansion type air duct; 2. a sound-insulating tube; 3. a base; 4. a diffusion cylinder; 5. an air inlet; 6. a dust screen; 7. an inner duct; 8. an outer duct; 9. a support; 10. an outer protective shell; 11. an impeller; 12. a flow deflector; 13. a motor; 14. a fixed bridge; 15. a drive shaft; 16. sound insulation cotton; 17. a separating cylinder; 18. and (7) air outlet.

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.

Referring to fig. 1-3, the present invention provides an embodiment: the utility model provides a use mixed flow fan of low noise, includes expanded dryer 1, the inside of expanded dryer 1 is provided with separates a section of thick bamboo 17, separate a section of thick bamboo 17 and set up to a body structure with expanded dryer 1, be provided with outer duct 8 between expanded dryer 1 and the section of thick bamboo 17, separate the inside of a section of thick bamboo 17 and be provided with interior duct 7, the inside of expanded dryer 1 is provided with air intake 5, air intake 5 sets up to a body structure with expanded dryer 1, interior duct 7 and outer duct 8 all communicate with air intake 5.

Further, a sound insulation barrel 2 is installed on the outer side of the expansion type air duct 1, the sound insulation barrel 2 is fixedly connected with the expansion type air duct 1 through a sealing screw, a dustproof net 6 is installed inside the expansion type air duct 1, the dustproof net 6 is fixedly connected with the expansion type air duct 1 through a fastening screw, a base 3 is installed below the sound insulation barrel 2, the base 3 is fixedly connected with the sound insulation barrel 2 through the fastening screw, and the sound insulation barrel 2 is arranged on the outer side of the expansion type air duct 1 to achieve the last sound insulation work.

Further, a diffusion tube 4 is installed at one end of the expansion type air duct 1, the diffusion tube 4 is fixedly connected with the expansion type air duct 1 through fastening screws, a flow deflector 12 is installed inside a separation tube 17, the flow deflector 12 is welded to the separation tube 17, an air outlet 18 is formed in the diffusion tube 4, the air outlet 18 and the diffusion tube 4 are arranged to be of an integral structure, the flow deflector 12 is provided with a plurality of air ducts, and the inner duct 7 and the outer duct 8 are communicated with the air outlet 18.

Further, a support 9 is installed inside the separating cylinder 17, the support 9 is fixedly connected with the separating cylinder 17 through fastening screws, an outer protective shell 10 is installed on the inner side of the support 9, the outer protective shell 10 is fixedly connected with the support 9 through fastening screws, and the outer protective shell 10 is used for protecting the motor 13.

Further, an impeller 11 is arranged on one side of the outer protective shell 10, a fixed bridge 14 is installed inside the outer protective shell 10, the fixed bridge 14 is fixedly connected with the outer protective shell 10, a motor 13 is installed on the inner side of the fixed bridge 14, the motor 13 is fixedly connected with the fixed bridge 14, and the impeller 11 is not in contact with the outer protective shell 10.

Further, a driving shaft 15 is installed on one side of the motor 13, the driving shaft 15 is fixedly connected with the motor 13 through a coupler, soundproof cotton 16 is installed inside the outer protective shell 10, the soundproof cotton 16 is fixedly connected with the outer protective shell 10 through fastening screws, and the impeller 11 is connected with the driving shaft 15.

The working principle is as follows: when the air-cooling type air duct is used, the motor 13 is started, the motor 13 drives the impeller 11 to rotate at a high speed through the driving shaft 15, the impeller 11 rotates at a high speed, air is sucked into the expansion type air duct 1 from the air inlet 5, the air is filtered by the dustproof net 6, the air entering the expansion type air duct 1 is divided into two parts by the separating drum 17, most of the air directly enters the inner duct 7, the air moving axially and the air moving centrifugally are formed under the stirring action of the impeller 11 and the backflow action of the guide vane 12, mixed flow is formed, the air entering the outer duct 8 is compressed to form direct flow moving axially, and finally the two air flows are collected at the air outlet 18 of the diffusion drum 4 and discharged.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A mixed flow fan with low noise comprises an expansion type air duct (1), and is characterized in that: the air inlet device is characterized in that a separating cylinder (17) is arranged inside the expansion type air cylinder (1), the separating cylinder (17) and the expansion type air cylinder (1) are arranged into an integral structure, an outer duct (8) is arranged between the expansion type air cylinder (1) and the separating cylinder (17), an inner duct (7) is arranged inside the separating cylinder (17), an air inlet (5) is arranged inside the expansion type air cylinder (1), the air inlet (5) and the expansion type air cylinder (1) are arranged into an integral structure, and the inner duct (7) and the outer duct (8) are both communicated with the air inlet (5).

2. A mixed flow fan using low noise according to claim 1, wherein: the novel air duct is characterized in that a sound insulation barrel (2) is installed on the outer side of the expansion type air duct (1), the sound insulation barrel (2) is fixedly connected with the expansion type air duct (1) through a sealing screw, a dustproof net (6) is installed inside the expansion type air duct (1), the dustproof net (6) is fixedly connected with the expansion type air duct (1) through a fastening screw, a base (3) is installed below the sound insulation barrel (2), and the base (3) is fixedly connected with the sound insulation barrel (2) through the fastening screw.

3. A mixed flow fan using low noise according to claim 1, wherein: the air-conditioning fan comprises an expansion type air duct (1), and is characterized in that a diffusion tube (4) is installed at one end of the expansion type air duct (1), the diffusion tube (4) is fixedly connected with the expansion type air duct (1) through fastening screws, a flow deflector (12) is installed inside a separation tube (17), the flow deflector (12) is welded with the separation tube (17), an air outlet (18) is formed in the diffusion tube (4), and the air outlet (18) and the diffusion tube (4) are arranged into an integral structure.

4. A mixed flow fan using low noise according to claim 1, wherein: separate the internally mounted of a section of thick bamboo (17) and have support (9), and support (9) with separate a section of thick bamboo (17) and pass through fastening screw fixed connection, outer protective housing (10) are installed to the inboard of support (9), and outer protective housing (10) pass through fastening screw fixed connection with support (9).

5. The mixed flow fan of claim 4, wherein: one side of outer protective housing (10) is provided with impeller (11), the internally mounted of outer protective housing (10) has fixed bridge (14), and fixed bridge (14) and outer protective housing (10) fixed connection, motor (13) are installed to the inboard of fixed bridge (14), and motor (13) and fixed bridge (14) fixed connection.

6. The mixed flow fan of claim 5, wherein: drive shaft (15) are installed to one side of motor (13), and drive shaft (15) pass through shaft coupling fixed connection with motor (13), the internally mounted of outer protective housing (10) has soundproof cotton (16), and soundproof cotton (16) pass through fastening screw fixed connection with outer protective housing (10).