CN213540763U

CN213540763U - Muffling type mixed flow fan

Info

Publication number: CN213540763U
Application number: CN202021920747.6U
Authority: CN
Inventors: 叶咏怡
Original assignee: Shaoxing Kaixiang Civil Air Defense Equipment Co ltd
Current assignee: Shaoxing Kaixiang Civil Air Defense Equipment Co ltd
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2021-06-25
Anticipated expiration: 2030-09-04

Abstract

The utility model discloses a noise elimination type mixed flow fan, including fan shell, motor and flabellum, the flabellum is connected with the motor, and the motor is located the fan shell, and with fan shell inner wall connection, the inner wall of fan shell one end is equipped with the noise elimination pad, is equipped with an installation section of thick bamboo in the fan shell, and the motor is located an installation section of thick bamboo, and with installation section of thick bamboo fixed connection, is equipped with securing device on the inner wall of an installation section of thick bamboo, securing device is used for fixed motor to prevent motor vibrations, the utility model discloses it is rational in infrastructure, when reducing the wind through increasing the noise elimination pad and entering into the fan shell, the noise that the fan shell vibrations and produce, and fixed the motor through securing device, reduce the range of vibration of motor when using to reduce the noise, finally reach the noise that produces when reducing.

Description

Muffling type mixed flow fan

Technical Field

The utility model relates to a fan field, in particular to noise reduction type mixed flow fan.

Background

The mixed flow fan is a fan between an axial flow fan and a centrifugal fan, an impeller of the mixed flow fan enables air to do centrifugal motion and axial motion, but the air pressure coefficient is higher than that of the axial flow fan, the flow coefficient is larger than that of the centrifugal fan, the mixed flow fan fills the blank between the axial flow fan and the centrifugal fan, and the mixed flow fan has the characteristics of high pressure, large flow, compact structure, small rotating speed, small volume, light weight, high efficiency, convenience in installation and the like. The mixed flow fan is widely used for ventilation and fire-fighting high-temperature smoke discharge in tunnels, underground garages, high-grade civil buildings, metallurgy, factories and mines and other places.

However, when the ordinary mixed flow fan works, the fan shell is driven to vibrate by the entering of the wind into the fan shell, and the vibration caused by the running of the motor causes the fan to generate larger noise.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an amortization type mixed flow fan has at the fan during operation, reduces the vibrations of fan shell and motor to reduce the advantage of noise.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a noise elimination type mixed flow fan, includes fan shell, motor and flabellum, the flabellum is connected with the motor, the motor is located the fan shell, and with fan shell inner wall connection, the inner wall of fan shell one end is equipped with the noise elimination pad, be equipped with the installation section of thick bamboo in the fan shell, the motor is located the installation section of thick bamboo, and with installation section of thick bamboo fixed connection, be equipped with securing device on the inner wall of installation section of thick bamboo, securing device is used for fixed motor to prevent the motor vibrations.

Preferably, the fan shell comprises an outer shell and an inner shell, a sound insulation cavity is arranged between the outer shell and the inner shell, and a sound insulation plate is arranged in the sound insulation cavity and used for weakening noise in the fan shell.

Preferably, one end of the fan shell is provided with a protective cover, the protective cover is sleeved at one end of the fan shell and matched with the fan shell, and the fan shell is provided with a fixing device which is used for fixing the protective cover.

Preferably, the fixing device comprises a fixing block and a fixing buckle, the fixing block is located on the protective cover, the fixing buckle is fixedly connected with the outer shell, and the fixing buckle is matched with the fixing block.

Preferably, the fixing device comprises a support and a shock pad, the motor is located on the support and fixedly connected with the support, the shock pad is filled between the installation barrel and the motor, and the shock pad is used for slowing down the vibration of the motor.

Preferably, a plurality of support plates are fixedly arranged on the outer side of the mounting cylinder and fixedly connected with the inner wall of the fan shell.

Preferably, the support plates are arranged obliquely, and the obliquely arranged support plates are used for reducing wind noise.

Preferably, a stabilizing sleeve is arranged on an output shaft of the motor and used for stabilizing the output shaft of the motor, a bearing is arranged on the outer side of the stabilizing sleeve, a plurality of supporting rods are arranged on the outer edge of the bearing, and the other ends of the supporting rods are fixedly connected with the inner wall of the fan shell.

Preferably, a heat dissipation frame is fixedly arranged at one end of the installation cylinder, a mounting groove is formed in one end of the heat dissipation frame, one end of the motor is located in the mounting groove and is fixedly connected with the mounting groove, a plurality of heat dissipation fins are arranged on the side wall of the heat dissipation frame, and the heat dissipation fins are in contact with the outer wall of the motor.

Preferably, a junction box is fixedly arranged on the fan casing and used for electrifying the motor.

The utility model has the advantages that: the shock pad surrounds the outside at the motor, reduce the vibration amplitude of motor, thereby reduce the noise that the motor produced, the adapter sleeve supports the output shaft of motor, the output shaft that makes the motor can support the influence that blocks flabellum gravity, thereby it rotates to be that the more smooth and easy drive flabellum of motor can, prevent the noise that the flabellum undulates and brings, the noise elimination pad has reduced the vibrations of fan shell, thereby reduce the noise that the fan shell produced, the acoustic celotex board can prevent that the inside noise of fan shell from spreading, further weaken the noise when the fan moves, thereby it can reach the standard of low noise to be the fan.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment;

FIG. 2 is a sectional view of the embodiment;

fig. 3 is an enlarged view of region a in fig. 2.

Reference numerals: 1. a fan housing; 2. a motor; 3. a fan blade; 4. a sound-deadening pad; 5. mounting the cylinder; 6. an outer housing; 7. an inner housing; 8. a sound insulating board; 9. a protective cover; 10. a fixing buckle; 11. a fixed block; 12. a junction box; 13. a shock pad; 14. a support plate; 15. a stabilizing sleeve; 16. a bearing; 17. a support bar; 18. a heat dissipation frame; 19. and a heat sink.

Detailed Description

The following is only the preferred embodiment of the present invention, the protection scope is not limited to this embodiment, and all technical solutions belonging to the idea of the present invention should belong to the protection scope of the present invention. In which like parts are designated by like reference numerals. It should be noted that as used in the following description, the terms "front," "back," "left," "right," "upper," and "lower" refer to directions in the drawings, and the terms "bottom" and "top," "inner," and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

As shown in fig. 1 and 2, the muffling type mixed flow fan comprises a fan shell 1, a motor 2 and fan blades 3. The fan shell 1 is fixedly provided with a junction box 12, and the junction box 12 can be connected with an external power supply, so that the motor 2 is electrified. Flabellum 3 and motor 2's output shaft fixed connection, when motor 2 starts, can drive flabellum 3 and rotate to make the fan begin work.

As shown in fig. 1 and 2, a mounting cylinder 5 is arranged in a fan shell 1, and a fixing device is arranged on the inner wall of the mounting cylinder 5 and comprises a support and a shock pad 13. The motor 2 is placed on the bracket and is fixedly connected with the bracket. The shock pad 13 is located the space between the inner wall of the installation cylinder 5 and the motor 2, the motor 2 can vibrate during operation, and the shock pad 13 can reduce the vibration amplitude of the motor 2, so that the noise generated by the vibration of the motor 2 is reduced.

As shown in fig. 1 and 2, a stabilizing sleeve 15 is arranged on an output shaft of the motor 2, a bearing 16 is arranged outside the stabilizing sleeve 15, a plurality of support rods 17 are arranged on the outer edge of the bearing 16, and the other ends of the support rods 17 are fixedly connected with the inner wall of the fan casing 1. A plurality of bracing pieces 17 support stable cover 15, make stable cover 15 can support the output shaft of motor 2 to make motor 2 output shaft can be more stable. After the rotation of the output shaft of the motor 2 is stable, the rotation of the fan blades 3 can be stable, and the noise generated by the rotation of the fan blades 3 is reduced.

As shown in fig. 2, a plurality of support plates 14 are fixedly arranged on the outer side of the mounting tube 5, the plurality of support plates 14 are arranged in an inclined manner, and the inclined support plates 14 can reduce wind noise, so that noise is reduced. The one end of installation section of thick bamboo 5 sets firmly heat dissipation frame 18, and the one end of heat dissipation frame 18 is equipped with the mounting groove, and the one end of motor 2 is inlayed and is established in the mounting groove, is equipped with a plurality of fin 19 on the lateral wall of heat dissipation frame 18, and the heat that produces on the fin 19 and the outer wall contact of motor 2 can be derived fast to prevent that motor 2 from being overheated, make motor 2 can normally work.

As shown in fig. 2, the inner wall of one end of the fan shell 1 is provided with a noise elimination pad 4, the noise elimination pad 4 is located at an air inlet of the fan shell 1, and the noise elimination pad 4 can reduce the vibration generated by the fan shell 1 when wind enters the fan shell 1, so that the noise generated by the fan shell 1 is reduced.

As shown in fig. 2, the fan casing 1 includes an outer casing 6 and an inner casing 7, a sound insulation cavity is provided between the outer casing 6 and the inner casing 7, and a sound insulation board 8 is provided in the sound insulation cavity. The baffle 8 can attenuate noise emanating from the side wall of the fan housing 1, thereby further attenuating noise during fan operation.

As shown in fig. 1 and 3, a protective cover 9 is arranged at one end of a fan casing 1, the fan casing 1 is provided with a fixing device, the fixing device comprises a fixing block 11 and a fixing buckle 10, the fixing block 11 is positioned on the protective cover 9, and the fixing buckle 10 is fixedly connected with an outer casing 6. The protective cover 9 is sleeved at one end of the fan shell 1 and is buckled on the fixing block 11 by the fixing buckle 10, so that the fan shell 1 and the protective cover 9 are fixed. One side of protection casing 9 is netted, can prevent that external debris from entering into in fan shell 1 to prevent that the fan from being destroyed.

The above-mentioned embodiments further explain in detail the technical problems, technical solutions and advantages solved by the present invention, and it should be understood that the above only is a specific embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a noise elimination type mixed flow fan, includes fan shell (1), motor (2) and flabellum (3), its characterized in that, flabellum (3) are connected with motor (2), motor (2) are located fan shell (1), and with fan shell (1) inner wall connection, the inner wall of fan shell (1) one end is equipped with noise elimination pad (4), be equipped with installation section of thick bamboo (5) in fan shell (1), motor (2) are located installation section of thick bamboo (5), and with installation section of thick bamboo (5) fixed connection, be equipped with securing device on the inner wall of installation section of thick bamboo (5), securing device is used for fixed motor (2) to prevent motor (2) vibrations.

2. The muffling type mixed flow fan according to claim 1, wherein the fan shell (1) comprises an outer shell (6) and an inner shell (7), a sound insulation cavity is arranged between the outer shell (6) and the inner shell (7), a sound insulation plate (8) is arranged in the sound insulation cavity, and the sound insulation plate (8) is used for reducing noise in the fan shell (1).

3. An anechoic mixed flow fan according to claim 1, characterized in that a protective cover (9) is provided at one end of the fan housing (1), the protective cover (9) is fitted over one end of the fan housing (1) and is fitted to the fan housing (1), and the fan housing (1) is provided with fixing means for fixing the protective cover (9).

4. The muffling type mixed flow fan according to claim 3, wherein the fixing device comprises a fixing block (11) and a fixing buckle (10), the fixing block (11) is located on the protective cover (9), the fixing buckle (10) is fixedly connected with the outer shell (6), and the fixing buckle (10) is matched with the fixing block (11).

5. The muffling type mixed flow fan according to claim 1, wherein the stabilizing device comprises a support and a shock pad (13), the motor (2) is located on the support and fixedly connected with the support, the shock pad (13) is filled between the mounting cylinder (5) and the motor (2), and the shock pad (13) is used for reducing the vibration of the motor (2).

6. The muffling type mixed flow fan according to claim 1, wherein a plurality of support plates (14) are fixedly arranged on the outer side of the mounting cylinder (5), and the support plates (14) are fixedly connected with the inner wall of the fan shell (1).

7. An acoustic mixed flow fan according to claim 6, wherein the plurality of support plates (14) are arranged in an inclined manner, and the inclined support plates (14) are used for reducing wind noise.

8. The muffling type mixed flow fan according to claim 1, wherein a stabilizing sleeve (15) is arranged on an output shaft of the motor (2), the stabilizing sleeve (15) is used for stabilizing the output shaft of the motor (2), a bearing (16) is arranged on the outer side of the stabilizing sleeve (15), a plurality of supporting rods (17) are arranged on the outer edge of the bearing (16), and the other ends of the supporting rods (17) are fixedly connected with the inner wall of the fan shell (1).

9. The muffling type mixed flow fan according to claim 8, wherein a heat dissipation frame (18) is fixedly arranged at one end of the mounting cylinder (5), a mounting groove is formed at one end of the heat dissipation frame (18), one end of the motor (2) is positioned in the mounting groove and fixedly connected with the mounting groove, a plurality of heat dissipation fins (19) are arranged on the side wall of the heat dissipation frame (18), and the heat dissipation fins (19) are in contact with the outer wall of the motor (2).

10. The muffling type mixed flow fan according to claim 1, wherein a junction box (12) is fixedly arranged on the fan shell (1), and the junction box (12) is used for electrifying the motor (2).