CN210686365U

CN210686365U - Amortization type tunnel fan

Info

Publication number: CN210686365U
Application number: CN201920880366.0U
Authority: CN
Inventors: 许弼华
Original assignee: Dongguan Hongming Ventilation Equipment Co ltd
Current assignee: Dongguan Hongming Ventilation Equipment Co ltd
Priority date: 2019-06-12
Filing date: 2019-06-12
Publication date: 2020-06-05
Anticipated expiration: 2029-06-12

Abstract

The utility model discloses a hush air tunnel fan, which comprises a fan shell and a motor component; the fan shell comprises a front section shell, a middle section shell and a rear section shell which are arranged in sequence; the motor component comprises a silencing fairing and a motor; the silencing cowlings are symmetrically arranged in the front section shell and the rear section shell; the motor is arranged in the middle section shell, the front output end of the motor is connected with an impeller, the rear output end of the motor is connected with a cooling centrifugal wind wheel, and the outer side of the motor is provided with a motor shell; the left side and the right side of the motor shell are provided with heat dissipation air inlets, and the rear side of the motor shell is provided with heat dissipation air outlets; also comprises a silencing cover; the silencing cover comprises a mesh plate and soundproof cotton; the utility model discloses a noise and resonance that produce when amortization radome fairing reduces the air current and gets into the anterior segment casing to absorb the noise in the casing through the amortization cover, dispel the heat through cooling off centrifugal wind wheel to the fan, it is little to have the noise, advantage that heat dispersion is good.

Description

Amortization type tunnel fan

Technical Field

The utility model relates to a fan technical field, in particular to amortization type tunnel fan.

Background

The tunnel ventilator is mainly used for discharging harmful gas in tunnel construction, and is an important condition for providing a good construction environment for tunnel construction, maintaining the health of operators, ensuring normal and smooth construction, improving the working efficiency and ensuring the engineering quality due to explosive explosion, use of an internal combustion engine and release of harmful gas in a ground layer during excavation. On one hand, in the existing tunnel fan, when the blades rotate in the operation process, wind can walk from the front end to the rear end of the fan, the wind can generate vortex and turbulent flow, the load of the blades can be increased when the vortex enters the blades, and the friction between air and the blades causes noise and even generates fan resonance, the noise can influence the hearing of constructors in a closed tunnel, the service life of the fan can be shortened due to the fan resonance, and the efficiency of the fan can be reduced and the noise can be caused due to the vortex phenomenon on the reverse side of the blades; on the other hand, because the tunnel fan is installed in the tunnel to need long-time work, the fan lasts the operation and can produce high temperature, but the motor in the tunnel fan need install in motor housing in order to prevent that the dust from getting into, and carries out the air-cooling radiating efficiency low through motor housing. Therefore, improvements are needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a amortization type tunnel fan to solve above-mentioned problem.

The utility model discloses a following technical scheme realizes above-mentioned purpose:

a hush air tunnel fan comprises a fan shell and a motor assembly; the fan shell comprises a front section shell, a middle section shell and a rear section shell which are arranged in sequence; the front section shell and the rear section shell are symmetrically arranged; a fixed frame is arranged on the upper side of the middle section shell; the motor component comprises a silencing fairing and a motor; the silencing cowlings are symmetrically arranged in the front section shell and the rear section shell; the motor is arranged in the middle section shell, the front output end of the motor is connected with an impeller, the rear output end of the motor is connected with a cooling centrifugal wind wheel, and a motor shell is arranged on the outer side of the motor; the left side and the right side of the motor shell are provided with heat dissipation air inlets, and the rear side of the motor shell is provided with a heat dissipation air outlet; also comprises a silencing cover; the silencing cover comprises a mesh plate and soundproof cotton; the mesh plate is arranged on the inner side surfaces of the front section shell and the rear section shell; the soundproof cotton is arranged in the mesh plate.

Furthermore, the front end of the silencing fairing is a cone, and the rear end of the silencing fairing is a cylinder, so that noise and resonance generated when airflow enters the front section shell are reduced.

Furthermore, the silencing fairing and the motor are arranged in the shell through a plurality of flow guide connecting sheets; the flow guide connecting pieces are uniformly distributed among the fairing, the motor and the shell.

Further, the front section shell and the rear section shell are fixedly connected with the middle section shell through flanges; the flange is arranged on the rear side of the silencing cover.

Further, the impeller comprises a hub and blades; the hub is arranged at the front output end of the motor; the blades are welded to the outside of the hub.

Furthermore, the heat dissipation air inlet is provided with a primary filter.

The utility model has the advantages that 1, the noise is low; the silencing cowlings are symmetrically arranged on the front section shell and the rear section shell, the front end of each silencing cowling is a cone, the rear end of each silencing cowling is a cylinder, noise and resonance generated when airflow enters the front section shell can be reduced, the silencing cowlings and the motor are connected with the shells through the flow guide connecting pieces, the flow guide connecting pieces are arranged in a front-back alignment mode, the wind sucked into the front section shell can be divided into a plurality of air channels, a large amount of wind is prevented from colliding with blades from the same air channel to form turbulent flow, resonance influence on equipment stability is caused, the silencing cowlings are further arranged, noise generated when the motor runs can be effectively absorbed by soundproof cotton, and hearing of constructors is prevented from being influenced by excessive noise in a tunnel; 2. the heat dissipation performance is good; through having set up cooling centrifugal wind wheel behind the motor output, when the impeller operation carries out convulsions, cooling centrifugal wind wheel synchronous operation in the motor housing to the heat dissipation of blowing is carried out for the motor in the motor housing, and has set up the primary filter, can block in the dust enters into the motor, than in the past use motor housing heat conduction forced air cooling, has the better advantage of heat dispersion.

Drawings

FIG. 1 is a schematic view of the whole structure of the present invention in half section;

fig. 2 is a schematic view of a partially enlarged structure at B of the present invention;

fig. 3 is a front view of the present invention.

10. A fan housing; 11. a front section housing; 12. a middle section shell; 13. a rear section housing; 14. a fixed frame; 15. a flange; 16. a diversion connecting sheet; 20. a motor assembly; 210. a sound-deadening cowling; 211. a vertebral body; 212. a cylinder; 220. a motor; 221. a hub; 222. a blade; 223. cooling the centrifugal wind wheel; 224. a motor housing; 225. a heat dissipation air inlet; 226. a heat dissipation air outlet; 30. a silencing cover.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. It should be noted that the drawings of the present invention are simplified and use non-precise ratios, and are only used for the purpose of facilitating and clearly assisting the description of the embodiments of the present invention.

As shown in fig. 1 to 3, a silencing type tunnel fan includes a fan housing 10, a motor assembly 20;

the fan shell 10 comprises a front shell 11, a middle shell 12 and a rear shell 13 which are arranged in sequence; the front section shell 11 and the rear section shell 13 are symmetrically arranged; a fixed frame 14 is arranged on the upper side of the middle section shell 12; the silencing type tunnel fan is arranged on the top layer of the tunnel through the fixed frame 14; the front section shell 11 and the rear section shell 13 are fixedly connected with the middle section shell 12 through flanges 15; the flange 15 is arranged at the rear side of the silencing cover 30;

the motor assembly 20 comprises a silencing fairing 210 and a motor 220; the silencing cowling 210 is symmetrically arranged in the front section shell 11 and the rear section shell 13, the front end of the silencing cowling is a cone 211, and the rear end of the silencing cowling is a cylinder 212, so that noise and resonance generated when airflow enters the front section shell 11 are reduced; the motor 220 is arranged in the middle section shell 12, the front output end of the motor is connected with an impeller, the rear output end of the motor is connected with a cooling centrifugal wind wheel 223, and the outer side of the motor is provided with a motor shell 224; the impeller comprises a hub 221 and blades 222; the hub 221 is arranged at the front output end of the motor 220; the blades 222 are welded to the outside of the hub 221; a heat dissipation air inlet 225 is arranged on the left side and the right side of the motor shell 224, and a heat dissipation air outlet 226 is arranged on the rear side; the heat dissipation air inlet 225 is provided with a primary filter; the cooling centrifugal wind wheel 223 in the motor shell 224 synchronously runs while the impeller runs to draw air, and blows air to the motor 220 in the motor shell 224 to dissipate heat, and a primary filter is arranged to prevent dust from entering the motor 220; the silencing fairing 210 and the motor 220 are arranged in the shell through a plurality of flow guide connecting pieces 16; the flow guide connecting pieces 16 are uniformly distributed among the fairing, the motor 220 and the shell; the flow guide connecting pieces 16 on the silencing fairing 210 and the motor 220 are arranged in a front-back alignment manner, so that the wind pumped into the front section shell 11 can be divided into a plurality of wind channels, and a large amount of wind is prevented from impacting the blades 222 from the same wind channel to form turbulent flow, so that the resonance influences the stability of equipment;

also comprises a silencing cover 30; the silencing cover 30 comprises a mesh plate and soundproof cotton; the mesh plate is arranged on the inner side surfaces of the front section shell 11 and the rear section shell 13; the soundproof cotton is arranged in the mesh plate; the soundproof cotton can effectively absorb the noise when motor 220 operates, avoids too big noise to influence constructor's hearing in the tunnel.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a amortization type tunnel fan which characterized in that: comprises a fan shell and a motor component; the fan shell comprises a front section shell, a middle section shell and a rear section shell which are arranged in sequence; the front section shell and the rear section shell are symmetrically arranged; a fixed frame is arranged on the upper side of the middle section shell; the motor component comprises a silencing fairing and a motor; the silencing cowlings are symmetrically arranged in the front section shell and the rear section shell; the motor is arranged in the middle section shell, the front output end of the motor is connected with an impeller, the rear output end of the motor is connected with a cooling centrifugal wind wheel, and a motor shell is arranged on the outer side of the motor; the left side and the right side of the motor shell are provided with heat dissipation air inlets, and the rear side of the motor shell is provided with a heat dissipation air outlet; also comprises a silencing cover; the silencing cover comprises a mesh plate and soundproof cotton; the mesh plate is arranged on the inner side surfaces of the front section shell and the rear section shell; the soundproof cotton is arranged in the mesh plate.

2. The muffling tunnel blower according to claim 1, wherein: the front end of the silencing fairing is a cone, and the rear end of the silencing fairing is a cylinder, so that noise and resonance generated when airflow enters the front section shell are reduced.

3. The muffling tunnel blower according to claim 1, wherein: the silencing fairing and the motor are arranged in the shell through a plurality of flow guide connecting sheets; the flow guide connecting pieces are uniformly distributed among the fairing, the motor and the shell.

4. The muffling tunnel blower according to claim 1, wherein: the front section shell and the rear section shell are fixedly connected with the middle section shell through flanges; the flange is arranged on the rear side of the silencing cover.

5. The muffling tunnel blower according to claim 1, wherein: the impeller comprises a hub and blades; the hub is arranged at the front output end of the motor; the blades are welded to the outside of the hub.

6. The muffling tunnel blower according to claim 1, wherein: and the heat dissipation air inlet is provided with a primary filter.