CN216922650U

CN216922650U - Tunnel bidirectional jet fan

Info

Publication number: CN216922650U
Application number: CN202220375473.XU
Authority: CN
Inventors: 梁帆; 赵亨幸; 徐建标; 成吉; 倪燕琴
Original assignee: Shaoxing Shangyu Yingda Fan Co ltd
Current assignee: Shaoxing Shangyu Yingda Fan Co ltd
Priority date: 2022-02-24
Filing date: 2022-02-24
Publication date: 2022-07-08
Anticipated expiration: 2032-02-24

Abstract

The utility model discloses a tunnel bidirectional jet fan which comprises a cylindrical fan base and cylindrical silencers arranged at the front end and the rear end of the cylindrical fan base, wherein a motor base is arranged in the cylindrical fan base, a motor is arranged on the motor base, an impeller is arranged on an output shaft of the motor, a fairing is arranged on an outer cover of the motor and is of a half-olive shape with an open large end, the large end of the fairing is positioned at a shaft extension end of the motor, the small end of the fairing is positioned at a non-shaft extension end of the motor, a drainage tube is arranged on the fairing, and the drainage tube communicates the fairing with the outside of the cylindrical fan base. The utility model provides a tunnel bidirectional jet fan which can reduce resistance, rectify passing air flow and improve air exhaust effect.

Description

Tunnel bidirectional jet fan

Technical Field

The utility model relates to a tunnel bidirectional jet fan, and belongs to the technical field of fans.

Background

A jet fan of a tunnel is used for daily ventilation of the tunnel, bidirectional air exhaust is generally realized by adopting the bidirectional jet fan in the tunnel at present, an impeller blade of the jet fan is generally made into a structural form with positive and negative complete symmetry, the air exhaust direction is switched by electronically or mechanically switching the rotation direction of a motor, the windward side of the jet fan is also switched between the impeller of the fan and a non-shaft-extension end of the motor, the section of the non-shaft-extension end of the motor is irregular, and the influence on the air flow of the fan is great.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a tunnel bidirectional jet fan, which can ensure smooth air flow when a motor is used as a windward side and can solve the defects of the prior art.

The technical scheme of the utility model is as follows: the utility model provides a two-way efflux fan in tunnel, includes cylindric fan seat, installs the cylindric silencer at cylindric fan seat front and back end, is provided with the motor cabinet in the cylindric fan seat, installs the motor on the motor cabinet, is provided with the impeller on the motor output shaft, the motor dustcoat is equipped with the radome fairing, the radome fairing is half olive type, and its main aspects is located the motor shaft and stretches the end, and the tip is located the non-shaft of motor and stretches the end, be provided with the drainage tube on the radome fairing, the drainage tube communicates radome fairing and cylindric fan seat outside.

Further cylindric silencer and cylindric fan seat flange joint, the cylindric silencer includes that flange inside flanging's barrel is established to one end, and the barrel inboard is provided with the refractory glass cotton, and the cotton inboard of refractory glass is provided with the perforated plate, and the barrel other end is provided with solid fixed ring.

Further, the fixing ring is in an outward-expanding bell mouth shape.

And further, a protective cover is arranged at the end of the cylindrical silencer provided with the fixing ring.

According to the utility model, when the motor rotates forwards, air enters from the impeller end, the impeller is a windward side, when the motor rotates backwards, the air enters from the direction of the non-axial extension end of the motor, the fairing is arranged on the motor and is in a half-olive shape, the small end of the fairing is positioned in the direction of the non-axial extension end of the motor, when the motor rotates backwards, the windward side is formed, resistance can be reduced, passing airflow can be rectified, the exhaust effect is improved, the motor is isolated from the conveyed airflow by the fairing, negative pressure can be formed in the fairing when the airflow passes through, the fairing is communicated with the outside of the cylindrical fan base through the drainage tube, so that external air enters the fairing through the drainage tube to cool the motor, and the influence on operation caused by overhigh temperature of the motor is prevented.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a cylindrical blower mount;

fig. 3 is an exploded schematic view of the cylindrical muffler.

Shown in the figure: a cylindrical fan base 1;

cylindrical mufflers

2, 2A; a motor base 3; a cowl 4; a motor 5; an impeller 6; a drainage tube 7; a flange flanging 8; a flange inner flanging 9; a cylinder 10; refractory glass wool 11; a perforated plate 12; a fixed ring 13; a shield 14.

Detailed Description

The embodiment of the utility model comprises the following steps: as shown in fig. 1 to 3, a tunnel bidirectional jet fan comprises a cylindrical fan base 1,

cylindrical silencers

2 and 2A installed at the front end and the rear end of the cylindrical fan base 1, a motor base 3 is installed in the cylindrical fan base 1, a fairing 4 is installed on the motor base 3, a motor 5 is installed in the fairing 4, an impeller 6 is installed on a motor output shaft, the fairing 4 is in a half-olive shape, the large end of the fairing is located at the motor axial extension end, the small end of the fairing is located at the motor non-axial extension end, a draft tube 7 is installed on the fairing 4, the other draft tube 7 is located outside the cylindrical fan base 1, the fairing 4 is communicated with the outside of the cylindrical fan base 1, the

cylindrical silencers

2 and 2A muffle the air flow in and out, when the motor 5 rotates forwards, air enters from the impeller 6 end, the impeller 6 is a windward side, when the motor 5 rotates backwards, air enters from the direction of the non-axial extension end of the motor, the fairing 4 is installed on the motor 5, the radome fairing 4 is half olive type, its tip is located the non-axle of motor and stretches the end direction, be the windward side when motor 5 reversal, can reduce the resistance and carry out the rectification to the air current of process, promote the effect of airing exhaust, radome fairing 4 keeps apart motor 5 and the air current of carrying, probably form the negative pressure in radome fairing 4 when the air current passes through, communicate radome fairing 4 and cylindric fan seat 1 outward through drainage tube 7, make the outside gas get into the cooling to motor 5 in the radome fairing 4 through drainage tube 7, prevent that motor 5 high temperature from influencing the operation.

Preferably, 1 both ends of cylindric fan seat all are equipped with flange flanging 8,

cylindric silencer

2, 2A includes that one end is managed to manage the barrel 10 of blue inside flanging 9, barrel 10 inboard is provided with the cotton 11 of fire-resistant glass, the cotton 11 inboard of fire-resistant glass is provided with perforated plate 12, play fire-retardant effect of making an uproar that falls, the barrel 10 other end is provided with solid fixed ring 13, flange flanging 9 and the flange flanging 8 cooperation back flange joint of cylindric fan seat 1 of barrel 10, flange flanging 9 of barrel 10 is spacing to fire-resistant glass cotton 11 and perforated plate 12 one end, fire-resistant glass cotton 11 is spacing through solid fixed ring 13 with the perforated plate 12 other end, easy to assemble.

Preferably, the fixing ring 13 is flared. The flow collecting function is achieved, so that the airflow is accelerated to establish a uniform speed field and a uniform pressure field, the flow loss is reduced, and the efficiency is improved.

Preferably, the

cylindrical muffler

2, 2A is provided with a protective cover 14 at the end of the fixing ring 13, and the protective cover 14 is connected to the fixing ring 13 to prevent large particles from entering and damaging the motor 5 or the impeller 6.

Claims

1. The utility model provides a two-way efflux fan in tunnel, includes cylindric fan seat, installs the cylindric silencer at cylindric fan seat front and back end, is provided with the motor cabinet in the cylindric fan seat, installs the motor on the motor cabinet, is provided with impeller, its characterized in that on the motor output shaft: the motor outer cover is provided with a fairing, the fairing is in a half-olive shape, the large end of the fairing is located at the shaft extension end of the motor, the small end of the fairing is located at the non-shaft extension end of the motor, the fairing is provided with a drainage tube, and the drainage tube communicates the fairing with the outside of the cylindrical fan seat.

2. The tunnel bidirectional jet fan of claim 1, wherein: the cylindric silencer and cylindric fan seat flange joint, the cylindric silencer includes that flange turn-ups's barrel in one end is established, and the barrel inboard is provided with the refractory glass cotton, and the cotton inboard of refractory glass is provided with the perforated plate, and the barrel other end is provided with solid fixed ring.

3. The tunnel bidirectional jet fan of claim 2, wherein: the fixed ring is in an outward-expanding horn mouth shape.

4. The tunnel bidirectional jet fan of claim 2 or 3, wherein: the cylindrical silencer is provided with a protective cover at the end of the fixing ring.