CN219432109U - Mixed flow fan applied to fire control - Google Patents

Abstract

The utility model belongs to the technical field of mixed flow fans, and particularly relates to a mixed flow fan applied to fire protection. The mixed flow fan is relatively high in smoke discharging efficiency and applied to fire protection. The utility model provides a be applied to mixed flow fan of fire control, includes dryer, casing, guide vane, impeller and drainage cover etc. the casing with evenly spaced along circumference between the dryer inner wall is equipped with the guide vane that is used for interfering the trend of wind, the output shaft tip cover of fan is equipped with the impeller, the air intake department of dryer installs the drainage cover that is used for carrying out the water conservancy diversion to the wind. The smoke discharging or ventilating operation can be flexibly switched according to actual use conditions, the smoke discharging or ventilating operation is suitable for being used in rescue in a fire scene, and adverse effects on rescue work caused by poor ventilation or smoke diffusion in local areas can be avoided; and through the guide vane that is provided with arc structure, be favorable to carding and converting the rotatory air current behind the impeller, can strengthen the velocity of flow of air current, and then be favorable to improving the efficiency of discharging fume.

Description

Mixed flow fan applied to fire control

Technical Field

The utility model belongs to the technical field of mixed flow fans, and particularly relates to a mixed flow fan applied to fire protection.

Background

When a fire disaster occurs in a factory building or a building, because smoke in the fire scene is diffused, visibility is poor, rescue work of rescue workers is easily affected, a certain potential safety hazard exists, ventilation operation is needed on the scene sometimes, in order to improve rescue efficiency, smoke in the scene is needed to be discharged, but partial areas are sometimes unsmooth in smoke discharging, and a fan is needed to be carried to assist in smoke discharging.

However, the existing portable smoke exhaust fan is basically not provided with a guide vane, so that the rotating airflow passing through the blades is disturbed, the flow speed is relatively low, the smoke exhaust efficiency is relatively low, and the smoke exhaust fan is not beneficial to emergency rescue in a fire scene.

Therefore, there is a need to improve the shortcomings of the prior art and provide a mixed flow fan with relatively high smoke discharging efficiency for fire protection.

Disclosure of Invention

The utility model aims to overcome the defect that the existing smoke exhaust fan is not provided with a guide vane generally, so that the smoke exhaust efficiency is relatively low.

In order to solve the technical problems, the utility model provides the mixed flow fan applied to fire protection, which comprises an air duct, a supporting seat, a fan, a threading groove, a machine shell and a handle, wherein the supporting seat is arranged at the bottom of the air duct, the machine shell is arranged inside the air duct, the machine shell is connected with the threading groove and communicated, the threading groove penetrates out of the side wall of the air duct outwards, the fan is arranged inside the machine shell, the handle is arranged at the upper part of the air duct, the mixed flow fan further comprises a guide vane, an impeller and a guide cover, the guide vane for disturbing the trend of wind is uniformly arranged between the machine shell and the inner wall of the air duct at intervals along the circumferential direction, the impeller is sleeved at the end part of an output shaft of the fan, and the guide cover for guiding the wind is arranged at the air inlet of the air duct.

Furthermore, the drainage cover is in a horn mouth shape.

Further, the guide vane is arranged in an arc shape.

Still further, still include the bulge loop, the air outlet end of dryer is provided with the bulge loop.

Furthermore, the air inlet end of the drainage cover is provided with a protective cover.

Still further, still include the cushion, the landing leg of supporting seat is equipped with the cushion on the cover.

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

the device has a small structure, is convenient to use, can flexibly switch the operation of smoke discharge or ventilation according to actual use conditions, is suitable for rescue in a fire scene, and can avoid bad ventilation or smoke diffusion in local areas to cause adverse effects on rescue work; and through the guide vane that is provided with arc structure, be favorable to carding and converting the rotatory air current behind the impeller, can strengthen the velocity of flow of air current, and then be favorable to improving the efficiency of discharging fume.

Drawings

Fig. 1 is a perspective view of a first perspective view of the present utility model.

Fig. 2 is a schematic perspective view of a second perspective view of the present utility model.

Fig. 3 is a partial cross-sectional view of the present utility model.

Fig. 4 is an exploded view of the present utility model.

The marks in the drawings are: the novel air conditioner comprises a 1-air duct, a 2-supporting seat, a 3-fan, a 30-wire penetrating groove, a 4-casing, a 5-deflector, a 6-impeller, a 7-drainage cover, an 8-protective cover, a 9-handle, a 10-convex ring and a 20-cushion block.

Detailed Description

The utility model is further described below with reference to the drawings and examples.

The utility model provides a mixed flow fan applied to fire protection, as shown in fig. 1-4, the mixed flow fan comprises an air duct 1, a supporting seat 2, a fan 3, a threading groove 30, a shell 4, a guide vane 5, an impeller 6, a drainage cover 7 and a lifting handle 9, wherein the supporting seat 2 is arranged at the bottom of the air duct 1 through bolts, the shell 4 is internally provided with the shell 4, the shell 4 is connected with the threading groove 30 and communicated, the threading groove 30 penetrates out of the side wall of the air duct 1, the guide vane 5 is arranged between the shell 4 and the inner wall of the air duct 1 at uniform intervals along the circumferential direction, the guide vane 5 is utilized to facilitate accelerating the flow speed of air flow, so as to facilitate improving the smoke discharging efficiency, the fan 3 is internally arranged in the shell 4, the threading groove 30 is used for penetrating out of a power line on the fan 3, the impeller 6 is sleeved at the end part of an output shaft of the fan 3, the drainage cover 7 is arranged at the position of the air duct 1, the drainage cover 7 is in a horn mouth shape, so that the extracted smoke is convenient to flow guide, the extracted smoke can be accelerated, the speed of the smoke can be increased, the efficiency of the smoke can be conveniently extracted, and the portable device is convenient to carry about 1, and the lifting handle is convenient to move.

Further, as shown in fig. 2-4, the shape of the flow guiding sheet 5 is arc-shaped, which is beneficial to guiding the flowing smoke and achieves the purpose of accelerating the smoke flow rate.

Further, as shown in fig. 1-3, the air outlet of the air duct 1 is provided with a convex ring 10, which is favorable for being firmly sleeved at the end part of the air duct 1 through a hose.

Further, as shown in fig. 1 and 4, the air inlet end of the drainage cover 7 is provided with a protective cover 8, and the protective cover 8 can effectively filter larger impurities and avoid damaging the impeller 6.

Further, as shown in fig. 4, the support seat further comprises a cushion block 20, the support leg of the support seat 2 is sleeved with the cushion block 20, and the cushion block 20 is a rubber sleeve, so that the stability of the device in placement is improved.

Working principle: when smoke discharging operation is required to be carried out on a fire scene, the device can be placed at a corresponding position, one end of a ventilation hose can be fixed at an outdoor ventilation position, the other end of the ventilation hose is sleeved at an air outlet of the air duct 1, the ventilation hose is stably installed through the limiting function of the convex ring 10, the fan 3 is started, smoke on the fire scene can be rapidly discharged through the ventilation hose, and the ventilation hose is provided with the dredging function of the arc-shaped structure guide vane 5, so that the device is beneficial to carding and converting the rotating airflow after passing through the impeller 6, the purpose of increasing airflow velocity is achieved, the smoke discharging efficiency can be further improved, and meanwhile turbulence, noise and vibration can be reduced; when the ventilation operation is needed, the device can be placed at an outdoor ventilation position, one end of a sleeved ventilation hose is fixed at a place needing ventilation, and the fan 3 is started, so that the ventilation operation can be carried out on the place, the device can be flexibly switched according to the actual use condition of a fire scene, the purpose of convenient use is achieved, rescue workers are assisted to rescue, and the device has strong practicability.

The foregoing examples have shown only the preferred embodiments of the utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that modifications, improvements and substitutions can be made by those skilled in the art without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (6)

1. Be applied to mixed flow fan of fire control, including dryer (1), supporting seat (2), fan (3), threading groove (30), casing (4) and handle (9), supporting seat (2) are installed to dryer (1) bottom, inside casing (4) that are equipped with of dryer (1), be connected with threading groove (30) and intercommunication on casing (4), just threading groove (30) outwards wear out the lateral wall of dryer (1), casing (4) internally mounted has fan (3), dryer (1) upper portion is provided with handle (9), its characterized in that still including guide vane (5), impeller (6) and drainage cover (7), casing (4) with evenly spaced along circumference between the dryer (1) inner wall is equipped with guide vane (5) that are used for disturbing the trend of wind, impeller (6) are equipped with to the output shaft tip cover of fan (3), the air intake department of dryer (1) installs and is used for carrying out guide cover (7) to the wind.

2. The mixed flow fan applied to fire protection according to claim 1, wherein the flow guiding cover (7) is in a horn mouth shape.

3. Mixed flow fan for fire protection according to claim 1, characterized in that the shape of the deflector (5) is an arc-shaped arrangement.

4. The mixed flow fan for fire protection according to claim 1, further comprising a convex ring (10), wherein the convex ring (10) is arranged at the air outlet end of the air duct (1).

5. The mixed flow fan applied to fire protection according to claim 1, further comprising a protective cover (8), wherein the protective cover (8) is installed at the air inlet end of the drainage cover (7).

6. The mixed flow fan for fire protection according to claim 1, further comprising a cushion block (20), wherein the support leg of the support seat (2) is sleeved with the cushion block (20).