CN218030697U

CN218030697U - External flue draught fan

Info

Publication number: CN218030697U
Application number: CN202221938082.0U
Authority: CN
Inventors: 邱树印
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-07-26
Filing date: 2022-07-26
Publication date: 2022-12-13
Anticipated expiration: 2032-07-26

Abstract

The utility model relates to an induced draft fan, especially an external flue induced draft fan. It includes the draught fan, the draught fan is by motor drive, draught fan detachable installs in the flue outside, be provided with in the flue the pipe with draught fan sealing connection, through following the high-speed air that flows in the pipe drives air is upwards discharged in the flue. It has the advantages that: the induced draft fan is arranged externally, so that the induced draft fan is not influenced by high-temperature gas in the flue, the requirement on production materials is reduced, the cost is reduced, and the service life is prolonged; the induced draft fan is not polluted by air in a flue in the using process, so that the induced draft fan is fully covered with stains, and the working effect is influenced; the draught fan is detachably mounted, and is convenient to clean, overhaul and replace.

Description

External flue draught fan

Technical Field

The utility model relates to an induced draft fan, especially an external flue induced draft fan.

Background

Induced draft fans are widely used for ventilation, dust exhaust and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilating and air inducing of boilers and industrial kilns; cooling and ventilation in air conditioning equipment and household appliances; drying and selecting grains; wind tunnel wind source and air cushion boat inflation and propulsion.

The common induced draft fan is arranged at the outlet of the flue and discharges the air in the pipeline out of the pipeline, the induced draft fan has higher material and production requirements due to the influence of high-temperature air in the pipeline, so that the cost is increased, and the service life of the induced draft fan is influenced by the long-time contact of the induced draft fan with the high-temperature air; the air in the flue contains a large amount of greasy dirt dust which is accumulated on the induced draft fan for a long time, so that the working effect of the induced draft fan is influenced, and even the induced draft fan can be damaged; the flue outlet is generally arranged at the place which is inconvenient to touch by people, and the position where the induced draft fan is installed is not easy to overhaul and replace, so that once the induced draft fan breaks down, the induced draft fan is troublesome to maintain or replace, wastes time and labor.

SUMMERY OF THE UTILITY MODEL

The utility model provides an external flue draught fan to not enough among the prior art, it has overcome foretell drawback, and the technical scheme of its adoption is as follows:

the utility model provides an external flue draught fan, includes the draught fan, the draught fan is by motor drive, draught fan detachable installs in the flue outside, be provided with in the flue pipe with draught fan sealing connection, through following the high-speed air that flows out in the pipe drives air is upwards discharged in the flue.

Preferably, the induced draft fan is a turbofan or an exhaust fan.

Preferably, the air outlet of the induced draft fan is detachably connected with the air inlet of the guide pipe through a connector.

Preferably, the air outlet of the induced draft fan is sleeved or inserted at the air inlet of the guide pipe.

Preferably, the guide pipe is connected with the flue in a sealing manner through a sealing ring.

Preferably, the air outlet of the guide pipe is smaller than the air inlet.

Preferably, the flue outside is provided with mounting platform, the draught fan is installed mounting platform is last.

Preferably, an expansion pipe is further arranged at one end of the air outlet of the guide pipe, and a plurality of air outlets are uniformly formed in the expansion pipe.

The utility model discloses an external flue draught fan, draught fan detachable installs in the flue outside, be provided with in the flue pipe with draught fan sealing connection, through following the high-speed air that flows out in the pipe drives air is upwards discharged in the flue, the air outlet of draught fan with the air intake of pipe passes through connector detachable and connects, the pipe air outlet is less than the air intake.

Compared with the prior art, the beneficial effects of the utility model reside in that: the induced draft fan is arranged externally, so that the induced draft fan is not influenced by high-temperature gas in the flue, the requirement on production materials is reduced, the cost is reduced, and the service life is prolonged; the induced draft fan is not polluted by air in the flue in the using process, so that the induced draft fan is bestrewed with stains, and the working effect is influenced; the draught fan is detachably mounted, so that the draught fan is convenient to clean, overhaul and replace; still be provided with and expand the pipe for air flow is more even in the flue, and smoke exhaust effect is better.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will discuss the drawings required to be used in the description of the embodiments or the prior art, it is obvious that the technical solutions described in conjunction with the drawings are only some embodiments of the present invention, and for those skilled in the art, other embodiments and drawings thereof can be obtained according to the embodiments shown in the drawings without creative efforts.

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a top view of the present invention.

Fig. 3 isbase:Sub>A cross-sectional view atbase:Sub>A-base:Sub>A of fig. 2.

Fig. 4 is a schematic view of the expanded pipe connection of the present invention.

In the figure: 1. turbofan, 2, motor, 3, sealing washer, 4, pipe, 5, flue, 6, expansion pipe.

Detailed Description

The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments described in the present disclosure, all other embodiments obtained by a person skilled in the art without creative efforts are within the scope of the present disclosure.

As shown in fig. 1-4, the embodiment of the utility model provides an external flue draught fan, including the draught fan, the draught fan is turbofan 1, turbofan 1 is driven by motor 2, turbofan 1 detachable installs in the flue 5 outside, be provided with in the flue 5 pipe 4 with turbofan 1 sealing connection, the pipe 4 air outlet is less than the air intake, turbofan 1's air outlet cup joints the air intake of pipe 4, pipe 4 with through sealing washer 3 sealing connection between flue 5, pipe 4 air outlet one end still is provided with extends pipe 6, evenly be provided with a plurality of air outlet on extending pipe 6, through following the high-speed air that flows out in extending pipe 6 drives air upwards discharges in the flue 5.

During operation, motor 2 drive turbofan 1 rotates, and the air flows in from turbofan 1's air intake, and back is with higher speed through turbofan 1, gets into pipe 4 through turbofan 1's air outlet, and the pipe 4 air outlet is less than the air inlet, can make the air of flowing through accelerate once more to obtain high velocity air at the pipe 4 air outlet, high velocity air flows out through the air outlet of expanding pipe 6, drives the even upflow of air in the flue and discharges.

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 is indicated by the appended claims, rather than the foregoing description, and all changes that 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.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides an external flue draught fan, includes the draught fan, the draught fan is driven by motor (2), its characterized in that: draught fan detachable installs in flue (5) the outside, be provided with in flue (5) pipe (4) with draught fan sealing connection, through following the high-speed air that flows out in pipe (4) drives air is upwards discharged in flue (5).

2. The external flue draught fan of claim 1, wherein: the induced draft fan is a turbofan (1) or an exhaust fan.

3. The external flue draught fan of claim 2, wherein: the air outlet of the draught fan is detachably connected with the air inlet of the guide pipe (4) through a connector.

4. The external flue induced draft fan of claim 2, wherein: and the air outlet of the draught fan is sleeved or inserted at the air inlet of the guide pipe (4).

5. An external flue induced draft fan according to claim 3 or 4, wherein: the guide pipe (4) is connected with the flue (5) in a sealing mode through a sealing ring (3).

6. The external flue draught fan of claim 5, wherein: the air outlet of the guide pipe (4) is smaller than the air inlet.

7. The external flue draught fan of claim 1, wherein: the outer side of the flue (5) is provided with a mounting platform, and the induced draft fan is mounted on the mounting platform.

8. The external flue induced draft fan of claim 1, wherein: an expansion pipe (6) is further arranged at one end of the air outlet of the guide pipe (4), and a plurality of air outlets are uniformly formed in the expansion pipe (6).