Exhaust fan with multiple air pipes

Abstract

The utility model relates to an exhaust fan with multiple air pipes. The exhaust fan with the multiple air pipes comprises a machine frame, a plurality of fan sets, a plurality of air guide pipes and an air outlet pipe. The plurality of fan units are arranged and mounted on the rack; the multiple air guide pipes and the multiple fan sets are arranged in a one-to-one correspondence mode, one ends of the air guide pipes are connected with the fan sets, and the other ends of the multiple air guide pipes are communicated with one another to form a gathering opening. One end of the air outlet pipe is communicated with the converging opening; according to the multi-air-pipe exhaust fan, high-pressure airflow generated by the multiple fan sets can be gathered to the air outlet pipe through the multiple air guide pipes, then the air outlet pipe can exhaust airflow with larger air force, the axial air force of the multi-air-pipe exhaust fan is improved, and the conduction effect on the airflow of a tunnel is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a multi-duct exhaust fan. Background Art

[0002] Tunnel structures such as traffic tunnels, hydraulic tunnels, and military tunnels are relatively long, and exhaust fans need to be installed in the front, middle, and rear of the tunnel to ensure air circulation in the tunnel. Existing exhaust fans used in tunnels are generally single fans with single air ducts. This method results in insufficient wind power for the exhaust fan, which is not conducive to the rapid circulation of air in the tunnel. Utility Model Content

[0003] In view of this, the utility model provides a multi-duct exhaust fan, which is used to solve one of the problems in the prior art that the exhaust fan has insufficient wind power resulting in slow air flow.

[0004] In order to achieve one, part or all of the above purposes or other purposes, the utility model proposes:

[0005] A multi-duct exhaust fan, comprising: a frame, a plurality of fan units, a plurality of air guide ducts and an air outlet duct;

[0006] A plurality of the fan units are arranged and installed on the rack;

[0007] The plurality of air guide ducts and the plurality of fan groups are arranged in one-to-one correspondence, one end of the air guide duct is connected to the fan group, and the other ends of the plurality of air guide ducts are connected to each other to form a convergence port;

[0008] One end of the air outlet pipe is connected to the converging port.

[0009] Furthermore, the rack is provided with a plurality of mounting plates corresponding to a plurality of fan units; the fan unit comprises a chassis and a turbine fan;

[0010] The chassis is fixed on the mounting plate, a front baffle is provided at the front end of the chassis, an air outlet is provided on the front baffle, one end of the air duct is connected to the front baffle and connected to the air outlet; an air inlet is also provided on the chassis; the turbine fan is installed in the chassis.

[0011] Furthermore, the mounting plate is provided with two connecting rails, and the bottom of the chassis is provided with two connecting convex strips; the two connecting convex strips are correspondingly installed on the two connecting rails;

[0012] A fixed limit block is provided at one end of the connecting guide rail, and a limit latch is provided at the other end of the connecting guide rail; the sliding of the chassis on the connecting guide rail is limited by the fixed limit block and the limit latch.

[0013] Furthermore, it also includes multiple sets of locking bolts and nuts. An annular connecting plate is provided on one end of the air duct, and the annular connecting plate is attached to the front baffle of the chassis. Both the annular connecting plate and the front baffle are provided with multiple through holes, and the locking bolts pass through the through holes and are threadedly connected to the nuts.

[0014] Furthermore, a frustum ring is provided at the front end of the chassis, the front baffle is mounted on the frustum ring, and the air inlets are distributed on the side walls of the frustum ring.

[0015] Furthermore, two turbo blowers are provided, and each turbo blower has a plurality of air blowing nozzles, and the plurality of air blowing nozzles are all connected to the air outlet.

[0016] Furthermore, there are three air ducts, the middle air duct is coaxially connected to the air outlet duct, the air ducts on both sides are L-shaped tubes, and the ends of the air ducts on both sides are connected to the side wall of the middle air duct.

[0017] Implementing the embodiments of the present utility model will have the following beneficial effects:

[0018] The multi-duct exhaust fan includes a frame, multiple fan units, multiple air ducts and air outlet ducts; the multiple fan units are arranged and installed on the frame; the multiple air ducts and the multiple fan units are arranged in a one-to-one correspondence, one end of the air duct is connected to the ventilation unit, and the other ends of the multiple air ducts are interconnected to form a convergence port; one end of the air outlet duct is connected to the convergence port; the high-pressure airflow generated by the multiple fan units can be converged to the air outlet duct through the multiple air ducts, so that the air outlet duct can discharge an airflow with greater wind force, thereby improving the axial wind force of the multi-duct exhaust fan and increasing the airflow conduction effect on the tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 The overall structure of the utility model is shown in FIG. Figure 1 ;

[0021] Figure 2 It is an exploded view of the overall structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the chassis structure of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the turbine fan of the present utility model.

[0024] in:

[0025] 1 rack, 10 mounting plate, 11 connecting guide rail, 110 fixed limit block, 111 limit latch, 2 fan unit, 20 chassis, 200 front baffle, 201 frustum ring, 202 air outlet, 203 air inlet, 204 connecting convex strip, 21 turbine fan, 210 air blower, 3 air guide duct, 30 annular connecting plate, 4 air outlet duct. DETAILED DESCRIPTION

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the present invention; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present invention or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0027] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0028] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0029] See attached Figure 1 -Attached Figure 4 The present embodiment further discloses a multi-duct exhaust fan, which includes a frame 1, a plurality of fan units 2, a plurality of air guide ducts 3 and an air outlet duct 4; the plurality of fan units 2 are arranged on the frame 1; the plurality of air guide ducts 3 and the plurality of fan units 2 are arranged in a one-to-one correspondence, one end of the air guide duct 3 is connected to the ventilation unit 2, and the other ends of the plurality of air guide ducts 3 are interconnected to form a converging port; one end of the air outlet duct 4 is connected to the converging port.

[0030] Specifically, the multi-duct exhaust fan can be placed on the ground of the tunnel for air flow conduction. To this end, multiple fan units 2 are installed on the frame 1 in a vertical arrangement. In the present embodiment, three air ducts 3 are provided, wherein the middle air duct 3 is coaxially connected to the air outlet duct 4, and the air ducts 3 on both sides are L-shaped tubes. The ends of the air ducts 3 on both sides are connected to the side walls of the middle air duct 3, and the air ducts 3 on both sides are connected to the side walls of the middle air duct 3 by welding, and the side walls of the air ducts 3 have corresponding openings, so that the three air ducts 3 form a converging port here, and the air outlet duct 4 is coaxially welded with the middle air duct 3. The high-pressure airflow generated by the multiple fan units 2 can be converged to the air outlet duct 4 through the multiple air ducts 3, so that the air outlet duct 4 can discharge the airflow with strong wind force, thereby improving the axial wind force of the multi-duct exhaust fan and increasing the air flow conduction effect on the tunnel.

[0031] See attached Figure 2 , the rack 1 is provided with a plurality of mounting plates 10 corresponding to the plurality of fan units 2; the fan unit 2 comprises a chassis 20 and a turbine fan 21; the chassis 20 is fixed on the mounting plate 10, a front baffle 200 is provided at the front end of the chassis 20, and an air outlet 202 is provided on the front baffle 200, one end of the air duct 3 is connected to the front baffle 200 and connected to the air outlet 202; an air inlet 203 is also provided on the chassis 20; the turbine fan 21 is installed in the chassis 20. Specifically, the mounting plate 10 is provided with two connecting rails 11, and two connecting ridges 204 are provided at the bottom of the chassis 20; the two connecting ridges 204 are correspondingly installed on the two connecting rails 11; a fixed limit block 110 is provided at one end of the connecting rail 11, and a limit pin 111 is provided at the other end of the connecting rail 11; the sliding of the chassis 20 on the connecting rail 11 is limited by the fixed limit block 110 and the limit pin 111. During installation, align the two connecting protrusions 204 of the chassis 20 with the two connecting guide rails 11 on the mounting plate 10. When the connecting protrusions 204 hit the fixed limit blocks 110, the limit pins 111 are used to limit the position, and then the chassis 20 is installed on the rack 1. The detachable connection method is conducive to the maintenance and replacement of components such as the chassis 20.

[0032] In order to facilitate the connection between the air duct 3 and the chassis 20, the multi-duct exhaust fan also includes a plurality of sets of locking bolts and nuts (not shown in the drawings of this embodiment), and an annular connecting plate 30 is provided on one end of the air duct 3, the annular connecting plate 30 is attached to the front baffle 200 of the chassis 20, and the annular connecting plate 30 and the front baffle 200 are both provided with a plurality of through holes, the locking bolts pass through the through holes and are threadedly connected with the nuts, and the annular connecting plate 30 on the air duct 3 is attached to the front baffle 200 of the chassis 20, and is fixed by the locking bolts and nuts, so that the connection is tightly fitted and airtight, thereby improving the airtightness of the connection and ensuring that the airflow can smoothly pass through the air duct 3 to reach the air outlet duct 4.

[0033] See attached Figure 3 A frustum ring 201 is provided at the front end of the chassis 20, and the front baffle 200 is installed on the frustum ring 201. The air inlets 203 are distributed on the side walls of the frustum ring 201. By opening the air inlets 203 on the inclined frustum ring 201, it is possible to avoid the air inlet 203 being blocked when the multi-duct exhaust fan is installed against a wall. In this embodiment, the frustum ring 201 is a filter mesh structure as a whole, that is, the entire frustum ring 201 can be regarded as the air inlet 203 of the chassis 20, thereby expanding the air intake of the chassis 20, so that the turbine fan 21 can better absorb the airflow for blowing.

[0034] In order to further increase the wind force, each chassis 20 includes two turbine fans 21, and the turbine fans 21 have multiple air nozzles 210. The air outlet 202 on the front baffle 200 is provided with multiple air nozzles 210 of the two turbine fans 21, so that the air nozzles 210 are connected to the air outlet 202. Specifically, the turbine fans 21 adopt the form of a double-headed motor with two impellers and a volute, which can increase the air volume.

[0035] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A multi-duct exhaust fan, characterized in that: include: Rack, multiple fan units, multiple air ducts and air outlet ducts; A plurality of the fan units are arranged and installed on the rack; The plurality of air guide ducts and the plurality of fan groups are arranged in one-to-one correspondence, one end of the air guide duct is connected to the fan group, and the other ends of the plurality of air guide ducts are connected to each other to form a convergence port; One end of the air outlet pipe is connected to the converging port.

2. A multi-duct exhaust fan according to claim 1, characterized in that: The rack is provided with a plurality of mounting plates corresponding to a plurality of fan units; the fan unit comprises a chassis and a turbine fan; The chassis is fixed on the mounting plate, a front baffle is provided at the front end of the chassis, an air outlet is provided on the front baffle, one end of the air duct is connected to the front baffle and connected to the air outlet; an air inlet is also provided on the chassis; the turbine fan is installed in the chassis.

3. A multi-duct exhaust fan according to claim 2, characterized in that: The mounting plate is provided with two connecting rails, and the bottom of the chassis is provided with two connecting convex strips; the two connecting convex strips are correspondingly installed on the two connecting rails; A fixed limit block is provided at one end of the connecting guide rail, and a limit latch is provided at the other end of the connecting guide rail; the sliding of the chassis on the connecting guide rail is limited by the fixed limit block and the limit latch.

4. The multi-duct exhaust fan according to claim 2, characterized in that: It also includes multiple sets of locking bolts and nuts. An annular connecting plate is provided on one end of the air duct. The annular connecting plate is attached to the front baffle of the chassis, and multiple through holes are provided on the annular connecting plate and the front baffle. The locking bolts pass through the through holes and are threadedly connected to the nuts.

5. The multi-duct exhaust fan according to claim 2, characterized in that: A frustum ring is provided at the front end of the chassis, the front baffle is mounted on the frustum ring, and the air inlets are distributed on the side walls of the frustum ring.

6. The multi-duct exhaust fan according to claim 2, characterized in that: Two turbo fans are provided, and each turbo fan has a plurality of air blowing nozzles, and the plurality of air blowing nozzles are all connected to the air outlet.

7. The multi-duct exhaust fan according to claim 1, characterized in that: The air guide pipes are provided with three, the middle air guide pipe is coaxially connected with the air outlet pipe, the air guide pipes on both sides are L-shaped pipes, and the ends of the air guide pipes on both sides are connected to the side wall of the middle air guide pipe.

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