CN209761762U

CN209761762U - Protection type external rotor axial fan

Info

Publication number: CN209761762U
Application number: CN201920421114.1U
Authority: CN
Inventors: 何妮娜
Original assignee: Xi'an North Blower Co Ltd
Current assignee: Xi'an North Blower Co Ltd
Priority date: 2019-03-30
Filing date: 2019-03-30
Publication date: 2019-12-10
Anticipated expiration: 2029-03-30

Abstract

The utility model discloses a protective external rotor axial flow fan in the technical field of external rotor axial flow fans, which comprises a dust hood and a fan cover, wherein the fan cover is fixed on the port of the dust hood through screws, the rear sides of the top and the bottom of the dust hood are butt welded with mounting blocks, the surface of the dust hood is embedded and welded with a plurality of metal filter screens through grooves, a fixing box is utilized to block rainwater, so that the rainwater can not enter the tail end of a motor, meanwhile, a clamping cover extends into the inner cavity of a circular slot, the rainwater can not permeate into a motor shaft through an I-shaped plastic block, when the device rotates rightwards for ninety degrees to be installed, the rainwater enters the inner cavity of the fixing box through the gap between adjacent connecting blocks and is discharged through a T-shaped channel, the rainwater can not enter the inner cavity of a junction box due to the fixation of wire glue injection, the rainwater is discharged in, has practicability.

Description

Protection type external rotor axial fan

Technical Field

The utility model relates to an external rotor axial fan technical field specifically is a protection type external rotor axial fan.

Background

The outer rotor fan adopts an advanced structure and a reasonable pneumatic design of directly driving the impeller by the outer rotor motor, has the characteristics of high efficiency, low noise, light weight, compact structure, convenient installation and maintenance and the like, and is widely applied to building facilities such as hotels, restaurants, industrial and mining enterprises, office buildings, movie theaters and the like as corollary equipment of a refrigerator freezer or for ventilation and heat dissipation. But because external rotor electric machine rotor is outside, the special construction including the stator has decided that it can not accomplish completely sealed, can't be waterproof effectively, can only use under dry operating mode, consequently in the open air or have the environment of rainwater, general daily external rotor axial fan is difficult to realize work, need to design one kind can be in the open air or have the external rotor axial fan that uses under the environmental aspect of rainwater urgently in the actual production life, based on this, the utility model discloses a protection type external rotor axial fan to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a protection type external rotor axial fan to need to design the problem that can use under the environmental aspect of open air or rainwater in the actual production life who proposes among the solution above-mentioned background art urgently.

In order to achieve the above object, the utility model provides a following technical scheme: a protective outer rotor axial flow fan comprises a dust hood and a fan cover, wherein the fan cover is fixed on a port of the dust hood through screws, an installation block is welded on the top and the bottom rear side of the dust hood in a butt mode, a plurality of metal filter screens are embedded and welded on the surface of the dust hood through a through groove, a junction box is fixedly connected to the rear center of the dust hood, a fixed box with an opening facing left is welded in the center of the inner wall of the dust hood, four groups of connecting blocks are evenly welded on the periphery of the inner wall of the opening of the fixed box, a T-shaped channel is arranged in the center of the right side of the inner wall of the fixed box, the bottom opening of the T-shaped channel is located below the fixed box, a motor is arranged in an inner cavity of the fixed box, a shell of the motor is connected with the connecting blocks through bolts, an I-shaped plastic block is adhered to one, the fan blade is fixedly sleeved on the outer wall of a motor shaft of the motor, a clamping cover is coaxially fixed on the inner side of a fixing seat of the fan blade in a gluing mode, an opening of the clamping cover extends to an inner cavity of the circular slot, and a power line of the motor fixedly penetrates through the upper portion of an inner cavity of the T-shaped channel through the glue injection and extends to an inner cavity of the junction box.

Preferably, the metal filter screen is fixed on the front side of the periphery of the dust hood and the upper side and the lower side of the rear surface.

Preferably, the space formed by the connecting blocks and the outer wall of the motor between any two adjacent groups is sealed by a fine metal net.

Preferably, the fine metal net is fixed on the surface of the connecting block by a screw.

Preferably, L-shaped through holes are uniformly arranged at intervals at the sunken positions of the I-shaped plastic blocks, and the inner ends of the L-shaped through holes are sealed by fixing the copper blocks through glue injection.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses utilize fixed box to block the rainwater, make the unable tail end that gets into the motor of rainwater, the while card cover stretches into circular slot inner chamber, the rainwater can 'T pass through I shape plastic block infiltration motor shaft, when the installation ninety degrees installations of device rotation right, the rainwater enters into fixed box inner chamber through the gap between the adjacent connecting block, discharge through T type passageway, because the electric wire injecting glue is fixed, and then can' T get into the terminal box inner chamber, the rainwater is in time discharged, do not influence work, the device simple structure, can use under outdoor or the rainwater condition, and has practicability.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

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

Fig. 2 is a left side view of fig. 1.

In the drawings, the components represented by the respective reference numerals are listed below:

The method comprises the following steps of 1-a dust hood, 2-a wind hood, 3-an installation block, 4-a metal filter screen, 5-a junction box, 6-a fixed box, 7-a connecting block, 8-a T-shaped channel, 9-a motor, 10-an I-shaped plastic block, 11-a circular slot, 12-a fan blade and 13-a clamping cover.

Detailed Description

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

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

referring to fig. 1-2, the present invention provides a technical solution: a protective outer rotor axial flow fan comprises a dust hood 1 and a fan cover 2, the fan cover 2 is fixed on a port of the dust hood 1 through screws, mounting blocks 3 are welded on the top and the bottom rear sides of the dust hood 1 in a butt joint mode, a plurality of metal filter screens 4 are embedded and welded on the surface of the dust hood 1 through grooves, a junction box 5 is fixedly connected to the rear side center of the dust hood 1, a fixing box 6 with an opening facing to the left is welded in the inner wall center of the dust hood 1, four groups of connecting blocks 7 are uniformly welded on the periphery of the opening inner wall of the fixing box 6, a T-shaped channel 8 is arranged in the center of the right side of the inner wall of the fixing box 6, the bottom opening of the T-shaped channel 8 is located below the fixing box 6, a motor 9 is arranged in an inner cavity of the fixing box 6, a shell of the motor 9 is connected with the connecting blocks 7 through bolts, an I-shaped plastic, the outer wall of a motor shaft of the motor 9 is fixedly sleeved with a fan blade 12, a clamping cover 13 is coaxially fixed on the inner side of a fixing seat of the fan blade 12 in an adhesive mode, an opening of the clamping cover 13 extends to an inner cavity of the circular slot 11, and a power line of the motor 9 fixedly penetrates through the upper portion of the inner cavity of the T-shaped channel 8 through the adhesive and extends to the inner cavity of the junction box 5.

The metal filter screen 4 is fixed on the upper side and the lower side of the periphery of the dust hood 1, the space formed by the front side and the rear surface of the periphery of the dust hood 1 and the outer wall of the motor 9 is sealed through the thin metal screen, the effect of filtering and reducing dust blocking of the T-shaped channel 8 is achieved, the thin metal screen is fixed on the surface of the connecting block 7 through screws, L-shaped through holes are formed in the concave parts of the I-shaped plastic blocks 10 at even intervals, the inner ends of the L-shaped through holes are sealed through glue injection fixing copper blocks, heat is conducted through the copper blocks, and heat dissipation through the L-shaped.

One specific application of this embodiment is: when the device is installed as shown in fig. 1, rainwater is blocked by the fixed box 6, the tail end of the existing common motor 9 cannot enter (such as a DKM three-phase asynchronous motor), meanwhile, the clamping cover 13 extends into the inner cavity of the circular slot 11, rainwater cannot penetrate through the I-shaped plastic block 10 to form a motor shaft, when the device is installed by rotating ninety degrees rightwards, rainwater enters the inner cavity of the fixed box 6 through a gap between adjacent connecting blocks 7 and is discharged through the T-shaped channel 8, the rainwater is fixed by wire glue injection and cannot enter the inner cavity of the junction box 5, and the rainwater is timely discharged without affecting work.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a protection type external rotor axial fan, includes dust excluding hood (1) and fan housing (2), its characterized in that: the fan housing (2) is fixed on a port of the dust hood (1) through screws, the top and the bottom rear side of the dust hood (1) are butt welded with an installation block (3), a plurality of metal filter screens (4) are embedded and welded on the surface of the dust hood (1) through grooves, a rear central fixedly connected with junction box (5) of the dust hood (1) is welded with a fixed box (6) with an opening facing left in the central welding of the inner wall of the dust hood (1), four groups of connecting blocks (7) are evenly welded on the periphery of the inner wall of the fixed box (6), a T-shaped channel (8) is arranged in the center of the right side of the inner wall of the fixed box (6), the bottom opening of the T-shaped channel (8) is located below the fixed box (6), a motor (9) is arranged in an inner cavity of the fixed box (6), and a shell of the motor (9) is connected with the, an I-shaped plastic block (10) is fixedly glued on one side of a motor shaft of the motor (9), a circular slot (11) is formed in the right side of the inner wall of the I-shaped plastic block (10), a fan blade (12) is fixedly sleeved on the outer wall of the motor shaft of the motor (9), a clamping cover (13) is coaxially fixed on the inner side of a fixing seat of the fan blade (12) in a gluing mode, an opening of the clamping cover (13) extends to the inner cavity of the circular slot (11), and a power line of the motor (9) fixedly penetrates through the upper portion of the inner cavity of the T-shaped channel (8) through glue injection and extends to the inner cavity of the junction box (.

2. The protection type outer rotor axial flow fan according to claim 1, characterized in that: the metal filter screens (4) are fixed on the front side of the periphery of the dust removing cover (1) and the upper side and the lower side of the rear surface.

3. The protection type outer rotor axial flow fan according to claim 1, characterized in that: the space between any two adjacent groups of the connecting blocks (7) and the space formed by the outer wall of the motor (9) are sealed by a fine metal net.

4. A protective outer rotor axial flow fan according to claim 3, wherein: the thin metal net is fixed on the surface of the connecting block (7) through screws.

5. The protection type outer rotor axial flow fan according to claim 1, characterized in that: l-shaped through holes are uniformly arranged at the sunken positions of the I-shaped plastic blocks (10) at intervals, and the inner ends of the L-shaped through holes are sealed by fixing copper blocks through glue injection.