CN209781300U

CN209781300U - Centrifugal fan

Info

Publication number: CN209781300U
Application number: CN201920507208.0U
Authority: CN
Inventors: 周小余
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-15
Filing date: 2019-04-15
Publication date: 2019-12-13
Anticipated expiration: 2029-04-15

Abstract

The utility model provides a centrifugal fan relates to gas transmission technical field, has solved current centrifugal fan and has had the extravagant technical problem of the energy. This centrifugal fan includes shell, wind wheel, wind-guiding strip, the shell reaches the wind wheel is the tubular structure, the wind wheel with the shell is coaxial to be set up inside the shell to be connected with motor drive through the wind wheel axle, be provided with the air intake along the axial on the shell, follow the wind wheel radially is provided with the air outlet, the both ends face of wind wheel with axial direction between the both ends face of shell all leaves the interval, the wind-guiding strip is the annular setting and is in just be located on the inner wall of shell both ends face the interval department. So set up, can make the inside wind that carries out irregular motion that exists of fan discharge from the aviation baffle to can satisfy multi-angle wind-guiding, thereby improve the availability factor of fan, avoid the energy extravagant.

Description

Centrifugal fan

Technical Field

The utility model belongs to the technical field of the gas transportation technique and specifically relates to a centrifugal fan is related to.

Background

The fan is a Chinese habit short for gas compression and gas conveying machinery, and generally comprises a ventilator, a blower and a wind driven generator, wherein the fan is a machine which increases gas pressure and discharges gas by depending on input mechanical energy, is a driven fluid machine and is widely used for ventilation, dust exhaust and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, and ventilation and induced air of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selecting grain, wind tunnel wind source and air cushion boat inflating and propelling.

According to the principle that kinetic energy is converted into potential energy, the centrifugal fan accelerates air by utilizing an internal wind wheel rotating at a high speed, then decelerates and changes the flow direction, so that the kinetic energy is converted into the potential energy.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a centrifugal fan has solved the technical problem that the centrifugal fan who exists causes the energy extravagant among the prior art. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.

In order to achieve the above purpose, the utility model provides a following technical scheme:

The utility model provides a centrifugal fan, including shell, wind wheel, wind-guiding strip, the shell reaches the wind wheel is the tubular structure, the wind wheel with the shell is coaxial to be set up inside the shell to be connected with motor drive through the wind-wheel axle, be provided with the air intake along the axial on the shell, follow the wind wheel radially is provided with the air outlet, the both ends face of wind wheel with axial direction between the both ends face of shell all leaves the interval, the wind-guiding strip is the annular setting and is in just be located on the inner wall of shell both ends face interval department.

Preferably, the air guide strips are regular wavy structures, and the wave troughs on one side of the air guide strips close to the axis are air guide channels.

Preferably, the wind guide channel is inclined towards the direction in which the wind wheel is located.

Preferably, the wind guide channel is inclined toward the rotation direction of the wind wheel.

Preferably, the width of the wind guide strip is equal to the axial distance from the end face of the wind wheel on the side where the wind guide strip is located to the end face of the outer shell.

Preferably, the diameter of an annular structure formed by the wind guide strips around the wind wheel is larger than that of the wind wheel.

Preferably, the number of the air guide strips is two, and the two air guide strips are respectively arranged on the inner side walls of the two end surfaces of the shell.

preferably, the number of the air guide strips is one, and the air guide strips are arranged on the inner wall of the end face of one side of the air inlet on the shell.

Preferably, the number of the air guide strips is one, and the air guide strips are arranged on the inner wall of the end face, opposite to the end face of the air inlet, of the shell.

Preferably, the air guide strip is fixed on the outer shell in a welding mode.

The technical scheme of the utility model, adopt the wind-guiding strip structure to set up on fan shell terminal surface inner wall, prevent that the wind wheel terminal surface from carrying out irregular motion to the wind of the interval department of fan shell terminal surface, and be provided with the wind-guiding passageway on the wind-guiding strip, the wind-guiding passageway inclines to wind wheel direction, the wind flow that can guide both ends is to wind wheel department, the wind-guiding passageway inclines towards wind wheel pivoted direction, the wind that can guide the fan both ends joins with the wind that normally flows in the fan, realize multi-angle wind-guiding under the effect of wind-guiding passageway, finally discharge along the air outlet, the work efficiency of fan has effectively been improved, the waste of the energy has been avoided.

Drawings

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

Fig. 1 is a schematic structural view of a centrifugal fan provided by the present invention;

Fig. 2 is a side view of a centrifugal fan provided by the present invention;

Fig. 3 is a schematic structural view of the wind guide strip provided by the present invention.

In the figure: 1. a housing; 2. a wind wheel; 3. wind guide strips; 4. an air inlet; 5. an air outlet; 6. and (4) an air guide channel.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

This embodiment provides three kinds of embodiments, can make the inside wind that carries out irregular motion that exists of fan discharge from the aviation baffle to improve centrifugal fan's availability factor, avoid the energy waste.

Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below do not limit the scope of the invention described in the claims. Further, the entire contents of the configurations shown in the following embodiments are not limited to those necessary as a solution of the invention described in the claims.

The first embodiment is as follows:

Referring to fig. 1 and 2, the centrifugal fan provided by the present invention comprises a housing 1, a wind wheel 2, and a wind guide strip 3, wherein the housing 1 and the wind wheel 2 are both in a tubular structure, the wind wheel 2 and the housing 1 are coaxially arranged inside the housing 1, the wind wheel 2 is in transmission connection with the motor through a shaft of the wind wheel 2, an air inlet 4 is arranged on the outer shell 1 along the axial direction, an air outlet 5 is arranged along the radial direction of the wind wheel 2, the outer shell 1 is in a snail shell shape as a whole, the wind guide strips 3 are annularly arranged on the inner walls of two end surfaces of the outer shell 1, intervals are reserved between the two end surfaces of the wind wheel 2 and the two end surfaces of the outer shell 1 along the axial direction, the wind guide strips 3 are positioned at the intervals, the wind guide strips 3 are used for guiding the wind at two ends of the wind wheel 2 to flow to the wind wheel 2 and discharging from the air outlet, the fan can effectively prevent wind from doing irregular motion inside the fan, thereby improving the working efficiency of the fan. It should be noted that fig. 1 only shows the structure of the wind-guiding strips 3 at the wind outlet 5, the annular structure formed by the wind-guiding strips 3 can be seen in fig. 2, and the ends of the wind-guiding strips are overlapped at the wind outlet 5.

Specifically, referring to fig. 3, the air guide strips 3 are regular wave-shaped structures, the wave trough parts of the air guide strips 3 are air guide channels 6, the air inside the fan changes the running direction of the air guide channels 6, the air guide channels 6 and most of the air inside the fan are converged, and the air is discharged from the air outlet 5, so that multi-angle air guide is realized.

The wind guide channel 6 inclines towards the direction of the wind wheel 2, and the wind guide channel 6 inclines towards the rotating direction of the wind wheel 2, in popular terms, the wind guide channel 6 inclines towards the inside of the fan and is consistent with the rotating direction of the wind wheel 2, so that the wind at two ends of the fan can flow to the wind wheel 2 from the wind guide channel 6 and is discharged from a wind guide opening of the fan under the action of the wind wheel 2, and due to the fact that the wind guide strips are of a ring-shaped structure, multi-angle wind guide can be achieved, it needs to be noted that the wind inside the fan comprises the wind inside and outside the ring-shaped structure formed by the wind guide strips 3, the wind guide channels 6 on two surfaces of the wind guide strips can play a wind guide effect, two wind guide strips 3 in the figure 3 are of a linear structure and need to be bent to form the ring-shaped structure when being installed, and the relative position relation of the two, the middle positions of the two wind guide strips 3 are the installation positions of the wind wheels 2, and the downward direction in the figure is the rotating direction of the wind wheels 2

The utility model provides an among the preferred embodiment, 2 two end faces of wind wheel with all leave the interval between the both ends face of shell 1, the width of wind-guiding strip 3 equals 2 terminal surfaces of wind wheel of its place one side to the axial distance of 1 terminal surface of shell, the width of wind-guiding strip 3 equals the interval of 2 terminal surfaces of wind wheel to 1 terminal surface of shell promptly, both can guarantee to lead the wind of interval department to wind wheel 2 departments completely, still can avoid wind-guiding strip 3 to influence the wind that normally flows in 2 departments of wind wheel, in other embodiments, the width of wind-guiding strip 3 also can be a bit bigger than the spaced width, can play the effect that improves fan efficiency equally.

Further, the diameter of the annular structure that wind-guiding strip 3 formed is greater than the diameter of wind wheel 2, indicates that wind-guiding strip 3 encircles 2 settings of wind wheel, guarantees that the wind of optional position can all receive wind-guiding strip 3's guide effect in the fan to still can avoid wind wheel 2 and wind-guiding strip 3 to take place the contact, cause the fan trouble, influence the use.

The air guide strip 3 is fixed on the shell 1 by adopting a welding mode.

The wind wheel 2 in this embodiment is a common wind wheel in the market, and the outer edge of the wind wheel 2 may be widened appropriately, and may also play a role in preventing wind from escaping to some extent, where the outer edge of the wind wheel 2 refers to the annular outer edge of the fixed fan blade located at one end of the air inlet 4.

Example two, example three:

As the two other embodiments of the present invention, the difference from the first embodiment is that the number of the wind guide strips 3 is one, wherein the wind guide strips 3 of the second embodiment are disposed on the inner wall of the end face on one side of the air inlet 4, and the wind guide strips 3 of the third embodiment are disposed on the inner wall of the end face opposite to the side where the air inlet 4 is located.

The fan provided by the second embodiment and the fan provided by the third embodiment can also play a role in guiding wind, and a user can select an installation mode of the wind guiding strips 3 according to actual conditions due to the fact that the size of the interval from the two ends of the wind wheel 2 to the shell 1 may be different.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a centrifugal fan, its characterized in that, includes shell (1), wind wheel (2), wind-guiding strip (3), shell (1) reaches wind wheel (2) are the tubular structure, wind wheel (2) with shell (1) coaxial setting is in inside shell (1) to be connected with motor drive through wind wheel (2) axle, be provided with air intake (4) along the axial on shell (1), follow wind wheel (2) radially are provided with air outlet (5), the both ends face of wind wheel (2) with axial direction between the both ends face of shell (1) all leaves the interval, wind-guiding strip (3) are the annular and set up just be located on the inner wall of shell (1) both ends face the interval department.

2. The centrifugal fan according to claim 1, wherein the air guide strips (3) are regular wave-shaped structures, and the wave trough parts of the air guide strips (3) are air guide channels (6).

3. A centrifugal fan according to claim 2, characterized in that the air guiding channel (6) is inclined towards the direction in which the wind wheel (2) is located.

4. The centrifugal fan according to claim 2, characterized in that the air guiding channel (6) is inclined towards the direction of rotation of the rotor (2).

5. The centrifugal fan according to claim 1, characterized in that the width of the wind guiding strips (3) is equal to the axial distance from the end face of the wind wheel (2) on the side where the wind guiding strips are located to the end face of the housing (1).

6. The centrifugal fan according to claim 1, characterized in that the diameter of the annular structure formed by the wind-guiding strips (3) around the wind wheel (2) is larger than the diameter of the wind wheel (2).

7. The centrifugal fan according to claim 1, wherein the number of the air guide strips (3) is two, and the two air guide strips are respectively arranged on the inner side walls of the two end surfaces of the housing (1).

8. The centrifugal fan as claimed in claim 1, wherein the number of the air guide strips (3) is one, and the air guide strips are arranged on the inner wall of the end face of one side of the air inlet (4) on the shell (1).

9. The centrifugal fan according to claim 1, wherein the number of the air guide strips (3) is one, and the air guide strips are arranged on the inner wall of the end face of the housing (1) opposite to the end face of the air inlet (4).

10. the centrifugal fan according to claim 1, wherein the air guide strips (3) are fixed to the housing (1) by welding.