CN220378544U - Two-way equivalent air-out fan with adjustable fan blade - Google Patents

Abstract

The utility model belongs to the field of fans, and relates to an axial flow fan, in particular to a fan blade-adjustable bidirectional equivalent air outlet fan, which comprises a shell, a driving motor and an impeller, wherein the impeller comprises a hub and fan blades, the hub is cylindrical, the fan blades comprise fan blade main bodies and mounting ends, the fan blade main bodies are double-wing-shaped, the mounting ends comprise threaded rods, one ends, far away from the fan blade main bodies, of the threaded rods are fixedly connected with end caps, screw caps are connected onto the threaded rods in a threaded manner, positioning blocks are arranged between the end caps and the screw caps, and the positioning blocks are sleeved on the threaded rods in a sleeved mode. According to the utility model, the mounting groove is formed in the hub, and the mounting end is pressed tightly in the mounting groove through the sliding block, so that the mounting end is convenient to detach. The utility model has simple structure, easy manufacture and suitability for popularization and use.

Description

Two-way equivalent air-out fan with adjustable fan blade

Technical Field

The utility model belongs to the field of fans, relates to an axial flow fan, and particularly relates to a bidirectional equivalent air outlet fan with adjustable fan blades.

Background

The main structure of the axial flow fan comprises a shell, a driving motor and an impeller, wherein the driving motor drives the impeller to rotate to generate wind power. The impeller comprises a hub and a plurality of blades on the hub, and the air outlet efficiency of the axial flow fan can be adjusted by changing the shape and the angle of the blades. Most axial flow fans at present achieve the effect of high forward air outlet efficiency by adjusting the shape and the angle of the fan blades, such as the common exhaust fan, and when the fan is reversed, the reverse air outlet efficiency is low. The patent CN91206340.8 discloses a bidirectional axial flow fan, the wing profile of the blade is formed by reversely attaching two identical wing original wing profiles which have smaller relative thickness and plane bottom surface, and the bidirectional axial flow fan can be used for alternately carrying out forward ventilation and reverse ventilation, and the forward air supply efficiency and the reverse air supply efficiency are basically the same.

However, the above two examples cannot flexibly adjust the forward or reverse air supply efficiency, specifically, the fan blade and the hub are fixedly connected, the fan blade angle is preset, and the fan blade angle cannot be flexibly adjusted according to the use scenario, so that there is a need for an axial flow fan with convenience in adjusting the fan blade angle.

Disclosure of Invention

The utility model provides the bi-directional equivalent air outlet fan with adjustable fan blades, which is convenient to detach the fan blades, rotates the fan blade angle and has stable structure, aiming at the problems

In order to achieve the purpose, the technical scheme adopted by the utility model is that the bidirectional equivalent air-out fan with adjustable fan blades comprises a shell, a driving motor and an impeller, wherein the impeller comprises a hub and fan blades, the hub is cylindrical, a threaded rod, one end of the threaded rod, which is far away from a fan blade main body, is fixedly connected with an end cap, a nut is connected onto the threaded rod in a threaded manner, a positioning block is arranged between the end cap and the nut, and the positioning block is sleeved on the threaded rod;

the outer edge of the hub is provided with a plurality of mounting grooves, a sliding block used for pressing the positioning block is connected in a sliding manner in the mounting grooves, and the sliding block is connected with the hub in a bolt connection manner.

Preferably, the positioning block is in a quadrangular prism shape, and two baffles are fixedly connected to the side face of the positioning block.

Preferably, a clamping block is fixedly connected to one side of the sliding block, and the clamping block is inserted between the two baffles.

Preferably, the lower side of the sliding block is fixedly connected with a protrusion, the mounting groove is communicated with a slideway corresponding to the protrusion, and the protrusion is embedded into the slideway along the direction perpendicular to the end face of the hub.

Preferably, the sliding block is fixedly connected with an extension plate, and the extension plate is fixed on the hub in a bolt connection mode.

Compared with the prior art, the utility model has the advantages and positive effects that,

according to the utility model, the mounting groove is formed in the hub, and the mounting end is pressed tightly in the mounting groove through the sliding block, so that the mounting end is convenient to detach. In addition, the installation end comprises a threaded rod, a positioning block and a screw cap for fixing the positioning block on the threaded rod, and the threaded rod can be rotated by loosening the screw cap, so that the fan blade main body can rotate along with the threaded rod, and the fan blade angle can be conveniently adjusted. The utility model has simple structure, easy manufacture and suitability for popularization and use.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort to a person skilled in the art.

FIG. 1 is a schematic diagram of a fan blade adjustable bi-directional equivalent air outlet fan;

FIG. 2 is a schematic structural view of a hub;

FIG. 3 is a schematic view of a fan blade;

FIG. 4 is an enlarged view of the structure of FIG. 3 at A;

fig. 5 is a schematic structural view of the slider.

In the above figures, 1, a casing; 2. a hub; 21. a mounting groove; 22. a slideway; 23. a screw hole; 3. a fan blade; 31. a fan blade body; 32. a threaded rod; 33. a screw cap; 34. a baffle; 35. a positioning block; 36. an end cap; 4. a slide block; 41. an extension plate; 42. a protrusion; 43. and (5) clamping blocks.

Detailed Description

In order that the above objects, features and advantages of the utility model will be more clearly understood, a further description of the utility model will be rendered by reference to the appended drawings and examples. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced otherwise than as described herein, and therefore the present utility model is not limited to the specific embodiments of the disclosure that follow.

As shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, a fan blade adjustable bidirectional equivalent air outlet fan comprises a casing 1, a driving motor and an impeller, wherein the impeller comprises a hub 2 and a fan blade 3, the hub 2 is cylindrical, in order to flexibly adjust the angle of the fan blade, the fan blade 3 comprises a fan blade main body 31 and a mounting end, the fan blade main body 31 is in a double wing shape, the double wing shape is a common shape of the fan blade main body 31 of the axial fan, when the deflection angle alpha (alpha is generally 45 DEG) of the fan blade main body 31 is set on the premise, the driving motor drives the hub 2 to rotate forwards or reversely, the forward and reverse air outlet efficiency is the same, in addition, the mounting end comprises a threaded rod 32, one end of the threaded rod 32 is fixedly connected with the fan blade main body 31, one end of the threaded rod 32 far away from the fan blade main body 31 is fixedly connected with an end cap 36, a nut 33 is in threaded connection on the threaded rod 32, a positioning block 35 is arranged between the end cap 36 and the nut 33, and the positioning block 35 is sleeved on the threaded rod 32;

the outer edge of the wheel hub 2 is provided with a plurality of mounting grooves 21, the mounting grooves 21 are provided with openings on the outer edge of the wheel hub 2 and the end face of the wheel hub 2, a sliding block 4 used for pressing the positioning block 35 is connected in a sliding manner in the mounting grooves 21, and the sliding block 4 is connected with the wheel hub 2 through a bolt connection mode.

Specifically, the flow of adjusting the angle of the fan blade 3 is as follows: loosening the bolts, taking out the slide block 4 and the positioning block 35 from the mounting groove 21, loosening the nuts 33, rotating the blade body 31, specifically, relatively rotating the blade body 31 and the positioning block 35, then tightening the nuts 33, clamping the positioning block 35 by the nuts 33 and the end caps 36, preventing the positioning block 35 and the blade body 31 from relatively rotating, then plugging the positioning block 35 and the slide block 4 into the mounting groove 21, and tightening the bolts to complete the fixation. Therefore, the device can finish the angle adjustment of the fan blade according to the requirement.

Further, the positioning block 35 is in a quadrangular shape, preferably a regular quadrangular shape, and is provided with a rectangular mounting groove 21, and the mounting groove 21 and the rectangular mounting groove are matched, the positioning block 35 cannot rotate in the mounting groove 21, two baffles 34 are fixedly connected to the side face of the positioning block 35, and the two baffles 34 are parallel.

Further, a clamping block 43 is fixedly connected to one side of the sliding block 4, and the clamping block 43 is inserted between the two baffles 34, so that the positioning effect is enhanced, namely, the positioning block 35 is prevented from being separated from the hub 2 under the influence of the rotating centrifugal force.

Further, the lower side of the slider 4 is fixedly connected with a protrusion 42, the mounting groove 21 is communicated with a slideway 22 corresponding to the protrusion 42, and the protrusion 42 is embedded into the slideway 22 along the direction perpendicular to the end face of the hub 2, so that the slider 4 can only move along the direction perpendicular to the end face of the hub 2. The advantage is that if the protrusions 42 and the slide ways 22 are not provided, when the sliding block 4 is installed in the installation groove 21 below the hub 2, the sliding block 4 needs to be held by hands before the bolts are not installed because the installation groove 21 is opened downwards, otherwise the sliding block 4 falls.

Further, in order to achieve the above connection between the slider 4 and the hub 2 through the bolt connection, the slider 4 is fixedly connected with the extension plate 41, the extension plate 41 is fixed on the hub 2 through the bolt connection, and the hub 2 is provided with a plurality of screw holes 23 for installing bolts.

The present utility model is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present utility model without departing from the technical content of the present utility model still belong to the protection scope of the technical solution of the present utility model.

Claims (5)

1. The utility model provides a fan blade adjustable two-way equivalent air-out fan, includes casing, driving motor, impeller, the impeller includes wheel hub and flabellum, wheel hub is cylindric, its characterized in that, the flabellum includes flabellum main part and installation end, the flabellum main part is the double wing form, the installation end includes the threaded rod, the one end fixed connection end cap of threaded rod far away from the flabellum main part, threaded rod is last threaded connection has the nut, be provided with the locating piece between end cap and the nut, the locating piece cup joints on the threaded rod;

the outer edge of the hub is provided with a plurality of mounting grooves, a sliding block used for pressing the positioning block is connected in a sliding manner in the mounting grooves, and the sliding block is connected with the hub in a bolt connection manner.

2. The fan blade adjustable bi-directional equivalent air outlet fan as recited in claim 1, wherein the positioning block is in a quadrangular prism shape, and two baffles are fixedly connected to the side surface of the positioning block.

3. The fan blade adjustable bi-directional equivalent air outlet fan as recited in claim 2, wherein one side of the sliding block is fixedly connected with a clamping block, and the clamping block is inserted between two baffles.

4. The fan blade-adjustable bi-directional equivalent air outlet fan according to claim 1, wherein a protrusion is fixedly connected to the lower side of the sliding block, the mounting groove is communicated with a slideway corresponding to the protrusion, and the protrusion is embedded into the slideway along the direction perpendicular to the end face of the hub.

5. The fan blade adjustable bi-directional equivalent air outlet fan as recited in claim 1, wherein the slide block is fixedly connected with an extension plate, and the extension plate is fixed on the hub by means of bolt connection.