CN217976717U - Fan blade capable of adjusting radius and angle - Google Patents

Abstract

The utility model relates to a fan blade of adjustable radius and angle relates to fan part field, and it includes the blade, the blade root sets up the cavity structure, has improved fan intensity and stability.

Description

Fan blade capable of adjusting radius and angle

Technical Field

The utility model relates to a fan part field, concretely relates to fan blade of adjustable radius and angle.

Background

The fan plays an important role in ventilation, exhaust and cooling, and the excellent performance of the fan is usually reflected in the noise level, the vibration level and the air volume. The excellent performance of the fan which is pursued by people is that the noise is small, the vibration is low and the air quantity is large, but the service life, the strength and the stability of the fan are also important aspects of people.

Traditional fan noise is a little big, and intensity and stability are a little low, and fan blade life is waited to improve, can not adjust blade installation angle, can not adjust the radius under the condition of not changing the blade.

SUMMERY OF THE UTILITY MODEL

Based on above-mentioned current fan noise is slightly big, and intensity and stability are slightly low, and fan blade life remains to improve, can not adjust blade installation angle, can not adjust radial problem under the condition of not changing the blade to for solving above-mentioned current fan noise is slightly big, and intensity and stability are slightly low, and fan blade life remains to improve, can not adjust blade installation angle, can not adjust radial problem under the condition of not changing the blade, the utility model provides a but the fan blade of adjustable radius and angle to provide following technical scheme:

the utility model provides a but fan blade of adjustable radius and angle, it includes the blade, the blade root sets up the cavity structure.

Preferably, the blade further comprises a profile body, the blade root is provided with a conical cavity structure, and the blade is adjustably connected with the profile body.

Preferably, the blade root portion is provided with a conical cavity structure, the outer edge of the cavity structure of the blade root portion is provided with an adjusting portion, the inner wall of the contour body is provided with a connecting fixing portion, and the adjusting portion is matched with the connecting fixing portion.

Preferably, the regulating part is n regulation teeth, and n regulation teeth are annularly arranged and set up, connect the fixed part and be the draw-in groove, adjust the rotatory draw-in groove that is fixed in of tooth to angle regulation.

Preferably, the profile body includes an upper profile body and a lower profile body, the upper profile body is fixedly connected to the lower profile body, and the blade is engaged with the lower profile body to adjust an angle thereof, and then a reinforcing liquid is injected.

Preferably, the blade comprises a main body, and a groove parts are arranged between the main body and the cavity structure and matched with the contour body, so that the radius is convenient to adjust.

Preferably, a buffer rubber ring is arranged in the groove in a matching mode.

Preferably, at least one noise reduction rib is arranged on the outer edge of the blade.

Preferably, the blade side is provided with b noise reduction teeth, b =1,2,3,4,5,6 \ 8230 \8230;.

Preferably, b noise reduction teeth, b =1,2,3,4,5,6, 8230, are distributed on the blade.

The utility model provides a pair of blade of adjustable radius and angle's an aim at can adjust the blade radius, improves the commonality of blade.

The utility model provides a pair of another aim at of fan blade of adjustable radius and angle can adjust blade installation angle, improves the commonality of blade.

The utility model provides a pair of another aim at of fan blade of adjustable radius and angle has reduced manufacturing cost.

The utility model provides a pair of another purpose of fan blade of adjustable radius and angle is in can combing the air current, reduces pneumatic noise.

The utility model provides a pair of another aim at of fan blade of adjustable radius and angle fills elastic material for buffering or fixed for supplementary root of blade.

The utility model provides a pair of another aim at of fan blade of adjustable radius and angle has improved the life of fan blade.

The utility model provides a pair of another aim at of fan blade of adjustable radius and angle has improved fan intensity and stability.

The utility model provides a pair of another aim at of fan blade of adjustable radius and angle makes the fan blade more practical, nimble.

Drawings

FIG. 1 is an assembly schematic of an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a profile body according to an embodiment of the present invention;

fig. 3 is a perspective view of an assembly structure of an embodiment of the present invention;

fig. 4 is a schematic view of a blade structure according to an embodiment of the present invention;

fig. 5 is a front view schematic diagram of a blade according to an embodiment of the present invention.

In the figure: the blade-1, the main body-11, the noise reduction ribs-12, the noise reduction teeth-13, the cavity structure-2, the adjusting part-21, the adjusting teeth-211, the clamping groove-212, the connecting fixing part-22, the groove part-23, the outline body-3 and the lower outline body-31.

Detailed Description

The present invention is further described below with reference to fig. 1-5 and the detailed description.

The following description is provided to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments described below are by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships that are based on those shown in the drawings, which are merely for convenience in describing the present disclosure and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus the terms are not to be construed as limiting the invention.

The utility model provides a fan blade of adjustable radius and angle, it includes blade 1, 1 root of blade sets up cavity structure 2.

The arrangement of the cavity structure 2 at the root part of the blade 1 is convenient for injecting reinforcing liquid, further reinforcing the fan blade and stabilizing the fan.

Further, the blade also comprises a profile body 3, a conical cavity structure 2 is arranged at the root of the blade 1, and the blade 1 is adjustably connected with the profile body 3.

The blade 1 and the outline body 3 are adjustably connected, so that the blade installation angle of the blade 1 and the outline body 3 can be adjusted, and the universality of the blade 1 is improved.

Further, 1 root of blade sets up toper cavity structure 2, 2 outer edges of the cavity structure of 1 root of blade set up regulating part 21, the 3 inner walls of outline set up connection fixed part 22, regulating part 21 with connect fixed part 22 phase-match. Specifically, the setting of regulating part 21 is convenient for adjust fan blade installation angle, improves the commonality of fan blade, reaches fan performance requirement.

The conical cavity structure 2 can be filled with various materials according to the requirements of product performance. In addition, in the later use, the adjusting portion 21 may cause risks such as aging or damage after corrosion strength is reduced, in this case, after the angle between the blade 1 and the lower profile body 31 is adjusted, rubber or soft glue is injected, the liquid rubber or soft glue can penetrate into a fit gap between the blade 1 and the lower profile body 31, after the rubber is cured, the fixing strength can be greatly enhanced, various risks are reduced, the running stability of the fan is improved, and the rubber ring can be prevented from overflowing.

The diameter of the bottom of the conical cavity structure 2 is d1, the diameter of the root of the blade 1 is d2, and d1 is less than or equal to 3/5 × d2. The height of the conical cavity is h2, the height of the strengthening position of the root of the fan blade is h1, and h1 is less than or equal to 4/5 x h2.

The connecting and fixing part 22 is convenient to match with the adjusting part 21, so that the purpose of adjusting the installation angle of the fan blade is achieved.

Further, the adjusting portion 21 is formed by n adjusting teeth 211, the n adjusting teeth 211 are annularly arranged, the connecting and fixing portion 22 is a slot 212, and the adjusting teeth 211 are rotatably fixed in the slot 212 to adjust the angle.

The matching structure of the adjusting teeth 211 and the engaging slots 212 is a preferred embodiment of the present invention, and the adjusting teeth are matched with the engaging slots in different tooth shapes, and the angle is different. The angle modulation can cooperate fan blade radius regulation design, and after the fan blade radius changed, often need angle modulation simultaneously, makes the fan blade performance reach the requirement, and fan blade installation angle is adjustable to make 1 universal of blade, makes the fan blade performance satisfy the customer requirements of most through adjusting 1 radius of blade and angle.

Further, the contour body 3 includes an upper contour body and a lower contour body 31, the upper contour body is fixedly connected with the lower contour body 31, and after the blade 1 and the lower contour body 31 are clamped and angle-adjusted, whether to inject the reinforcing liquid is flexibly selected according to the actual requirement of the blade. In addition, the fixed connection mode between the upper profile and the lower profile is screw connection, including but not limited to screw connection.

The upper hub body and the lower hub body are completely the same and are buckled to form a complete hub fixing structure. The blade 1 is fixed in a wind blade wheel hub, a rubber ring is sleeved in a groove at the root part of the blade and is arranged on a lower wheel hub, an angle adjusting structure is buckled, rubber (other materials or no materials) is injected into a conical cavity, the upper wheel hub is covered, a fixing screw rod is screwed in, the wind blade and a motor are fixed together, and a complete fan is formed after a panel mesh enclosure is installed.

Preferably, the blade 1 comprises a main body 11, a groove portions 23 are formed between the main body 11 and the cavity structure 2, and the groove portions 23 are matched with the contour body 3, so that the radius is convenient to adjust, and a =1,2,3,4,5,6, \ 8230;, 8230;.

Preferably, a buffer rubber ring is arranged in the groove part 23 in a matching way.

The rubber ring is arranged:

(1) The glue is prevented from overflowing to the surface of the product, the appearance of the product is prevented from being influenced, and unnecessary working procedures in production are reduced;

(2) The friction loss between the self vibration of the blade and the hub is reduced, and the service life of the product is prolonged.

Specifically, the groove 23 includes n grooves, and a cushion rubber ring is disposed in the grooves to reduce the rigid contact between the blade 1 and the contour body 3. In the running process of the fan, on one hand, the fixation looseness of the profile body 3 caused by the vibration of the blade 1 can be reduced, so that the running of the fan is more stable, the noise caused by the structure of the fan is reduced, and the service life is prolonged; on the other hand, the relative rotation between the blade 1 and the profile body 3 is reduced, the strength requirement of an angle adjusting structure is reduced, and the blade is matched with a conical cavity at the root of the blade to be used, so that the reinforcing liquid in the cavity is prevented from flowing out.

It should be noted that the reinforcement liquid according to a preferred embodiment of the present invention is rubber or soft glue, including but not limited to rubber or soft glue, which covers a series of materials such as elastic pvc and elastic pp.

The rubber circle is interference fit (R rubber circle < R root promptly) with 1 root recess of blade, makes the rubber circle fix at the root, can not drop, and the rubber circle cross-section is greater than the recess cross-section (d recess < d rubber circle promptly), guarantees that the rubber circle has the contact to produce elastic deformation with 1 root of blade.

Preferably, at least one noise reduction rib 12 is arranged on the outer edge of the blade 1. Specifically, the noise reduction ribs 12 extend outwards from the outer edge of the blade 1 to form rib-shaped protrusions, and are distributed in the mounting direction of the blade, so that noise reduction is facilitated.

Specifically, the blade 1 has a plurality of noise reduction ribs 12, and each noise reduction rib 12 may be used alone as an edge of the maximum outer diameter of the blade 1. The insert of the die is adjusted on the die, and the insert on the die is replaced according to actual requirements, so that the actual length of the blade 1 can be dynamically adjusted.

It should be noted that the design of the noise reduction ribs 12 does not precisely control the radius of the fan blade, and only the length of the corresponding blade 1 is prepared according to the radius of the common fan blade, and the noise reduction ribs 12 are arranged at the position.

More importantly, the arrangement of the noise reduction ribs 12 enables each noise reduction rib 12 to be independently used as the edge of the maximum outer diameter of the fan blade after the forming die is adjusted in the step (1), so that the airflow change from the front to the back of the fan blade 1 is reduced, the efficiency is improved, and the noise is reduced; (2) The noise reduction ribs 12 are marked with adaptive radii, so that the diameters of the fan blades can be conveniently and rapidly identified, the noise reduction ribs 12 are different in number, the length of the fan blades 1 is different, most of fan blades are flexibly applicable, and the overall benefit is improved; (3) The existence of many noise reduction ribs 12 can comb the positive air current of fan operation in-process, reduces the air current turbulent flow, reduces aerodynamic noise, reduces blade 1 vibration.

Preferably, b noise reduction teeth 13,b =1,2,3,4,5,6 \8230; \8230arearranged on the side of the blade 1.

Preferably, b noise reduction teeth 13,b =1,2,3,4,5,6 \ 8230; \8230; "is distributed on the blade 1.

Particularly, a preferred embodiment of the present invention is that b noise reduction teeth 13 are distributed on the side of the blade 1, and the noise reduction teeth 13 are tooth-shaped protrusions formed by extending the side of the blade 1 outwards, which helps to reduce noise.

The distribution of the noise reduction teeth 13 conforms to the functional change y = a + Bsin (ω x + b), and the three-dimensional modeling relationship is sd1= C sin (n × 360 trajpar), sd1 is the distance, C is the amplitude, and n is the number of cycles (the number of teeth/2). The noise reduction teeth 13 can cut airflow, reduce pneumatic noise, reduce fan blade vibration and improve fan performance.

It will be understood by those skilled in the art that the embodiments of the present invention as described above and shown in the drawings are given by way of example only and are not limiting of the present invention. The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the embodiments with the principles in place, embodiments of the present invention can have any number of variations or modifications.

It can thus be seen that the objects of the invention have been fully and effectively accomplished. The embodiment has been shown and described in sufficient detail to explain the functional and structural principles of the invention and that changes may be made without departing from such principles. Accordingly, this invention includes all modifications encompassed within the scope and spirit of the following claims.

Claims (8)

1. The fan blade capable of adjusting the radius and the angle is characterized by comprising a blade (1), wherein a cavity structure (2) is arranged at the root part of the blade (1); the blade is characterized by further comprising a contour body (3), wherein the blade (1) is adjustably connected with the contour body (3); blade (1) root sets up toper cavity structure (2), the cavity structure (2) outer fringe of blade (1) root sets up regulating part (21), profile body (3) inner wall sets up connection fixed part (22), regulating part (21) with connect fixed part (22) phase-match.

2. The fan blade with the adjustable radius and angle according to claim 1, wherein the adjusting portion (21) is provided with n adjusting teeth (211), the n adjusting teeth (211) are annularly arranged, the connecting and fixing portion (22) is provided with a clamping groove (212), and the adjusting teeth (211) are rotatably fixed in the clamping groove (212) to adjust the angle.

3. The fan blade with the adjustable radius and angle according to any one of claims 1 or 2, characterized in that the contour body (3) comprises an upper contour body and a lower contour body (31), the upper contour body is fixedly connected with the lower contour body (31), and after the blade (1) is clamped with the lower contour body (31) to adjust the angle, a reinforcing liquid is injected.

4. The fan blade with adjustable radius and angle according to any one of claims 1 or 2, characterized in that, the fan blade (1) comprises a main body (11), a slot portions (23) are arranged between the main body (11) and the cavity structure (2), and the slot portions (23) are matched with the contour body (3) to facilitate the adjustment of the radius.

5. The fan blade with the adjustable radius and angle as claimed in claim 4, wherein a buffer rubber ring is fittingly arranged in the groove portion (23).

6. The fan blade with the adjustable radius and angle as claimed in any one of claims 1 or 2, wherein at least one noise reduction rib (12) is arranged on the outer edge of the fan blade (1).

7. The fan blade with adjustable radius and angle as claimed in any one of claims 1 or 2, wherein b =1,2,3,4,5,6 \8230 \ 8230: "b noise reduction teeth (13) are arranged at the side of the fan blade (1).

8. The fan blade with the adjustable radius and angle as claimed in any one of claims 1 or 2, characterized in that b =1,2,3,4,5,6 \ 8230 \8230;) noise reduction teeth (13) are distributed on the fan blade (1) in an array.

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