Guide vane and fan

Abstract

The utility model discloses a guide vane and a fan, and relates to the technical field of refrigeration house cooling, the guide vane comprises a fixed hub, a plurality of guide vanes are uniformly distributed on the periphery of the fixed hub in a radial manner, the end part of each guide vane is connected to a reinforcing ring, each guide vane is an arc plate, and each guide vane is provided with a first torsion part and a second torsion part; the first torsion parts and the second torsion parts are sequentially distributed in the direction deviating from the fixed hub, the chord tangent angles of the guide blades are firstly decreased and then increased in the direction deviating from the fixed hub, the diameter of the reinforcing ring and the arc chord length and chord center distance of each guide blade are arranged in a certain proportion, and the first torsion parts and the second torsion parts are used for guiding airflow. The guide vane solves the technical problems of short cold air range and low air speed of the fan caused by no flow guide structure and turbulence of the blown air flow of the fan.

Description

TECHNICAL FIELD

[0001] The utility model relates to cold store cooling technical field, especially a guide vane and fan. BACKGROUND

[0002] In order to ensure that the indoor temperature distribution is uniform and to accelerate the diffusion rate of cold air in the freezer, a fan is usually arranged at the cold air outlet of the refrigerator, and the cold air is blown to other positions in the room by the fan. However, the ordinary fan does not have auxiliary equipment, and the airflow blown by the fan is turbulent, which leads to the scattering of the airflow, low wind speed, short blowing range and incomplete blowing range.

[0003] Therefore, it is urgent for the person skilled in the art to develop a guide vane that can assist in enhancing the blowing effect of the fan. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of guide vane and fan, solve the technical problems that fan blows out airflow without guide structure, blowing airflow is turbulent, leading to fan cold air short range, low wind speed.

[0005] To achieve the above object, the utility model provides a kind of guide vane, including the fixed hub outer periphery radiation is uniformly distributed with several guide vanes, each guide vane end is connected on reinforcing ring, each guide vane is arc plate, each guide vane has first torsion part and second torsion part, first torsion part and second torsion part are sequentially distributed along the direction of deviating from fixed hub, chord cutting angle of guide vane first decreases and then increases along the direction of deviating from fixed hub, the diameter of reinforcing ring and the chord length and chord center distance of each guide vane are set in a certain proportion, first torsion part and second torsion part are used to guide airflow.

[0006] Preferably, one end of the first torsion part is connected to the fixed hub, the chord cutting angle of the side wall of the first torsion part is in the range of 13° to 29.5°, the chord cutting angle of the first torsion part decreases towards the side away from the hub, the chord cutting angle of the side wall of the second torsion part is in the range of 13° to 18°, and the chord cutting angle of the second torsion part increases towards the side away from the fixed hub. The end of the largest chord cutting angle of the second torsion part is connected to the reinforcing ring.

[0007] Preferably, the ratio of the chord center distance of the guide vane to the diameter of the reinforcing ring is in the range of 0.011 to 0.017, the chord center distance of the guide vane first decreases and then increases away from the side of the fixed hub, the ratio of the arc chord length of the guide vane to the diameter of the reinforcing ring is in the range of 0.09 to 0.11, and the arc chord length of the guide vane first increases, then decreases and then increases away from the side of the fixed hub.

[0008] Preferably, the reinforcing ring is carried on the mesh cover, and a plurality of first fixing holes and second fixing holes are uniformly arranged on the inner side of the reinforcing ring. The first fixing holes are provided with a cable tie to bind the reinforcing ring on the mesh cover, and the second fixing holes are provided with a fixing nut to clamp the reinforcing ring on the mesh cover.

[0009] Preferably, the fixed hub is a column with rounded corners, and a cavity is arranged in the fixed hub, the cavity penetrating through two end faces of the fixed hub, and the cavity is used for accommodating a junction box arranged at the center of the mesh cover.

[0010] Preferably, a plurality of limiting columns are uniformly arranged on the end face of the reinforcing ring, and two support ribs are arranged vertically on the mesh cover, each support rib is specifically a hard rod arranged in parallel and connected at the end, the end face of the reinforcing ring is attached to each support rib, each limiting column extends into the gap between two adjacent hard rods, the width of the limiting column is the same as the distance between the hard rods, so that the support rib clamps and fixes the limiting column, and an equal-height column is further arranged between each limiting column, the height of each equal-height column is the same as the height of the support rib, and when the reinforcing ring is connected to the mesh cover, the end face of the equal-height column abuts against the mesh cover, so that the reinforcing ring is arranged in parallel with the mesh cover.

[0011] Preferably, the reinforcing ring and the fixed hub are both provided with a wire passing groove at one end close to the mesh cover, and the line connecting the two wire passing grooves points to the center of the reinforcing ring.

[0012] Preferably, the reinforcing ring is provided with a limiting groove on the end face away from the mesh cover, and the limiting groove is provided with a fixed buckle for locking the relative position of the reinforcing ring and the mesh cover.

[0013] Preferably, a fan comprises the guide vane.

[0014] With respect to the above background technology, the guide vane comprises: a fixed hub, a plurality of guide vanes are arranged radially on the outer periphery of the fixed hub, each guide vane points to the axis of the fixed hub, and the included angles of adjacent guide vanes are the same, and each guide vane is connected to a reinforcing ring at one end away from the fixed hub, and the positions of the two ends of each guide vane are fixed, so that the guiding effect of the guide vane on the airflow is more stable, in addition, each guide vane is specifically an arc plate, that is, the two side walls of each guide vane are arc surfaces, and the airflow is guided through the arc surfaces, in addition, each guide vane further has a first torsion part and a second torsion part, the first torsion part and the second torsion part are distributed in sequence in the direction away from the fixed hub, and the chord tangent angle of the arc surface of the guide vane first decreases and then increases in the direction away from the fixed hub, that is, the chord tangent angle of the arc surface of the first torsion part gradually decreases, the chord tangent angle of the arc surface is the smallest at the intersection of the first torsion part and the second torsion part, and the chord tangent angle of the arc surface of the second torsion part gradually increases until the second torsion part is connected to the reinforcing ring, the first torsion part and the second torsion part make the guide vane have arc surfaces with different guiding directions, the airflow passing through different sections of the guide vane is guided to different directions, the mutual influence of the airflows at different positions is avoided to form turbulence, the blowing speed, range and scope of the airflow are reduced, in addition, the chord distance of the side wall of the guide vane and the chord length of the arc side wall are arranged in a certain proportion with the diameter of the reinforcing ring, and the chord distance of the guide vane and the chord length of the arc side wall are used to enhance the guiding effect of the guide vane. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the provided drawings without creative labor.

[0016] Figure 1 The guide vane structure diagram provided by the embodiment of the present application;

[0017] Figure 2 The side view of the A direction provided by the embodiment of the present application;

[0018] Figure 3 The structure diagram of the fan and the guide vane assembly provided by the embodiment of the present application;

[0019] Figure 4 The cross-sectional view of the guide vane B provided by the embodiment of the present application;

[0020] Figure 5 The cross-sectional view of the guide vane C provided by the embodiment of the present application;

[0021] Figure 6 The cross-sectional view of the guide vane D provided by the embodiment of the present application;

[0022] Figure 7 The cross-sectional view of the guide vane E provided by the embodiment of the present application;

[0023] Figure 8 The cross-sectional view of the guide vane F provided by the embodiment of the present application;

[0024] Figure 9 The cross-sectional view of the guide vane G provided by the embodiment of the present application;

[0025] Figure 10 The local side view of the Z direction provided by the embodiment of the present application.

[0026] Wherein: 1-fixed hub; 2-strengthening ring; 3-guide vane; 4-first fixed hole; 5-second fixed hole; 6-limiting column; 7-equal height column; 8-limiting groove; 9-threading groove; 10-supporting rib; 11-net cover; 12-fixed buckle. DETAILED DESCRIPTION

[0027] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative efforts under the premise that no creative efforts are made, belong to the scope of protection of the present application.

[0028] In order for those skilled in the art to better understand the technical scheme of the present application, the present application will be further described in detail below in combination with the drawings and specific embodiments.

[0029] The utility model provides a guide vane, please refer to the description attached Figure 1 to the attached Figure 3 , guide vane includes fixed hub 1, is connected with a plurality of guide blades 3 on fixed hub 1 outer wall, each guide blade 3 is with fixed hub 1 axis as center, is distributed radially, and the included angle between each adjacent guide blade 3 is equal, the end of guide blade 3 away from fixed hub 1 is connected on reinforcing ring 2, both ends of each guide blade 3 are fixed on fixed hub 1 and reinforcing ring 2 respectively, the setting state of guide blade 3 is determined, when airflow passes through guide blade 3, guide blade 3 will not be skewed or swing, guarantee the stability of guide vane to the guiding effect of airflow, further, the guiding effect of guide blade 3 to airflow is realized through the first torsion part and the second torsion part generated by its torsion, the first torsion part and the second torsion part are sequentially distributed along the direction away from fixed hub 1, please refer to the description attached Figure 4 , the tangent of guide blade 3 side wall arc end and the chord of arc side wall is chord cutting angle, the distance between the tangent of guide blade 3 arc side wall vertex and the chord is chord center distance, the chord cutting angle of guide blade 3 arc side wall gradually reduces and then gradually increases along the direction away from fixed hub 1, that is to say, the chord cutting angle of the first torsion part arc side wall gradually reduces in the direction away from fixed hub 1, and the chord cutting angle of the second torsion part arc side wall gradually increases from minimum to maximum, the maximum chord cutting angle of the second torsion part is connected with reinforcing ring 2, the chord cutting angle of the arc side wall of the connecting place of guide blade 3 and fixed hub 1 is still greater than the chord cutting angle of the arc side wall of the connecting place of guide blade 3 and reinforcing ring 2, in addition, the chord center distance and chord length of guide blade 3 arc side wall are set in a certain proportion with the diameter of reinforcing ring 2, the chord cutting angle, chord center distance and chord length jointly determine the shape of guide blade 3, airflow flows along the arc side wall when passing through guide blade 3, and is guided to the appropriate direction through the gradually changing chord cutting angle and chord length of guide blade 3, avoids the turbulence generated by the mutual influence of airflow, reduces the blowing speed, distance and range of airflow.

[0030] Please refer to the description attached Figure 1 to the attached Figure 9, six cross sections are taken on the guide vane 3 in the direction away from the fixed hub 1, and are denoted as cross section G to cross section B, wherein the cross section D is the separation cross section of the first torsion part and the second torsion part, the cross sections taken on the first torsion part are specifically cross section G to cross section D, the cross sections taken on the second torsion part are specifically cross section D to cross section B, the chord cutting angle of the arc-shaped side wall at the cross section D is about 13°, the cross section G is closest to the connection between the first torsion part and the fixed hub 1, and the distance is small, the chord cutting angle of the arc-shaped cross section at the cross section G is equivalent to the maximum chord cutting angle of the first torsion part, the chord cutting angle at the cross section G is about 29.5°, that is, the chord cutting angle of the arc-shaped side wall of the first torsion part gradually decreases from 29.5° to 13°, specifically, the chord cutting angle of the cross sections taken on the first torsion part is about 29.5°, 24°, 16° and 13° from the cross section G to the cross section D, and the minimum chord cutting angle of the arc-shaped side wall of the first torsion part is the same as that of the second torsion part, that is, the chord cutting angle of the second torsion part gradually increases from 13°, the cross section B is the cross section of the second torsion part closest to the reinforcing ring 2 among the taken cross sections, and the connection between the second torsion part and the reinforcing ring 2 is close to the cross section B, so the cross section B can be regarded as the maximum chord cutting angle of the arc-shaped side wall of the second torsion part, the chord cutting angle at the cross section B is about 18°, that is, the chord cutting angle of the arc-shaped side wall of the second torsion part gradually increases from 13° to 18° along the direction close to the reinforcing ring 2, specifically, the chord cutting angle of the cross sections taken on the second torsion part is about 13°, 14.5° and 18° from the cross section D to the cross section B, the arc-shaped side wall of each guide vane 3 has two torsion structures with opposite gradual change trends, when the airflow passes through the first torsion part and the second torsion part, the arc-shaped side wall of the guide vane 3 guides the airflow to flow along the side wall, the torsion directions of the different sections of the guide vane 3 are different, the airflow is divided into several airflows with different flow directions when passing through the guide vane 3, and the chord cutting angle of the gradual change of each torsion part ensures that each airflow after the division does not interfere, so as to avoid the mutual influence of the airflows to generate turbulence, so that the blowing range of the fan is short and the coverage is small.

[0031] Please continue to refer to the description accompanying Figure 4 to the accompanying drawings Figure 9, the chord distance of the arc-shaped side wall of the guide vane 3 gradually changes along the direction away from the fixed hub 1, and the chord distance of the arc-shaped side wall of the guide vane 3 and the diameter of the reinforcing ring 2 have a certain proportion, and the diameter of the reinforcing ring 2 is set as D, wherein the chord distance of the guide vane 3 gradually decreases and then increases along the direction away from the fixed hub 1, and the chord distance of the guide vane 3 at the section G is equivalent to the chord distance of the guide vane 3 at the connection position of the fixed hub 1, the chord distance of the guide vane 3 at the section G is the largest, and the chord distance is about 0.017D, the chord distance of the guide vane 3 gradually decreases along the direction away from the fixed hub 1, and decreases to the minimum at the section C, specifically, the chord distance of the guide vane 3 at the section G to the section C is about 0.0168D, 0.0164D, 0.0136D, 0.0116D, and 0.011D, respectively, and the chord distance of the guide vane 3 gradually increases at the section C to the section B, specifically, the chord distance of the guide vane 3 increases from 0.011D to 0.015D, the end of the guide vane 3 connected to the fixed hub 1 and the reinforcing ring 2 has a relatively large chord distance, so as to ensure the load strength of the guide vane 3, avoid the end of the guide vane 3 from being affected by the airflow and falling off from the fixed hub 1 or the reinforcing ring 2, and cause damage to the equipment.

[0032] Further, the arc chord length of the arc-shaped side wall of the guide vane 3 gradually changes along the direction away from the fixed hub 1, the arc chord length gradually increases from the section G to the section E, specifically, the arc chord length of each section is about 0.081D, 0.099D, and 0.102D, respectively, the arc chord length gradually decreases at the section E to the section C, specifically, the arc chord length of each section is about 1.02D, 0.099D, and 0.0982D, respectively, and finally, the arc chord length gradually increases again at the section C to the section B, specifically, the arc chord length of each section is 0.0982D and 0.0986D, respectively, the arc-shaped side wall of the guide vane 3 changes the arc chord length, so that the airflow at different positions is guided for different distances, and the chord angle and the arc chord length of the side wall of the guide vane 3 act on the airflow passing through the guide vane 3, so as to guide several airflow streams without interference, each airflow stream can maintain a high wind speed, and the blowing direction of the airflow guided by the guide vane 3 is more comprehensive, and the blowing area of the airflow is increased.

[0033] It should be noted that the reinforcing ring 2 is borne on the mesh cover 11 of the fan, the inner side of the reinforcing ring 2 is provided with a plurality of first fixing holes 4 and second fixing holes 5, the first fixing holes 4 and the second fixing holes 5 adopt different fixing modes, the first fixing holes 4 can be tied together with the mesh cover 11 through a flexible connecting belt such as a cable tie, the second fixing holes 5 are penetrated between the mesh cover 11 and the reinforcing ring 2 through a rigid connecting piece such as a fixing nut, the fixing nut can clamp and fix the mesh cover 11 and the reinforcing ring 2, in addition, a plurality of limiting columns 6 are also arranged on the end faces of the reinforcing ring 2 and the mesh cover 11, each limiting column 6 extends into the support rib 10 arranged on the mesh cover 11, the support rib 10 is specifically two, and each support rib 10 is vertically arranged, further, the support rib 10 is specifically two parallelly arranged hard rods connected at the ends, the width of the limiting column 6 is equal to the distance between the two hard rods, that is to say, after the limiting column 6 extends into the support rib 10, the limiting column 6 is clamped and fixed by the two hard rods, by arranging the limiting column 6, the reinforcing ring 2 is prevented from rotating around the axis of the mesh cover 11, a plurality of equal-height columns 7 are also arranged between each limiting column 6, the height of each equal-height column 7 is equal to the thickness of the support rib 10, that is to say, after the reinforcing ring 2 is installed on the mesh cover 11, the end face of the equal-height column 7 abuts against the mesh cover 11, so that the reinforcing ring 2 and the mesh cover 11 are arranged in parallel, the guide vane 3 in the reinforcing ring 2 has the same flow guiding effect, in addition, a limiting groove 8 is arranged on the end face of the reinforcing ring 2 away from the mesh cover 11, the limiting groove 8 is used for arranging a fixed buckle 12 for locking the relative position of the reinforcing ring 2 and the mesh cover 11.

[0034] Please refer to the drawings in the description Figure 1 and the drawings Figure 9 The fixed hub 1 is specifically provided with a fillet cylinder at the edge, the inner side of the cylinder is provided with a cavity penetrating through the end faces of the two sides of the cylinder, the cavity is used for accommodating a junction box arranged at the center of the mesh cover 11, in addition, the fixed hub 1 and the reinforcing ring 2 are provided with wire passing grooves 9 at the end close to the mesh cover 11, the connecting line of the two wire passing grooves 9 points to the center of the reinforcing ring 2, and the wire passing grooves 9 are used for penetrating circuit wires.

[0035] The utility model also provides a kind of fan, fan can be connected above-mentioned guide vane, fan generates airflow, is guided by guide vane, and the blowing range of fan is increased, and blowing distance is more far, and blowing speed is faster.

[0036] It should be noted that in the present specification, relational terms such as first and second are used solely to distinguish one entity from another without necessarily implying any actual relationship or order between such entities.

[0037] The principle and implementation mode of the present application are described by using specific examples in the present application, and the above examples are only used to help understand the method and core idea of the present application. It should be pointed out that, for ordinary skilled persons in the technical field, some improvements and modifications can be made to the present application without departing from the principle of the present application, and these improvements and modifications also fall within the protection scope of the present application.

Claims

1. A guide vane, characterized in that, The device includes a fixed hub (1), on which a plurality of guide vanes (3) are radially and evenly distributed around the outer periphery. The ends of each guide vane (3) are connected to a reinforcing ring (2). Each guide vane (3) is an arc plate. Each guide vane (3) has a first torsion part and a second torsion part. The first torsion part and the second torsion part are distributed sequentially in a direction away from the fixed hub (1). The tangential angle of the guide vane (3) first decreases and then increases in a direction away from the fixed hub (1). The diameter of the reinforcing ring (2) is set in a certain proportion to the arc chord length and the center distance of each guide vane (3). The first torsion part and the second torsion part are used to guide the airflow.

2. The guide vane according to claim 1, characterized in that, One end of the first torsion part is connected to the fixed hub (1). The tangential angle of the side wall of the first torsion part is between 13° and 29.5°. The tangential angle of the first torsion part decreases towards the side away from the fixed hub. The tangential angle of the side wall of the second torsion part is between 13° and 18°. The tangential angle of the second torsion part increases towards the side away from the fixed hub (1). One end of the second torsion part with the maximum tangential angle is connected to the reinforcing ring (2).

3. The guide vane according to claim 1, characterized in that, The ratio of the center distance of the guide vane (3) to the diameter of the reinforcing ring (2) ranges from 0.011 to 0.

017. The center distance of the guide vane (3) decreases first and then increases on the side away from the fixed hub (1). The ratio of the arc length of the guide vane (3) to the diameter of the reinforcing ring (2) ranges from 0.08 to 0.

11. The arc length of the guide vane (3) increases first, then decreases, and then increases again on the side away from the fixed hub (1).

4. The guide vane according to claim 3, characterized in that, The reinforcing ring (2) is supported on the mesh cover (11). The inner side of the reinforcing ring (2) is evenly provided with a number of first fixing holes (4) and second fixing holes (5). The first fixing hole (4) is provided with a cable tie to bind the reinforcing ring (2) on the mesh cover (11). The second fixing hole (5) is provided with a fixing nut to clamp the reinforcing ring (2) on the mesh cover (11).

5. The guide vane according to claim 4, characterized in that, The fixed hub (1) is a column with rounded corners. The fixed hub (1) has a cavity inside. The cavity passes through both end faces of the fixed hub (1). The cavity is used to accommodate the junction box located at the center of the mesh cover (11).

6. The guide vane according to claim 5, characterized in that, The reinforcing ring (2) is evenly provided with several limiting posts (6) on its end face. The mesh cover (11) is provided with two vertically arranged support ribs (10). Each support rib (10) is specifically two parallel rigid rods connected at their ends. The end face of the reinforcing ring (2) is in contact with each support rib (10). Each limiting post (6) extends into the gap between two adjacent rigid rods. The width of the limiting post (6) is the same as the spacing between the rigid rods, so that the support ribs (10) clamp and fix the limiting post (6). There are also equal height posts (7) between each limiting post (6). The height of each equal height post (7) is the same as the height of the support ribs (10). When the reinforcing ring (2) is connected to the mesh cover (11), the end face of the equal height post (7) abuts against the mesh cover (11), so that the reinforcing ring (2) and the mesh cover (11) are arranged in parallel.

7. The guide vane according to claim 6, characterized in that, Both the reinforcing ring (2) and the fixed hub (1) are provided with a wire groove (9) at one end near the mesh cover (11), and the line connecting the two wire grooves (9) points to the center of the reinforcing ring (2).

8. The guide vane according to claim 7, characterized in that, The reinforcing ring (2) has a limiting groove (8) on one end face away from the mesh cover (11). The limiting groove (8) is provided with a fixing buckle (12) for locking the relative position of the reinforcing ring (2) and the mesh cover (11).

9. A fan, characterized in that, Includes the guide vane as described in any one of claims 1-8.

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