阅读说明：本技术 导流式轴流风轮及具有其的轴流风机 (Flow guide type axial flow wind wheel and axial flow fan with same ) 是由 程守炤 覃万翔 叶涛 王垚琦 于 2020-12-10 设计创作，主要内容包括：本发明公开了一种导流式轴流风轮及具有其的轴流风机,包括轮毂、导圈,所述轮毂、导圈之间设置有叶片；所述导圈为圆筒状结构,所述导圈上侧为进口,所述导圈下侧为出口；所述叶片包括有叶片前缘、叶片外缘、叶片尾缘,所述叶片外缘与所述导圈内壁连接,所述叶片外缘、所述叶片尾缘向上伸出所述导圈；通过改良后的叶片、导圈设计,可以消除轴流风轮原来的泄露流及叶尖涡,提高风轮的压升及静压效率,还起到了降低风扇噪音的效果。(The invention discloses a flow guide type axial flow wind wheel and an axial flow fan with the same, wherein the flow guide type axial flow wind wheel comprises a hub and a guide ring, and blades are arranged between the hub and the guide ring; the guide ring is of a cylindrical structure, the upper side of the guide ring is provided with an inlet, and the lower side of the guide ring is provided with an outlet; the blade comprises a blade front edge, a blade outer edge and a blade tail edge, the blade outer edge is connected with the inner wall of the guide ring, and the blade outer edge and the blade tail edge extend out of the guide ring upwards; through the design of the improved blades and the guide ring, the original leakage flow and tip vortex of the axial flow wind wheel can be eliminated, the pressure rise and static pressure efficiency of the wind wheel are improved, and the effect of reducing the noise of the fan is also achieved.)

1. A diversion type axial flow wind wheel is characterized in that: the novel hub comprises a hub (100) and a guide ring (300), wherein a blade (200) is arranged between the hub (100) and the guide ring (300);

the guide ring (300) is of a cylindrical structure, the upper side of the guide ring (300) is provided with an inlet, and the lower side of the guide ring (300) is provided with an outlet;

the blade (200) comprises a blade front edge (210), a blade outer edge (220) and a blade tail edge (230), the blade outer edge (220) is connected with the inner wall of the guide ring (300), and the blade outer edge (220) and the blade tail edge (230) extend out of the guide ring (300) upwards;

the diameter of the diversion type axial flow wind wheel is defined as D, the distance between the inlet of the guide ring (300) and the outlet of the guide ring (300) is L, the values of D and L meet, and L is more than or equal to 0.1D and less than or equal to 0.15D.

2. The flow-guiding axial-flow wind wheel of claim 1, wherein: the thickness of the guide ring (300) is defined as delta, and the value of delta satisfies that delta is more than or equal to 0.05D and less than or equal to 0.08D.

3. The flow-guiding axial-flow wind wheel of claim 1, wherein: and defining the distance H between the lowest point of the blade tail edge (230) and the outlet of the guide ring (300), wherein the value of H and L is satisfied, and H is more than or equal to 0.2L and less than or equal to 0.3L.

4. The flow-guiding axial-flow wind wheel of claim 1, wherein: an inner flow guide inclined plate (240) is arranged between the blade tail edge (230) and the guide ring (300).

5. An axial fan, characterized by comprising a flow-inducing axial wind wheel according to any of claims 1 to 4.

Technical Field

The invention relates to the technical field of axial flow fans, in particular to a diversion type axial flow wind wheel and an axial flow fan with the same.

Background

The axial flow fan blade has a very wide application in daily life, and the axial flow refers to airflow flowing in the same direction as the axis of the fan blade, such as an electric fan and an air conditioner outdoor unit, which are fans operating in an axial flow mode. The axial flow fan with the axial flow fan blades is usually used in occasions with higher flow requirements and lower pressure requirements, and is widely used in the field of air conditioners. When the wind wheel rotates, leakage flow and blade tip vortex are generated at the outer edge of the blade, and the pressure rise and the efficiency of the wind wheel are reduced.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides a diversion type axial flow wind wheel and an axial flow fan with the same.

The technical scheme adopted by the invention for solving the technical problems is as follows: the flow guide type axial flow wind wheel comprises a hub and a guide ring, wherein blades are arranged between the hub and the guide ring; the guide ring is of a cylindrical structure, the upper side of the guide ring is provided with an inlet, and the lower side of the guide ring is provided with an outlet; the blade comprises a blade front edge, a blade outer edge and a blade tail edge, the blade outer edge is connected with the inner wall of the guide ring, and the blade outer edge and the blade tail edge extend out of the guide ring upwards; the diameter of the diversion type axial flow wind wheel is defined as D, the distance between the inlet of the guide ring and the outlet of the guide ring is defined as L, the values of D and L meet, and L is more than or equal to 0.1D and less than or equal to 0.15D.

According to the flow guide type axial flow wind wheel provided by the invention, through the improved blade and guide ring design, the original leakage flow and tip vortex of the axial flow wind wheel can be eliminated, the pressure rise and static pressure efficiency of the wind wheel are improved, and the effect of reducing the noise of a fan is also achieved.

As some preferred embodiments of the invention, the thickness of the guide ring is defined as delta, and the value of delta satisfies that delta is more than or equal to 0.05D and less than or equal to 0.08D.

As some preferred embodiments of the invention, the distance between the lowest point of the blade trailing edge and the guide ring outlet is defined as H, the values of H and L meet, and H is more than or equal to 0.2L and less than or equal to 0.3L.

As some preferred embodiments of the invention, an inner flow guiding inclined plate is arranged between the tail edge of the vane and the guide ring.

An axial flow fan comprises the diversion type axial flow wind wheel.

According to the axial flow fan provided by the invention, by adopting the improved blade and guide ring design, the original leakage flow and tip vortex of the axial flow wind wheel can be eliminated, the pressure rise and static pressure efficiency of the wind wheel are improved, and the effect of reducing the noise of the fan is also achieved.

The invention has the beneficial effects that: through adopting blade, the guide ring design after the improvement, can eliminate axial compressor wind wheel original leakage flow and apex vortex, improve the pressure rise and the static pressure efficiency of wind wheel, still played the effect that reduces the fan noise.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a perspective view of the present invention;

fig. 2 is a schematic structural diagram of the present invention.

Reference numerals:

hub 100, blades 200, blade leading edges 210, blade outer edges 220, blade trailing edges 230, inner guide inclined plates 240 and guide rings 300.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. Rather, the invention can be practiced without these specific details, i.e., those skilled in the art can more effectively describe the nature of their work to others skilled in the art using the description and illustrations herein. It should be further noted that the terms "upper" and "lower" and the like used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component, and that simple, non-inventive adjustments to such directions by those skilled in the art should not be construed as techniques outside the scope of the present application. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

Fig. 1 is a perspective view of an embodiment of the present invention, and referring to fig. 1, an embodiment of the present invention provides a flow-guiding axial-flow wind turbine, including a hub 100 and a guide ring 300, and a blade 200 is disposed between the hub 100 and the guide ring 300.

Further, the guide ring 300 is a cylindrical structure, an inlet is formed at the upper side of the guide ring 300, and an outlet is formed at the lower side of the guide ring 300.

Still further, the vane 200 includes a vane leading edge 210, a vane outer edge 220, and a vane trailing edge 230, the vane outer edge 220 is connected to the inner wall of the guide ring 300, and the vane outer edge 220 and the vane trailing edge 230 extend upward out of the guide ring 300.

Still further, referring to fig. 2, a diameter of the flow-guiding axial-flow wind wheel is defined as D, where the diameter of the wind wheel refers to a diameter of a position of the blade 200 on the flow-guiding axial-flow wind wheel, a distance between an inlet of the guide ring 300 and an outlet of the guide ring 300 is L, values of D and L satisfy, and L is greater than or equal to 0.1D and less than or equal to 0.15D.

The improved design of the blades 200 and the guide ring 300 can eliminate the original leakage flow and tip vortex of the axial flow wind wheel, improve the pressure rise and static pressure efficiency of the wind wheel, and simultaneously eliminate the vortex flow and further play a role in reducing the noise of the fan.

An axial flow fan comprises the diversion type axial flow wind wheel.

The above-mentioned flow guiding type axial flow wind wheel and axial flow fan are only disclosed as preferred embodiments of the present invention, and are only used for illustrating the technical solutions of the present invention, not for limiting the same. It will be understood by those skilled in the art that the foregoing technical solutions may be modified or supplemented by the prior art, or some of the technical features may be replaced by equivalents; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Reference will now be made in detail to some embodiments, wherein "an embodiment" is referred to herein as a particular feature, structure, or characteristic that may be included in at least one implementation of the present application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Furthermore, the details representative of one or more embodiments are not necessarily indicative of any particular order, nor are they intended to be limiting.

In the embodiment 1, the thickness of the guide ring 300 is defined as delta, the value of delta is satisfied, delta is more than or equal to 0.05D and less than or equal to 0.08D, and the structural strength is ensured.

In embodiment 2, the distance between the lowest point of the blade trailing edge 230 and the outlet of the guide ring 300 is defined as H, the values of H and L are satisfied, H is not less than 0.2L and not more than 0.3L, which not only can reduce the loss of the airflow in the guide ring 300 along the way and improve the efficiency, but also can make the flow rate of the gas which just flows out of the blade trailing edge at the outlet of the blade trailing edge 230 near the guide ring 300 faster, so that when the gas flows into the next stage of grid, the gas can be sent out with enough kinetic energy, thereby avoiding the phenomena of backflow and wind dispersion caused by insufficient kinetic energy of the gas blocked by the grid in the prior art.

Embodiment 3, be provided with interior water conservancy diversion swash plate 240 between blade trailing edge 230 and the guide ring 300, further improve drainage effect, guarantee structural strength simultaneously.

In embodiment 4, the diameter of the flow guiding axial flow wind wheel is D, the distance between the inlet of the guide ring 300 and the outlet of the guide ring 300 is L, the thickness of the guide ring 300 is δ, the distance between the lowest point of the blade trailing edge 230 and the outlet of the guide ring 300 is H, L is 0.1D, δ is 0.05D, and H is 0.2L.

In embodiment 5, the diameter of the flow guiding axial flow wind wheel is D, the distance between the inlet of the guide ring 300 and the outlet of the guide ring 300 is L, the thickness of the guide ring 300 is δ, the distance between the lowest point of the blade trailing edge 230 and the outlet of the guide ring 300 is H, L is 0.12D, δ is 0.06D, and H is 0.25L.

In embodiment 6, the diameter of the flow guiding axial flow wind wheel is D, the distance between the inlet of the guide ring 300 and the outlet of the guide ring 300 is L, the thickness of the guide ring 300 is δ, the distance between the lowest point of the blade trailing edge 230 and the outlet of the guide ring 300 is H, L is 0.15D, δ is 0.08D, and H is 0.3L.

The present invention can be modified and adapted appropriately from the above-described embodiments, according to the principles described above. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention.