CN108545172A

CN108545172A - A kind of air propeller

Info

Publication number: CN108545172A
Application number: CN201810615106.0A
Authority: CN
Inventors: 赵忠东
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-06-14
Filing date: 2018-06-14
Publication date: 2018-09-18

Abstract

The present invention proposes a kind of air propeller, including propeller hub and blade, the blade is divided into via area and seal area, the via area is equipped at least one airflow hole, air propeller proposed by the present invention can effectively reduce the flow-disturbing that blade back air-flow will produce when rotating speed increases, effectively improve the efficiency of propeller, reduce power consumption, and the working efficiency of propeller itself is not influenced, air-flow through-hole can effectively be reduced the flow-disturbing at back simultaneously, considerably increase the whole work efficiency of propeller, and material used is cheap, production cost can be substantially reduced, material is durable, service life also greatly increases.

Description

A kind of air propeller

Technical field

The present invention relates to field of engineering technology, and in particular to a kind of air propeller.

Background technology

In general, propeller be used in as aircraft, ship, turbine equipment in it is other similar with extensive various configuration Device, for transmitting power by converting rotational motion to thrust or fluid flowing, air propeller is by blade in sky Rotation converts mechanical energy in the device of propulsive force or lift in gas.

The blade that propeller is usually connected to newel or hub by two or more is constituted, and with blade bending, is turned round Bent or other deformations, generate pressure difference, to push fluid (such as water or air) to flow through between the forward and backward surface of blade Blade, shape, pitch and the distortion of blade are all factors of working efficiency of propeller.

And when propeller keeps certain screw pitch, because the propeller of fixed pitch can not change screw pitch to change The blade angle of attack cannot efficiently work under every speed state, and when rotating speed increases, blade back air-flow will produce flow-disturbing, and And drastically deteriorate, decline so as to cause efficiency, so constant pitch airscrew, in different rotating speeds, efficiency is difficult to take into account, not only significantly It reduces efficiency and also increases energy consumption, while decreasing service life, wherein Fig. 6 illustrates traditional propeller normal work When, the flow direction of air-flow, the flow-disturbing at blade back seriously affects the flowing of fluid.

Invention content

The present invention is at least one defect (deficiency) overcome described in the above-mentioned prior art, and providing a kind of can effectively reduce the back of the body Portion's flow-disturbing reduces energy consumption and carries efficient air propeller.

In order to solve the above technical problems, technical scheme is as follows：

A kind of air propeller, including propeller hub and blade, the blade are divided into via area and seal area, and the via area is set There are airflow hole, the airflow hole to be divided into import, outlet and gas channel, import is located at blade lower surface, and outlet is located on blade Surface, the airflow hole is at least one, the lower surface air-flow of blade can be taken to upper surface at runtime, to avoid in rotating speed Blade back air-flow will produce flow-disturbing when increase, and drastically deteriorate, and decline so as to cause efficiency.

Further, the airflow hole is several, be set to blade forward position backward 1/10 to rear between forward 1/10, pass through Via area is divided, airflow hole is concentrated in via area, the flow-disturbing at blade back effectively can be intensively reduced.

Further, the airflow hole is divided into import, gas channel and outlet according to the direction of air-flow, the gas channel The area summation of minimum cross-section accounts for the 1-20% of the upper and lower total surface area of blade, and the size of gas channel can effectively control gas The size of stream, air-flow pass through the speed of airflow hole, and when gas channel accounts for, blade area is excessive, can substantially reduce the effect of propeller Rate is not achieved and converts rotational motion to thrust or fluid flowing to transmit the effect of power, when gas channel accounts for blade area Too small, air-flow is difficult to pass through, and the effect for reducing back flow-disturbing is not achieved.

Further, the cross-sectional shape of gas channel is round or rectangular or irregular shape, can be carried out according to practical application Adjustment.

Further, the airflow hole is round or rectangular or irregular shape in the export and import shape of blade surface, into Mouthful can be modified according to practical situations with the shape exported, can use crack or trepanning or irregular shape.

Further, material used in the blade and propeller hub is metal or timber or plastics or composite material, entire propeller It is more robust, service life can be greatly improved.

Compared with prior art, the advantageous effect of technical solution of the present invention is：

(1) what air propeller proposed by the present invention can effectively reduce that the blade back air-flow when rotating speed increases will produce disturbs Stream, effectively improves the service efficiency of air propeller, improves the efficiency of propeller, reduces power consumption.

(2) cross-sectional area for the airflow hole being added due to the present invention accounts for the 1-20% of entire blade area, can't drop The low propeller working efficiency of itself, and air-flow through-hole can effectively greatly reduce the flow-disturbing at back, increase propeller Working efficiency.

(3) material used in the present invention is metal or timber or plastics or composite material, and material used is cheap, Production cost can be substantially reduced, and material is durable, service life also greatly increases.

Description of the drawings

Fig. 1 is air propeller region division structural schematic diagram.

Fig. 2 is air propeller structural schematic diagram.

Fig. 3 is blade section face figure.

Fig. 4 is airflow hole cross-sectional view.

Fig. 5 is 2 schematic diagram of embodiment.

Fig. 6 is traditional blade surface air-flow flow graph.

Fig. 7 the application blade surface air-flow flow graphs.

Specific implementation mode

The attached figures are only used for illustrative purposes and cannot be understood as limitating the patent；

In order to more preferably illustrate that the present embodiment, the certain components of attached drawing have omission, zoom in or out, actual product is not represented Size；

To those skilled in the art, it is to be appreciated that certain known features and its explanation, which may be omitted, in attached drawing 's.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation " " connects Connect " it shall be understood in a broad sense, for example, it may be being fixedly connected, it may be a detachable connection, or be integrally connected；It can be machine Tool connects, and can also be electrical connection；It can be directly connected, can also be to be indirectly connected with by intermediary, it may be said that two Connection inside element.For the ordinary skill in the art, above-mentioned term can be understood in the present invention with concrete condition Concrete meaning.

The following further describes the technical solution of the present invention with reference to the accompanying drawings and examples.

Embodiment 1

The present invention proposes a kind of air propeller, and as shown in Figs. 1-3, including propeller hub 1 and blade 2, wherein blade 2 are fixed At 1 both ends of propeller hub, it is equipped with two pieces of blades 1 altogether, the quantity and size of blade 1 can be adjusted, in blade according to the demand of practical application It is divided into two regions in 2, one is seal area 3, and one is via area 4, and wherein via area 4 is in 2 forward position of blade backward 1/10 It is lead and trail edge to two edges that between rear edge forward 1/10, i.e., blade is connect with propeller hub, via area 4 accounts for 4 area of blade Be 80%, be equipped with airflow hole 5 on via area 4, airflow hole 5 can Arbitrary distribution on via area, set via area 4, allow air-flow It is in order to allow the flow-disturbing at 2 back side of blade to get rid of that hole 5, which is concentrated, and flow-disturbing is also concentrated mainly on the back of the body of the via area 4 of blade 2 Face.

Airflow hole 5 includes import, gas channel and outlet, shape of the airflow hole 5 in the import and outlet on 2 surface of blade Round or rectangular or irregular shape is can be designed as, for example, the shape of blade 2 import of overdraught hole and outlet as shown in Figure 2 Shape is circle, has set 16 airflow holes 5 altogether.

It, can be according to actually answering in addition, the shape of the gas channel of airflow hole 5 may be round or rectangular or irregular shape It is adjusted with demand, as shown in Figure 3-4, the area summation of the minimum cross-section of the gas channel of all airflow holes 5 accounts for blade 2 The 1-20% of upper and lower total surface area can fast and effeciently remove flow-disturbing using such structure, can greatly increase propeller Working efficiency.

In addition to this, the material used in the entire propeller of the present invention is metal or timber or plastics or composite material, is applicable in In different occasions, it is widely used.

Embodiment 2

Embodiment 2 uses all technical features of embodiment 1, and difference lies in import of the airflow hole 5 on 2 surface of blade It is rectangle with the shape of outlet, a similar gap has set 4 airflow holes 5 altogether, can be with as shown in figure 5, in practical application The shape of import and the outlet of airflow hole 5 is adjusted according to demand.

As described in the prior art, when propeller works normally, by converting rotational motion to thrust or fluid stream It moves to transmit power, as shown in Figure 6, arrow is the flow direction of air-flow, and circular arrow is flow-disturbing, in no airflow hole 5 When, because the propeller of fixed pitch can not change screw pitch to change the blade angle of attack, the blade back air-flow meeting when rotating speed increases Flow-disturbing is generated, the air-flow separation blade surface both sticked, the pressure difference of blade upper and lower surface becomes smaller, and drastically deteriorates, to lead Efficiency is caused to decline.

And after airflow hole appropriate is added in the application, the case where this deterioration can be improved, air-flow separation in upper surface is made to prolong It is slow, the flow-disturbing at blade back is mitigated or reduced, the working efficiency of the propeller under different rotating speeds is improved, power consumption is reduced, such as Fig. 7 institutes Show.

It can could see from Fig. 6 and Fig. 7 comparisons, after airflow hole is added, not only can effectively inhibit flow-disturbing, prevent flow-disturbing from weakening Working efficiency, while flow-disturbing can be converted to the transmission power of rotary motion generation, increase working efficiency, kills two birds with one stone.

Entire air propeller can according to the actual application, to the shape of the quantity of blade, the size of blade or blade It adjusts.

Finally illustrate, the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although with reference to compared with Good embodiment describes the invention in detail, it will be understood by those of ordinary skill in the art that, it can be to the skill of the present invention Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this In the right of invention.

Claims

1. a kind of air propeller, which is characterized in that including propeller hub and blade, the blade is divided into via area and seal area, institute It states via area and is equipped at least one airflow hole.

2. air propeller according to claim 1, which is characterized in that the airflow hole is several, is set to blade forward position 1/10 between rear edge forward 1/10 backward.

3. air propeller according to claim 2, which is characterized in that the airflow hole according to the direction of air-flow be divided into Mouth, gas channel and outlet, the area summation of the minimum cross-section of the gas channel account for the 1- of the upper and lower total surface area of blade 20%.

4. air propeller according to claim 3, which is characterized in that the shape of the cross section of the gas channel is circle Or rectangular or irregular shape.

5. air propeller according to claim 3, which is characterized in that the entry shape of the airflow hole is round or rectangular Or irregular shape.

6. air propeller according to claim 3, which is characterized in that the outlet shapes of the airflow hole are round or rectangular Or irregular shape.

7. according to any one of the claim 1-6 air propellers, which is characterized in that material is used in the blade and propeller hub Metal or timber or plastics or composite material.