CN207975031U - Blade, blade structure and fan - Google Patents

Abstract

The utility model is related to fan blowing machinery fields, more particularly to blade, blade structure and fan.The corrugated surface for including multiple bellows segments is arranged in its suction surface of blade radially, and the radial direction is the direction from blade root to blade tip.Blade structure includes wheel hub and multiple above-mentioned blades, and wheel hub is in the center of blade structure, and all blades are set to by rotary shaft of the central shaft of the wheel hub on the wheel hub.Radially setting corrugated surface of the utility model in suction surface, when blade rotates, when air-flow flows through leaf blade suction surface, the presence of the trough of corrugated surface makes more air-flows accelerate, normal flow is kept at wave crest, to form flow velocity difference, the apparent wind speed of stereovision, the intensity for weakening wind is more suitable for the blowing demand of old man and infant.

Description

Blade, blade structure and fan

Technical field

The utility model is related to fan blowing machinery fields, more particularly to are used for the blade of machinery blowing, using the blade Blade structure and fan.

Background technology

Fan is the standing electrical equipment of summer air-supply drop heat, is suitable for various crowds, still, the outlet air of fan belongs to machine Tool wind, the leeward that runs at high speed sense is stronger, and to weakling or elderly and infant has a certain impact.

Utility model content

(1) technical problems to be solved

The purpose of this utility model is to provide blade, blade structure and fan, solves existing fan machinery blowing, and wind sense is strong The problem of.

(2) technical solution

In order to solve the above-mentioned technical problem, the utility model provides a kind of blade, and suction surface is arranged radially includes The corrugated surface of multiple bellows segments, the radial direction are the direction from blade root to blade tip.

In some embodiments, preferably, the number range of the bellows segment is 1~50.

In some embodiments, preferably, two neighboring bellows segment distance is 1 millimeter~50 millimeters.

In some embodiments, preferably, wave crest and the trough distance of each bellows segment are 0.1 millimeter~1 millimeter.

In some embodiments, preferably, the airfoil structure of the blade includes circular arc, straight line or curve.

In some embodiments, preferably, the leading edge of the suction surface and the thickness of rear are equal；

The leading edge and rear of the suction surface are respectively provided with the plane of predetermined width, and the plane is with corrugated surface in circumferential mistake The mode of crossing is：Plane-wave crest starting point-trough starting point；

It is concave structure between the up-front plane and the plane of rear of the suction surface.

In some embodiments, preferably, the corrugated surface is set in the concave structure.

In some embodiments, preferably, the setting in radial directions of pressure face includes the ripple of multiple bellows segments Face.

The utility model additionally provides a kind of blade structure comprising wheel hub and multiple blades, the wheel hub In the center of the blade structure, all blades are set to by rotary shaft of the central shaft of the wheel hub on the wheel hub.

The utility model additionally provides a kind of fan comprising the blade structure.

(3) advantageous effect

Technical solution provided by the utility model suction surface radially setting corrugated surface, when blade rotates, air-flow When flowing through leaf blade suction surface, the presence of the trough of corrugated surface makes more air-flows accelerate, and normal stream is kept at wave crest Speed reduces the energy that each whirlpool is contained, and to reduce the vortex noise of fan blade, while making air-flow at entrance and exit more Have a sense of hierarchy, weaken the intensity of wind, greatly improve the experience of wind sense, is more suitable for the blowing demand of old man and infant.

Moreover, radial setting corrugated surface, caters to wind direction, and do speed change improvement to air-flow, blade is subtracted by the impact of air-flow Weak, the intensity of blade is equivalent to enhancing, moreover, the consumptive material of blade is reduced, cost reduction.Corrugated surface makes the sound product of fan blade simultaneously Matter improves, and can also reduce the cost of fan blade.

Description of the drawings

Fig. 1 is the structural schematic diagram that suction surface shows blade and wheel hub under angle in the utility model one embodiment；

Fig. 2 is the structural schematic diagram that pressure face shows blade and wheel hub under angle in the utility model one embodiment；

Fig. 3 is the Local map of blade part ripple；

Fig. 4 is the cross-section diagram of Fig. 3；

Fig. 5 is fan blade sectional side view；

Fig. 6 is the schematic enlarged-scale view in Fig. 5 circles.

Specific implementation mode

With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below Example is not intended to limit the scope of the present invention for illustrating the utility model.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, can also be electrical connection；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements." first " " second " " third " " the 4th " does not represent any sequence relation, be only for The differentiation for facilitating description to carry out.For the ordinary skill in the art, it can understand that above-mentioned term exists with concrete condition Concrete meaning in the utility model.At the time of " current " is when executing certain action, occur multiple current in text, is at any time Between pass in record in real time.

It is dried based on existing fan machinery, the strong problem of wind sense, the utility model gives the blade structure of blade, and Fan.

Product, method etc. will be described in detail by basic engineering, extension design and alternative design below.

The utility model provides a kind of blade, and as shown in figures 1 to 6, it includes multiple waves that suction surface is arranged in radial directions The corrugated surface of line section, radial direction are the direction from blade root to blade tip.

The one side of blade is suction surface, and another side is pressure face, suction surface, also referred to as air draught face or windward side, spindle stream wind The front of the blade of fan is used for suction airflow；Pressure face is also referred to as leeward, and the back side of the blade of spindle flow fan is used as to gas Stream applies pressure, and air-flow is flowed out.Multiple bellows segments are formed on corrugated surface, improve the thickness of blade by multiple bellows segments, When fan blade rotates, air-flow flows through blade suction surface, since the presence of corrugated surface trough makes more air-flows thus enter and add Speed, and the air-flow that wave crest enters is less, the air-flow flowing of generation becomes discontinuous, has stereovision.And air-supply noise is reduced, Improve the sound quality of fan.

For the ease of processing, multilayer corrugated face preferably uses identical Wave crest and wave trough spacing and identical trough height, To be formed in being uniformly distributed on suction surface.But distribution mode heterogeneous can also be used in other examples, To obtain the effect of more hierarchies, wind speed variation range bigger.

The number of bellows segment can as needed depending on, as shown in figure 4, setting range can control between 1~50, Preferably 9 in this technology.Meanwhile two neighboring bellows segment distance a controls are between 1 millimeter~50 millimeters.Each bellows segment Wave crest and trough distance c are 0.1 millimeter~1 millimeter.Bellows segment wave crest and trough are better apart from bigger.

The airfoil structure of blade can be circular arc, straight line or curve, it can be understood as, as long as blade is provided with this technology Corrugated surface then belongs to the protection domain of this technology.

As shown in Figure 5,6, the suction surface of fan blade is set as plane 10, leading edge, the plane of rear in leading edge and posterior border position 10 thickness are equal, form transition between up-front plane and corrugated surface, transition, mistake are also formed between the plane and corrugated surface of rear The mode crossed is：The leading edge and rear of suction surface are respectively provided with the plane of predetermined width, and plane, which is transitioned into, is initially formed wave crest, then again Construct trough, as shown in Figure 1, i.e. wave crest starting point 6 and 9 apart from leading edge, the distance of rear be less than trough starting point 7 and 8 away from With a distance from leading edge, rear.Wherein, for the blade of stock size, in the circumferential, preferably：Blade inlet edge and rear plane 2 millimeters of thickness, wave crest starting point are 0.2 millimeter at a distance from trough starting point, and wave peak width is 0.2 millimeter, to ensure ripple The appearance in face.It certainly in other examples, can be between leading edge, the plane of rear and the corrugated surface of intermediate region Using surface blending.

It is concave structure between the up-front plane 10 and the plane of rear of suction surface, ripple is formed in the concave structure Face.

In addition, corrugated surface can also be arranged in addition to the radial direction setting in suction surface, can equally form level in the circumferential The wind sense of property.But radial setting it is relatively circumferentially disposed for, it is radial closer in the guiding and acceleration direction of wind, will not lose Air quantity, effect are more preferable with respect to for circumferential direction.

On the other hand, corrugated surface can also be arranged in pressure face windward, but blade face appearance is less attractive.

The blade that this technology provides enables to the air-flow of entrance to be divided into several layers of air-flows acceleration, is vortexed by an original big whirlpool Being separated into several small whirlpools, (common blade is the arcuate structure of medial recess, and the wave of multiple bellows segments is arranged in this technology intermediate recess Line face), the energy that each whirlpool is contained is reduced, to reduce the vortex noise of fan blade, while making the gas at entrance and exit Stream more has a sense of hierarchy, and greatly improves the experience of wind sense, while the presence of corrugated surface strengthens the intensity of blade and makes fan blade Sound quality improves, and can also reduce the cost of fan blade.

The utility model additionally provides a kind of blade structure comprising wheel hub 1 and multiple above-mentioned blades 2, wheel hub 1 are in The center of blade structure, all blades 2 are set to centered on the rotation center of wheel hub on wheel hub.Blade 2 can be equidistant point Cloth can not also be equally spaced.

The utility model additionally provides a kind of fan comprising above-mentioned blade structure.Under same speed conditions, this technology Fan complete machine is with complete machine noise under air quantity than original double-deck fan blade lower noise 0.5db~2db, specific promotion effect and blade The Wave crest and wave trough axial line distance of number, outer diameter and vane airfoil profile, the number of corrugated surface and corrugated surface is related.While the invention When the polishing injection molding of fan blade height, when fan blade is transparent color, the presence of corrugated surface can be seen from far away, and the market for increasing fan is welcome Degree.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model Protection domain within.

Claims (10)

1. a kind of blade, which is characterized in that the corrugated surface for including multiple bellows segments, the radial direction is arranged in its suction surface radially For the direction from blade root to blade tip.

2. blade as described in claim 1, which is characterized in that the number range of the bellows segment is 1~50.

3. blade as claimed in claim 2, which is characterized in that two neighboring bellows segment distance is 1 millimeter~50 millimeters.

4. blade as claimed in claim 3, which is characterized in that the wave crest and trough distance of each bellows segment are 0.1 millimeter~1 Millimeter.

5. blade as described in claim 1, which is characterized in that the airfoil structure of the blade includes circular arc, straight line or curve.

6. blade as described in claim 1, which is characterized in that the leading edge of the suction surface and the thickness of rear are equal；

The leading edge and rear of the suction surface are respectively provided with the plane of predetermined width, and the plane is with corrugated surface in circumferential transition side Formula is：Plane-wave crest starting point-trough starting point；

It is concave structure between the up-front plane and the plane of rear of the suction surface.

7. blade as claimed in claim 6, which is characterized in that the corrugated surface is arranged in the concave structure.

8. such as claim 1-7 any one of them blades, which is characterized in that the setting in radial directions of its pressure face includes The corrugated surface of multiple bellows segments.

9. a kind of blade structure, which is characterized in that described including wheel hub and multiple claim 1-8 any one of them blades Wheel hub is in the center of the blade structure, and all blades are set to the wheel by rotary shaft of the central shaft of the wheel hub On hub.

10. a kind of fan, which is characterized in that including the blade structure described in claim 9.