CN108087333A - Axial-flow windwheel and air conditioner - Google Patents

Axial-flow windwheel and air conditioner Download PDF

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Publication number
CN108087333A
CN108087333A CN201711315788.5A CN201711315788A CN108087333A CN 108087333 A CN108087333 A CN 108087333A CN 201711315788 A CN201711315788 A CN 201711315788A CN 108087333 A CN108087333 A CN 108087333A
Authority
CN
China
Prior art keywords
fan blade
axial
water conservancy
conservancy diversion
flow windwheel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201711315788.5A
Other languages
Chinese (zh)
Inventor
黄愉太
蔡序杰
宋英杰
王波
周何杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Midea Group Co Ltd
GD Midea Air Conditioning Equipment Co Ltd
Original Assignee
Midea Group Co Ltd
Guangdong Midea Refrigeration Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Midea Group Co Ltd, Guangdong Midea Refrigeration Equipment Co Ltd filed Critical Midea Group Co Ltd
Priority to CN201711315788.5A priority Critical patent/CN108087333A/en
Publication of CN108087333A publication Critical patent/CN108087333A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00Pumping installations or systems
    • F04D25/02Units comprising pumps and their driving means
    • F04D25/08Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/26Rotors specially for elastic fluids
    • F04D29/32Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38Blades
    • F04D29/384Blades characterised by form
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/26Rotors specially for elastic fluids
    • F04D29/32Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38Blades
    • F04D29/388Blades characterised by construction
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/66Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/68Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
    • F04D29/681Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps

Abstract

The present invention discloses a kind of axial-flow windwheel and air conditioner, the axial-flow windwheel includes wheel hub and first group of fan blade and second group of fan blade on the wheel hub, first group of fan blade includes multiple smooth fan blades, second group of fan blade includes multiple water conservancy diversion fan blades, the multiple smooth fan blade is arranged at intervals with the multiple water conservancy diversion fan blade, each water conservancy diversion fan blade has preceding leaf margin and rear leaf margin, the water conservancy diversion fan blade is equipped with multiple diversion trenches that the rear leaf margin is extended to from the preceding leaf margin, and the multiple diversion trench is arranged along the spaced radial of the axial-flow windwheel.The axial-flow windwheel of the present invention, reduces the air quantity along the axial-flow windwheel Radial Flow, to reduce the wind loss of the axial-flow windwheel, and then improves the efficiency of the axial-flow windwheel.

Description

Axial-flow windwheel and air conditioner
Technical field
The present invention relates to air conditioner technical field, more particularly to a kind of axial-flow windwheel and air conditioner.
Background technology
Axial-flow windwheel is because with the features such as simple in structure, small, being widely used in household electrical appliance and air-conditioning equipment It is used to serve as compound ventilation air-changing device.When axial-flow windwheel works, the air in its circumferential direction is driven to rotate to form air-flow, and drive and be somebody's turn to do Air-flow is blown out along the axial direction of axial-flow windwheel.But the blade of conventional axial-flow windwheel is relatively smooth, fraction is in centrifugal action Water conservancy diversion fan blade Radial Flow is carried under power, so as to cause the wind loss of axial-flow windwheel, so as to reduce the efficiency of the axial-flow windwheel.
The content of the invention
The main object of the present invention is to propose a kind of axial-flow windwheel, it is intended to reduce the wind along the axial-flow windwheel Radial Flow Amount, to reduce the wind loss of the axial-flow windwheel, and then improves the efficiency of the axial-flow windwheel.
To achieve the above object, the present invention proposes a kind of axial-flow windwheel and includes the air conditioner of the axial-flow windwheel, institute State axial-flow windwheel includes including wheel hub and first group of fan blade and second group of fan blade on the wheel hub, first group of fan blade Multiple smooth fan blades, second group of fan blade include multiple water conservancy diversion fan blades, the multiple smooth fan blade and the multiple water conservancy diversion wind Interlobar septum is set, and each water conservancy diversion fan blade has preceding leaf margin and rear leaf margin, and the water conservancy diversion fan blade is equipped with multiple from the frontal lobe Edge extends to the diversion trench of the rear leaf margin, and the multiple diversion trench is arranged along the spaced radial of the axial-flow windwheel.
Preferably, the quantity of the smooth fan blade is equal with the quantity of the water conservancy diversion fan blade, the multiple smooth fan blade and Alternate intervals are set the multiple water conservancy diversion fan blade successively.
Preferably, the quantity of the smooth fan blade is odd number;And/or the quantity of the water conservancy diversion fan blade is odd number.
Preferably, the depth of the diversion trench is set from the preceding leaf margin to the rear leaf margin in gradually increase.
Preferably, the preceding leaf margin is set in smooth arc line shaped.
Preferably, the water conservancy diversion fan blade is set in wavy complications, and the trough on the water conservancy diversion fan blade forms the water conservancy diversion Slot.
Preferably, on the water conservancy diversion fan blade arbitrary neighborhood peaks and troughs, the extending direction of the wave crest and the trough Angle formed by extending direction is α, α ∈ [0.5 °, 5 °].
Preferably, the water conservancy diversion fan blade includes the blade root of the neighbouring wheel hub and is extended outward from the blade root Leaf central part and from the top of the outwardly extending leaf of the leaf central part, the multiple diversion trench is arranged on the blade root;It is or described Multiple diversion trenches are arranged on the leaf central part;Or the multiple diversion trench is arranged at the top of the leaf.
Preferably, the outer end of the rear leaf margin is recessed with forward recessed portion.
Technical scheme sets first group of fan blade and second group of fan blade on the wheel hub of the axial-flow windwheel, should First group of fan blade includes multiple smooth fan blades, which includes multiple water conservancy diversion fan blades, the multiple smooth fan blade and institute Multiple water conservancy diversion fan blades are stated to be arranged at intervals;Each water conservancy diversion fan blade is equipped with multiple extends to leading for leaf margin thereafter from its preceding leaf margin Chute, the multiple diversion trench are arranged along the spaced radial of the axial-flow windwheel.When the axial-flow windwheel works, to utilize Extreme portions air-flow is refined into multiply little airflow by multiple diversion trenches on the water conservancy diversion fan blade of one group of fan blade, and per share little airflow will The extending direction flowing of corresponding diversion trench is carried over, i.e., along the circumferential flow of the axial-flow windwheel.
It can be seen that the axial-flow windwheel of the present invention, multiply edge is refined into using the water conservancy diversion fan blade of first group of fan blade by air-flow The little airflow of the circumferential flow of the axial-flow windwheel, on the one hand may be such that along the air-flow of the axial-flow windwheel Radial Flow and is almost Zero, so as to reduce the air quantity along the axial-flow windwheel radial direction, wind loss is avoided, is axially blown out so as to increase the axial-flow windwheel Air quantity, and then reduce the power of the axial-flow windwheel.On the other hand, the air-flow gone out through second group of fan blade water conservancy diversion is refined into more The more soft little airflow of stock, it is smaller to the impact force of second group of fan blade when which flows to second group of fan blade, It so can also reduce the vibration of first group of fan blade, second group of fan blade can be also avoided by air-flow Pressing Deformation, to extend the axis stream The service life of wind wheel.In another aspect, through second group of fan blade water conservancy diversion by air-flow with through second group of fan blade water conservancy diversion by air-flow, Frequency is also different, so that the outlet air frequency of the axial-flow windwheel reduces, frequency spectrum broadens, and achievees the effect that reduce noise.
Description of the drawings
It in order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with Structure according to these attached drawings obtains other attached drawings.
Fig. 1 is the structure diagram of axial-flow windwheel first embodiment of the present invention;
Fig. 2 is the structure diagram of axial-flow windwheel second embodiment of the present invention;
Fig. 3 is the structure diagram of axial-flow windwheel 3rd embodiment of the present invention;
Fig. 4 is the structure diagram of axial-flow windwheel fourth embodiment of the present invention;
Fig. 5 is the structure diagram of the 5th embodiment of axial-flow windwheel of the present invention;
Fig. 6 is the enlarged drawing at A in Fig. 5;
Fig. 7 is the part-structure schematic diagram of Fig. 5 Axial-Flow wind wheels;
Fig. 8 is along the sectional view of I-I lines in Fig. 7;
Fig. 9 is along II-II lines and the comparison diagram of III-III line section view effects in Fig. 7.
Drawing reference numeral explanation:
Label Title Label Title
100 Wheel hub 203 Outer leaf margin
200 Water conservancy diversion fan blade 300 Smooth fan blade
210 Blade root 10 Diversion trench
220 Leaf central part 20 Wave crest
230 At the top of leaf 30 Trough
201 Preceding leaf margin 40 Recessed portion
202 Leaf margin afterwards
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only the part of the embodiment of the present invention, instead of all the embodiments.Base Embodiment in the present invention, those of ordinary skill in the art obtained without creative efforts it is all its His embodiment, belongs to the scope of protection of the invention.
If it is to be appreciated that related in the embodiment of the present invention directionality instruction (such as up, down, left, right, before and after ...), Then directionality instruction be only used for explaining relative position relation under a certain particular pose (as shown in drawings) between each component, Motion conditions etc., if the particular pose changes, directionality instruction also correspondingly changes correspondingly.
If in addition, relating to the description of " first ", " second " etc. in the embodiment of the present invention, " first ", " second " etc. are somebody's turn to do Description be only used for description purpose, and it is not intended that instruction or implying its relative importance or implicit indicating indicated skill The quantity of art feature." first " is defined as a result, and the feature of " second " can be expressed or implicitly includes at least one spy Sign.In addition, the technical solution between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy Based on enough realizations, the knot of this technical solution is will be understood that when the combination appearance of technical solution is conflicting or can not realize Conjunction is not present, also not the present invention claims protection domain within.
The present invention, which provides a kind of axial-flow windwheel and air conditioner, the axial-flow windwheel, can reduce along the axial-flow windwheel radial flow Dynamic air quantity to reduce the wind loss of the axial-flow windwheel, and then reduces the power of the axial-flow windwheel.In the present embodiment, The axial-flow windwheel is installed in air conditioner, and the air conditioner can be window air conditioner or split air conditioner.Wherein, if air-conditioning Device is window air conditioner, then the axial-flow windwheel is arranged on the outside of the window air conditioner;If air conditioner is split air conditioner, Then the axial-flow windwheel is arranged on the outdoor unit of the split air conditioner.Certainly, in other embodiments, which can also pacify In fan, wind turbine.
Referring to Fig. 1, in the first embodiment of axial-flow windwheel of the present invention, which includes wheel hub 100 and is arranged on First group of fan blade and second group of fan blade on wheel hub 100, first group of fan blade include multiple smooth fan blades 300, described second Group fan blade includes multiple water conservancy diversion fan blades 200, and the multiple smooth fan blade 300 is arranged at intervals with the multiple water conservancy diversion fan blade 200, often One water conservancy diversion fan blade 200 has preceding leaf margin 201 and rear leaf margin 202, and water conservancy diversion fan blade 200 is equipped with multiple from after extending to preceding leaf margin 201 The diversion trench 10 of leaf margin 202, the multiple diversion trench 10 are arranged along the spaced radial of the axial-flow windwheel.
Specifically, wheel hub 100 with driving motor to be connected, multiple water conservancy diversion fan blades 200 and multiple 300 edges of smooth fan blade The outer shroud week of wheel hub 100 is uniform and is arranged at intervals, and wheel hub 100 is rotated by the driving motor, and drives this two groups of wind Leaf rotates, which drives the air-flow in circumferential direction to rotate in this rotary course, and swirling eddy is along the axis stream wind Wheel it is axial to outdoor blowout.Water conservancy diversion fan blade 200 also has the outer leaf margin for connecting preceding 201 outer end of leaf margin and rear 202 outer end of leaf margin 203, diversion trench 10 is arc-shaped to extend to rear leaf margin 202, and the arc extending direction of diversion trench 10 and outer leaf margin from preceding leaf margin 201 203 arc extending direction is parallel.And herein it should be noted that when being rotated with the axial-flow windwheel, before the upstream of air-flow is, gas After the downstream of stream is, therefore the preceding leaf margin 201 of water conservancy diversion fan blade 200 is located relatively at the upstream of air-flow, the rear leaf margin of water conservancy diversion fan blade 200 202 are located relatively at the downstream of air-flow.
In conventional axial-flow windwheel, only with one group of smooth fan blade 300, when the axial-flow windwheel works, this group of light Sliding fan blade 300 drives circumferential flow of the fraction along the axial-flow windwheel, and another part air-flow is in operating on centrifugal force lower edge institute The Radial Flow of axial-flow windwheel is stated, which causes larger wind loss, is axially blown so as to reduce the axial-flow windwheel The air quantity gone out, and then cause the power of the axial-flow windwheel higher.
And in the axial-flow windwheel of the present invention, as shown in Figure 1, due to having additional second group of fan blade, second group of fan blade is more A water conservancy diversion fan blade 200 sets multiple diversion trenches 10 that rear leaf margin 202 is extended to from preceding leaf margin 201 on each water conservancy diversion fan blade 200, The multiple diversion trench 10 is arranged along the spaced radial of the axial-flow windwheel, with when the axial-flow windwheel works, using described Extreme portions air-flow is refined into multiply little airflow by multiple diversion trenches 10, and per share little airflow will carry over prolonging for corresponding diversion trench 10 Stretch direction flowing, i.e., it is almost nil along the air-flow of the axial-flow windwheel Radial Flow along the circumferential flow of the axial-flow windwheel, from And reduce the air quantity along the axial-flow windwheel radial direction, wind loss is avoided, so as to increase the wind that the axial-flow windwheel is axially blown out Amount, and then reduce the power of the axial-flow windwheel.
Furthermore since first group of fan blade and second group of fan blade are arranged at intervals, on the one hand, in the axial-flow windwheel During work, the vibration frequency of first group of fan blade and second group of fan blade is different so that passes through through second group of fan blade water conservancy diversion Air-flow with through second group of fan blade water conservancy diversion by air-flow, frequency is also different, two air-flows mixing after, frequency reduce, frequency spectrum become Width, achieve the purpose that reconcile the axial-flow windwheel outlet air frequency and reduce the effect of noise.On the other hand, through second group of fan blade The air-flow that water conservancy diversion goes out is refined into the more soft little airflow of multiply, when which flows to second group of fan blade, to described The impact force of second group of fan blade is smaller, so can also reduce the vibration of first group of fan blade, can also avoid second group of fan blade by air-flow Pressing Deformation, to extend the service life of the axial-flow windwheel.
Herein it should be noted that multiple smooth fan blades 300 of first group of fan blade and second group of fan blade it is multiple Water conservancy diversion fan blade 200 alternate intervals can arrange successively, can also be arranged at intervals that there are two water conservancy diversion fan blades between two smooth fan blades 300 200, also or it is to be arranged at intervals with two smooth fan blades 300 between two water conservancy diversion fan blades 200, does not set concrete restriction herein.
Technical scheme sets first group of fan blade and second group of fan blade on the wheel hub 100 of the axial-flow windwheel, First group of fan blade includes multiple smooth fan blades 300, which includes multiple water conservancy diversion fan blades 200, the multiple smooth Fan blade 300 is arranged at intervals with the multiple water conservancy diversion fan blade 200;Each water conservancy diversion fan blade 200 is equipped with multiple to be prolonged from its preceding leaf margin 201 The diversion trench 10 of leaf margin 202 thereafter is extended, the multiple diversion trench 10 is arranged along the spaced radial of the axial-flow windwheel.With institute It is using multiple diversion trenches 10 on the water conservancy diversion fan blade 200 of first group of fan blade, extreme portions air-flow is thin when stating axial-flow windwheel work Multiply little airflow is melted into, per share little airflow flows the extending direction for carrying over corresponding diversion trench 10, i.e., along the axial-flow windwheel Circumferential flow.
It can be seen that the axial-flow windwheel of the present invention, multiply is refined into using the water conservancy diversion fan blade 200 of first group of fan blade by air-flow Along the little airflow of the circumferential flow of the axial-flow windwheel, on the one hand may be such that along the axial-flow windwheel Radial Flow air-flow almost It is zero, so as to reduce the air quantity along the axial-flow windwheel radial direction, avoids wind loss, axially blown so as to increase the axial-flow windwheel The air quantity gone out, and then reduce the power of the axial-flow windwheel.On the other hand, the air-flow gone out through second group of fan blade water conservancy diversion is refined into The more soft little airflow of multiply, when which flows to second group of fan blade, to the impact force of second group of fan blade compared with It is small, it so can also reduce the vibration of first group of fan blade, second group of fan blade can be also avoided by air-flow Pressing Deformation, to extend the axis Flow the service life of wind wheel.In another aspect, through second group of fan blade water conservancy diversion by air-flow with through second group of fan blade water conservancy diversion by air-flow, Its frequency is also different, after the mixing of two air-flows, frequency reduces, and frequency spectrum broadens, and reaches and reconciles the outlet air frequency of the axial-flow windwheel Purpose and the effect for reducing noise.
Referring to Fig. 1, in the present embodiment, in order to make first group of fan blade and second group of fan blade preferably reconciles gas Stream, reaches preferable noise reduction, it is preferable that the quantity of smooth fan blade 300 is equal with the quantity of water conservancy diversion fan blade 200, described more Alternate intervals are set successively for a smooth fan blade 300 and the multiple water conservancy diversion fan blade 200.That is, smooth fan blade 300 and water conservancy diversion The quantity summation of fan blade 200 is even number, such as 4,6 or 8,10.
Specifically, the quantity of smooth fan blade 300 and the quantity of water conservancy diversion fan blade 200 are two, two smooth 300 Hes of fan blade Alternate intervals are arranged in the outer shroud week of wheel hub 100 to two water conservancy diversion fan blades 200 successively, and are symmetrical set, and each smooth fan blade 300 is roughly the same with 200 size of water conservancy diversion fan blade, so that the axial-flow windwheel generates the wind regime of uniform stabilization.
Herein it is noted that the fan blade of conventional axial-flow windwheel is smooth fan blade, when the quantity of its fan blade is even number When a, resonance will be generated between smooth fan blade, this will cause noise to greatly increase.And the axial-flow windwheel in the present invention has Smooth fan blade 300 and water conservancy diversion fan blade 200, the vibration frequency that both this generates is different, by smooth fan blade 300 and water conservancy diversion fan blade After 200 reconcile, noise is significantly reduced, therefore even if the quantity summation of smooth fan blade 300 and water conservancy diversion fan blade 200 is even number, While larger air quantity can be obtained, larger noise will not be generated.
Further, to avoid generating resonance between multiple smooth fan blades 300 of first group of fan blade, smooth fan blade 300 Quantity is odd number, such as 3 or 5.And/or it for multiple water conservancy diversion fan blades 200 of second group of fan blade is avoided to generate resonance, leads The quantity of fan blade 200 is flowed for odd number, such as 3 or 5.
It please refers to Fig.1 to Fig.4, here, water conservancy diversion fan blade 200 can set the multiple diversion trench 10 in its local location, with Water conservancy diversion is carried out to the air-flow of 200 different position of water conservancy diversion fan blade:The blade root 210 of water conservancy diversion fan blade 200 including adjacent hub 100 and The leaf central part 220 that is extended outward from blade root 210 and from the top of 220 outwardly extending leaf of leaf central part 230, it is the multiple Diversion trench 10 is arranged on blade root 210 (such as Fig. 1);Or the multiple diversion trench 10 is arranged on leaf central part 220 (such as Fig. 2);It is or described Multiple diversion trenches 10 are arranged on 230 (such as Fig. 3) at the top of leaf.Obviously, water conservancy diversion fan blade 200 also can integrally be respectively provided with the multiple diversion trench 10 (such as Fig. 4), so that water conservancy diversion fan blade 200 can carry out water conservancy diversion to the whole air-flows for flowing through 200 blade face of water conservancy diversion fan blade.
For ease of illustrating, define herein:The multiple diversion trench 10 is arranged on to the water conservancy diversion fan blade 200 of blade root 210 For first kind water conservancy diversion fan blade, the axial-flow windwheel for including the first kind water conservancy diversion fan blade is first kind axial-flow windwheel;It will be described more A diversion trench 10 is arranged on the water conservancy diversion fan blade 200 of blade root 210 as the second class water conservancy diversion fan blade, includes the second class water conservancy diversion fan blade Axial-flow windwheel be the second class axial-flow windwheel;It is the 3rd by the water conservancy diversion fan blade 200 that the multiple diversion trench 10 is arranged at the top of leaf 230 Class water conservancy diversion fan blade, the axial-flow windwheel for including the three classes water conservancy diversion fan blade are three classes axial-flow windwheel.By the multiple water conservancy diversion Slot 10 is arranged on the water conservancy diversion fan blade 200 on entire 200 blade face of water conservancy diversion fan blade as the 4th class water conservancy diversion fan blade, includes the 4th class water conservancy diversion The axial-flow windwheel of fan blade is the 4th class axial-flow windwheel.
Referring to Fig. 1, in the above-described first embodiment, the axial-flow windwheel is first kind axial-flow windwheel, the first kind axis The multiple diversion trench 10 is arranged on its blade root 210 by the first kind water conservancy diversion fan blade for flowing wind wheel, mainly in view of conventional shaft stream The wind loss of wind wheel is since fraction is caused along the radially outward aerial drainage of the routine axial-flow windwheel.Therefore the first kind is led It flows fan blade and the multiple diversion trench 10 is arranged on blade root 210, it, can be in fraction in blade root when the axial-flow windwheel works Portion 210 occurs before the trend of the radially outward aerial drainage of axial-flow windwheel, and the diversion trench 10 on blade root 210 is in time by the part Air-flow intercepts, so as to which the fraction be blocked to reduce to the trend of the radially outward aerial drainage of axial-flow windwheel with this along the axis stream wind The air quantity of wheel radial flowing, increases the air quantity that the axial-flow windwheel axially flows.
To verify the effect of the first kind water conservancy diversion fan blade, under identical fan blade quantity and working condition, respectively to the first kind Axial-flow windwheel and the conventional axial-flow windwheel with smooth fan blade are tested, and data measured is as follows:
The conventional axial-flow windwheel of table 1., the parameter measured
Rotating speed (rpm) Air quantity (m3/h) Power (w) Noise (dB)
900 1978 42.8 52.3
850 1861 36.3 50.6
800 1755 31.0 49.1
750 1648 26.3 47.6
700 1522 22.1 45.0
Table 2-1. first kind axial-flow windwheels, the parameter measured
Rotating speed (rpm) Air quantity (m3/h) Power (w) Noise (dB)
900 2015 41.7 52.2
850 1901 35.3 50.4
800 1794 29.7 49.3
750 1691 25.1 47.2
700 1557 20.1 44.7
It can be obtained by above-mentioned table 1 and table 2-1 data measureds, under the conditions of same rotational speed, compared with the normal of smooth fan blade For advising axial-flow windwheel, although the noise of the first kind axial-flow windwheel is basically unchanged, the air quantity of the first kind axial-flow windwheel Increase nearly 39m3/ h, power reduce nearly 1.0w.
Referring to Fig. 2, in the second embodiment of the present invention, the axial-flow windwheel is the second class axial-flow windwheel, this second The multiple diversion trench 10 is arranged on its leaf central part 220 by the second class water conservancy diversion fan blade of class axial-flow windwheel, mainly in view of water conservancy diversion The leaf central part 220 of fan blade 200, when axial-flow windwheel works, is relatively easy to that vibration occurs and generates noise further away from wheel hub 100.Therefore The multiple diversion trench 10 is arranged on blade root 210, when the axial-flow windwheel works, leaf central part by the second class water conservancy diversion fan blade Air-flow is refined into multiply little airflow by the diversion trench 10 on 220, and multiply little airflow is interlaced to be opened, and the vibration of per share little airflow Frequency is different, so as to when the multiply little airflow from after leaf margin 202 blow out backward after, the plurality of little airflow is mutually mixed, and is mixed Airstream vibration frequency afterwards changes, and frequency spectrum broadens, and vibration reduces so that lower noise.
To verify the effect of the second class water conservancy diversion fan blade, on the basis of the test experiments of above-mentioned first embodiment, based on phase With under test condition, further the second class axial-flow windwheel is tested, data measured is as follows:
Table 2-2. the second class axial-flow windwheels, the parameter measured
It can be obtained by upper table 1 and table 2-2 test datas, under the conditions of same rotational speed, compared with the routine with smooth fan blade For axial-flow windwheel, the air quantity of the first kind axial-flow windwheel increases nearly 62m3/ h, power reduce nearly 1.2w, and lower noise is near 1.1dB。
With reference to upper table 2-1 and table 2-2 test datas, it is clear that under the conditions of same rotational speed, compared with first kind axial-flow windwheel For, in addition to noise is substantially reduced, air quantity also increases the second class axial-flow windwheel.
Referring to Fig. 3, in the third embodiment of the present invention, the axial-flow windwheel is three classes axial-flow windwheel, the 3rd The multiple diversion trench 10 is arranged on 230 at the top of its leaf by the three classes water conservancy diversion fan blade of class axial-flow windwheel, is mainly considered conventional The axial-flow leaf of axial-flow windwheel, 202 outer end of leaf margin is more smooth thereafter, and following wake frequency is closer to and easily generates larger Turbulence noise.Therefore the multiple diversion trench 10 is arranged on 230 at the top of its leaf by the three classes water conservancy diversion fan blade so that water conservancy diversion fan blade 200 202 outer end of rear leaf margin in concave-convex undulated, air-flow can be made to go out from different location streams, air-flow incorporation time differs during outflow, So as to weaken tail intensity of flow, following wake noise is reduced.
To verify the effect of the three classes water conservancy diversion fan blade, on the basis of the test experiments of above-mentioned second embodiment, based on phase With under test condition, further three classes axial-flow windwheel is tested, data measured is as follows:
Table 2-3. three classes axial-flow windwheels, the parameter measured
Rotating speed (rpm) Air quantity (m3/h) Power (w) Noise (dB)
900 2045 41.4 50.8
850 1931 34.9 49.2
800 1824 29.7 47.6
750 1723 24.9 46.2
700 1581 20.6 43.5
It can be obtained with reference to upper table 1 and table 2-3 test datas, under the conditions of same rotational speed, compared with the normal of smooth fan blade For advising axial-flow windwheel, the air quantity of the three classes axial-flow windwheel increases nearly 69m3/ h, power reduce nearly 1.4w, lower noise 1.4dB。
With reference to upper table 2-2 and table 2-3 test datas, it is clear that under the conditions of same rotational speed, although the three classes axial-flow windwheel The air quantity of air quantity and the second class axial-flow windwheel be not much different, but for the second class axial-flow windwheel, the three classes axis stream The power and noise of wind wheel decrease substantially.
Referring to Fig. 4, in the fourth embodiment of the present invention, the axial-flow windwheel is the 4th class axial-flow windwheel, the 4th The multiple diversion trench 10 is arranged on entire 200 blade face of water conservancy diversion fan blade by the 4th class water conservancy diversion fan blade of class axial-flow windwheel, is mainly The 4th class water conservancy diversion fan blade is enabled to carry out water conservancy diversion to the air-flow of each local location, to obtain the air quantity of bigger, Yi Jiji The earth reduces its power and noise.
To verify the effect of the 4th class water conservancy diversion fan blade, on the basis of the test experiments of above-mentioned 3rd embodiment, based on phase With under test condition, further the 4th class axial-flow windwheel is tested, data measured is as follows:
Table 2-4. axial-flow windwheels of the present invention have the 4th class water conservancy diversion fan blade, the parameter measured
Rotating speed (rpm) Air quantity (m3/h) Power (w) Noise (dB)
900 2081 41.2 50.3
850 1967 34.5 48.8
800 1858 29.4 47.1
750 1752 24.6 45.6
700 1624 20.2 43.3
It can be obtained with reference to upper table 1 and table 2-4 test datas, under the conditions of same rotational speed, compared with the normal of smooth fan blade For advising axial-flow windwheel, the air quantity of the 4th class axial-flow windwheel increases nearly 105m3/ h, power reduce nearly 1.7w, lower noise 1.9dB.According to table 2-1,2,3,4, under the conditions of same rotational speed, compared with first kind axial-flow windwheel, the second class wind wheel or For three classes axial-flow windwheel, the air quantity of the 4th class axial-flow windwheel of the invention is substantially maximum, and power and noise are apparent minimum.
Fig. 5 and Fig. 6 are referred to, is true on the basis of above-mentioned any one embodiment in the fifth embodiment of the present invention Protect the axial-flow windwheel work during, air-flow can be smoothly flowed into diversion trench 10, and by diversion trench 10 be refined into compared with For stable air-flow, therefore preferably, from preceding leaf margin 201, leaf margin 202 is set the depth of diversion trench 10 in gradually increase backward.
Specifically, uniform intervals are arranged on water conservancy diversion fan blade 200 multiple diversion trenches 10 from inside to outside, each diversion trench 10 Depth from preceding leaf margin 201 backward leaf margin 202 in gradually increase set so that the preceding end resistance of each diversion trench 10 compared with It is small, it is easy to sweepforward air-flow so that air-flow is smoothly flowed into diversion trench 10, per share air-flow is carried over during diversion trench 10 flows, Air-flow gradually tends towards stability, and multiply air-flow is from after flowing out the diversion trench 10 of different position, the height of multiply air-flow outflow Level is different, misplaces each other, so as to reduce blade surface turbulence level, promotes wind wheel efficiency.
It does not limit then calmly as the quantity of diversion trench 10.Preferably, the quantity of diversion trench 10 is N1It is a, N1∈ [3,20], tool Body can carry out respective design according to the type of water conservancy diversion fan blade 200.For example, for first kind water conservancy diversion fan blade to three classes water conservancy diversion wind Leaf, then the quantity of diversion trench 10 is preferably 3~10 (such as 5,7 or 9).For the 4th class water conservancy diversion fan blade, then water conservancy diversion The quantity of slot 10 is preferably 10~20 (such as 5,7 or 9).
Fig. 7 and Fig. 8 being referred to, further, it is contemplated that the thickness of water conservancy diversion fan blade 200 is smaller, therefore in order in water conservancy diversion fan blade More uniform multiple diversion trenches 10 are formed on 200, water conservancy diversion fan blade 200 is from inside to outside in wavy tortuous setting, water conservancy diversion fan blade Trough 30 on 200 forms diversion trench 10.
Specifically, water conservancy diversion fan blade 200 have towards the axial-flow windwheel air side outlet air surface and back to it is described go out The windward side in wind face, by the way that from inside to outside in wavy tortuous setting, water conservancy diversion fan blade 200 may be such that going out for water conservancy diversion fan blade 200 Wind face and windward side are each formed with corresponding wave crest 20 and trough 30, and the trough 30 forms diversion trench 10, so as to water conservancy diversion fan blade 200 outlet air surface and windward side can carry out water conservancy diversion to air-flow.It certainly, in other embodiments, can also be only by water conservancy diversion The recessed diversion trench 10 of outlet air surface of fan blade 200.
Fig. 6 to Fig. 8 is referred to, should be illustrated herein, since the depth of diversion trench 10 is from preceding leaf margin 201 leaf margin 202 backward Can be water conservancy diversion fan blade 200 when being set in gradual increase, therefore water conservancy diversion fan blade 200 being set from inside to outside in wavy complications Preceding leaf margin 201 is set with rear leaf margin 202 in concave-convex wave linear shape, and the rear leaf margin 202 that can also be only water conservancy diversion fan blade 200 is in recessed Convex wave linear shape is set, and its preceding leaf margin 201 is set in smooth arc line shaped.
For above-mentioned " preceding leaf margin 201 and rear leaf margin 202 are set in concave-convex wave linear shape ", that is, be comparable to wave crest 20 with The both ends of trough 30 are extended respectively on preceding leaf margin 201 and rear leaf margin 202, so that preceding leaf margin 201 and rear leaf margin 202 are in recessed Convex wave linear shape is set, and in the diversion trench 10 that the trough 30 is formed, the depth of front end is more than 0, and the depth of the diversion trench 10 Degree gradually increase from front to back.So set, the front end of diversion trench 10 can block air-flow to the axial-flow windwheel radial flow in advance Dynamic trend, so as to reduce wind loss;The pressure distribution of leaf margin 202 and rotor tail after the front and back end of diversion trench 10 can change Mark advantageously reduces noise.
" leaf margin 202 is in that concave-convex wave linear shape is set after only, and its preceding leaf margin 201 is set in smooth arc line shaped for above-mentioned Put " this mode, that is, it is comparable to flush with preceding leaf margin 201 after leaf margin 201 before wave crest 20 is all extended to the front end of trough 30, So that preceding leaf margin 201 is set in smooth arc line shaped, in the diversion trench 10 that the trough 30 is formed, depth of front end etc. In 0, and the depth of the diversion trench 10 gradually increases from front to back.So set, the preceding end resistance of diversion trench 10 is smaller, be conducive to Air-flow enters diversion trench 10;The rear end depth of diversion trench 10 is larger, improves the pressure distribution of rear leaf margin 202 and rotor tail, Advantageously reduce noise.
In the present embodiment, water conservancy diversion fan blade 200 uses above-mentioned latter arrangement mode, to ensure water conservancy diversion fan blade 200 While air quantity is maintained at preferable horizontal, the water conservancy diversion fan blade 200 work caused by noise it is smaller.
Refer to Fig. 8 and Fig. 9, the wave crest 20 of arbitrary neighborhood and trough 30, the extension side of the wave crest 20 on water conservancy diversion fan blade 200 To being α with angle formed by the extending direction of the trough 30, α is bigger, then the depth of 10 rear end of diversion trench is bigger;α is smaller, then leads The depth of 10 rear end of chute is smaller.But α should not be too large, otherwise diversion trench 10 is excessive to the resistance of air-flow, and friction causes wind energy Loss, noise increase;α is also unsuitable too small, and otherwise diversion trench 10 is inadequate to the water conservancy diversion dynamics of air-flow, so as to cause axial-flow windwheel Air quantity reduce.Therefore preferably, α ∈ [0.5 °, 5 °], such as 1.5 °, 2.5 ° or 3.5 °.
In order to confirm effect during α ∈ [0.5 °, 5 °], by taking the 4th class axial-flow windwheel as an example, to the 4th class axial-flow windwheel It is tested, experiment is as follows:
During table 3-1. α=0.3 °, the parameter of the 4th class axial-flow windwheel is measured
Rotating speed (rpm) Air quantity (m3/h) Power (w) Noise (dB)
900 1988 42.4 52.1
850 1872 36.1 50.2
800 1767 30.8 48.9
750 1653 25.9 47.3
700 1522 21.8 44.8
During table 3-2. α=0.5 °, the parameter of the 4th class axial-flow windwheel is measured
Rotating speed (rpm) Air quantity (m3/h) Power (w) Noise (dB)
900 2068 40.6 50.5
850 1961 34.2 48.9
800 1853 29.3 47.3
750 1736 24.4 45.7
700 1605 20.0 43.5
During table 3-3. α=1 °, the parameter of the 4th class axial-flow windwheel is measured
Rotating speed (rpm) Air quantity (m3/h) Power (w) Noise (dB)
900 2071 40.6 49.8
850 1957 34.5 48.2
800 1865 29.7 46.6
750 1746 24.6 45.3
700 1614 20.3 42.7
During table 3-4. α=2 °, the parameter of the 4th class axial-flow windwheel is measured
Rotating speed (rpm) Air quantity (m3/h) Power (w) Noise (dB)
900 2079 40.6 49.7
850 1961 34.3 47.9
800 1863 29.3 46.2
750 1751 24.5 44.9
700 1618 20.2 42.3
During table 3-5. α=3 °, the parameter of the 4th class axial-flow windwheel is measured
Rotating speed (rpm) Air quantity (m3/h) Power (w) Noise (dB)
900 2085 41.1 49.9
850 1964 34.3 47.8
800 1859 29.3 46.4
750 1751 24.4 44.7
700 1625 20.3 42.5
During table 3-6. α=4 °, the parameter of the 4th class axial-flow windwheel is measured
Rotating speed (rpm) Air quantity (m3/h) Power (w) Noise (dB)
900 2089 41.3 49.7
850 1966 34.6 47.8
800 1855 29.3 46.3
750 1747 24.4 44.2
700 1623 20.2 42.2
During table 3-7. α=5 °, the parameter of the 4th class axial-flow windwheel is measured
Rotating speed (rpm) Air quantity (m3/h) Power (w) Noise (dB)
900 2080 41.2 50.4
850 1964 34.5 48.5
800 1858 29.2 46.5
750 1749 24.5 45.4
700 1617 20.2 43.2
During table 3-8. α=6 °, the parameter of the 4th class axial-flow windwheel is measured
For the ease of statement, the description below is described so that rotating speed is 800rpm as an example:
When α=0.3 °, air quantity 1767m3/ h, power 30.8w, noise 48.9dB.
When α=0.5 °, air quantity 1853m3/ h, power 29.3w, noise 47.3dB.
When α=1 °, air quantity 1865m3/ h, power 29.7w, noise 46.6dB.
When α=2 °, air quantity 1863m3/ h, power 29.3w, noise 46.2dB.
When α=3 °, air quantity 1859m3/ h, power 29.3w, noise 46.4dB.
When α=4 °, air quantity 1855m3/ h, power 29.3w, noise 46.3dB.
When α=5 °, air quantity 1858m3/ h, power 29.2w, noise 46.5dB.
When α=6 °, air quantity 1843m3/ h, power 29.9w, noise 48.7dB.
From more than test data analysis, for conventional axial-flow windwheel, the 4th class axial-flow windwheel is in α At 0.3 °, air quantity, power and noise are basically unchanged;When α is from when increasing to 5 ° for 0.3 °, air quantity significantly increases, power and noise All it is substantially reduced;And when α continues to increase to 6 °, air quantity reduces, and power but becomes larger, and noise also increases.
It can be seen that α is not to be the bigger the better, but need just meet in the base of larger air quantity within the specific limits On plinth, the power of the 4th class axial-flow windwheel and noise are down to relatively low.As can be seen from the above table, when α ∈ [0.5 °, 5 °]; The power and noise of 4th class axial-flow windwheel may be at a reduced levels.Especially at α ∈ [2 °, 4 °], the 4th class axis The air quantity of stream wind wheel substantially remains in maximum horizontal, and the power of the 4th class axial-flow windwheel and noise are in floor level.
Based on above-mentioned any one embodiment, the outer end of rear leaf margin 202 is equipped with concave recessed portion 40 (such as Fig. 7) forward.Phase For the conventional rear leaf margin 202 set in smooth arc line shaped, water conservancy diversion should be changed equipped with the rear leaf margin 202 of recessed portion 40 The pressure distribution of leaf margin 202 and rotor tail after fan blade 200, reduce attached face separation on the whole.In addition, leaf tail section 223 is in straight Line style is set, and is not easy to form vortex, so as to avoid wind loss.It similarly, also can be in the outer end of the rear leaf margin of smooth fan blade 300 Equipped with concave recessed portion forward.
The foregoing is merely the preferred embodiment of the present invention, are not intended to limit the scope of the invention, every at this The equivalent structure transformation made under the inventive concept of invention using description of the invention and accompanying drawing content or directly/utilization indirectly It is included in other related technical areas in the scope of patent protection of the present invention.

Claims (10)

1. a kind of axial-flow windwheel, which is characterized in that first group of fan blade and second group of wind including wheel hub and on the wheel hub Leaf, first group of fan blade include multiple smooth fan blades, and second group of fan blade includes multiple water conservancy diversion fan blades, the multiple smooth Fan blade is arranged at intervals with the multiple water conservancy diversion fan blade, and each water conservancy diversion fan blade has preceding leaf margin and rear leaf margin, the water conservancy diversion wind Leaf be equipped with it is multiple from the preceding leaf margin extend to it is described after leaf margin diversion trenches, the multiple diversion trench is along the axial-flow windwheel Spaced radial is arranged.
2. axial-flow windwheel as described in claim 1, which is characterized in that the quantity of the smooth fan blade and the water conservancy diversion fan blade Quantity is equal, and alternate intervals are set successively for the multiple smooth fan blade and the multiple water conservancy diversion fan blade.
3. axial-flow windwheel as claimed in claim 2, which is characterized in that the quantity of the smooth fan blade is odd number;And/or The quantity of the water conservancy diversion fan blade is odd number.
4. axial-flow windwheel as described in claim 1, which is characterized in that the depth of the diversion trench is from the preceding leaf margin to described Leaf margin is set in gradually increase afterwards.
5. axial-flow windwheel as claimed in claim 4, which is characterized in that the preceding leaf margin is set in smooth arc line shaped.
6. axial-flow windwheel as claimed in claim 5, which is characterized in that the water conservancy diversion fan blade is set from inside to outside in wavy complications It puts, the trough on the water conservancy diversion fan blade forms the diversion trench.
7. axial-flow windwheel as claimed in claim 6, which is characterized in that the wave crest and ripple of arbitrary neighborhood on the water conservancy diversion fan blade Paddy, the extending direction of the wave crest are α, α ∈ [0.5 °, 5 °] with angle formed by the extending direction of the trough.
8. axial-flow windwheel as described in any one of claim 1 to 7, which is characterized in that the water conservancy diversion fan blade includes neighbouring described The blade root of wheel hub and the leaf central part extended outward from the blade root and from the outwardly extending leaf top of the leaf central part Portion, the multiple diversion trench are arranged on the blade root;Or the multiple diversion trench is arranged on the leaf central part;Or it the multiple leads Chute is arranged at the top of the leaf.
9. axial-flow windwheel as described in any one of claim 1 to 7, which is characterized in that the outer end of leaf margin is recessed forward after described There is recessed portion.
10. a kind of air conditioner, which is characterized in that the air conditioner includes the axis stream wind as described in claim 1 to 9 any one Wheel.
CN201711315788.5A 2017-12-08 2017-12-08 Axial-flow windwheel and air conditioner Pending CN108087333A (en)

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CN108167223A (en) * 2017-12-27 2018-06-15 泛仕达机电股份有限公司 A kind of ripple noise reduction leaf blade and the fan including the blade
CN110886690A (en) * 2019-12-10 2020-03-17 江西卡帕气体技术有限公司 Air compressor machine box that convection heat dissipation just made an uproar falls
CN110905777A (en) * 2019-12-10 2020-03-24 江西卡帕气体技术有限公司 Air compressor machine heat dissipation box of making an uproar that falls convenient to dismantle
CN110905778A (en) * 2019-12-10 2020-03-24 江西卡帕气体技术有限公司 Air compressor machine box that goes up and down to dispel heat and fall and make an uproar

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CN108167223A (en) * 2017-12-27 2018-06-15 泛仕达机电股份有限公司 A kind of ripple noise reduction leaf blade and the fan including the blade
CN110886690A (en) * 2019-12-10 2020-03-17 江西卡帕气体技术有限公司 Air compressor machine box that convection heat dissipation just made an uproar falls
CN110905777A (en) * 2019-12-10 2020-03-24 江西卡帕气体技术有限公司 Air compressor machine heat dissipation box of making an uproar that falls convenient to dismantle
CN110905778A (en) * 2019-12-10 2020-03-24 江西卡帕气体技术有限公司 Air compressor machine box that goes up and down to dispel heat and fall and make an uproar

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