CN106286386A - Centrifugal wind wheel and air-conditioner - Google Patents
Centrifugal wind wheel and air-conditioner Download PDFInfo
- Publication number
- CN106286386A CN106286386A CN201610768662.2A CN201610768662A CN106286386A CN 106286386 A CN106286386 A CN 106286386A CN 201610768662 A CN201610768662 A CN 201610768662A CN 106286386 A CN106286386 A CN 106286386A
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- China
- Prior art keywords
- wheel hub
- noise reduction
- centrifugal wind
- wind wheel
- reduction hole
- 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.)
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- 230000002787 reinforcement Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 description 7
- 239000003351 stiffener Substances 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
- F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
- F04D29/283—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis rotors of the squirrel-cage type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
- F24F1/0022—Centrifugal or radial fans
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Wind Motors (AREA)
Abstract
The open a kind of centrifugal wind wheel of the present invention and air-conditioner, wherein, centrifugal wind wheel includes wheel hub and connects the spoke of described wheel hub, the middle part of described wheel hub is provided with the installing hole that a power supply arbor is installed, described wheel hub has the lateral surface towards motor, and the medial surface relative with described lateral surface, described wheel hub is additionally provided with the noise reduction hole being positioned at described installing hole periphery, described noise reduction hole tilts to extend near described installing hole to medial surface from described lateral surface.Technical scheme greatly reduces the noise of centrifugal wind wheel.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly to a kind of centrifugal wind wheel and air-conditioner.
Background technology
Being usually provided with centrifugal wind wheel in air-conditioner, centrifugal wind wheel can produce noise in the running, thus affects user's body
Test.
Summary of the invention
The main object of the present invention is to propose a kind of centrifugal wind wheel, it is intended to what reduction centrifugal wind wheel operationally produced makes an uproar
Sound.
For achieving the above object, the centrifugal wind wheel that the present invention proposes includes wheel hub and connects the spoke of described wheel hub, described
The middle part of wheel hub is provided with the installing hole that a power supply arbor is installed, and described wheel hub has the lateral surface towards motor, and with described
The medial surface that lateral surface is relative, described wheel hub is additionally provided with the noise reduction hole being positioned at described installing hole periphery, and described noise reduction hole is from institute
State lateral surface to tilt to extend near described installing hole to medial surface.
Preferably, the lateral surface of described wheel hub is provided with the reinforcement being positioned at described noise reduction hole peripheral.
Preferably, described spoke includes that the spoke of the described wheel hub of multiple connection, multiple described spokes are set in distance.
Preferably, described noise reduction hole is arranged at the junction of described wheel hub and described spoke.
Preferably, the junction of each described wheel hub and described spoke, be provided with at described wheel hub radially in interval
Noise reduction hole described in arrangement at least two.
Preferably, the junction of each described wheel hub and described spoke, it is provided with in the radial direction of described wheel hub and described takes turns
Noise reduction hole described in two all staggered in the circumference of hub.
Preferably, the wavelength of the mechanical wave that described hub vibrational produces is λ, and described in two, noise reduction hole is in the radial direction of described wheel hub
On the odd-multiple that spacing is λ.
Preferably, described noise reduction hole is arranged at described in adjacent two between the junction of wheel hub and described spoke.
Preferably, the angle of inclination in described noise reduction hole is between 10 ° to 45 °.
The present invention also provides for a kind of air-conditioner, described air-conditioner include centrifugal wind wheel, described centrifugal wind wheel include wheel hub and
Connect the spoke of described wheel hub, the middle part of described wheel hub be provided with one power supply arbor install installing hole, described wheel hub have towards
The lateral surface of motor, and the medial surface relative with described lateral surface, described wheel hub is additionally provided with and is positioned at described installing hole periphery
Noise reduction hole, described noise reduction hole from described lateral surface to medial surface near described installing hole tilt extend.
Technical scheme is by offering the noise reduction tilted towards motor shaft installing hole on the wheel hub of centrifugal wind wheel
On the one hand hole, reduces the rigidity of wheel hub, makes the dromotropy of vibration, on the other hand makes centrifugal wind wheel fan side and blade-side
Air mutually circulates, thus reduces the formation of eddy current, another further aspect, and the flow direction of air-flow, above three aspect are complied with in noise reduction hole
Jointly reduce the noise of centrifugal wind wheel.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to
Other accompanying drawing is obtained according to the structure shown in these accompanying drawings.
Fig. 1 is the structural representation of centrifugal wind wheel first embodiment of the present invention；
Fig. 2 is the top view of centrifugal wind wheel in Fig. 1；
Fig. 3 be in Fig. 2 centrifugal wind wheel along the sectional view of M-M line；
Fig. 4 is structure for amplifying schematic diagram at A in Fig. 3；
Fig. 5 is the structural representation at another visual angle of Fig. 1；
Fig. 6 is the structural representation of centrifugal wind wheel the second embodiment of the present invention；
Fig. 7 is the structural representation of centrifugal wind wheel the 3rd embodiment of the present invention.
Fig. 8 is the structural representation of centrifugal wind wheel the 4th embodiment of the present invention.
Drawing reference numeral illustrates:
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further referring to the drawings.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under not making creative work premise all its
His embodiment, broadly falls into the scope of protection of the invention.
If it is to be appreciated that the embodiment of the present invention relates to directivity instruction (such as up, down, left, right, before and after ...),
Then directionality instruction be only used for explaining under a certain particular pose (as shown in drawings) relative position relation between each parts,
Motion conditions etc., if this particular pose changes, then directionality instruction changes the most therewith.
If it addition, the embodiment of the present invention relates to the description of " first ", " second " etc., then should " first ", " second " etc.
Description be only used for describing purpose, and it is not intended that instruction or imply its relative importance or implicit indicate indicated skill
The quantity of art feature.Thus, define " first ", the feature of " second " can express or implicitly include at least one this spy
Levy.It addition, the technical scheme between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy
Enough be embodied as basis, when the combination of technical scheme occur conflicting maybe cannot realize time will be understood that the knot of this technical scheme
Close and do not exist, the most not within the protection domain of application claims.
The present invention proposes a kind of centrifugal wind wheel and is provided with the air-conditioner of this centrifugal wind wheel.
With reference to Fig. 1, centrifugal wind wheel 10 generally includes air inducing circle 11, blade 12 and blade seat, and the opposite end of blade 12 divides
Corresponding connection air inducing circle 11 and blade seat.Blade seat includes wheel hub 13, spoke and mounting disc 15, and spoke connects mounting disc 15 He
Wheel hub 13.
In embodiments of the present invention, as it is shown in figure 1, centrifugal wind wheel 10 includes wheel hub 13 and connects the wheel of described wheel hub 13
Spoke, the middle part of described wheel hub 13 is provided with the installing hole 130 that a power supply arbor is installed, and described wheel hub 13 has the outside towards motor
Face, and the medial surface relative with described lateral surface, described wheel hub 13 is additionally provided with the noise reduction being positioned at described installing hole 130 periphery
Hole 131, described noise reduction hole 131 tilts to extend near described installing hole 130 to medial surface from described lateral surface.(with reference to Fig. 3
And Fig. 4).
Concrete, operationally, source of making an uproar is essentially from the most several aspects for centrifugal wind wheel 10.On the one hand, motor shaft and peace
There is portion gap in the inwall in dress hole 130, when centrifugal wind wheel 10 rotates, produces vibration between motor shaft and wheel hub 13.Separately
On the one hand, line voltage is unstable, easily produces harmonic wave, and the operating of motor can be impacted by this harmonic wave, by the shadow of this harmonic wave
Ringing, during motor high-speed rotation, necessarily lead to vibration between motor shaft and centrifugal wind wheel 10, this vibration can be by wheel hub 13
Conduction, to spoke, is then conducted to mounting disc 15 by spoke, then conducts to blade 12, and the noise that final blade 12 produces is relatively
Greatly.Another aspect, centrifugal wind wheel 10 operationally, the motor side of centrifugal wind wheel 10 and blade 12 side all can air intake, centrifugal wind wheel
10 inside easily produce eddy current, thus produce noise.
In the present embodiment, wheel hub 13 is offered noise reduction hole 131, on the one hand can reduce the internal stress of wheel hub 13, set
Reduce the rigidity of centrifugal wind wheel 10 in meter intensity allowed band, make centrifugal wind wheel 10 have more preferable toughness, such that it is able to fall
During low wheel hub 13 and motor movement, the conduction of vibration, reaches the effect of noise reduction.
Offering of noise reduction hole 131 can make the air of motor side and blade-side mutually circulate, thus reduces the formation of eddy current,
And then reduce the noise that eddy current produces.Furthermore, when entering centrifugal wind wheel 10 inside due to the air of motor side, air-flow
Track is arc line shaped, and noise reduction hole 131 is to provide from outer surface inner surface and tilt towards installing hole, namely noise reduction hole
The flow direction providing direction-adapting air-flow of 131, therefore greatly reduces the air-flow resistance through noise reduction hole 131, and eddy current is formed
Probability can reduce, and the frictional resistance that gas shock wheel hub 13 produces reduces, thus noise also can reduce.
In order to verify in the present embodiment, the noise reduction hole 131 effect to wind wheel noise reduction, test with 9 centrifugal wind wheels 10, its
In, 3 centrifugal wind wheels 10 do not offer noise reduction hole 131；3 centrifugal wind wheels 10 offer and provide direction and be perpendicular to the noise reduction of wheel hub
Hole 131 (follow-up abbreviation vertical noise reduction hole), the direction that provides of 3 centrifugal wind wheels 10 tilts (follow-up abbreviation inclination towards installing hole
Noise reduction hole).It is the most identical that quantity, position and size are offered in the noise reduction hole 131 of above-mentioned 6 centrifugal wind wheels 10), carry to motor simultaneously
220v constant voltage, and measure the noise that 9 centrifugal wind wheels 10 produce simultaneously.
Table 1, centrifugal wind wheel noise contrast table before and after perforate
From table 1, after offering vertical noise reduction hole 131, the noise of centrifugal wind wheel 10 averagely reduces 1.27dB.Offer and incline
The make an uproar centrifugal wind wheel 10 in hole 131 of oblique deascension is not relative to offering the centrifugal wind wheel 10 in noise reduction hole 131, and noise averagely reduces
1.67dB。
Technical scheme is by offering towards the inclination of motor shaft installing hole on the wheel hub 13 of centrifugal wind wheel 10
Noise reduction hole 131, on the one hand reduces the rigidity of wheel hub 13, makes the dromotropy of vibration, on the other hand makes centrifugal wind wheel 10 blower fan
The air of side and blade 12 side mutually circulates, thus reduces the formation of eddy current, another further aspect, and air-flow is complied with in noise reduction hole 131
Flowing to, above three aspect reduces the noise of centrifugal wind wheel 10 jointly.
The shape in noise reduction hole 131 can be multiple, and such as waist-shaped hole, circular hole, square opening, tri-angle-holed and other are regular
Or irregular be all possible.In the present embodiment, described noise reduction hole 131 is waist-shaped hole, and described waist-shaped hole is along described wheel hub
13 circumferentially extending.When wheel hub 13 vibrates, direction of vibration Shi Youqi conducts to edge at center, owing to waist-shaped hole is elongated
, waist-shaped hole is preferable along the circumferentially extending barriering effect to vibration of wheel hub 13.
With reference to Fig. 5, it is contemplated that centrifugal wind wheel 10 rotating speed is higher, offers noise reduction hole 131 and may result in fall on wheel hub 13
The hole 131 periphery local strength that makes an uproar weakens, and centrifugal wind wheel 10 operates for a long time and may result in noise reduction hole 131 periphery cracking.In this reality
Executing in example, in order to strengthen the intensity of wheel hub 13, the lateral surface of described wheel hub 13 is provided with the reinforcement being positioned at described noise reduction hole peripheral
132.In the present embodiment, equally, testing with 6 centrifugal wind wheels 10,6 centrifugal wind wheels 10 all offer fall on wheel hub 13
Making an uproar hole 131 (it is the most identical that quantity, position and size are offered in noise reduction hole 131), wherein the back side of 3 arranges reinforcement 132, and other 3
Platform is not provided with reinforcement 132.
Table 2, arranges centrifugal wind wheel noise contrast table before and after ring stiffener
By this table 2 it can be seen that arrange ring stiffener 142 after, the noise of centrifugal wind wheel 10 slightly raises.
The analysis of causes: before arranging annular ring stiffener 142, this is owing to ring stiffener 142 makes centrifugal wind wheel 10
Integral rigidity strengthen again, the effect that the benefit of perforate own is the biggest is contemplated to reduce the integral rigidity of centrifugal wind wheel 10,
Reduce the transmission of vibration, after arranging ring stiffener 142, be equivalent to reduce the beneficial effect in noise reduction hole to a certain extent.As
Fruit is not provided with ring stiffener 142, and strong 10 degree of centrifugal wind wheel may can not meet requirement, causes centrifugal wind wheel 10 in rotation
Time the phenomenon that ruptures occurs.So in the case of less to noise effect, arranging ring stiffener 142 and can ensure raising
The service life of centrifugal wind wheel 10.
Seeing figures.1.and.2, in one embodiment, described spoke includes the spoke 14 of the described wheel hub of multiple connection 13, multiple
Described spoke 14 is set in distance.So, the rigidity of mounting disc entirety reduce further, and noise also can reduce.
In one embodiment, with reference to Fig. 6 and Fig. 7, in order to reduce noise further, described noise reduction hole 131 is arranged at described
Wheel hub 13 and the junction of described spoke 14.First the vibration produced between motor shaft and wheel hub 13 is conducted to spoke by wheel hub 13
14, then conducted to mounting disc 15 by spoke 14, finally conducted to blade 12 by mounting disc 15.Owing to spoke 14 is in ribbon
Arranging, in the process, the noise reduction hole 131 being arranged at wheel hub 13 and the junction of spoke 14 can effectively reduce spoke 14 to shaking
Dynamic conduction.In order to verify that noise reduction hole 131 is arranged at the noise reduction of wheel hub 13 and the junction of spoke 14, do following experiment and set
Meter: carry 220v constant voltage to motor simultaneously, and measure the noise that 6 centrifugal wind wheels 10 produce, wherein 3 centrifugal wind simultaneously
The middle part (in the middle part of abbreviation) that the noise reduction hole 131 of wheel 10 is arranged between installing hole 130 and wheel hub 13 periphery, 3 centrifugal wind wheels 10
Noise reduction hole 131 be arranged at the junction (abbreviation junction) of wheel hub 13 and spoke 14.
Table 3, noise reduction hole is arranged at the middle part of centrifugal wind wheel and the noise contrast table of junction
Can be drawn by table 3, noise reduction hole 131 is arranged at junction ratio and is arranged at middle part, noise relative reduction 1.03dB.
With reference to Fig. 6 and Fig. 7, on the basis of a upper embodiment, in order to reduce the wheel hub 13 conduction to vibration further, in
In the present embodiment, each described wheel hub 13 is provided with the junction of described spoke 14 and is positioned at described wheel hub 13 and described spoke 14
The first noise reduction hole of junction and the second noise reduction hole.Two noise reduction holes 131 are to the barriering effect of Vibration propagation more preferably.Two noise reduction holes
The arrangement mode of 131 can be to stagger arrangement in the circumference of wheel hub 13, it is also possible to be at described wheel hub 13 radially in mistake
Begin to rehearse cloth.Here, described first noise reduction hole and described second noise reduction hole radially arranging in stacking at described wheel hub 13, quite
In being applied with two blockages to vibration, the conduction of vibration can be reduced further.
With continued reference to Fig. 6, in order to reduce noise further, described first noise reduction hole and described second noise reduction hole are taken turns described
Radially staggering of hub 13, so, the mechanical wave that wheel hub 13 vibration produces conducting path on spoke 14 lengthens, and finally conducts
The amplitude of the mechanical wave to blade 12 can weaken, thus reaches the effect of noise reduction.
On the basis of a upper embodiment, in order to reduce noise further, the wavelength of the mechanical wave that described wheel hub 13 produces
λ, described first noise reduction hole and described second noise reduction hole are L in the spacing radially of described wheel hub 13, and wherein L is the odd number of λ
Times.Specifically, vibration is by wheel hub 13 during spoke 14 conducts, and noise reduction hole 131 can produce Phase delay to mechanical wave,
Through the mechanical wave in the first noise reduction hole, will interfere with the mechanical wave entering the second noise reduction hole, owing to L is the odd-multiple of λ,
So, the mechanical wave through the first noise reduction hole can superpose cancellation (crest and trough with the mechanical wave entering the second noise reduction hole
Meet), such that it is able to be substantially reduced the conduction of vibration, noise is greatly reduced.
Here, λ is variable, different centrifugal wind wheels 10, its λ value is different, the motor of different rotating speeds, and λ value is the most not
With.So, as a example by air-conditioner, the rotating speed of motor driving centrifugal wind wheel 10 to rotate is generally 850rpm, now can be with
The motor of 850rpm drives centrifugal wind wheel to rotate 10, and measures the wavelength X of the now mechanical wave that centrifugal wind wheel 10 produces, then with
Based on L is the odd-multiple of λ, offer noise reduction hole 131.
With reference to Fig. 8, in a further preferred embodiment, described noise reduction hole 131 is arranged at spoke 14 described in adjacent two and institute
State between the junction of wheel hub.In order to verify the noise reduction in noise reduction hole 131 in the present embodiment, do following experiment: simultaneously to electricity
Machine conveying 220v constant voltage, and measure the noise that 6 centrifugal wind wheels 10 produce, the wherein noise reduction of 3 centrifugal wind wheels 10 simultaneously
Hole 131 is arranged at the middle part (in the middle part of abbreviation) between installing hole 130 and wheel hub 13 periphery, the noise reduction hole 131 of 3 centrifugal wind wheels 10
It is arranged between two adjacent spoke 14 and the junction of wheel hub 13 (being called for short edge).
Table 4, noise reduction hole is arranged at the middle part of centrifugal wind wheel and the noise contrast table of junction
Can be drawn by table 4, noise reduction hole 131 is arranged at edge and is arranged at middle part relative to noise reduction hole 131, and noise is average
Reduce 0.73dB.
In one embodiment, in order to make the noise reduction in noise reduction hole 131 more preferably, do following experiment: carry to motor simultaneously
220v constant voltage, and measure the noise that 15 centrifugal wind wheels 9 produce, the centrifugal wind of tilt angle alpha=0 ° in noise reduction hole simultaneously
Wheel 10 has 3,15 ° have 3,30 ° have 3,45 ° have 3,3 of 60 °.(the noise reduction hole of 15 centrifugal wind wheels 10
131 to offer position, size and shape the most identical, and the position in noise reduction hole may be contained within wheel hub 13 and spoke 14 junction)
Table 5, noise reduction hole is arranged at the middle part of centrifugal wind wheel and the noise contrast table of junction
As shown in Table 5, when α is increased to 10 ° by 0 °, noise substantially reduces, and when α is increased to 45 ° by 10 °, noise tends to phase
To steady statue, and, noise is in reduced levels.So, take α scope being 10 ° to 45 ° at this is preferred embodiment.Namely
The angle of inclination in noise reduction hole 131 is between 10 ° to 45 °.
The foregoing is only the preferred embodiments of the present invention, not thereby limit the scope of the claims of the present invention, every at this
Under the inventive concept of invention, utilize the equivalent structure transformation that description of the invention and accompanying drawing content are made, or directly/indirectly use
The technical field relevant at other is included in the scope of patent protection of the present invention.
Claims (10)
1. a centrifugal wind wheel, including wheel hub and the spoke of the described wheel hub of connection, the middle part of described wheel hub is provided with a power supply arbor
The installing hole installed, it is characterised in that described wheel hub has a lateral surface towards motor, and relative with described lateral surface in
Side, described wheel hub is additionally provided with the noise reduction hole being positioned at described installing hole periphery, described noise reduction hole from described lateral surface to inner side
Face tilts to extend near described installing hole.
2. centrifugal wind wheel as claimed in claim 1, it is characterised in that the lateral surface of described wheel hub is provided with and is positioned at described noise reduction hole
The reinforcement of periphery.
3. centrifugal wind wheel as claimed in claim 1, it is characterised in that described spoke includes the spoke of the described wheel hub of multiple connection
Bar, multiple described spokes are set in distance.
4. centrifugal wind wheel as claimed in claim 3, it is characterised in that described noise reduction hole is arranged at described wheel hub and described spoke
Junction.
5. centrifugal wind wheel as claimed in claim 4, it is characterised in that each described wheel hub and the junction of described spoke, if
Be equipped with at described wheel hub radially in noise reduction hole described at least two be intervally arranged.
6. centrifugal wind wheel as claimed in claim 4, it is characterised in that each described wheel hub and the junction of described spoke, if
It is equipped with noise reduction hole described in two all staggered in the radial direction of described wheel hub and the circumference of described wheel hub.
7. centrifugal wind wheel as claimed in claim 6, it is characterised in that the wavelength of the mechanical wave that described hub vibrational produces is λ,
Noise reduction hole described in two is in the odd-multiple that spacing radially is λ of described wheel hub.
8. centrifugal wind wheel as claimed in claim 3, it is characterised in that described noise reduction hole be arranged at spoke described in adjacent two with
Between the junction of described wheel hub.
9. centrifugal wind wheel as claimed in claim 1, it is characterised in that the angle of inclination in described noise reduction hole 10 ° to 45 ° it
Between.
10. an air-conditioner, it is characterised in that include the centrifugal wind wheel as described in claim 1 to 9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610768662.2A CN106286386A (en) | 2016-08-30 | 2016-08-30 | Centrifugal wind wheel and air-conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610768662.2A CN106286386A (en) | 2016-08-30 | 2016-08-30 | Centrifugal wind wheel and air-conditioner |
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| Publication Number | Publication Date |
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| CN106286386A true CN106286386A (en) | 2017-01-04 |
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ID=57675237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610768662.2A Pending CN106286386A (en) | 2016-08-30 | 2016-08-30 | Centrifugal wind wheel and air-conditioner |
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| CN204283989U (en) * | 2014-05-26 | 2015-04-22 | 珠海格力电器股份有限公司 | Centrifugal blower and air conditioner using same |
| CN204591782U (en) * | 2015-02-06 | 2015-08-26 | 一汽-法雷奥汽车空调有限公司 | Blower wheel and comprise the blower of this impeller |
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