CN107061357A - Blade, centrifugal blower fan blade wheel, centrifugal blower and range hood - Google Patents
Blade, centrifugal blower fan blade wheel, centrifugal blower and range hood Download PDFInfo
- Publication number
- CN107061357A CN107061357A CN201710044940.4A CN201710044940A CN107061357A CN 107061357 A CN107061357 A CN 107061357A CN 201710044940 A CN201710044940 A CN 201710044940A CN 107061357 A CN107061357 A CN 107061357A
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- Prior art keywords
- blade
- slot
- blade body
- centrifugal blower
- flow
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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
- F04D29/30—Vanes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- 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
-
- 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
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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
- F04D29/666—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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of blade, centrifugal blower fan blade wheel, centrifugal blower and range hood, the blade includes the blade body of tabular extendable in the longitudinal direction, the cross section profile of the blade body is arc, blade body has first side and the second side opposite with the first side in horizontal direction, the through slot inside and outside extendable in the longitudinal direction and connection arc shaped blade body, the first side of the through slot blades adjacent body are offered in blade body.By opening up through slot in blade body, so that medial surface attachment flowing of the fraction along blade body, lateral surface of another part air-flow by through slot along blade body, which adheres to, to be flowed, to reduce the flow separation of air-flow, prevent from producing vortex between adjacent blades, to improve the air performance of impeller, reduce noise level, and then the performance of centrifugal blower is improved, reduce the optimization cost of centrifugal blower.
Description
Technical field
The present invention relates to exhaust equipment, in particular it relates to a kind of blade, centrifugal blower fan blade wheel, centrifugal blower and fume-exhausting
Machine.
Background technology
The blower fan that most range hoods are used is centrifugal blower, because the blast that centrifugal blower is provided is relatively large,
And the features such as with compact conformation, pressure coefficient and high discharge coefficient, thus suitable for the requirement of range hood.Wherein, impeller
For the core building block of centrifugal blower, the quality of its performance directly affects the air performance and noise of range hood, and impeller
The blade of upper assembling is the critical component for determining centrifugal blower fan blade wheel performance.The rotation that usual impeller passes through so that air-flow enters
The center of impeller, and trailing edge 14 ' is flowed to by blade inlet edge 13 ', air-flow is discharged.
But be made more than the centrifugal blower of the prior art for absorbing cigarette machine of Metal plate, blade is typically designed to circle
The hardened structure of arc, referring specifically to Fig. 1 and Fig. 2, the leaf road of this circular arc vane is generally shorter, and in order to obtain accelerating type leaf road
It is normally that, with larger inlet air flow angle, this causes the formation of blade inlet edge 13 ' by blade design to improve the efficiency of impeller
Larger adverse pressure gradient, easily flow separation occurs air-flow for edge 13 ' in front of the blade, and whirlpool can be produced between adjacent blades
Stream.The flow field of the blade in the prior art simulation result figure shown referring specifically to Fig. 3, because the camber of circular arc vane is excessive, makes
Obtain inlet air flow angle also larger so that form larger adverse pressure gradient between the medial surface and lateral surface of circular arc vane, cause
Flow separation occurs air-flow for edge 13 ' in front of the blade, and because the camber of circular arc vane is excessive so that air-flow is along circular arc leaf
When the medial surface attachment of piece is flowed to close to trailing edge 14 ', the fraction is because inertia and centrifugal action are towards blade inlet edge 13 '
Reflux, to produce vortex between adjacent blades so that air-flow discharge is not smooth, so as to cause impeller air hydraulic performance decline, noise
Increase.
The content of the invention
It is an object of the invention to provide a kind of blade, centrifugal blower fan blade wheel, centrifugal blower and range hood, the blade can
Suppress the flow separation of air-flow, prevent from producing vortex between adjacent blades, to improve the air performance of impeller, reduce noise water
It is flat, and then the performance of centrifugal blower is improved, reduce the optimization cost of centrifugal blower.
To achieve these goals, according to the first aspect of the invention there is provided a kind of blade, the blade is included along longitudinal direction
The blade body of the tabular of direction extension, the cross section profile of the blade body is arc, and the blade body is in horizontal direction
With first side and the second side opposite with the first side, offer and prolong along the longitudinal direction in the blade body
Stretch and connect the through slot inside and outside the blade body of arc, the through slot adjacent to the blade body described first
Side.
Preferably, in the cross section of the blade, normal of the through slot at the position in the arc is N,
The fluting direction of the through slot is M, wherein, the angle α between the normal N and the fluting direction M is 0 degree to 60 degree,
Preferably 0 degree to 15 degree.
Preferably, the through slot has and is spaced in parallel with each other and is respectively adjacent to the first side in a lateral direction
With the first trough rim and the second trough rim of second side, distance of first trough rim with the first side in the direction of the width is
S, the width of the blade body is W, wherein, S/W≤1/4, preferably 1/8 to 1/5.
Preferably, the distance between first trough rim and second trough rim are 0.8-1.5mm.
Preferably, the length of the through slot in a longitudinal direction is the 1/2 to 4/5 of the length of the blade body.
Preferably, the through slot is the single groove continuously extended along the longitudinal direction.
Preferably, the through slot includes the multiple grooves section discontinuously arranged along the longitudinal direction as a row.
Preferably, the area of the through slot is the 1/10 to 1/30 of the area of the lateral surface of the blade body.
Preferably, the area of the through slot is 10mm2To 25mm2。
Preferably, the cross section profile of the blade body is circular arc.
According to the second aspect of the invention there is provided a kind of centrifugal blower fan blade wheel, the centrifugal blower fan blade wheel includes coaxially setting
The preceding disk and rear disk put, the centrifugal blower fan blade wheel include multiple above-mentioned blades provided according to the present invention, Duo Gesuo
Blade is stated to be arranged between the preceding disk and the rear disk, and multiple blades are uniform along the circumference of the preceding disk
Arrangement, the central axis of the first side of the blade body close to the preceding disc rotary.
According to the third aspect of the invention we there is provided a kind of centrifugal blower, including spiral case and motor, the centrifugal blower bag
The above-mentioned centrifugal blower fan blade wheel provided according to the present invention is included, the centrifugal blower fan blade wheel is arranged in the spiral case, the rear circle
Disk is arranged in the rotating shaft of the motor.
In addition, according to the fourth aspect of the invention, additionally providing a kind of range hood, the range hood is included according to this
The above-mentioned centrifugal blower provided is provided.
In the prior art because the camber of circular arc vane is excessive so that the inlet air flow angle of attack is also larger so that circular arc
Blade inlet edge suction surface (lateral surface) forms larger adverse pressure gradient along grain direction, and causing air-flow, edge flows in front of the blade
The medial surface attachment flowing of dynamic separation, i.e. fraction along blade body, lateral surface of another part air-flow away from blade body
Flowing；And because the camber of circular arc vane is excessive so that medial surface attachment of the air-flow along circular arc vane flows to close
During trailing edge, the fraction is because inertia and centrifugal action are towards blade inlet edge reflux, to produce vortex between adjacent blades.
The present invention passes through above-mentioned technical proposal, i.e. open up through slot by the position of the neighbouring first side in blade body so that arc
The medial surface of shape blade body is interconnected with lateral surface, thus reduce arc shaped blade body adjacent to first side medial surface with
Larger adverse pressure gradient is formed between lateral surface, so as to suppress flow separation of the air-flow at first side.Further, since insertion
Groove connects the medial surface and lateral surface of arc shaped blade body so that the fraction for adhering to flowing along the medial surface of blade body leads to
Cross through slot to flow towards the lateral surface of blade body, with to the air-flow Implantation Energy of the lateral surface of blade body, on overcoming
The inverse pressure stated, suppresses the flow separation of air-flow, prevents from producing vortex between adjacent blades so that air-flow can be along adjacent blades
Medial surface attachment flow to second side, air-flow is discharged, improve impeller air performance, reduce noise level, Jin Erti
The performance of high centrifugal blower, reduces the optimization cost of centrifugal blower.
Other features and advantages of the present invention will be described in detail in subsequent embodiment part.
Brief description of the drawings
Accompanying drawing is, for providing a further understanding of the present invention, and to constitute a part for specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the structural representation of blade of the prior art；
Fig. 2 is the side view of blade of the prior art；
Fig. 3 is the flow field simulation result figure of blade of the prior art；
Fig. 4 is the structural representation of the blade according to the preferred embodiment of the present invention；
Fig. 5 is the sectional view of the blade according to the preferred embodiment of the present invention；
Fig. 6 is the flow field simulation result figure according to the blade of the preferred embodiment of the present invention；
Fig. 7 is the structural representation of the impeller according to the preferred embodiment of the present invention.
Description of reference numerals
The trailing edge of 13 ' blade inlet edge 14 '
The through slot of 11 blade body 12
The second side of 13 first side 14
The trough rim of 21 first trough rim 22 second
23 grooves section
The rear disk of disk 4 before 3
Embodiment
The embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this place is retouched
The embodiment stated is merely to illustrate and explain the present invention, and is not intended to limit the invention.
In the present invention, in the case where not making opposite explanation, the noun of locality used such as " inside and outside " refers to, with curved line
Based on, the direction towards the arc center of circle is arc shaped inside, and the direction away from the arc center of circle is (dorsal part) on the outside of arc.
Referring to Fig. 4 and Fig. 5, it is shown that according to a kind of blade of the preferred embodiment of the present invention, the blade is included along vertical
The blade body 11 of the tabular extended to direction, the cross section profile of the blade body 11 is arc, and blade body 11 is in transverse direction
Direction has first side 13 and the second side 14 opposite with the first side 13, is offered in blade body 11 along described vertical
Extend to direction and connect the through slot 12 inside and outside arc shaped blade body 11, the of the blades adjacent body 11 of through slot 12
One side 13.
Wherein, referring to Fig. 7 impeller structural representation, defined in it longitudinal direction be impeller center of rotation axis side
To horizontal direction is any direction in the plane perpendicular to the center of rotation axis.The blade of tabular is defined as with arc
As bus it is extendable in the longitudinal direction formed by blade body 11 structure type.First side 13 is extendable in the longitudinal direction
And the edge of the blade body 11 of the neighbouring center of rotation axis, second side 14 is extendable in the longitudinal direction and remote described
The edge of the blade body 11 of center of rotation axis.Air-flow is then to flow to second side 14, i.e. first side by first side 13
13 are located at the position of windward side.
The rotation that usual impeller passes through so that air-flow enters the center of impeller, and flows to trailing edge by blade inlet edge 13 '
14 ', air-flow is discharged.
Referring to Fig. 1 to Fig. 3, circular arc vane of the prior art does not open up through slot, then can be between adjacent blades
Form vortex.Specifically, in the prior art because the camber of circular arc vane is excessive so that the inlet air flow angle of attack is also larger, makes
Obtain in air flow direction blade inlet edge 13 ', the lateral surface of circular arc vane leading edge 13 ' forms larger inverse pressure along airflow direction
Gradient, causing air-flow, the medial surface attachment flowing of flow separation, i.e. fraction along blade body occurs for edge 13 ' in front of the blade,
Lateral surface flowing of another part air-flow away from blade body, thus the noise of increase impeller, reduce the air performance of impeller；And
And because the camber of circular arc vane is excessive so that when medial surface attachment of the air-flow along circular arc vane is flowed to close to trailing edge,
The fraction is because inertia and centrifugal action are towards the reflux of blade inlet edge 13 ', to produce vortex between adjacent blades.
Referring to Fig. 4 to Fig. 6, the present invention opens up through slot by the position of the neighbouring first side 13 in blade body 11
12 so that the medial surface of arc shaped blade body 11 is interconnected with lateral surface, and fraction flows to arc-shaped leaf by through slot 12
The lateral surface of piece body 11, so as to be the low energy gases Implantation Energy of suction surface (lateral surface), overcomes along the inverse of grain direction
Gradient is pressed, to suppress flow separation of the air-flow at first side 13.Further, since the connection arc shaped blade of through slot 12 body 11
Medial surface and lateral surface so that adhere to the fraction of flowing by through slot 12 towards leaf along the medial surface of blade body 11
The lateral surface flowing of piece body 11, with to the air-flow Implantation Energy of the lateral surface of blade body 11, to overcome above-mentioned inverse pressure ladder
Degree, suppresses the flow separation of air-flow, prevents from producing vortex between adjacent blades so that air-flow can be along the inner side of adjacent blades
Face attachment flows to second side 14, air-flow is discharged, improve impeller air performance, reduce noise level, and then improve from
The performance of heart blower fan, reduces the optimization cost of centrifugal blower.
Because easily edge 13 ' is also easy to produce flow separation and adverse pressure gradient in front of the blade in the prior art, therefore the present invention will be passed through
Groove 12 is extendable in the longitudinal direction to be opened in blade body 11 at the position of neighbouring first side 13.So that prolonging along the longitudinal direction
The through slot 12 stretched can comprehensively reduce formed adverse pressure gradient at the position of neighbouring first side 13 so that air-flow stream
It is dynamic more uniform.
In order to which successfully air-flow is guided to the lateral surface of blade body 11 by the medial surface of arc shaped blade body 11,
Preferably, in the cross section of blade, normal of the through slot 12 at the position in arc is N, the fluting direction of through slot 12
For M, wherein, the angle α between normal N and fluting direction M is 0 degree to 60 degree, elects 0 degree to 15 degree as.Enable through slot 12
The flow direction of air-flow is enough catered to, fraction is successfully guided to blade body by the medial surface of arc shaped blade body 11
11 lateral surface so that fraction is flowed by through slot 12 towards the lateral surface of blade body 11, to reduce arc shaped blade
The adverse pressure gradient formed between the medial surface and lateral surface of body 11, so as to reduce the flow separation of air-flow, is prevented in adjacent leaf
Vortex is produced between piece.Wherein, the angle α between normal N and fluting direction M can rationally be designed according to specific operating mode, in this hair
In bright preferred embodiment, referring to Fig. 5, the angle α between normal N and fluting direction M is 15 degree.In addition, passing through also blade
Through slot 12 is opened up on body 11, the weight of blade itself can be reduced.
In the prior art arc shaped blade due to camber it is larger so that there is larger inverse pressure ladder between the interior lateral surface of blade
Degree, fraction can not overcome the adverse pressure gradient and cause air-flow flow separation formed here, i.e. the fraction can not edge
The medial surface attachment flowing of arc shaped blade.It is therefore preferred that the through slot 12 of the present invention is in a lateral direction with parallel to each other
Ground interval and the first trough rim 21 and the second trough rim 22 for being respectively adjacent to first side 13 and second side 14, the first trough rim 21 and
The distance of one side 13 in the direction of the width is S, and the width of blade body 11 is W, wherein, S/W≤1/4, preferably 1/8 to 1/
5.So that fraction flows to the lateral surface of arc shaped blade by through slot 12, the air-flow that adverse pressure gradient can not be overcome by thinking injects
Energy, so as to overcome inverse pressure, suppresses the flow separation of air-flow.In a preferred embodiment of the invention, S/W is 1/8.
According to different operating modes, the distance between first trough rim 21 and the second trough rim 22 of through slot 12 can specifically be set
Meter.In the present invention, it is preferred to, the distance between the first trough rim 21 and the second trough rim 22 (i.e. the width of through slot 12) they are 0.8-
1.5mm.In the blade shown in Fig. 4 and Fig. 5, the distance between the first trough rim 21 and the second trough rim 22 are 1.0mm.As long as ensuring
The width of the through slot 12 of design can be enough to overcome the inverse pressure to be formed, and suppress the flow separation of air-flow.
In order to further ensure that through slot 12 can be enough to overcome inverse pressure, suppress air current flow separation, except in terms of width
Outside being improved, it can also be improved in length direction.Preferably, the length of through slot 12 in a longitudinal direction is blade
The 1/2 to 4/5 of the length of body 11.It is further preferred that in order to ensure the intensity of blade body 11, through slot 12 is along the longitudinal direction
Centrally arranged, i.e. the two ends of through slot 12 and two end faces of blade body 11 have certain distance so that blade body 11 is not
Frangibility or bending.
Through slot 12 can have a variety of arrangements, in one embodiment of the invention, and through slot 12 is along described
The single groove that longitudinal direction continuously extends.I.e. the number of through slot 12 is the insertion groove of a strip, and such a embodiment is fitted
Smaller for blade dimensions, the through slot 12 for opening up an entirety does not interfere with the strength and stiffness of blade body 11.Wherein, leaf
Piece body 11 can be made up of the high polymer material of Metal plate including plastics.Through slot 12 can with the one of blade body 11 into
Type, also can first formed blades body 11, then by modes such as punching presses, through slot 12 is molded in blade body 11.
But the invention is not limited in this, in another embodiment of the invention, through slot 12 is included along described vertical
Discontinuously arranged to direction as multiple grooves section 23 of a row.Reinforcement is formed between adjacent slot section 23, to strengthen blade body 11
Strength and stiffness.Such a embodiment is applied to larger-size blade, by the way that through slot 12 is designed as into multiple groove sections 23,
To ensure the strength and stiffness of blade body 11.In a preferred embodiment of the invention, referring to Fig. 4, through slot 12 includes edge
Discontinuously arrangement is a two grooves section 23 arranged to the longitudinal direction.Wherein it is preferred to, groove section 23 is rectangular channel, or long
Circle etc..
Synthesis is examined in terms of the intensity and through slot 12 for ensuring blade body 11 suppresses the effect two of air current flow separation
Consider, it is preferable that the area of through slot 12 is the 1/10 to 1/30 of the area of the lateral surface of blade body 11.It is further preferred that passing through
The area of groove 12 is 10mm2To 25mm2。
The shaping and processing of blade body 11 for convenience, it is preferable that the cross section profile of blade body 11 is circular arc.
It also may be such that designer can be processed and improve on the circular arc vane of prior art simultaneously, reduce difficulty of processing
And cost of manufacture.
In addition, referring to Fig. 7, present invention also offers a kind of centrifugal blower fan blade wheel, the centrifugal blower fan blade wheel includes coaxially setting
The preceding disk 3 and rear disk 4 put, the centrifugal blower fan blade wheel include the above-mentioned blade that multiple present invention are provided, multiple leaves
Piece be arranged on before between disk 3 and rear disk 4, and multiple blades being arranged circumferentially along preceding disk 3, blade body 11
The central axis that first side 13 rotates close to preceding disk 3.Inertia suction and centrifugal force are formed by the rotation of impeller so that gas
The central part of disk 3 before stream is initially entered, so as to cause the first side of air flow direction blade by inertia suction and centrifugal force
13, and then the medial surface attachment flowing of fraction arcuately blade body 11, fraction is by through slot 12 towards arc
The lateral surface flowing of blade body 11, to overcome the adverse pressure gradient of blade formation, reduces flow separation, the leaf weight of air-flow
And the stream pressure between adjacent blades, prevent from producing vortex between adjacent blades, to improve the air performance of impeller, drop
Low noise level and leaf weight.
Present invention also offers a kind of centrifugal blower for the above-mentioned centrifugal blower fan blade wheel that there is the present invention to provide, the centrifugation
Draught fan impeller is arranged in the spiral case, and the rear disk 4 is arranged in the rotating shaft of the motor.The leaf provided due to the present invention
Piece is easy to process simple, and can be effectively so that the separation of air-flow, it is thus possible to improve the performance of centrifugal blower, reduce from
The optimization cost of heart blower fan.
Wherein, centrifugal blower in another aspect of this invention, the centrifugal blower can be applied to applied to more multi-field
Culinary cuisine field, it is preferable that applied in range hood, i.e. range hood includes above-mentioned centrifugation wind provided by the present invention
Machine.So that the effect of the suction oil smoke of range hood is more preferably, it is not susceptible to that oil smoke is returned or oil smoke can not be discharged in time
Phenomenon, the user for considerably increasing range hood uses friendly.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, still, the present invention is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the present invention, a variety of letters can be carried out to technical scheme
Monotropic type, these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (13)
1. blade, the blade includes the blade body (11) of tabular extendable in the longitudinal direction, the blade body (11) it is transversal
Face profile is arc, and the blade body (11) has first side (13) and opposite with the first side (13) in horizontal direction
Second side (14), it is characterised in that offered on the blade body (11) along the longitudinal direction extend and connect arc
Through slot (12) inside and outside the blade body (11) of shape, the institute of the neighbouring blade body (11) of the through slot (12)
State first side (13).
2. blade according to claim 1, it is characterised in that in the cross section of the blade, the through slot (12)
The normal at position in the arc is N, and the fluting direction of the through slot (12) is M, wherein, the normal N and institute
It is 0 degree to 60 degree, preferably 0 degree to 15 degree to state the angle α between fluting direction M.
3. blade according to claim 1, it is characterised in that the through slot (12) has in a lateral direction puts down each other
It is spaced capablely and is respectively adjacent to the first side (13) and first trough rim (21) and the second trough rim (22) of second side (14),
First trough rim (21) is S, the width of the blade body (11) with the distance of the first side (13) in the direction of the width
Spend for W, wherein, S/W≤1/4, preferably 1/8 to 1/5.
4. blade according to claim 3, it is characterised in that first trough rim (21) and second trough rim (22) it
Between distance be 0.8-1.5mm.
5. blade according to claim 1, it is characterised in that the length of the through slot (12) in a longitudinal direction is institute
State the 1/2 to 4/5 of the length of blade body (11).
6. blade according to claim 1, it is characterised in that the through slot (12) is continuously to prolong along the longitudinal direction
The single groove stretched.
7. blade according to claim 1, it is characterised in that the through slot (12) includes interrupted along the longitudinal direction
Arrange as multiple grooves section (23) of a row.
8. blade according to claim 1, it is characterised in that the area of the through slot (12) is the blade body
(11) the 1/10 to 1/30 of the area of lateral surface.
9. blade according to claim 1, it is characterised in that the area of the through slot (12) is 10mm2To 25mm2。
10. blade according to claim 1, it is characterised in that the cross section profile of the blade body (11) is circular arc
Shape.
11. centrifugal blower fan blade wheel, the centrifugal blower fan blade wheel includes the preceding disk (3) and rear disk (4) being coaxially disposed, its feature exists
In the centrifugal blower fan blade wheel includes multiple blades as claimed in any of claims 1 to 10, multiple blades
It is arranged between the preceding disk (3) and the rear disk (4), and circumference of multiple blades along the preceding disk (3)
It is evenly arranged, the central axis of close preceding disk (3) rotation in the first side (13) of the blade body (11).
12. a kind of centrifugal blower, including spiral case and motor, it is characterised in that the centrifugal blower is included according to claim 11
Described centrifugal blower fan blade wheel, the centrifugal blower fan blade wheel is arranged in the spiral case, and the rear disk (4) is arranged on the electricity
In the rotating shaft of machine.
13. a kind of range hood, it is characterised in that the range hood includes centrifugal blower according to claim 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710044940.4A CN107061357B (en) | 2017-01-20 | 2017-01-20 | Blade, centrifugal blower fan blade wheel, centrifugal blower and range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710044940.4A CN107061357B (en) | 2017-01-20 | 2017-01-20 | Blade, centrifugal blower fan blade wheel, centrifugal blower and range hood |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107061357A true CN107061357A (en) | 2017-08-18 |
| CN107061357B CN107061357B (en) | 2019-10-18 |
Family
ID=59597913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710044940.4A Active CN107061357B (en) | 2017-01-20 | 2017-01-20 | Blade, centrifugal blower fan blade wheel, centrifugal blower and range hood |
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| Country | Link |
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| CN (1) | CN107061357B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107534A (en) * | 2019-06-05 | 2019-08-09 | 西北工业大学 | A kind of blade surface notching construction of structure parameterization |
| CN110374918A (en) * | 2019-07-31 | 2019-10-25 | 宁波方太厨具有限公司 | A kind of impeller and its control method for centrifugal blower |
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| US1622930A (en) * | 1921-10-08 | 1927-03-29 | Karman Theodor Von | Turbo machine |
| US6007300A (en) * | 1996-05-17 | 1999-12-28 | Calsonic Corporation | Centrifugal multiblade fan |
| CN101440822A (en) * | 2008-11-28 | 2009-05-27 | 中山大洋电机股份有限公司 | Axial fan and fan blade of centrifugal fan |
| CN104329290A (en) * | 2014-10-29 | 2015-02-04 | 珠海格力电器股份有限公司 | Centrifugal fan and air conditioner with same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US1622930A (en) * | 1921-10-08 | 1927-03-29 | Karman Theodor Von | Turbo machine |
| US6007300A (en) * | 1996-05-17 | 1999-12-28 | Calsonic Corporation | Centrifugal multiblade fan |
| CN101440822A (en) * | 2008-11-28 | 2009-05-27 | 中山大洋电机股份有限公司 | Axial fan and fan blade of centrifugal fan |
| CN104329290A (en) * | 2014-10-29 | 2015-02-04 | 珠海格力电器股份有限公司 | Centrifugal fan and air conditioner with same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107534A (en) * | 2019-06-05 | 2019-08-09 | 西北工业大学 | A kind of blade surface notching construction of structure parameterization |
| CN110374918A (en) * | 2019-07-31 | 2019-10-25 | 宁波方太厨具有限公司 | A kind of impeller and its control method for centrifugal blower |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107061357B (en) | 2019-10-18 |
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