CN110494654A - Telecentricity fan, mold for forming and fluid delivery system - Google Patents
Telecentricity fan, mold for forming and fluid delivery system Download PDFInfo
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- CN110494654A CN110494654A CN201780089424.1A CN201780089424A CN110494654A CN 110494654 A CN110494654 A CN 110494654A CN 201780089424 A CN201780089424 A CN 201780089424A CN 110494654 A CN110494654 A CN 110494654A
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- fan
- telecentricity
- blade
- blade body
- suction surface
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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
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Telecentricity fan (10) includes front side blade body (21A) and rear side blade body (21B).The shortest distance from any part on the suction surface of front side blade body (21A) to the pressure surface of rear side blade body (21B) is defined as interplane distance, position on suction surface in the maximum gauge part of front side blade body (21A) is defined as maximum gauge position (P2), range between maximum gauge position (P2) and leading edge potion (26) is defined as internal side diameter suction surface (24A), range between maximum gauge position (P2) and trailing edge potion (27) is defined as outside diameter suction surface (24B), the length from leading edge potion to trailing edge potion in the suction surface of front side blade body (21A) is defined as suction surface length.Interplane distance in internal side diameter suction surface is compared with the interplane distance on maximum gauge position.Among outside diameter suction surface, maximum gauge position and left from maximum gauge position suction surface length more than half length position between range in interplane distance it is substantially certain.Fluid can be inhibited to remove from blade body, and improve performance and reduce noise.
Description
Technical field
Technology disclosed in this specification is about telecentricity fan, mold for forming and fluid delivery system.The application master
It opens based on the Japanese patent application filed an application on April 10th, 2017 i.e. Patent 2017-077580 priority.It should
All contents recorded in Japanese patent application are applied in this specification by reference.
Background technique
There are multiple blade bodies (wing) with same size and same shape, to be arranged at equal intervals and with identical posture
Arrange the situation of be in line shape or round shape.The aspect that multiple blade bodies are constituted in the above described manner, the referred to as wing column.In wing column, greatly
Classification has both of deceleration wing column and speedup wing column.
Referring to Figure 34, so-called deceleration wing column are to make fluid down and increase pressure, in compressor, fan, pump etc.
It is used.The deceleration wing shown in Figure 34 column in, multiple gaps interval D arrangement.By the expansion of flow path, it is decelerated to from speed WA
Speed WB, kinetic energy are effectively resumed as pressure (pressurization).If steering angle is set as θ, the wing is arranged relative to fluid
Angle folded by normal is set as λ, then in the pressurization of deceleration wing column, for example, θ/2 WA > WB, λ >.
On the other hand, referring to Figure 35, so-called speedup wing column are to make fluid speedup and decline pressure, in turbine, windmill
It is used in.In the column of the speedup wing shown in Figure 35, from speed WA speedup to speed WB.In the accelerating function of speedup wing column,
For example, θ/2 WA < WB, λ <.In these wing column, the relationship of formula (1) below is set up, and substantial in the pressure loss
In the case of not generating, pressure variety is indicated by formula below (2).
WB/WA=cos λ/cos (θ-λ) ... formula (1)
P2-P1=ρ (WA2- WB2The formula of)/2 ... (2)
As disclosed in following patent documents 1,2, it is known to telecentricity fan.Telecentricity fan is generally the wing that slows down because of its actuation principle
Column.Specifically, multiple blade bodies are arranged in a manner of being equally spaced arranged in round shape in telecentricity fan.With fan
Rotation, and incoming fluid near spinning center flow out fluid from the periphery of fan.The length of circumferential direction, with spinning
The position at center is proportionally elongated far from (as diameter becomes larger).Between blade body and blade body adjacent to each other (
It is exactly interplane) flow path that is formed, with from the center of fan towards gently becoming larger on the outside of diameter direction.
When flow path expands, the flow velocity of the fluid in flow path is circulated in, the expansion with flow path is inversely proportionally slowed down (quality
Law of conservation).Therefore, multiple blade bodies in telecentricity fan, generally the deceleration wing column.As the blade body of telecentricity fan, in
What is be used generally in the past enumerates arc wing, the plate wing, aerofoil profile etc..These general blade bodies are arranged used as the wing
Telecentricity fan, be because of above-mentioned reason the deceleration wing column.
Patent document 1: No. 5469635 bulletins of Japanese Patent No..
Patent document 2: Japanese Unexamined Patent Publication 2005-016315 bulletin.
The flow velocity for flowing through the fluid of the interplane of telecentricity fan, as fluid is reduced towards diameter direction outside.Fluid is wrapped
The kinetic energy included square is proportionally reduced with what flow velocity reduced.The kinetic energy included by the fluid is relative to acting on blade body
When negative pressure is in a disadvantageous position, fluid is removed from blade body, and as the reduced performance of blade body, and noise increases.In telecentricity fan
Used known blade body is mostly to have the mainly shape for the purpose of overcoming high crushing or size person, accordingly, there exist
There is the case where increase of the removing or noise that are easy to cause fluid.
This disclosure one kind can seek performance raising and noise to reduce by inhibiting fluid to remove from blade body
Telecentricity fan, the telecentricity fan manufacture in the mold for forming that is used and the fluid conveying including the telecentricity fan
Device.
The telecentricity fan of the first form based on this disclosure, including multiple blade bodies, the multiple blade body tool
There is the trailing edge potion of the leading edge potion that air stream enters and air outflow, and is arranged each other across interval in circumferential direction；In multiple leaves
The each of sheet body is respectively formed with aerofoil, and the aerofoil extends between the leading edge potion and the trailing edge potion, and by the leaf
The opposite side positioned at the direction of rotation in the pressure surface and the blade body of the side positioned at direction of rotation in sheet body it is negative
Pressure surface is constituted；Multiple blade bodies include front side blade body and rear side blade body, and the rear side blade body is across the interval
And it is opposite with the front side blade body, and it is located at relative to the front side blade body opposite side of direction of rotation；If will from institute
State any part on the suction surface of front side blade body to the rear side blade body pressure surface the shortest distance be defined as it is described
Interplane distance in position, the front side blade body have the maximum gauge for providing the maximum gauge among the front side blade body
Part, and the position on the suction surface in the maximum gauge part is defined as maximum gauge position, by the front side blade
The maximum gauge position among the suction surface of body and the range between the leading edge potion are defined as internal side diameter suction surface, by institute
The range stated between the maximum gauge position and the trailing edge potion among the suction surface of front side blade body is defined as outside diameter
Suction surface will be defined as suction surface from the leading edge potion to the length of the trailing edge potion in the suction surface of the front side blade body
Length, then in the internal side diameter suction surface the interplane distance maximum gauge position on the interplane distance,
Among the outside diameter suction surface, the maximum gauge position with from the maximum gauge position leave the suction surface length
Interplane distance in range between the position of more than half length is substantially certain.
The telecentricity fan of the second form based on this disclosure, including multiple blade bodies, the multiple blade body tool
There is the trailing edge potion of the leading edge potion that air stream enters and air outflow, and is arranged each other across interval in circumferential direction；In multiple leaves
The each of sheet body is respectively formed with aerofoil, and the aerofoil extends between the leading edge potion and the trailing edge potion, and by the leaf
The opposite side positioned at the direction of rotation in the pressure surface and the blade body of the side positioned at direction of rotation in sheet body it is negative
Pressure surface is constituted；Multiple blade bodies it is each, have the internal side diameter blade part comprising the leading edge potion and be located at the internal diameter
On the outside of the diameter direction of side blade part and include the trailing edge potion outside diameter blade part；The internal side diameter blade part includes: maximum
Caliper portion provides the maximum gauge among the internal side diameter blade part；Enlarged, be located at the leading edge potion with it is described
Between maximum gauge part, with from the side of the leading edge potion towards on the outside of diameter direction and wing thickness gently thickens；And diminution portion
Point, it is located at the maximum gauge part more on the outside of diameter direction, with from the side of the maximum gauge part towards diameter side
Outward and wing thickness is gently thinning；The pressure surface of the suction surface of the internal side diameter blade part and the internal side diameter blade part,
The surface shape of convex is bent to the opposite side towards direction of rotation；The curvature of the suction surface of the internal side diameter blade part,
Greater than the curvature of the pressure surface of the internal side diameter blade part；The outside diameter blade part includes from the side of the trailing edge potion toward diameter side
The plate-like portion extended inwardly with roughly the same wing thickness；The positive pressure of the curvature of the suction surface of the plate-like portion and the plate-like portion
The curvature in face, the curvature of the suction surface of the respectively less than described internal side diameter blade part.
It, can also be in above-mentioned telecentricity fan: the pressure surface of the internal side diameter blade part and the outside diameter blade part
Pressure surface tangent each other；The suction surface of the suction surface of the internal side diameter blade part and outside diameter blade part tangent each other.
, can also be in above-mentioned telecentricity fan: the maximum gauge of the outside diameter blade part be less than the internal side diameter blade
The maximum gauge in portion；The camber of the outside diameter blade part, less than the camber of the internal side diameter blade part.
It, can also be in above-mentioned telecentricity fan: being equipped in the internal side diameter blade part in the side parallel relative to rotary shaft
To the through hole of extension；The through hole is formed as comprising the maximum gauge part, or respectively in the maximum gauge portion
Each formation one on the inside of the diameter direction divided and diameter direction outside.
It, can also be in above-mentioned telecentricity fan: in the internal diameter lateral lobe described in terms of the direction parallel relative to the rotary shaft
Formed in piece portion when the inner peripheral surface of the through hole, crescent moon (crescent Moon) shape is presented in the inner peripheral surface.
It, can also be in above-mentioned telecentricity fan: if the straight line for linking the leading edge potion and the trailing edge potion is defined as the wing
The length of the chord line is set as C by string, and the vertical line of the chord line will be hung down to from the suction surface of the blade body
Length is that the length of the vertical line on maximum position is set as t, the value of t/C is defined as camber ratio m, then multiple blades
Body it is each be formed as the camber ratio m be 0.25 or more.
, can also be in above-mentioned telecentricity fan: multiple blade bodies, which are configured to become the constant speed wing, to be arranged.
Above-mentioned telecentricity fan can also be formed by resin.
Mold for forming based on this disclosure is used in and carries out to the above-mentioned telecentricity fan based on this disclosure
Molding.
Fluid delivery system based on this disclosure includes pressure fan, and the pressure fan is by being based on this disclosure
Above-mentioned telecentricity fan and link with above-mentioned telecentricity fan and constitute the drive motor of multiple blade bodies rotations.
According to the telecentricity fan for including above-mentioned composition, flow path between the adjacent blade body in direction of rotation is formed as
As the central side from telecentricity fan is extended towards diameter direction outside with substantially certain flow path section product, and flow through in rotation side
To the flow velocity of the fluid between adjacent blade body, even if fluid is advanced from the central side of telecentricity fan toward diameter direction outside,
It can be always substantially certain.Even if fluid is also able to suppress the case where flow velocity declines, and also can toward traveling on the outside of diameter direction
Inhibit the phenomenon that kinetic energy included by fluid declines.Whereby, can make to kinetic energy included by fluid relative to acting on blade
Time until the negative pressure of body is in a disadvantageous position is upper and significantly elongated apart from upper limit (margin).Also it is able to suppress fluid certainly
The case where blade body is removed, result is that can either inhibit the phenomenon that the reduced performance as blade body, also can significantly be mitigated
Noise is generated because inhibiting the phenomenon that removing.
Detailed description of the invention
Fig. 1 is the perspective view for indicating the telecentricity fan 10 in embodiment one.
Fig. 2 is the front view for indicating the telecentricity fan 10 in embodiment one.
Fig. 3 is indicated the front view in region that the III line in Fig. 2 surrounds by amplification.
Fig. 4 is the front view of a part that amplification indicates telecentricity fan 10 shown in Fig. 3.
Fig. 5 is the front view for indicating the telecentricity fan 10A in embodiment two.
Fig. 6 is indicated the front view in region that the VI line in Fig. 5 surrounds by amplification.
Fig. 7 is the front view of a part (blade body 21) that amplification indicates telecentricity fan 10A shown in Fig. 6.
Fig. 8 is the perspective view for indicating the telecentricity fan 10B in embodiment three.
Fig. 9 is the front view of a part (blade body 21) that amplification indicates telecentricity fan 10B shown in fig. 8.
Figure 10 is the forward sight of a part (blade body 21) of the telecentricity fan 10C in the variation of amplification expression embodiment three
Figure.
Figure 11 is the front view of a part (blade body 21) of the telecentricity fan 10D in amplification expression embodiment four.
Figure 12 be amplification indicate embodiment four the 1st variation in telecentricity fan 10E a part (blade body 21) before
View.
Figure 13 be amplification indicate embodiment four the 2nd variation in telecentricity fan 10F a part (blade body 21) before
View.
Figure 14 is to indicate about used mold for forming 110 cuts open in embodiment five, in the manufacture of telecentricity fan 10
Face figure.
Figure 15 be indicate about in embodiment five, using the sectional view for the pressure fan 120 for having telecentricity fan 10.
Figure 16 is the sectional view for indicating the section shape along the pressure fan 120 on the XVI-XVI line in Figure 15.
Figure 17 be indicate about in embodiment five, using the sectional view for the air cleaner 140 for having telecentricity fan 10.
Figure 18 is front view of the amplification expression about a part (blade body 21) of the telecentricity fan of experimental example.
Figure 19 is to indicate about the experiment condition of experimental example and the table of experimental result.
Figure 20 is front view of the amplification expression about a part (blade body 21) of the telecentricity fan 10S1 of experimental example 1.
Figure 21 is front view of the amplification expression about a part (blade body 21) of the telecentricity fan 10S5 of experimental example 5.
Figure 22 is front view of the amplification expression about a part (blade body 21) of the telecentricity fan 10S9 of experimental example 9.
Figure 23 is to indicate as the experimental result about experimental example, the chart of the relationship of camber ratio m and air quantity.
Figure 24 is to indicate as the experimental result about experimental example, the chart of the relationship of camber ratio m and noise.
Figure 25 is to indicate as the experimental result about experimental example, the chart of camber ratio m and the relationship of consumption electric power.
Figure 26 is to indicate as the experimental result about experimental example, the chart of the relationship of maximum wing thickness and air quantity.
Figure 27 is to indicate as the experimental result about experimental example, the chart of the relationship of maximum wing thickness and noise.
Figure 28 is to indicate as the experimental result about experimental example, the chart of maximum wing thickness and the relationship of consumption electric power.
Figure 29 is to indicate as the experimental result about experimental example, the chart of the relationship of blade thickness ratio and air quantity.
Figure 30 is to indicate as the experimental result about experimental example, the chart of the relationship of blade thickness ratio and noise.
Figure 31 is to indicate as the experimental result about experimental example, the chart of blade thickness ratio and the relationship of consumption electric power.
Figure 32 is the front view of a part (blade body 21) that amplification indicates the telecentricity fan 10S7 based on experimental example 7.
Figure 33 is front view of the amplification expression about a part (blade body 21) of the telecentricity fan 10S7a of experimental example 7.
Figure 34 is the sectional view for indicating to be configured to become multiple blade bodies of deceleration wing column.
Figure 35 is the sectional view for indicating to be configured to become multiple blade bodies of speedup wing column.
Specific embodiment
For embodiment, it is illustrated while referring to attached drawing in following.Sometimes it has to identical part and phase
When part mark it is identical referring to appended drawing reference without the situation for the explanation being iteratively repeated.
[embodiment one]
Referring to Fig.1~Fig. 4 is illustrated for the telecentricity fan 10 in embodiment one.Fig. 1 and Fig. 2 is respectively to indicate telecentricity
The perspective view and front view of fan 10.Referring to Fig.1 and Fig. 2, telecentricity fan 10 have multiple blade bodies 21.Telecentricity fan 10 is made
There is the appearance of general cylindrical shape for entirety, and multiple blade bodies 21 are configured at the side of the general cylindrical shape.Telecentricity fan
10 are integrally formed by resin, are rotated centered on imaginary rotary shaft 101 toward direction shown in arrow 103.
Telecentricity fan 10 will be sent out by multiple blade bodies 21 of rotation from the air that inner circumferential side is taken into toward peripheral side.Telecentricity
Fan 10 is sent out air spinning central side toward diameter direction outside using centrifugal force (centrifugal force).Telecentricity fan 10 is used as multiple wing
Formula fan (Sirocco fan) functions, and is equipped on domestic electric appliances equipment etc., can be with low Reynolds number (Reynolds
Number) rotation number in region is used.
Telecentricity fan 10 further has periphery frame 12,13.Periphery frame 12,13 is formed as centered on rotary shaft 101
Ring-type extends.Periphery frame 12,13 configures in the axis direction of rotary shaft 101 across distance.In periphery, frame 13 is integrally formed useful
In the shaft sleeve part 16 that telecentricity fan 10 is linked to drive motor.Shaft sleeve part 16 is for example by rubber system part and metal workpieces structure
At integrated with periphery frame 13 by insertion forming.
Multiple blade bodies 21 are separated with each other in the circumferential direction centered on rotary shaft 101 to be positioned apart from.Multiple blade bodies
21 equally spaced configure in the circumferential direction centered on rotary shaft 101, rotary shaft 101 axis direction both ends by periphery frame
12 and periphery frame 13 support.Blade body 21 is erected on periphery frame 13, and is formed towards periphery frame 12 along rotary shaft 101
Axis direction extends.
Fig. 3 is indicated that the front view in region that the III line in Fig. 2 surrounds, Fig. 4 are that amplification indicates shown in Fig. 3 by amplification
Telecentricity fan 10 a part front view.In Fig. 3 and Fig. 4, show from the rotary shaft 101 relative to telecentricity fan 10
The shape of blade body 21 when (Fig. 1, Fig. 2) parallel direction is seen.
As shown in Figures 3 and 4, multiple blade bodies 21 have mutually the same shape.Each, the formation of multiple blade bodies 21
Even if for any position cutting in the axis direction of rotary shaft 101 also wing section shape having the same.
Blade body 21 has the end positioned at 21 inner circumferential side of blade body and in the leading edge potion 26 that enters of rotation Airflow and position
In 21 peripheral side of blade body end and in rotation Airflow go out trailing edge potion 27.Blade body 21 is formed as from 26 court of leading edge potion
It is tilted to trailing edge potion 27 toward the circumferential direction centered on rotary shaft 101.Blade body 21 is formed as from leading edge potion 26 towards trailing edge potion
27 tilt toward the direction of rotation of telecentricity fan 10.
The aerofoil 23 being made of pressure surface 25 and suction surface 24 is formed in blade body 21.Pressure surface 25 is in leading edge potion 26
Extend between trailing edge potion 27, the side of the direction of rotation in blade body 21.Suction surface 24 is in leading edge potion 26 and trailing edge potion 27
Between extend, the opposite side (back side of pressure surface 25) of the direction of rotation in blade body 21.In the rotation of telecentricity fan 10
When, (air-flow) is flowed with air is generated on aerofoil 23, and generate relatively large, opposite in suction surface 24 in pressure surface 25
Lesser pressure distribution.
Multiple blade bodies 21 include front side blade body 21A and rear side blade body 21B.Front side blade body 21A and rear side blade
Body 21B has mutually the same form and dimension.Rear side blade body 21B is opposite with front side blade body 21A across interval, and phase
It is located at the opposite side of direction of rotation (arrow 103) for front side blade body 21A.
It will be from any portion on the suction surface 24 of preceding lateral lobe sheet body 21A (part surrounded with dotted line 24R in Fig. 4)
Position to rear side blade body 21B pressure surface 25 (part surrounded with dotted line 25R in Fig. 4) the shortest distance, be defined as described
Interplane distance on any part.For example, position P1~P6 on the suction surface 24 of front side blade body 21A, is prescribed respectively
Interplane distance L1~L6.
Front side blade body 21A has the maximum gauge part of the maximum gauge among the blade body 21A of regulation front side (with arrow
Part shown in H).So-called maximum gauge part, be depicted between suction surface 24 and pressure surface 25 with suction surface 24 and
, it is specified that the friendship of the inscribed circle and suction surface 24 in the case of circle among the circle of 25 inscribe of pressure surface with maximum size
The intersection point of point and the inscribed circle and pressure surface 25, provides maximum gauge part in a manner of comprising these two intersection point.Portion
Position P2 is equivalent to the position (hereinafter referred to as maximum gauge position P2) on the suction surface 24 in the maximum gauge part.
By the range definition between the maximum gauge position P2 and leading edge potion 26 among the suction surface 24 of front side blade body 21A
For internal side diameter suction surface 24A.By among the suction surface 24 of front side blade body 21A maximum gauge position P2 and trailing edge potion 27 it
Between range be defined as outside diameter suction surface 24B.Further, in the suction surface 24 of front side blade body 21A from leading edge potion 26
Length (length of the part surrounded with dotted line 24R in Fig. 4) to trailing edge potion 27 is defined as suction surface length 24L.It is so-called
Suction surface length 24L, be internal side diameter suction surface 24A length and outside diameter suction surface 24B length aggregate value.
In the telecentricity fan 10 of present embodiment, interplane distance on internal side diameter suction surface 24A is configured to more maximum thickness
Spend the interplane distance L2 long on the P2 of position.The interplane distance on any part P1 between maximum gauge position P2 and leading edge potion 26
L1 is configured to compared with the interplane distance L2 long on the P2 of maximum gauge position.In present embodiment, it is configured to from maximum gauge position
Set P2 close to leading edge potion 26 and interplane distance it is gently elongated.
Among outside diameter suction surface 24B, maximum gauge position P2 with from maximum gauge position P2 leave suction surface length 24L
More than half length position between range interplane distance, be configured to substantially certain.It is so-called substantially certain, refer to the wing
Between distance include interplane distance L2 at least maximum gauge position P2 ± 25% in the range of, preferably wing span
From include within ± 15% of interplane distance L2 on the P2 of maximum gauge position in the range of, more preferably interplane distance comprising
In the range of within ± 10% of the interplane distance L2 on the P2 of maximum gauge position.
The wing on interplane distance L2, position P3 in the telecentricity fan 10 of present embodiment, on the P2 of maximum gauge position
Between interplane distance L4 on distance L3 and position P4 be identical value.Position P4 and position among outside diameter suction surface 24B
Range between P5, with from position P4 close to position P5 and interplane distance gently shorten.Interplane distance L5 on the P5 of position,
And the interplane distance L6 on the P6 of position is identical value.
If enumerating concrete example, suction surface length 24L is 28.3mm, the wing on maximum gauge position P2 and position P3, P4
Between distance (L2~L4) be 3.6mm, the interplane distance (L5, L6) on position P5, P6 is 3.4mm.Maximum gauge position P2, with
The wing span in range between the position for the Length Quantity that 21.4mm is left in side from maximum gauge position P2 towards trailing edge potion 27
From being substantially certain.
(functions and effects)
If rotating telecentricity fan 10, shown in arrow 102 as shown in figure 1, it is produced from the inflow of leading edge potion 26, by aerofoil 23
And the air flowing flowed out from trailing edge potion 27.The telecentricity fan 10 of present embodiment includes to meet such as above-mentioned interplane distance
Multiple blade bodies 21.Flow path between the adjacent blade body 21 in direction of rotation is formed as with from the center of telecentricity fan 10
Side is extended towards diameter direction outside with substantially certain flow path section product.It flows through between the adjacent blade body 21 in direction of rotation
The flow velocity of fluid also can be always substantially certain even if fluid is advanced from the central side of telecentricity fan 10 toward diameter direction outside.
Multiple blade bodies 21 in present embodiment, to constitute and slowing down wing column or the speedup wing arranges the different constant speed wings and arranges.
Even if fluid is also able to suppress the case where flow velocity declines, and can also inhibit kinetic energy included by fluid toward traveling on the outside of diameter direction
The case where decline.Whereby, can make to kinetic energy included by fluid relative to the negative pressure for acting on blade body 21 be in a disadvantageous position for
Time only is upper and significantly elongated apart from upper limit.Also it is able to suppress the case where fluid is removed from blade body 21, result is,
It can either inhibit the phenomenon that the reduced performance as blade body 21, also can significantly mitigate and generate noise because inhibiting removing
The case where.
[embodiment two]
Referring to Fig. 5~Fig. 7, it is illustrated for the telecentricity fan 10A in embodiment two.Fig. 5 is to indicate telecentricity fan 10A
Front view.Fig. 6 is indicated that the front view in region that the VI line in Fig. 5 surrounds, Fig. 7 are that amplification indicates shown in Fig. 6 by amplification
The front view of a part (blade body 21) of telecentricity fan 10A.
As shown in figure 5, telecentricity fan 10A in embodiment two also with the telecentricity fan 10 (Fig. 2) in embodiment one
Similarly, as a whole with the appearance of general cylindrical shape, and multiple blade bodies 21 are configured at the side of the general cylindrical shape.
Telecentricity fan 10A is integrally formed by resin, is rotated centered on imaginary rotary shaft 101 toward direction shown in arrow 103.It is real
The telecentricity fan 10 in mode one and the telecentricity fan 10A in embodiment two are applied, it is not identical in point below.
As shown in FIG. 6 and 7, multiple blade bodies 21 it is each have the internal side diameter blade part 21M comprising leading edge potion 26,
With the outside diameter blade part 21N comprising trailing edge potion 27.Outside diameter blade part 21N, outside the diameter direction of internal side diameter blade part 21M
Side.The internal side diameter blade part 21M of present embodiment, by what is surrounded among blade body 21, by leading edge potion 26 and point P10~P12
Part.
Internal side diameter blade part 21M includes maximum gauge part 21Ma, enlarged 21Mb and diminution part 21Mc.It is maximum
Caliper portion 21Ma is the part for providing the maximum gauge h2 among internal side diameter blade part 21M.Maximum gauge h2 is, for example,
3.6mm.Point P11 indicates the position on the suction surface 24 in the 21Ma of maximum gauge part.
Enlarged 21Mb is located further forward the side of edge 26 for the relatively maximum gauge part 21Ma among internal side diameter blade part 21M
Part.Enlarged 21Mb is located between leading edge potion 26 and maximum gauge part 21Ma, the wing thickness h1 of enlarged 21Mb
(Fig. 6) is configured to gently thicken with from the side of leading edge potion 26 towards diameter direction outside.
Reducing part 21Mc is that the relatively maximum gauge part 21Ma among internal side diameter blade part 21M is more leaned on the outside of diameter direction
Part.It reduces part 21Mc to be located between maximum gauge part 21Ma and outside diameter blade part 21N, the wing for reducing part 21Mc is thick
H3, h4 are configured to gently thinning from the side of maximum gauge part 21Ma towards diameter direction outside.
The pressure surface 25M of the suction surface 24M and internal side diameter blade part 21M of internal side diameter blade part 21M all have towards rotation
The opposite side in direction (arrow 103 shown in fig. 6) bends to the surface shape of convex.The suction surface 24M of internal side diameter blade part 21M
Curvature, greater than the curvature of the pressure surface 25M of internal side diameter blade part 21M.
Outside diameter blade part 21N includes from the side of trailing edge potion 27 toward diameter direction inside with roughly the same wing thickness h6, h5
The plate-like portion 21Np that (Fig. 6) extends.Wing thickness h6, h5 is, for example, 1.0mm.The curvature and plate of the suction surface 24Np of plate-like portion 21Np
The curvature of the pressure surface 25Np of shape portion 21Np, the respectively less than curvature of the suction surface 24M of internal side diameter blade part 21M.
(functions and effects)
If rotating telecentricity fan 10A, it is produced from the inflow of leading edge potion 26, passes through what is flowed out on aerofoil 23 from trailing edge potion 27
Air flowing.The telecentricity fan 10A of present embodiment includes to meet as the above-mentioned wing is thick and multiple blade bodies 21 of curvature.
Flow path between the adjacent blade body 21 in direction of rotation is formed as with from the central side of telecentricity fan 10A towards diameter direction
Outside is extended with substantially certain flow path section product.The flow velocity of the fluid between the adjacent blade body 21 in direction of rotation is flowed through,
It also can be always substantially certain even if fluid is advanced from the central side of telecentricity fan 10A toward diameter direction outside.
Multiple blade bodies 21 in present embodiment, also for constitute from slow down the wing column or the speedup wing arrange the different constant speed wings
Column.Even if fluid is also able to suppress the case where flow velocity declines toward traveling on the outside of diameter direction, and can also inhibit to move included by fluid
The case where capable of declining.Whereby, can make to be in a disadvantageous position to kinetic energy included by fluid relative to the negative pressure for acting on blade body 21
Until time it is upper and significantly elongated apart from upper limit.Also it is able to suppress the case where fluid is removed from blade body 21, as a result
For that can either inhibit the phenomenon that the reduced performance as blade body 21, also can significantly mitigate to generate because inhibiting removing and make an uproar
The case where sound.
[the 1st variation of embodiment two]
Referring to Fig. 7, as suitable embodiment, as long as the pressure surface of internal side diameter blade part 21M and outside diameter blade part 21N
Pressure surface on the position of point P10 each other tangent and smoothly connect, the suction surface of internal side diameter blade part 21M and outside diameter blade
The suction surface of portion 21N on the position of point P12 each other tangent and smoothly connect just.According to the composition, flowed through in air
When on direction of rotation between adjacent blade body 21, lift is effectively generated in air flowing, can be further increased whereby
Performance as blade body 21.
[the 2nd variation of embodiment two]
Referring to Fig. 7, as preferred embodiment, as long as the maximum gauge of outside diameter blade part 21N is less than internal side diameter blade part
The maximum gauge of 21M is just.Further, as long as the camber t2 of outside diameter blade part 21N is curved less than internal side diameter blade part 21M
Spend t1 just.The camber t1 of the camber t2 and internal side diameter blade part 21M of outside diameter blade part 21N are as defined hereinafter
Value.Point P10 is located among the pressure surface 25 of blade body 21, the pressure surface of internal side diameter blade part 21M is with outside diameter blade part 21N's
Between pressure surface.
The straight line LN1 for describing the leading edge potion 26 and point P10 in connection internal side diameter blade part 21M, will be from internal side diameter blade part
Suction surface in 21M acts the length for hanging down to that the length of the vertical line of straight line LN1 is the vertical line W1 on maximum position (point P11),
It is defined as the camber t1 of internal side diameter blade part 21M.Describe the point P10 and trailing edge potion 27 in connection outside diameter blade part 21N
Straight line LN2, the length that the vertical line of straight line LN2 will be hung down to from the suction surface in outside diameter blade part 21N is maximum position
The length of vertical line W2 on P13 is defined as the camber t2 of outside diameter blade part 21N.
According to the above configuration, when being flowed through in air between blade body 21 adjacent on direction of rotation, have in air flowing
Effect ground generates lift, can further increase the performance as blade body 21 whereby.It as a result is that can either inhibit as blade body
The case where 21 reduced performance, also can significantly mitigate and generate noise because inhibiting the phenomenon that removing.
[embodiment three]
Referring to Fig. 8 and Fig. 9, it is illustrated for the telecentricity fan 10B in embodiment three.Fig. 8 is to indicate telecentricity fan 10B
Perspective view.Fig. 9 is the front view of a part (blade body 21) that amplification indicates telecentricity fan 10B shown in fig. 8.
As shown in figure 8, the telecentricity fan 10B in embodiment three also (schemes with the telecentricity fan 10 in embodiment one, two
2), 10A (Fig. 5) similarly, as a whole with the appearance of general cylindrical shape, and multiple blade bodies 21 be configured at it is described substantially round
The side of tubular.Telecentricity fan 10B is integrally formed by resin, toward 103 institute of arrow centered on imaginary rotary shaft 101 (Fig. 8)
The direction shown rotates.Telecentricity fan 10A (Fig. 5) in embodiment two and the telecentricity fan 10B in embodiment three (Fig. 8,
Fig. 9), not identical in point below.
In telecentricity fan 10B, through hole 29 is equipped in internal side diameter blade part 21M (Fig. 9).Through hole 29 is formed as
The maximum gauge part 21Ma of internal side diameter blade part 21M prolongs in the parallel direction of the rotary shaft 101 relative to telecentricity fan 10B
It stretches.
According to the above configuration, it can reduce the weight of blade body 21, and can mitigate and reduce the heavy wall in blade body 21
Shrink mark (sink mark) when the forming that portion (near the 21Ma of maximum gauge part) can generate.Furthermore it is possible to significantly inhibit
The imbalance that telecentricity fan 10B is generated when rotated, further can also reduce the vibrating noise of telecentricity fan 10B.
[variation of embodiment three]
Figure 10 is the forward sight of a part (blade body 21) of the telecentricity fan 10C in the variation of amplification expression embodiment three
Figure.In telecentricity fan 10C, total 2 through hole 29A, 29B are formed in internal side diameter blade part 21M.Through hole 29A,
29B extends in the parallel direction of the rotary shaft relative to telecentricity fan 10C.Through hole 29A, 29B are respectively in internal diameter lateral lobe piece portion
One is formed with each on the outside of diameter direction on the inside of the diameter direction of the maximum gauge part 21Ma of 21M.
According to the above configuration, it can further mitigate the weight of blade body 21, and can more mitigate and reduce in leaf
The shrink mark when forming that the thick wall portion (near the 21Ma of maximum gauge part) of sheet body 21 can generate.Furthermore it is possible to significantly press down
The imbalance that telecentricity fan 10C processed is generated when rotated, also can further reduce the vibrating noise of telecentricity fan 10C.
[other compositions of embodiment one, three]
In above-mentioned embodiment three (Fig. 9) and its variation (Figure 10), in terms of the direction parallel relative to rotary shaft 101
Formed in internal side diameter blade part 21M when the inner peripheral surface of through hole 29,29A, 29B, round is presented in the inner peripheral surface.
It is not limited to such as above-mentioned composition, it can also be as shown in Fig. 3, Fig. 4 in embodiment one, from relative to rotation
When the inner peripheral surface of through hole 29 formed in internal side diameter blade part 21M is seen in the parallel direction of axis 101, the inner peripheral surface is presented
Crescent moon shape.By the through hole 29 of crescent moon shape, can also obtain as in the explanation of above embodiment three and its variation
Functions and effects as explanation, and can also expect that the beauty as telecentricity fan improves.
[embodiment four]
Referring to Fig.1 1, it is illustrated for the telecentricity fan 10D in embodiment four.Figure 11 is that amplification indicates telecentricity fan 10D
A part (blade body 21) front view.
The telecentricity fan in telecentricity fan 10D and embodiment one~tri- in embodiment four, in telecentricity fan 10D
Concave notch 29C is formed with to replace the point of through hole 29 (through hole 29A, 29B) not identical.Notch 29C is with from internal diameter
The part of close outside diameter blade part 21N in the longitudinal direction of the pressure surface 25 of side blade part 21M is close to the side of leading edge potion 26
The point that formula extends is not identical as the composition of through hole 29.
By above-mentioned composition, it also can further mitigate the weight of blade body 21, and more can mitigate and reduce
The shrink mark when forming that the thick wall portion (near the 21Ma of maximum gauge part) of blade body 21 can generate.It is further possible to substantially
The imbalance that ground inhibits telecentricity fan 10D to generate when rotated, and the vibration that also can further reduce telecentricity fan 10D is made an uproar
Sound.
[the 1st variation of embodiment four]
Referring to Fig.1 2, it is illustrated for the telecentricity fan 10E in the 1st variation of embodiment four.Figure 12 is that amplification indicates
The front view of a part (blade body 21) of telecentricity fan 10E.
Telecentricity fan 10E (Figure 12) in the present embodiment and telecentricity fan 10D (Figure 11) in embodiment four with
Under point it is not identical, it is, notch 29C in telecentricity fan 10E includes with from the pressure surface 25 of internal side diameter blade part 21M
Longitudinal direction outside diameter blade part 21N near part, close to mode part 29C1, He Yiyuan for extending of leading edge potion 26
The part 29C2 that mode from leading edge potion 26 extends.
By above-mentioned composition, it also can further mitigate the weight of blade body 21, and more can mitigate and reduce
The shrink mark when forming that the thick wall portion (near the 21Ma of maximum gauge part) of blade body 21 can generate.It is further possible to substantially
The imbalance that ground inhibits telecentricity fan 10E to generate when rotated, and the vibration that also can further reduce telecentricity fan 10E is made an uproar
Sound.
[the 2nd variation of embodiment four]
Referring to Fig.1 3, it is illustrated for the telecentricity fan 10F in the 2nd variation of embodiment four.Figure 13 is that amplification indicates
The front view of a part (blade body 21) of telecentricity fan 10F.
The telecentricity fan in telecentricity fan 10F (Figure 13) and above-mentioned each embodiment in present embodiment, in telecentricity
The point that internal side diameter blade part 21M and outside diameter blade part 21N in fan 10F is formed separately from each other is not identical.
By above-mentioned composition, it also can further mitigate the weight of blade body 21, and more can mitigate and reduce
The shrink mark when forming that the thick wall portion (near the 21Ma of maximum gauge part) of blade body 21 can generate.It is further possible to substantially
The imbalance that ground inhibits telecentricity fan 10F to generate when rotated, and the vibration that also can further reduce telecentricity fan 10F is made an uproar
Sound.
[embodiment five]
In present embodiment, for the telecentricity fan 10 (Fig. 1) in embodiment one manufacture when used mold for forming,
It is illustrated using the pressure fan and air cleaner that have telecentricity fan 10.In following disclosure in present embodiment,
Be applicable to above embodiment two~tetra- and these variation in telecentricity fan.
(mold for forming 110)
Figure 14 is the sectional view for indicating the used mold for forming 110 in the manufacture of telecentricity fan 10.Mold for forming
110 have fixed side mold 114 and movable side mold 112.By fixed side mold 114 and movable side mold 112, it is specified that with remote
The roughly the same shape of heart fan 10, the chamber 116 for injecting liquid resin.
In mold for forming 110, not scheming for the mobility for improving the resin for being flowed into chamber 116 also can be set
The heater shown.Such as setting of above-mentioned heater, such as keep intensity increased using AS containing glass fibre is resinoid
It is especially effective when the situation of synthetic resin.
(pressure fan 120)
Figure 15 is the sectional view indicated using the pressure fan 120 for having telecentricity fan 10.Figure 16 is to indicate along the XVI- in Figure 15
The sectional view of the section shape of pressure fan 120 on XVI line.Pressure fan 120 has drive motor 128 in exterior clamshell 126
(Figure 16), telecentricity fan 10 and clamshell 129.
The output shaft of drive motor 128 links with the axle sleeve 16 (Figure 16) of telecentricity fan 10.Clamshell 129 has guiding wall
129a.Guiding wall 129a is formed by substantially 3/4 circular arc of the configuration on the periphery of telecentricity fan 10.Guiding wall 129a is formed as
The air-flow generated by the rotation of blade body 21 is guided toward the direction of rotation of blade body 21 on one side, makes the speed of air-flow on one side
Increase.
Sucting 130 (Figure 16) and blowing portion 127 are formed in clamshell 129.Sucting 130 is formed as being located at rotary shaft
In 101 extension.A part that blowing portion 127 is formed as bootstrap wall 129a is opened toward a side of the tangential direction of guiding wall 129a
It puts.Blowing portion 127 is formed as the side square tube outstanding of the tangential direction of the past guiding wall 129a of a part of bootstrap wall 129a
Shape.
By the driving of drive motor 128 (Figure 16), telecentricity fan 10 is rotated toward direction shown in arrow 103 (Figure 15).
At this point, air is taken into from sucting 130 to clamshell 129, from the inner circumferential side space 131 of telecentricity fan 10 toward peripheral side space
132 send out.It is sent to the air in peripheral side space 132, is flowed along direction shown in arrow 104 in circumferential direction, passes through blowout
It blows toward external in portion 127.
(air cleaner 140)
Figure 17 is the sectional view indicated using the air cleaner 140 for having telecentricity fan 10.Air cleaner 140 has shell
144, pressure fan 150, channel 145 and (HEPA:High Efficiency Particulate Air Filter) strainer 141.
Shell 144 has rear wall 144a and roof 144b.It is formed in shell 144 for air cleaner will to be provided with
The suction inlet 142 of 140 indoor air sucking.Suction inlet 142 is formed in rear wall 144a.It is formed further in shell 144
Blow-off outlet 143, the blow-off outlet 143 is by peace and quiet air towards indoor releasing.Blow-off outlet 143 is formed in roof 144b.It is general and
Speech, air cleaner 140 is set to wall side so that rear wall 144a and indoor wall are opposite.
Strainer 141 is configured at the inside of shell 144 in the mode opposite with suction inlet 142.It is led by suction inlet 142
Enter to the air inside shell 144, is removed foreign matter by by strainer 141, becomes peace and quiet air.
Indoor air is attracted to inside shell 144 by pressure fan 150, and the air by strainer 141 after peace and quiet passes through
The past indoor submitting of blow-off outlet 143.Pressure fan 150 has telecentricity fan 10, clamshell 152 and drive motor 151.Clamshell 152 has
There is guiding wall 152a.Sucting 153 and blowing portion 154 are formed in clamshell 152.
Channel 145 is set on pressure fan 150, is provided as drawing peace and quiet air from clamshell 152 toward blow-off outlet 143
The wind-guiding road led.Channel 145 is connect with its lower end with blowing portion 154 and the shape as square-tube-shaped of the upper end opening.It is logical
Road 145 is configured to guide from the peace and quiet air that blowing portion 154 is blown out towards blow-off outlet 143 in laminar flow.
It is including in the air cleaner 140 such as above-mentioned composition, by the driving of pressure fan 150, blade body 21 is carried out
Rotation, indoor air are sucked into shell 144 from suction inlet 142.At this point, being generated between suction inlet 142 and blow-off outlet 143
Air flows, and the foreign matters such as dust contained in the air being inhaled into are removed by strainer 141.
The peace and quiet air obtained by strainer 141, is sucked into inside clamshell 152.At this point, being sucked into clamshell 152
Peace and quiet air, by the guiding wall 152a around blade body 21 become laminar flow.The air for having become laminar flow, along guiding wall
152a and be directed to blowing portion 154, blow in channel 145 from blowing portion 154.Air is empty from blow-off outlet 143 towards outside
Between release.
According to air cleaner 140 as constituted above, can by the telecentricity fan 10 for using draft capacity excellent, and
Reduce the consumption electric power of drive motor 151.Whereby, it can be realized the air cleaner 140 for facilitating energy-saving.In this embodiment party
Though being illustrated for enumerating air cleaner in formula, the telecentricity fan in above-mentioned each embodiment can also be suitable for
In other devices for sending out fluid such as air conditioner (air-conditioning) or humidifier, cooling device, air interchanger.
For example, if being used in the sirocco fan (Sirocco fan) for being used in hanging ceiling-type air-conditioning etc.
Telecentricity fan in the respective embodiments described above then can be improved performance, reduce noise.In addition, it is certain to make noise, and make
The size reduction of fan, and then the size reduction etc. of ontology.The result of miniaturization is that can also be provided as the air-conditioning of wall hanging.
The air-conditioning of hanging ceiling-type must be constructed on a large scale, but the room air conditioner of wall hanging just can be complete using general construction
At, and existing demand is also larger.In addition, the telecentricity fan in above-mentioned each embodiment can also be applied to be built in wall hanging
Cross flow fan (cross flow fan) in room air conditioner.
[experimental example]
8~Figure 33 referring to Fig.1 is illustrated for the experimental example with the respective embodiments described above associated carried out.When illustrating,
As shown in figure 18, the straight line of the leading edge potion 26 and trailing edge potion 27 that link blade body 21 is defined as chord line LN3.By chord line
The length of LN3 is set as chord-length C.The length that the vertical line of chord line LN3 will be hung down to from the suction surface 24 of blade body 21 is most
The length of vertical line LN4 on big position P15 is set as camber t.The value of camber t/ chord-length C is defined as camber ratio m.
As shown in figure 19, as Examples 1 to 9, prepare total 9 kinds of telecentricity fan.Telecentricity as experimental example 1~9
Common condition in fan, is set as 236mm for the outer diameter of fan, sets height to 80mm, by the wing chord of blade body 21
Long C is set as 20mm, and the minimum wing thickness of blade body 21 is set as 1mm.
(experimental example 1)
As shown in FIG. 19 and 20, in the telecentricity fan 10S1 of experimental example 1, camber t is set as 4.0mm, the maximum wing is thick
It is set as 1.0mm.Camber ratio m (camber t/ chord-length C) is 0.2, indicates that the blade thickness ratio of the ratio between minimum wing thickness and maximum wing thickness is
1.0。
(experimental example 2~4)
As shown in figure 19, in the telecentricity fan of experimental example 2~4, camber t is set as 4.22mm, 4.5mm, 5.0mm respectively,
Maximum wing thickness is set as 1.55mm, 2.8mm, 3.15mm.Camber ratio m (camber t/ chord-length C) is respectively 0.211,0.225,
0.25, blade thickness ratio is respectively 1.55,2.8,3.15.
(experimental example 5)
As shown in Figure 19 and Figure 21, in the telecentricity fan 10S5 of experimental example 5, camber t is set as 5.6mm, the maximum wing is thick
It is set as 3.3mm.Camber ratio m (camber t/ chord-length C) is 0.28, blade thickness ratio 3.3.
(experimental example 6~8)
As shown in figure 19, in the telecentricity fan of experimental example 6~8, camber t is set as 6.6mm, 7.2mm, 8.0mm respectively,
Maximum wing thickness is set as 3.46mm, 3.6mm, 3.67mm.Camber ratio m (camber t/ chord-length C) is respectively 0.33,0.36,
0.4, blade thickness ratio is respectively 3.46,3.6,3.67.
(experimental example 9)
As shown in Figure 19 and Figure 22, in the telecentricity fan 10S9 of experimental example 9, camber t is set as 8.2mm, the maximum wing is thick
It is set as 3.84mm.Camber ratio m (camber t/ chord-length C) is 0.41, blade thickness ratio 3.84.
(relationship of camber ratio m and air quantity)
9 and Figure 23 referring to Fig.1 rotates the telecentricity fan of the experimental example 1~9 with above-mentioned each condition with 1250rpm, to wind
Amount obtains the result as shown in the table of Figure 19 under being determined.Figure 23 is by the figure after table pictorialization shown in Figure 19.It can
Know that air quantity also increases as camber ratio m increases.If consider air quantity increment rate, known to preferably camber ratio m be 0.25 with
On.
(relationship of camber ratio m and noise)
9 and Figure 24 referring to Fig.1 makes the telecentricity fan with the experimental example 1~9 of above-mentioned each condition with air quantity 7.5m3/ min's
Mode rotates, and under being determined to noise, obtains the result as shown in the table of Figure 19.Figure 24 is by table shown in Figure 19
Figure after pictorialization.The slip for considering noise will also realize that preferably camber ratio m is 0.25 or more.
(relationship of camber ratio m and consumption electric power)
9 and Figure 25 referring to Fig.1 makes the telecentricity fan with the experimental example 1~9 of above-mentioned each condition with air quantity 7.5m3/ min's
Mode rotates, and is offseting under power consumption power is determined, is obtaining the result as shown in the table of Figure 19.Figure 25 is will be shown in Figure 19
Table pictorialization after figure.The slip for considering consumption electric power will also realize that preferably camber ratio m is 0.25 or more.
(relationship of maximum wing thickness and air quantity)
Figure 26 be indicate to have the maximum wing of the experimental example 1~9 of above-mentioned each condition it is thick, with make the telecentricity fan of experimental example 1~9 with
The chart of the relationship of air quantity obtained when 1250rpm rotates.It knows to increase with maximum wing thickness, the air quantity pass linear with outline
System increases.
(relationship of maximum wing thickness and noise)
Figure 27 be indicate to have the maximum wing of the experimental example 1~9 of above-mentioned each condition it is thick, with make the telecentricity fan of experimental example 1~9 with
Air quantity is 7.5m3The chart of the mode of/min relationship of generated noise when rotating.If maximum wing thickness is more than 2.8mm known to
(experimental example 3 shown in Figure 19), then noise is rapidly reduced.Know that in maximum wing thickness be 3.6mm (experimental example shown in Figure 19
7) in the case of, noise is minimum.
(relationship of maximum wing thickness and consumption electric power)
Figure 28 be indicate to have the maximum wing of the experimental example 1~9 of above-mentioned each condition it is thick, with make the telecentricity fan of experimental example 1~9 with
Air quantity is 7.5m3The chart of the relationship for the electric power that the mode of/min consumes when rotating.If maximum wing thickness known to is more than 3.15mm (figure
Experimental example 4 shown in 19), then it consumes electric power and rapidly reduces.Know that in maximum wing thickness be 3.6mm (experimental example shown in Figure 19
7) in the case of, consumption electric power is minimum.
(relationship of blade thickness ratio and air quantity)
Figure 29 be indicate have above-mentioned each condition experimental example 1~9 blade thickness ratio, with make the telecentricity fan of experimental example 1~9 with
The chart of the relationship of air quantity (relative value) obtained when 1250rpm rotates.It knows to increase with blade thickness ratio, air quantity is with outline
Linear relationship increases.
(relationship of blade thickness ratio and noise)
Figure 30 is to indicate the blade thickness ratio with the experimental example 1~9 of above-mentioned each condition and make the telecentricity fan of experimental example 1~9 with wind
Amount is 7.5m3The chart of the relationship for the noise (relative value) that the mode of/min generates when rotating.If blade thickness ratio known to is more than 2.8mm
(experimental example 3 shown in Figure 19), then noise is rapidly reduced.Know that in blade thickness ratio be 3.6mm (experimental example 7 shown in Figure 19)
In the case of, noise is minimum.
(relationship of blade thickness ratio and consumption electric power)
Figure 31 is to indicate the blade thickness ratio with the experimental example 1~9 of above-mentioned each condition and make the telecentricity fan of experimental example 1~9 with wind
Amount is 7.5m3The chart of the relationship for the electric power (relative value) that the mode of/min consumes when rotating.If knowing, blade thickness ratio is more than
3.15mm (experimental example 4 shown in Figure 19), then consume electric power and rapidly reduce.Know that in blade thickness ratio be 3.6mm (shown in Figure 19
Experimental example 7) in the case of, consumption electric power be minimum.
(summary)
According to above experimental example 1~9 as a result, from air quantity increase, lower noise and consumption electric power reduce from the viewpoint of,
If camber ratio m known to is 0.25 or more, can obtain preferred improvement.
(other experimental examples)
Figure 32 is the front view of a part that amplification indicates the telecentricity fan 10S7 based on above-mentioned experimental example 7.In experimental example 7
In telecentricity fan 10S7 (Figure 19), camber t is set as 7.2mm, maximum wing thickness is set as 3.6mm.Camber ratio m (camber t/
Chord-length C) it is 0.36, blade thickness ratio 3.6.According to such as above-mentioned telecentricity fan 10S7, as shown in figure 19, air quantity increases by 8%, makes an uproar
Sound reduces 1.87dB, and consumption electric power reduces 6%.
Telecentricity fan 10S7a shown in Figure 33, in the point that camber t is set as to 7.2mm, with telecentricity fan shown in Figure 32
10S7 is common, but in telecentricity fan 10S7a, and maximum wing thickness is set as 1.0mm.The camber ratio m of telecentricity fan 10S7a is (curved
Spend t/ chord-length C) with telecentricity fan 10S7 be all 0.36, but the blade thickness ratio of telecentricity fan 10S7a be 1.0.According to such as above-mentioned
Telecentricity fan 10S7a, air quantity increase by 4%, and noise increases 1dB, and consumption electric power reduces 1%.
According to the comparison of above telecentricity fan 10S7,10S7a it is found that by not only camber ratio m, the maximum wing is thick or the wing is thick
Than also being optimized, air quantity can be sought to increase, noise is reduced and consumption electric power is reduced.
More than, though being illustrated for embodiment and its variation and experimental example, above-mentioned disclosure is in institute
It is example on some points, the content not limited.Technical range of the invention is to indicate by claim, and anticipate
Figure include and all changes in the meaning and range of claim equalization.
Published content in this specification can be used in industry mainly in air cleaner or air conditioner etc.
In domestic electric appliances equipment with air blowing function.
The explanation of appended drawing reference
10,10A, 10B, 10C, 10D, 10E, 10F, 10S7a, 10S1,10S5,10S9,10S7: telecentricity fan
12,13: periphery frame
16: axle sleeve
21: blade body
21A: front side blade body
21B: rear side blade body
21M: internal side diameter blade part
21Ma: maximum gauge part
21Mb: enlarged
21Mc: part is reduced
21N: outside diameter blade part
21Np: plate-like portion
23: aerofoil
24,24A, 24B, 24M, 24Np: suction surface
24L: length
24R, 25R: line
25,25M, 25Np: pressure surface
26: leading edge potion
27: trailing edge potion
29,29A, 29B: through hole
29C: notch
29C1,29C2: part
101: rotary shaft
102,103,104, H: arrow
110: mold for forming
112: movable side mold
114: fixed side mold
116: chamber
120,150: pressure fan
127,154: blowing portion
128,151: drive motor
129,152: clamshell
129a, 152a: guiding wall
130,153: sucting
131,132: space
140: air cleaner
141: strainer
142: suction inlet
143: blow-off outlet
144: shell
144a: rear wall
144b: roof
145: channel
AS: contain glass fibre
C: chord-length
D: interval
L1, L2, L3, L4, L5, L6: interplane distance
LN1, LN2: straight line
LN3: chord line
LN4, W1, W2: vertical line
P1, P3, P4, P5, P6: position
P2: position (maximum gauge position)
P10, P11, P12: point
P13, P15: position
WA, WB: speed
H1, h3, h4, h5, h6: the wing is thick
H2: maximum gauge
M: camber ratio
T, t1, t2: camber.
Claims (11)
1. a kind of telecentricity fan, which is characterized in that including multiple blade bodies, the multiple blade body has the leading edge of air inflow
The trailing edge potion in portion and air outflow, and be arranged each other across interval in circumferential direction；
Each in multiple blade bodies is formed with aerofoil, and the aerofoil prolongs between the leading edge potion and the trailing edge potion
It stretches, and by being located at the rotation side in the pressure surface and the blade body of the side positioned at direction of rotation in the blade body
To opposite side suction surface constitute；
Multiple blade bodies include front side blade body and rear side blade body, the rear side blade body across the interval and with institute
Front side blade body opposite direction is stated, and is located at the opposite side of direction of rotation relative to the front side blade body；
If by the most short distance from any part on the suction surface of the front side blade body to the pressure surface of the rear side blade body
From, the interplane distance being defined as in the position,
The front side blade body has the maximum gauge part for providing the maximum gauge among the front side blade body, and will be described
The position on suction surface in maximum gauge part is defined as maximum gauge position,
By the maximum gauge position among the suction surface of the front side blade body and the range between the leading edge potion, definition
For internal side diameter suction surface,
By the maximum gauge position among the suction surface of the front side blade body and the range between the trailing edge potion, definition
For outside diameter suction surface,
, from the leading edge potion to the length of the trailing edge potion, it is long that suction surface will be defined as in the suction surface of the front side blade body
Degree, then
The interplane distance on the interplane distance maximum gauge position in the internal side diameter suction surface,
Among the outside diameter suction surface, the maximum gauge position with to leave the suction surface from the maximum gauge position long
Interplane distance in range between the position of more than half length of degree is substantially certain.
2. a kind of telecentricity fan, which is characterized in that including multiple blade bodies, the multiple blade body has the leading edge of air inflow
The trailing edge potion in portion and air outflow, and be arranged each other across interval in circumferential direction；
Each in multiple blade bodies is formed with aerofoil, and the aerofoil prolongs between the leading edge potion and the trailing edge potion
It stretches, and by being located at the rotation side in the pressure surface and the blade body of the side positioned at direction of rotation in the blade body
To opposite side suction surface constitute；
Multiple blade bodies it is each, have the internal side diameter blade part comprising the leading edge potion and be located at the internal diameter lateral lobe
On the outside of the diameter direction in piece portion and include the trailing edge potion outside diameter blade part；
The internal side diameter blade part includes:
Maximum gauge part provides the maximum gauge among the internal side diameter blade part；
Enlarged, between the leading edge potion and the maximum gauge part, with the side direction from the leading edge potion
On the outside of diameter direction and wing thickness gently thickens；And
Reduce part, be located at the maximum gauge part more on the outside of diameter direction, with from the maximum gauge part it
Side towards on the outside of diameter direction and wing thickness is gently thinning；
The pressure surface of the suction surface of the internal side diameter blade part and the internal side diameter blade part, all has the phase towards direction of rotation
It tosses about and bends to the surface shape of convex；
The curvature of the suction surface of the internal side diameter blade part, greater than the curvature of the pressure surface of the internal side diameter blade part；
The outside diameter blade part includes the plate extended from the side of the trailing edge potion toward diameter direction inside with roughly the same wing thickness
Shape portion；
The curvature of the pressure surface of the curvature of the suction surface of the plate-like portion and the plate-like portion, the respectively less than described internal side diameter blade part
Suction surface curvature.
3. telecentricity fan as claimed in claim 2, which is characterized in that the pressure surface and the outer diameter of the internal side diameter blade part
The pressure surface of side blade part tangent each other,
The suction surface of the suction surface of the internal side diameter blade part and outside diameter blade part tangent each other.
4. telecentricity fan as claimed in claim 2 or claim 3, which is characterized in that the maximum gauge of the outside diameter blade part is less than
The maximum gauge of the internal side diameter blade part；
The camber of the outside diameter blade part, less than the camber of the internal side diameter blade part.
5. the telecentricity fan as described in any one of claim 2 to 4, which is characterized in that be equipped in the internal side diameter blade part
In the through hole that the direction parallel relative to rotary shaft extends；
The through hole is formed as comprising the maximum gauge part, or respectively in the diameter direction of the maximum gauge part
It is each on the outside of side and diameter direction to form one.
6. telecentricity fan as claimed in claim 5, which is characterized in that from institute in terms of the direction parallel relative to the rotary shaft
When stating the inner peripheral surface of the through hole formed in internal side diameter blade part, crescent moon shape is presented in the inner peripheral surface.
7. such as telecentricity fan described in any one of claims 1 to 6, which is characterized in that if the leading edge potion and institute will be linked
The straight line for stating trailing edge potion is defined as chord line,
The length of the chord line is set as C, the vertical line of the chord line will be hung down to from the suction surface of the blade body
Length is that the length of the vertical line on maximum position is set as t, the value of t/C is defined as camber ratio m, then
Multiple blade bodies it is each be formed as the camber ratio m be 0.25 or more.
8. the telecentricity fan as described in any one of claims 1 to 7, which is characterized in that multiple blade bodies are configured into
For constant speed wing column.
9. such as telecentricity fan described in any item of the claim 1 to 8, which is characterized in that be formed by resin.
10. a kind of mold for forming, which is characterized in that be used in and formed to telecentricity fan as claimed in claim 9.
11. a kind of fluid delivery system, which is characterized in that including pressure fan, the pressure fan in such as claim 1 to 9 by appointing
Telecentricity fan described in one and the drive motor composition for linking and making multiple blade body rotations with above-mentioned telecentricity fan.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-077580 | 2017-04-10 | ||
| JP2017077580 | 2017-04-10 | ||
| PCT/JP2017/031312 WO2018189931A1 (en) | 2017-04-10 | 2017-08-31 | Centrifugal fan, moulding die, and fluid feeding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110494654A true CN110494654A (en) | 2019-11-22 |
| CN110494654B CN110494654B (en) | 2021-09-14 |
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ID=63793210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780089424.1A Active CN110494654B (en) | 2017-04-10 | 2017-08-31 | Telecentric fan, molding die and fluid delivery device |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6951428B2 (en) |
| CN (1) | CN110494654B (en) |
| TW (1) | TWI661131B (en) |
| WO (1) | WO2018189931A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973427B (en) * | 2019-05-10 | 2021-11-26 | 泛仕达机电股份有限公司 | Multi-wing centrifugal fan blade, impeller and multi-wing centrifugal fan |
| JP6852768B1 (en) * | 2019-09-30 | 2021-03-31 | ダイキン工業株式会社 | Cross-flow fan wings, cross-flow fan and air-conditioning indoor unit |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5331206A (en) * | 1976-09-06 | 1978-03-24 | Hitachi Ltd | Fan with forward blades |
| US5586053A (en) * | 1992-08-14 | 1996-12-17 | Goldstar Co., Ltd. | Method to determine the blade shape of a sirocco fan |
| CN1367322A (en) * | 2001-01-22 | 2002-09-04 | 三电有限公司 | Multi-vane fan for air conditioning equipment of car |
| EP1741934A1 (en) * | 2005-07-04 | 2007-01-10 | Behr GmbH & Co. KG | Rotor |
| WO2007003416A1 (en) * | 2005-07-04 | 2007-01-11 | Behr Gmbh & Co. Kg | Blower wheel |
| CN102297156A (en) * | 2010-06-28 | 2011-12-28 | 夏普株式会社 | Fan, mold for molding, and fluid feeding device |
| CN105723094A (en) * | 2013-09-12 | 2016-06-29 | 诺沃皮尼奥内股份有限公司 | Liquid tolerant impeller for centrifugal compressors |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002285996A (en) * | 2001-01-22 | 2002-10-03 | Sanden Corp | Multi-blade blower fan |
| JP5469635B2 (en) * | 2011-05-30 | 2014-04-16 | シャープ株式会社 | Centrifugal fan, molding die and fluid feeder |
| CN203627302U (en) * | 2013-11-20 | 2014-06-04 | 浙江双阳风机有限公司 | Centrifugal fan impeller |
-
2017
- 2017-08-31 CN CN201780089424.1A patent/CN110494654B/en active Active
- 2017-08-31 JP JP2019512180A patent/JP6951428B2/en active Active
- 2017-08-31 WO PCT/JP2017/031312 patent/WO2018189931A1/en active Application Filing
- 2017-09-04 TW TW106130190A patent/TWI661131B/en not_active IP Right Cessation
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5331206A (en) * | 1976-09-06 | 1978-03-24 | Hitachi Ltd | Fan with forward blades |
| US5586053A (en) * | 1992-08-14 | 1996-12-17 | Goldstar Co., Ltd. | Method to determine the blade shape of a sirocco fan |
| CN1367322A (en) * | 2001-01-22 | 2002-09-04 | 三电有限公司 | Multi-vane fan for air conditioning equipment of car |
| EP1741934A1 (en) * | 2005-07-04 | 2007-01-10 | Behr GmbH & Co. KG | Rotor |
| WO2007003416A1 (en) * | 2005-07-04 | 2007-01-11 | Behr Gmbh & Co. Kg | Blower wheel |
| CN102297156A (en) * | 2010-06-28 | 2011-12-28 | 夏普株式会社 | Fan, mold for molding, and fluid feeding device |
| CN105723094A (en) * | 2013-09-12 | 2016-06-29 | 诺沃皮尼奥内股份有限公司 | Liquid tolerant impeller for centrifugal compressors |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI661131B (en) | 2019-06-01 |
| WO2018189931A1 (en) | 2018-10-18 |
| JPWO2018189931A1 (en) | 2020-02-20 |
| JP6951428B2 (en) | 2021-10-20 |
| CN110494654B (en) | 2021-09-14 |
| TW201837322A (en) | 2018-10-16 |
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