CN206071946U - Centrifugation blade, air-conditioning device and blower fan system - Google Patents
Centrifugation blade, air-conditioning device and blower fan system Download PDFInfo
- Publication number
- CN206071946U CN206071946U CN201621060538.2U CN201621060538U CN206071946U CN 206071946 U CN206071946 U CN 206071946U CN 201621060538 U CN201621060538 U CN 201621060538U CN 206071946 U CN206071946 U CN 206071946U
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- China
- Prior art keywords
- blade
- disk
- air
- front shroud
- centrifugation blade
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Abstract
This utility model provides a kind of centrifugation blade, air-conditioning device and blower fan system.The centrifugation blade includes front shroud disk, back cover disk and multiple blades, wherein, the side of blade is connected with front shroud disk, opposite side and the connection of back cover disk, it is characterised in that the diameter of the circular envelope constituted by the outer edge of multiple blades is less than the external diameter of front shroud disk.This utility model increases the outer circumference diameter of front shroud disk, it is larger than the outer circumference diameter of blade, thus increase guiding distance of the blade to air-flow, so as to strengthen the guiding function to blade air, avoid causing air well enter air channel due to Diffusion of gas stream, so as to reduce energy loss, the characteristics of with simple structure, low cost.
Description
Technical field
This utility model is related to field of air conditioning, more particularly to a kind of centrifugation blade, air-conditioning device and blower fan system.
Background technology
Centrifugation blade is commonly used in indoor apparatus of air conditioner blower fan system.Figures 1 and 2 show that in air-conditioning room of the prior art
The structural representation of the centrifugation blade adopted in machine, the centrifugation blade include front shroud disk 1, back cover disk 2 and blade 3.Wherein, as schemed
Shown in 2, outer circumference diameter d1 of front shroud disk 1 is equal to outer circumference diameter d2 of blade 3.When wind is blown out from the outward flange of blade 3, due to
The guide functions and space for losing blade 3 become big suddenly, easily cause air-flow to diffusional flow around, and this phenomenon is in blade 3
It is most obvious near 1 Pan Chu of front shroud performances.
Therefore, the Diffusion of gas stream flowing of centrifugation blade of the prior art is unfavorable for smoothly blowing out from air channel, and energy is damaged
Lose larger；Meanwhile, the air-flow of a part just blowout is sucked back into again, and backflow phenomenon is more serious.
Utility model content
This utility model provides a kind of centrifugation blade, air-conditioning device and blower fan system, to solve the expansion of prior art air-flow
Dissipating causes air well enter air channel, the big problem of energy loss.
To solve the above problems, as one side of the present utility model, there is provided a kind of centrifugation blade, including front shroud
Disk, back cover disk and multiple blades, wherein, the side of blade is connected with front shroud disk, opposite side and the connection of back cover disk, and its feature exists
External diameter of the diameter of the circular envelope constituted in the outer edge of, multiple blades less than front shroud disk.
Preferably, the difference between the diameter of the external diameter of front shroud disk and circular envelope is 16～20mm.
Preferably, section of the front shroud disk on the meridian plane of centrifugation blade is curved, and the inlet side molded line of arc with go out
Angle between the molded line of wind side is more than 90 °.
Preferably, angle more than 90 °, and be less than 110 °.
Preferably, the windward side of blade is highly H2 highly for H1, air side, then 2/3H1<H2<3/4H1.
Preferably, the diameter of circular envelope is equal to the external diameter of back cover disk.
Preferably, the middle part of back cover disk is prominent to front shroud disk direction and forms motor mounting space.
Preferably, the center of back cover disk is provided with for installing the through-hole structure of fan blade inserts.
This utility model additionally provides a kind of air-conditioning device, including above-mentioned centrifugation blade.
This utility model additionally provides a kind of blower fan system, including above-mentioned centrifugation blade.
This utility model increases the outer circumference diameter of front shroud disk so as to more than the outer circumference diameter of blade, thus increase leaf
Guiding distance of the piece to air-flow, so as to strengthen the guiding function to blade air, it is to avoid due to Diffusion of gas stream causes air can not
Air channel is entered well, so as to reduce energy loss, the characteristics of with simple structure, low cost.
Description of the drawings
Fig. 1 schematically shows the axonometric chart of centrifugation blade of the prior art；
Fig. 2 schematically shows the top view of centrifugation blade of the prior art；
Fig. 3 schematically shows the meridian plane air current flow schematic diagram of centrifugation blade of the prior art；
Fig. 4 schematically shows the close-up schematic view at the top of the meridian plane in Fig. 3；
Fig. 5 schematically shows the axonometric chart of the centrifugation blade in this utility model；
Fig. 6 schematically shows the top view of the centrifugation blade in this utility model；
Fig. 7 schematically shows the sectional view of the centrifugation blade in this utility model；
Fig. 8 schematically shows the meridian plane air current flow schematic diagram of the centrifugation blade in this utility model；
Fig. 9 schematically shows the close-up schematic view at the top of the meridian plane in Fig. 8.
Reference in figure：1st, front shroud disk；2nd, back cover disk；3rd, blade；4th, motor mounting space；5th, through-hole structure.
Specific embodiment
Embodiment of the present utility model is described in detail below in conjunction with accompanying drawing, but this utility model can be by right
It is required that the multitude of different ways for limiting and covering is implemented.
As shown in Fig. 5 to 9, the centrifugation blade in this utility model includes：Front shroud disk 1, back cover disk 2 and multiple blades 3.Its
In, it is described it is many be located between front shroud disk 1 and back cover disk 2 from this blade 3, the side of blade 3 is connected with front shroud disk 1, opposite side and
Back cover disk 2 connects, and this multiple blade 3 is spirally arranged on an annulus.The outward flange of the plurality of blade 3 is located at
On same circle, i.e., the circle defines 3 outer peripheral circular envelopes of the plurality of blade, and especially, this practicality is new
Diameter d2 (i.e. above-mentioned circle of the outside diameter d 1 of front shroud disk 1 more than the circular envelope being made up of the outer edge of multiple blades 3 in type
The external diameter of ring).
Due to d1 ＞ d2, therefore after air-flow is blown out from the outward flange of blade, can continue to along front shroud disk 1 flow one section
Distance, causes current rate not enough so as to air-flow can be avoided to be spread after flowing out from the outer edge of blade immediately, and then cannot edge
The problem that expected trajectory is sent.
In above-mentioned technical proposal, this utility model increases the outer circumference diameter of front shroud disk so as to more than the periphery of blade
Diameter, thus guiding distance of the blade to air-flow is increased, so as to strengthen the guiding function to blade air, it is to avoid due to air-flow
Diffusion causes air well enter air channel, so as to reduce energy loss, the characteristics of with simple structure, low cost.It is more excellent
Selection of land, in order to obtain more preferable effect, the difference between the diameter of the external diameter of front shroud disk 1 and circular envelope is selected by this utility model
It is selected as 16～20mm.
In order to ensure that air-flow can refer to Fig. 7 along molded line to the smooth water conservancy diversion in partial below, this utility model makes front shroud disk 1 exist
Section on the meridian plane of centrifugation blade is curved on the whole, and the folder between the inlet side molded line and air side molded line of arc
Angle α is more than 90 °.It is highly preferred that angle α more than 90 °, and be less than 110 °.As a result of the section of arc, therefore, may be guided
Air-flow flows to fan blade partial below, so as to increase the distance with air inlet, weakens air-flow volume and sucks back flow phenomenon.
According to fluid dynamic simulational computation, the Effective power that the blade near front shroud disk air side does is less, pneumatic efficiency
It is relatively low, therefore blade height herein can be reduced, the pneumatic efficiency of blade can be so lifted, increased inlet and outlet distance, weakened
Air-flow volume sucks back stream, can also reduce material, cost-effective.For example, in the preferred embodiment shown in Fig. 7, if blade is windward
Side is highly H2 highly for H1, air side, then preferably 2/3H1<H2<3/4H1.
In a preferred embodiment, the diameter of circular envelope can be equal to the external diameter of back cover disk 2.Additionally, can also make
The middle part of back cover disk 2 is prominent to 1 direction of front shroud disk and forms motor mounting space 4, to leave enough spaces for laying electricity
Machine.
Preferably, the center of back cover disk 2 is provided with for installing the through-hole structure 5 of fan blade inserts, i.e. hub centre, so may be used
Fan blade insert structure is easily installed, to reduce fan blade vibration, improve noise.
Below, comparative illustration is carried out to effect of the present utility model by simulation result.Fig. 3 and Fig. 8 is respectively existing skill
The water conservancy diversion effect of the centrifugation blade in centrifugation blade and this utility model in art.There it can be seen that in this utility model
Centrifugation blade is significantly greater than conventional centrifugal fan blade of the prior art in the current rate near front shroud Pan1Chu, so as to, it is to avoid
Dissipated after the air-flow outflow blade of front shroud disk immediately, it can be ensured that air-flow continues flow forward extremely along movement locus before
A certain distance, so as to smoothly enter air channel, reduces energy loss.As d1 ＞ d2, the distance increase of fan blade front shroud disk water conservancy diversion goes out
Air port and air inlet lengthening distance, so as to the volume for weakening air-flow sucks back flow phenomenon.
This utility model additionally provides a kind of air-conditioning device, including above-mentioned centrifugation blade.Additionally, this utility model is also carried
A kind of blower fan system, including above-mentioned centrifugation blade are supplied.
Preferred embodiment of the present utility model is the foregoing is only, this utility model is not limited to, for this
For the technical staff in field, this utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle
Within, any modification, equivalent substitution and improvements made etc. are should be included within protection domain of the present utility model.
Claims (10)
1. a kind of centrifugation blade, including front shroud disk (1), back cover disk (2) and multiple blades (3), wherein, the one of the blade (3)
Side is connected with the front shroud disk (1), opposite side is connected with the back cover disk (2), it is characterised in that the plurality of blade (3)
External diameter of the diameter of the circular envelope constituted by outer edge less than the front shroud disk (1).
2. centrifugation blade according to claim 1, it is characterised in that the external diameter of the front shroud disk (1) and the circular bag
Difference between the diameter of winding thread is 16～20mm.
3. centrifugation blade according to claim 1, it is characterised in that son of the front shroud disk (1) in the centrifugation blade
Section on noon face is curved, and the angle between the inlet side molded line and air side molded line of the arc is more than 90 °.
4. centrifugation blade according to claim 3, it is characterised in that the angle more than 90 °, and be less than 110 °.
5. centrifugation blade according to claim 1, it is characterised in that the windward side of the blade is highly H1, air side
Highly it is H2, then 2/3H1<H2<3/4H1.
6. centrifugation blade according to claim 1, it is characterised in that the diameter of the circular envelope is equal to the back cover
The external diameter of disk (2).
7. centrifugation blade according to claim 1, it is characterised in that the middle part of the back cover disk (2) is to the front shroud disk
(1) direction projects and forms motor mounting space (4).
8. centrifugation blade according to claim 1, it is characterised in that the center of the back cover disk (2) is provided with for installing
The through-hole structure of fan blade inserts.
9. a kind of air-conditioning device, it is characterised in that including the centrifugation blade any one of claim 1 to 8.
10. a kind of blower fan system, it is characterised in that including the centrifugation blade any one of claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621060538.2U CN206071946U (en) | 2016-09-18 | 2016-09-18 | Centrifugation blade, air-conditioning device and blower fan system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621060538.2U CN206071946U (en) | 2016-09-18 | 2016-09-18 | Centrifugation blade, air-conditioning device and blower fan system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206071946U true CN206071946U (en) | 2017-04-05 |
Family
ID=58437945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621060538.2U Active CN206071946U (en) | 2016-09-18 | 2016-09-18 | Centrifugation blade, air-conditioning device and blower fan system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206071946U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351876A (en) * | 2016-09-18 | 2017-01-25 | 珠海格力电器股份有限公司 | Centrifugal fan blade unit, air conditioner and fan system |
-
2016
- 2016-09-18 CN CN201621060538.2U patent/CN206071946U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351876A (en) * | 2016-09-18 | 2017-01-25 | 珠海格力电器股份有限公司 | Centrifugal fan blade unit, air conditioner and fan system |
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