CN100451344C - Centrifugal fan and its fan blade - Google Patents
Centrifugal fan and its fan blade Download PDFInfo
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- CN100451344C CN100451344C CNB2005101260346A CN200510126034A CN100451344C CN 100451344 C CN100451344 C CN 100451344C CN B2005101260346 A CNB2005101260346 A CN B2005101260346A CN 200510126034 A CN200510126034 A CN 200510126034A CN 100451344 C CN100451344 C CN 100451344C
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- combination section
- blade
- centrifugal fan
- vane group
- impeller
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Abstract
The invention relates to a centrifugal fan, comprising a hub and an impeller. The hub is used to cover a driving device and the impeller is round the hub. The impeller comprises a first vane and a second vane. The first vane is round the hub. The first van comprises two-discrete first combination and multiple vanes and the two-discrete first combination is connected with the first vane. The second vane comprises two-discrete second combination and multiple vanes and two-discrete second combination is connected with the second vane. Two first combination is corresponding with two second combination. The first vane unit and the second vane unit are formed by the corresponding combination of the first and second combinations.
Description
Technical field
The present invention system is about a kind of centrifugal fan (centrifugal fan) and impeller (impeller) thereof, particularly about a kind of centrifugal fan and impeller thereof that is combined by two centrifugal vane group.
Background technique
Known centrifugal fan is to form by single mold is integrally formed, therefore when the number of blade of impeller increases, understand because of the necessary thickness of mould itself, and cause each vane thickness significantly to reduce, and then make blade be easy to the situation that deforms, damages in the process of centrifugal fan running.Yet if in order to keep enough vane thicknesses, the thickness of mould itself can significantly reduce, and causes the situation that strength deficiency or fracture take place when being shaped.
Because said circumstances, the flabellum number of known centrifugal fan impeller can't further increase, and the centrifugal fan that causes each size has the restriction of blast, air quantity under same rotating speed.For this reason, in order further to improve blast, the air quantity of each size centrifugal fan, only can reach by the mode that improves rotating speed.Yet, when rotating speed promotes, the noise of fan running also with increase.And, since the impeller of known centrifugal fan system by the blade institute of same shape around forming, therefore in the process of fan running, easily produce resonance noise.
Summary of the invention
Therefore, for addressing the above problem, the present invention proposes a kind of centrifugal fan and impeller thereof, significantly to increase the total leaf number of single impeller.
The present invention proposes a kind of centrifugal fan and impeller thereof in addition, the noise content when operating significantly to reduce.
The present invention reintroduces a kind of centrifugal fan and impeller thereof, blast, air quantity when operating significantly to improve.
For this reason, the present invention system provides a kind of centrifugal fan, comprises a hub portion and an impeller.This system of hub portion is in order to coat a drive unit, and this impeller then is located in this hub portion.This impeller system is made up of one first vane group and one second vane group, first vane group is located in this hub portion, this first vane group has one first combination section, one second combination section and a plurality of first blade, and this first combination section and this second combination section are connected with described first blade respectively.Second vane group has one the 3rd combination section, one the 4th combination section and a plurality of second blade, and the 3rd combination section and the 4th combination section are connected with described second blade respectively, this first combination section is corresponding with the 3rd combination section, and this second combination section is corresponding with the 4th combination section.This first vane group and this second vane group system make up and the mode of this second combination section and the corresponding combination in the 4th combination section makes up mutually via this first combination section and the 3rd combination section are corresponding.
The present invention provides a kind of impeller again, system is made up of one first vane group and one second vane group, first vane group is located in this hub portion, this first vane group has one first combination section, one second combination section and a plurality of first blade, and this first combination section and this second combination section are connected with described first blade respectively.Second vane group has one the 3rd combination section, one the 4th combination section and a plurality of second blade, and the 3rd combination section and the 4th combination section are connected with described second blade respectively, this first combination section is corresponding with the 3rd combination section, and this second combination section is corresponding with the 4th combination section.This first vane group and this second vane group system make up and the mode of this second combination section and the corresponding combination in the 4th combination section makes up mutually via this first combination section and the 3rd combination section are corresponding.
Aforementioned first blade of above-mentioned centrifugal fan or impeller has dissimilar shape, identical shaped, different inclination or size different with the aforementioned second blade cording.Again, aforementioned first blade is to be not parallel to each other mutually with aforementioned second blade.In addition, aforementioned first blade and aforementioned second blade are alternately to arrange or block the arrangement.Aforementioned first blade and aforementioned second blade are centrifugal blade.
Aforementioned the 3rd combination section of above-mentioned centrifugal fan or impeller is a top cover.Furtherly, aforementioned first combination section and aforementioned the 3rd combination section have corresponding first built-in structure and second built-in structure respectively, wherein this first built-in structure and this second built-in structure are outstanding structure and sunk structure or buckle structure, or embedded structure.In addition, aforementioned second combination section and aforementioned the 4th combination section have corresponding the 3rd built-in structure and the 4th built-in structure respectively, wherein the 3rd built-in structure and the 4th built-in structure are outstanding structure and sunk structure or buckle structure, or embedded structure.
In above-mentioned centrifugal fan or the impeller, aforementioned first vane group and aforementioned hub portion are one-body molded, and aforementioned first vane group and aforementioned second vane group are separable structure.The total leaf number system of impeller is greater than 20.
In centrifugal fan of the present invention or impeller, because impeller is the single impeller of being made up of at least two vane group, therefore in the process that impeller is shaped, do not have the problem of vane thickness deficiency or mold thickness deficiency, and can significantly increase the total leaf number of single impeller, and then blast, air quantity when significantly improving running.
In centrifugal fan of the present invention or impeller, owing in single impeller, have 2 kinds of blades more than the shape simultaneously, therefore in the process of centrifugal fan or impeller operation, can not produce resonance noise, and can significantly reduce the noise content when operating again.
For above and other objects of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and conjunction with figs. are described in detail below:
Description of drawings
Fig. 1 system illustrates the decomposing schematic representation of the centrifugal fan of a preferred embodiment of the present invention.
Fig. 2 system illustrates the schematic representation of the centrifugal fan of another preferred embodiment of the present invention.
[primary component symbol description]
100,100a: centrifugal fan
102,106,114,118: the combination section
104,116,200,204: flabellum
108,110,120,122: built-in structure
112,124,202,206: vane group
126: hub portion
128,208: impeller
Embodiment
Fig. 1 system illustrates the decomposing schematic representation of the centrifugal fan 100 of a preferred embodiment of the present invention.Please refer to Fig. 1, centrifugal fan 100 has hub portion 126 and impeller 128 at least.This hub portion 126 is in order to coating a drive unit, and this hub portion 126 is subjected to this drive unit to drive.Hub portion 126 can be a cylindrical structural body.
This impeller 128 is located in the hub portion 126, and impeller 128 is made up of one first vane group 124 and at least one second vane group 112, this first vane group 124 is to be located in this hub portion 126, and this first vane group 124 has combination section 114,118 and a plurality of blade 116, and wherein this combination section 114,118 is connected with each blade 116 respectively.This combination section 114,118 can be to be connected with the bottom with the top of blade 116 respectively.Combination section 114,118 can be rib shape, loop configuration.And combination section 114,118 has at least one built-in structure 122,120 respectively, and this built-in structure 122,120 can be outstanding structure, sunk structure, buckle structure or embedded structure.First vane group 124 is one-body molded with hub portion 126.Blade 116 can be centrifugal blade.
This second vane group 112 has combination section 102,106 and a plurality of blade 104, and wherein this combination section 102,106 is connected with each blade 104 respectively.And this combination section 102,106 is corresponding with the combination section 114,118 of this first vane group 124 respectively.This combination section 102,106 can be to be connected with the bottom with the top of blade 104 respectively.Combination section 102,106 can be rib shape, loop configuration.Particularly, combination section 102 is a top cover.In addition, combination section 102,106 has at least one built-in structure 110,108 respectively, and this built-in structure 110,108 can be outstanding structure, sunk structure, buckle structure or embedded structure.And the built-in structure 110,108 of second vane group 112 is that the built-in structure 122,120 with first vane group 124 is corresponding respectively.In addition, second vane group 112 and first vane group 124 are separable structure.Blade 104 can be centrifugal blade.
Moreover this second vane group 112 and this first vane group 124 are to make up mutually via this combination section 102 and these combination section 114 corresponding combinations and this combination section 106 mode with these combination section 118 corresponding combinations.So, second vane group 112 and contraposition and the assembling easily of first vane group 124, and obtain enough assembling intensity.
This second vane group 112 and this first vane group 124 be mutually after the assembling, and blade 104 and blade 116 can be for the blades of identical shaped blade, dissimilar shape, have the blade of different inclinations or the blade of different size.In addition, between blade 104 and the blade 116, also can be for not parallel.Under blade 104 and blade 116 uneven situations, be preferably at least one blade 104 and do not contact with blade 116.In addition, 116 in blade 104 and blade are alternately to arrange or block the arrangement.Blade 104 can be together to encircle the mode that is set as single ring, to be located in hub portion 126 peripheries with blade 116.
In addition, blade 104 is preferably more than 20 with the total leaf number of blade 116, and better is more than 25, and Te Jia is more than 30.
Fig. 2 system illustrates the schematic representation of the centrifugal fan 100a of another preferred embodiment of the present invention.Please refer to Fig. 2, the difference of centrifugal fan 100a and centrifugal fan 100 is that impeller 208 is made up of first vane group 202 that has multi-form blade 200,204 respectively and second vane group 206.Because the blade shape difference of single impeller 208, therefore compared to the identical single impeller 128 of blade shape, impeller 208 can not produce resonance noise, so the running noise of centrifugal fan 100a can be far below the running noise of centrifugal fan 100.
Moreover, in aforementioned preferred embodiment, be that example describes though be combined into a single impeller with 2 vane group, so not as limit, also can be combined into single impeller by a plurality of first vane group are corresponding with second vane group.
In centrifugal fan of the present invention or impeller, because impeller is the single impeller of being made up of at least two vane group, therefore in the process that impeller is shaped, do not have the problem of vane thickness deficiency or mold thickness deficiency, and can significantly increase the total leaf number of single impeller, and then blast, air quantity when significantly improving running.
In centrifugal fan of the present invention or impeller, owing in single impeller, have 2 kinds of blades more than the shape simultaneously, therefore in the process of centrifugal fan or impeller operation, can not produce resonance noise, and can significantly reduce the noise content when turning round again.
Though the present invention with a preferred embodiment openly as above; right its is not in order to limit the present invention; the those skilled in the art; without departing from the spirit and scope of the present invention; should be used for a variety of modifications and variations, so protection scope of the present invention should be looked appended the scope that claim defined and is as the criterion.
Claims (15)
1. centrifugal fan comprises:
One hub portion is in order to coat a drive unit; And
One impeller is located in this hub portion, and this impeller comprises:
One first vane group is located in this hub portion, has one first combination section, one second combination section and a plurality of first blade, and this first combination section and this second combination section are connected with described first blade respectively; And
One second vane group, have one the 3rd combination section, one the 4th combination section and a plurality of second blade, and the 3rd combination section and the 4th combination section are connected with described second blade respectively, and this first combination section is corresponding with the 3rd combination section, and this second combination section is corresponding with the 4th combination section;
It is characterized in that this first vane group and this second vane group system make up and the mode of this second combination section and the corresponding combination in the 4th combination section makes up mutually via this first combination section and the 3rd combination section are corresponding.
2. centrifugal fan as claimed in claim 1 is characterized in that, described first blade has dissimilar shape, different inclination or different size respectively with described second blade.
3. centrifugal fan as claimed in claim 1 is characterized in that, described first blade is identical with the shape of described second blade.
4. centrifugal fan as claimed in claim 1 is characterized in that, described first blade and described second blade are alternately to arrange.
5. centrifugal fan as claimed in claim 1 is characterized in that, this first combination section and the 3rd combination section have corresponding first built-in structure and second built-in structure respectively.
6. centrifugal fan as claimed in claim 5 is characterized in that, this first built-in structure and this second built-in structure are outstanding structure and sunk structure or buckle structure.
7. centrifugal fan as claimed in claim 1 is characterized in that, this second combination section and the 4th combination section have corresponding the 3rd built-in structure and the 4th built-in structure respectively.
8. centrifugal fan as claimed in claim 7 is characterized in that, the 3rd built-in structure and the 4th built-in structure are outstanding structure and sunk structure or buckle structure.
9. centrifugal fan as claimed in claim 7 is characterized in that, the 3rd built-in structure and the 4th built-in structure are embedded structure.
10. centrifugal fan as claimed in claim 1 is characterized in that, this first vane group and this hub portion are one-body molded.
11. centrifugal fan as claimed in claim 1 is characterized in that, this first vane group and this second vane group are separable structure.
12. centrifugal fan as claimed in claim 1 is characterized in that, described first blade is to be not parallel to each other mutually with described second blade.
13. centrifugal fan as claimed in claim 1 is characterized in that, the total leaf number system of this impeller is greater than 20.
14. centrifugal fan as claimed in claim 1 is characterized in that, this first blade and this second blade are centrifugal blade.
15. an impeller comprises:
One first vane group has one first combination section, one second combination section and a plurality of first blade, and this first combination section and this second combination section are connected with described first blade respectively; And
One second vane group, have one the 3rd combination section, one the 4th combination section and a plurality of second blade, and the 3rd combination section and the 4th combination section are connected with described second blade respectively, and this first combination section is corresponding with the 3rd combination section, and this second combination section is corresponding with the 4th combination section;
It is characterized in that this first vane group and this second vane group system make up and the mode of this second combination section and the corresponding combination in the 4th combination section makes up mutually via this first combination section and the 3rd combination section are corresponding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101260346A CN100451344C (en) | 2005-11-24 | 2005-11-24 | Centrifugal fan and its fan blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101260346A CN100451344C (en) | 2005-11-24 | 2005-11-24 | Centrifugal fan and its fan blade |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1971056A CN1971056A (en) | 2007-05-30 |
| CN100451344C true CN100451344C (en) | 2009-01-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101260346A Active CN100451344C (en) | 2005-11-24 | 2005-11-24 | Centrifugal fan and its fan blade |
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| Country | Link |
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| CN (1) | CN100451344C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500443A (en) * | 2009-01-08 | 2015-04-08 | 台达电子工业股份有限公司 | Ventilation device and impeller thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3958905A (en) * | 1975-01-27 | 1976-05-25 | Deere & Company | Centrifugal compressor with indexed inducer section and pads for damping vibrations therein |
| JPH07103192A (en) * | 1993-10-08 | 1995-04-18 | Matsushita Seiko Co Ltd | Multiblade fan connector of air blower |
| US5611668A (en) * | 1995-06-16 | 1997-03-18 | Bosch Automotive Motor Systems, Inc. | Multi-part injection-molded plastic fan |
| US6572336B2 (en) * | 2001-09-28 | 2003-06-03 | Sunonwealth Electric Machine Industry Co., Ltd. | Impeller structure |
| CN2627251Y (en) * | 2003-05-26 | 2004-07-21 | 杨圣安 | Combined type fan leaves for thermal fan |
| US20040219022A1 (en) * | 2003-04-29 | 2004-11-04 | Sheng-An Yang | Assembled type impeller of a cooling fan |
| US20050095125A1 (en) * | 2003-10-31 | 2005-05-05 | Shun-Chen Chang | Centrifugal fan with stator blades |
-
2005
- 2005-11-24 CN CNB2005101260346A patent/CN100451344C/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3958905A (en) * | 1975-01-27 | 1976-05-25 | Deere & Company | Centrifugal compressor with indexed inducer section and pads for damping vibrations therein |
| JPH07103192A (en) * | 1993-10-08 | 1995-04-18 | Matsushita Seiko Co Ltd | Multiblade fan connector of air blower |
| US5611668A (en) * | 1995-06-16 | 1997-03-18 | Bosch Automotive Motor Systems, Inc. | Multi-part injection-molded plastic fan |
| US6572336B2 (en) * | 2001-09-28 | 2003-06-03 | Sunonwealth Electric Machine Industry Co., Ltd. | Impeller structure |
| US20040219022A1 (en) * | 2003-04-29 | 2004-11-04 | Sheng-An Yang | Assembled type impeller of a cooling fan |
| CN2627251Y (en) * | 2003-05-26 | 2004-07-21 | 杨圣安 | Combined type fan leaves for thermal fan |
| US20050095125A1 (en) * | 2003-10-31 | 2005-05-05 | Shun-Chen Chang | Centrifugal fan with stator blades |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1971056A (en) | 2007-05-30 |
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