CN2528985Y - Enclosed impeller for high-speed centrifugal fan - Google Patents
Enclosed impeller for high-speed centrifugal fan Download PDFInfo
- Publication number
- CN2528985Y CN2528985Y CN 01277603 CN01277603U CN2528985Y CN 2528985 Y CN2528985 Y CN 2528985Y CN 01277603 CN01277603 CN 01277603 CN 01277603 U CN01277603 U CN 01277603U CN 2528985 Y CN2528985 Y CN 2528985Y
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- CN
- China
- Prior art keywords
- impeller
- epimeron
- blade
- power
- central authorities
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model provides an enclosed impeller for a high-speed centrifugal ventilator, which consists of a front lateral sheet, a rear lateral sheet and a vane which is arranged between the front lateral vane and the rear lateral vane. With renovation of the vane, a slope is formed on an air inlet and an air outlet of the impeller, and a vent hole gradually becomes small from the air inlet to the air outlet. The utility model not only increases the air intake of the air inlet, but also enhances the air speed of the air outlet, and greatly enhances the efficiency of the impeller.
Description
Technical field
The utility model relates to a kind of impeller, especially relates to the enclosed impeller that a kind of high-speed centrifugal fan is used.
Background technique
The impeller that existing high-speed centrifugal fan commonly used is used generally is the round shape coxopleure that is had through hole by central authorities, and central authorities are provided with the round shape epimeron of link, and the blade that five equilibrium is arranged between the pre-epimeron combines.The impeller air-out of this blower fan depends on centrifugal force to produce, the size of air output is relevant with the rotating speed of impeller, as the patent No. is that 95240280.7 the plastic impeller and the patent No. are 96229937.5 backpack mist duster impellers, bring up to when rotating speed and can produce the problem that efficient reduces when per minute 3000 changes above, thereby caused the loss of power.
The blade that common draught fan impeller adopts on the market has following two kinds of structures,
1. linear leaf
The characteristics of linear leaf structure be blade vertically between pre-epimeron, branch settings such as blade, intake grill and exhaust outlet
Highly identical.The rotational resistance of the blade of this structure is bigger, causes power loss bigger.Intake grill and exhaust outlet
Height equate to make that the pressure of exhaust outlet is less, wind speed is lower, can't further improve air output, produces bottleneck
Effect.And since the intake grill of linear leaf impeller less than exhaust outlet, the air-out passage changes from small to big, sense of rotation
Be single " back to ", can not make corresponding adjustment according to the actual needs.
2. short blade
The structural feature and the linear leaf of short blade are roughly the same, but blade is shorter.This makes that also its rotational resistance is less,
Improved efficient.But in using engineering, the bigger phenomenon of noise but occurred, therefore extensively do not pushed away
The wide application.And the sense of rotation of short blade also can only be single direction " forward direction ", also can't be according to the need of reality
To adjust sense of rotation accordingly.
By above introduction as can be known, there are a lot of deficiencies in existing blower fan owing to structural reason in application, be not well positioned to meet the demand in market.
Summary of the invention
The novel purpose of this use provides a kind of enclosed impeller that high-speed centrifugal fan is used that is used for.
This use is novel can be realized by following scheme:
Described centrifugal blower comprises that with enclosed impeller central authorities have the round shape coxopleure of through hole, and central authorities are provided with the round shape epimeron of link and the crooked blade between described forward and backward lateral plate in the same direction.It is characterized in that described blade height reduces gradually from the outside nose circle of interior nose circle of described impeller, form the gradient at described coxopleure.
The above-mentioned gradient refers to that described blade outer rim and episternal angle are between 95 degree-125 degree.
Described blade can be curved or curved to counterclockwise to clockwise direction according to actual needs.
Described blade is vertically set between the forward and backward lateral plate.
The number of described blade can be increased or be reduced by the actual demand decision.
Described blade can be arranged to the form that deviated splitter vane alternates.
Described impeller can be made by described pre-epimeron gummed or the impulse welding of described pre-epimeron highfrequency welding or the use mould once-through of loosing core when making.
To adopt according to the needs of power being connected of described impeller and power and the incorporate flange plate of described impeller epimeron is fastenedly connected with prohibiting firmware, or adopt central authorities at described impeller epimeron to be provided with and be with the metal connecting piece of keyway to be connected with power.
Described impeller can use plastic production.
Owing to adopted above scheme, all formed the gradient at the intake grill and the exhaust outlet of impeller, the ventilation road junction from large to small, not only the air output of intake grill increases, and the wind pressure that goes out of exhaust outlet has strengthened wind speed thereupon increasing.By the flexible setting to blade, this impeller can make things convenient for user's selection according to different requirement " forward direction " or " back to " rotation.With integrated connection of power can save fabricating cost, if the dismounting of impeller for convenience can adopt the metal connecting piece of band keyway to be connected with power.The use mould once-through of loosing core is finished to make and has been saved fabricating cost.This use is novel both can be applied on civilian installation such as the backpack mist duster, also can be applied on the industrial facility, need be concrete condition and deciding.
Description of drawings
Fig. 1 side view of the present invention
Fig. 2 coxopleure reference drawing of the present invention
Fig. 3 epimeron reference drawing of the present invention
Embodiment
Further specify the utility model below in conjunction with embodiment.
Embodiment 1
With reference to Fig. 1, described impeller comprises coxopleure 1, epimeron 2, the blade 3 between the pre-epimeron.Coxopleure 1 is the circular conical surface of perforate in the middle of; The back central authorities of epimeron 2 are provided with and the incorporate flange plate 21 of impeller, and the flange plate periphery is provided with the stiffening rib 22 of strengthening rigidity; Be the blade 3 that vertically is located between the two between the pre-epimeron, blade 3 five equilibriums are arranged between the pre-epimeron, and blade outer rim and episternal angle are between 90 degree-130 degree; Whole impeller adopts the mould once-through of loosing core to make, and uses plastics as raw material.
During use, wind is inhaled into from intake grill, and the centrifugal force that is produced by rotation is sent to exhaust outlet, because intake grill greater than exhaust outlet, makes the pressure of the wind that blower fan is sent and wind speed all obtain reinforcement.
Embodiment 2
It is different with embodiment 1 with the Placement of blade to remove pre-epimeron in the present embodiment, and all the other are identical with embodiment 1.
The Placement of pre-epimeron and blade adopts highfrequency welding impulse welding in the present embodiment.
Embodiment 3
It is different with embodiment 1 with the Placement of power to remove impeller in the present embodiment, and all the other are identical with embodiment 1.
The Placement of impeller and power adopts the metal connecting piece that dismountable band keyway is installed at the back of epimeron in the present embodiment, links to each other with power by this link.
Embodiment 4
The set-up mode that removes blade in the present embodiment is different with embodiment 1, and all the other are identical with embodiment 1.
Blade in the present embodiment between the pre-epimeron can be made as the alternate five equilibrium of deviated splitter vane, and the direction of blade can be selected to " clockwise direction " curved or curved to " counterclockwise " according to actual needs.
Claims (10)
1. a centrifugal blower enclosed impeller comprises that central authorities have the round shape coxopleure of through hole, and central authorities are provided with the round shape epimeron of link and the crooked blade between described forward and backward lateral plate in the same direction.It is characterized in that described blade height reduces gradually from the outside nose circle of interior nose circle of described impeller, form the gradient at described coxopleure.
2. impeller as claimed in claim 1 is characterized in that, the described gradient refers to that blade outer rim and episternal angle are between 95 degree-125 degree.
3. impeller as claimed in claim 1 or 2 is characterized in that, described blade can be curved or curved to counterclockwise to clockwise direction according to actual needs.
4. impeller as claimed in claim 3 is characterized in that described blade is vertically set between the forward and backward lateral plate.
5. impeller as claimed in claim 4 is characterized in that, the number of described blade can be increased or be reduced by the actual demand decision.
6. impeller as claimed in claim 5 is characterized in that described blade can be arranged to the form that deviated splitter vane alternates.
7. impeller as claimed in claim 6 is characterized in that, described impeller can be made by described pre-epimeron gummed or the impulse welding of described pre-epimeron highfrequency welding or the use mould once-through of loosing core when making.
8. impeller as claimed in claim 1 or 2, it is characterized in that, to adopt according to the needs of power being connected of described impeller and power and the incorporate flange plate of described impeller epimeron is fastenedly connected with prohibiting firmware, or adopt central authorities at described impeller epimeron to be provided with and be with the metal connecting piece of keyway to be connected with power.
9. impeller as claimed in claim 8 is characterized in that, described impeller can use the synthetic plastic once-through to make.
10. impeller as claimed in claim 7, it is characterized in that, to adopt according to the needs of power being connected of described impeller and power and the incorporate flange plate of described impeller epimeron and fastening piece are fastenedly connected, or the metal connecting piece that adopts central authorities at described impeller epimeron that the band keyway is set is connected with power, and described impeller can use plastic production.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01277603 CN2528985Y (en) | 2001-12-13 | 2001-12-13 | Enclosed impeller for high-speed centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01277603 CN2528985Y (en) | 2001-12-13 | 2001-12-13 | Enclosed impeller for high-speed centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2528985Y true CN2528985Y (en) | 2003-01-01 |
Family
ID=33681321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01277603 Expired - Lifetime CN2528985Y (en) | 2001-12-13 | 2001-12-13 | Enclosed impeller for high-speed centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2528985Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003461A (en) * | 2015-06-29 | 2015-10-28 | 肖彦均 | Sealing structure of fan impeller blades for dust collector |
| CN108278222A (en) * | 2018-01-11 | 2018-07-13 | 袁芳革 | Fume chamber exhaust fan |
| CN110345092A (en) * | 2019-06-19 | 2019-10-18 | 上海德惠特种风机有限公司 | A kind of blower that air supply efficiency is high |
-
2001
- 2001-12-13 CN CN 01277603 patent/CN2528985Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003461A (en) * | 2015-06-29 | 2015-10-28 | 肖彦均 | Sealing structure of fan impeller blades for dust collector |
| CN108278222A (en) * | 2018-01-11 | 2018-07-13 | 袁芳革 | Fume chamber exhaust fan |
| CN110345092A (en) * | 2019-06-19 | 2019-10-18 | 上海德惠特种风机有限公司 | A kind of blower that air supply efficiency is high |
| CN110345092B (en) * | 2019-06-19 | 2021-06-01 | 上海德惠特种风机有限公司 | Fan that air supply efficiency is high |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20111213 Granted publication date: 20030101 |