CN202117979U - Centrifugal impeller - Google Patents
Centrifugal impeller Download PDFInfo
- Publication number
- CN202117979U CN202117979U CN2011202121411U CN201120212141U CN202117979U CN 202117979 U CN202117979 U CN 202117979U CN 2011202121411 U CN2011202121411 U CN 2011202121411U CN 201120212141 U CN201120212141 U CN 201120212141U CN 202117979 U CN202117979 U CN 202117979U
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- impeller
- centrifugal
- blades
- disk
- flow
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Abstract
The utility model discloses a centrifugal impeller belonging to the technical field of centrifugal fan impellers. The centrifugal impeller comprises an impeller body and an impeller shaft; a wheel hub is fixedly connected onto a rear disk; two sides of blades are respectively and fixedly connected with a front disk and the rear disk; the outlet diameter of the impeller is 80 cm; 12-14 blades are evenly distributed between the front disk and the rear disk along the circumferential direction so as to form the impeller body together with the front disk, the rear disk and the wheel hub; the outlet width of the impeller is 20.8-21.2 cm; and the outlet mounting angle of the blades is 43.5-44.5 degrees. The centrifugal impeller disclosed by the utility model has the following advantages that: through optimizing key structural parameters, such as the number of the blades, the outlet width of the impeller, the outlet mounting angle of the blades and the like, the inside flow field of the impeller is improved, the weak flow zone of the flow passage of the impeller is reduced and the shearing layer between a jet flow and a weak flow is enlarged, and the entropy generation region and the strength of the entropy generation region in the impeller are reduced; the efficiency and the load of the centrifugal impeller are enhanced, thus the application range of the centrifugal impeller is widened; the problem that a fan is lack of flow rate or total pressure caused by the increase of pipeline resistance is solved; and the centrifugal impeller is suitable for centrifugal fans.
Description
Technical field
The utility model belongs to the centrifugal blower fan blade wheel technical field, particularly a kind of centrifugal impeller.
Background technique
In the receded disk impeller field that conveyance fluid is used, the effect of centrifugal impeller is pressure potential and the kinetic energy that the mechanical energy of motor is converted to air.Visual plant as ventilation system has obtained extensive use at industrial field.Many draught fan impellers can be satisfied the demand at initial operating stage, yet, after operation a period of time,, cause that compressor flow or total head are not enough owing to reasons such as pipe resistance increases, influence blower fan load and efficient, and then influence its using scope.Therefore need a kind of novel impeller of design, solve when fan operation after a period of time owing to reasons such as pipe resistance increases, cause the problem of compressor flow or total head deficiency; Under the prerequisite that volute of blower, slip ring etc. is not changed, install additional after the novel impeller when the pipe resistance performance curve is constant, compressor flow is increased, total head significantly improves, and efficient slightly increases.
The model utility content
The purpose of the utility model is that background technique is said to be installed additional after the novel impeller when the pipe resistance performance curve is constant in order to solve, and compressor flow is increased, and total head significantly improves; The problem that efficient slightly increases provides a kind of centrifugal impeller, it is characterized in that; Centrifugal impeller comprises impeller wheel body and impeller shaft 5, and the impeller wheel body is made up of wheel hub 4, shroud 1, hub disk 3 and blade 2, and wheel hub 4 is fixed on the hub disk 3; Blade 2 both sides are affixed with shroud 1 and hub disk 3 respectively; The impeller outlet diameter is 80 centimetres, and 12～14 blades 2 along the circumferential direction evenly distribute between shroud 1 and hub disk 3, and impeller outlet width is 20.8～21.2 centimetres; The blade exit established angle is 43.5～44.5 degree, constitutes removably connecting of impeller wheel body and impeller shaft 5 through key and keyway between the wheel bore of impeller shaft 5 and wheel hub 4.
Said blade 2 is aerofoil profile or single panel type.
The number of blade of the utility model, impeller outlet width and three key structure parameters of blade exit established angle are that the optimum combination that satisfies blower fan load and efficient distributes, and are the key technologies of the utility model.
The beneficial effect of the utility model does; Because key structure parameters such as the number of blade, impeller outlet width and blade exit established angle are optimized; Improved the impeller interior flow field; Wake zone in the impeller channel reduce and jet-wake flow between the layer of cutting enlarge, territory, impeller internal entropy producing region and intensity reduce; Improve the efficient and the load of centrifugal impeller, widened its application area; Under the same design operating mode, the blower fan total head can improve 5%～7%, and efficient can improve 0.5～1%, and efficient district widens, and the flow of blower fan best efficiency point is increased.The utility model solves because the pipe resistance increase causes compressor flow or the not enough problem of total head effectively, only needs the more impeller of ventilating fan, and spiral case, slip ring all need not changed, and have practicability, are applicable to centrifugal blower.
Description of drawings
Fig. 1 is the utility model centrifugal impeller embodiment's a structural representation;
Fig. 2 is the utility model centrifugal impeller embodiment's a plan structure schematic representation.
Among the figure, 1--shroud, 2--blade, 3--hub disk, 4--wheel hub, 5--impeller shaft.
Embodiment
Below in conjunction with accompanying drawing and instantiation, the utility model is described further:
Fig. 1 and Fig. 2 are respectively the utility model centrifugal impeller embodiment's main TV structure schematic representation and plan structure schematic representation.The impeller outlet diameter is that 80 centimetres centrifugal impeller comprises impeller wheel body and impeller shaft 5; The impeller wheel body is made up of wheel hub 4, shroud 1, hub disk 3 and blade 2; Wheel hub 4 is fixed on the hub disk 3; Blade 2 both sides are affixed with shroud 1 and hub disk 3 respectively, and 12～14 blades 2 along the circumferential direction evenly distribute between shroud 1 and hub disk 3, constitute removably connecting of impeller wheel body and impeller shaft 5 through key and keyway between the wheel bore of impeller shaft 5 and wheel hub 4.The impeller inlet diameter of present embodiment is 58.2 centimetres; Blade 2 is an aerofoil profile, and the optimum combination of the number of blade, impeller outlet width and three key structure parameters of blade exit established angle is that impeller outlet width is 21 centimetres; The blade exit established angle is 43.9 degree, and the number of blade is 14.
After present embodiment was used for blower fan, total head improved 6.8%, and efficient improves 0.5%, and the best efficiency point flow increases, and efficient district widens.This impeller is applicable to the blower fan in fields such as power station, solves when pipe resistance increase etc. to cause total head or underload problem, and can improve fan efficiency simultaneously, and effectively energy saving satisfies blower fan load and efficient.
Claims (2)
1. a centrifugal impeller is characterized in that, centrifugal impeller comprises impeller wheel body and impeller shaft (5); The impeller wheel body is made up of wheel hub (4), shroud (1), hub disk (3) and blade (2); Wheel hub (4) is fixed on the hub disk (3), and blade (2) both sides are affixed with shroud (1) and hub disk (3) respectively, and the impeller outlet diameter is 80 centimetres; 12～14 blades (2) along the circumferential direction evenly distribute between shroud (1) and hub disk (3); Impeller outlet width is 20.8～21.2 centimetres, and the blade exit established angle is 43.5～44.5 degree, constitutes removably connecting of impeller wheel body and impeller shaft (5) through key and keyway between the wheel bore of impeller shaft (5) and wheel hub (4).
2. a kind of centrifugal impeller according to claim 1 is characterized in that, said blade (2) is aerofoil profile or single panel type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202121411U CN202117979U (en) | 2011-06-22 | 2011-06-22 | Centrifugal impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202121411U CN202117979U (en) | 2011-06-22 | 2011-06-22 | Centrifugal impeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202117979U true CN202117979U (en) | 2012-01-18 |
Family
ID=45459048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202121411U Expired - Fee Related CN202117979U (en) | 2011-06-22 | 2011-06-22 | Centrifugal impeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202117979U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102825689A (en) * | 2012-08-23 | 2012-12-19 | 苏州日邦自动化科技有限公司 | Epoxy resin curing furnace |
-
2011
- 2011-06-22 CN CN2011202121411U patent/CN202117979U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102825689A (en) * | 2012-08-23 | 2012-12-19 | 苏州日邦自动化科技有限公司 | Epoxy resin curing furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120118 Termination date: 20140622 |
|
| EXPY | Termination of patent right or utility model |