CN2044016U - Impeller of centrifugal blower - Google Patents
Impeller of centrifugal blower Download PDFInfo
- Publication number
- CN2044016U CN2044016U CN 88206343 CN88206343U CN2044016U CN 2044016 U CN2044016 U CN 2044016U CN 88206343 CN88206343 CN 88206343 CN 88206343 U CN88206343 U CN 88206343U CN 2044016 U CN2044016 U CN 2044016U
- Authority
- CN
- China
- Prior art keywords
- impeller
- impeller blade
- blade
- outer contour
- meridian section
- 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.)
- Pending
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a centrifugal fan impeller which is composed of two or more connected smooth curves at the meridian sectional surface of the impeller blade. The outline wire of the back pressure surface of the meridian sectional surface of the impeller blade is partially coincident with the exit periphery of the flow passage of the impeller. The centrifugal fan impeller is characterized in that the thickness of the impeller blade is changeable; the thickness of the impeller blade gradually increases from one end close to the circle center of the impeller to the outside along the flow passage of the impeller, and the thickness of the impeller blade gradually reduces from the flow passage exit close to the impeller to the outside along the flow passage of the impeller. The inner efficiency of the centrifugal fan impeller of the utility model is improved more than 10%, and the noise is lowered.
Description
The utility model is a kind of centrifugal fan impeller with high internal efficiency, belongs to the non variable capacitance type centrifugal pump.
Existing centrifugal fan impeller blade is generally equal thickness, has the factor of following three kinds of reduction blower fan internal efficiencies in impeller channel or near the runner exit at least:
1. because blade always has certain thickness, when gas when impeller channel flows out, the sudden enlargement of through-flow space, thus cause expansion-loss;
2. gas flowing in impeller channel is mobile for diffusion, and the existence of boundary layer and airflow breakaway causes eddy current loss in the impeller channel;
3. because the difference of blade pressure surface and back pressure face overdraught pressure exports concourses at two adjacent impeller channels, go up the bigger pressure gradient of existence along the garden week of impeller channel outlet, and cause the tail loss.
The general minimizing blade that adopts reduces above-mentioned first expansion-loss in the method for air flow outlet thickness: control impeller channel equivalent divergent angle, to reduce by second eddy current loss; Increase the thickness of blade, can reduce the pressure gradient that causes above-mentioned the 3rd tail loss, but can cause that above-mentioned first expansion-loss increases in the impeller channel outlet port.
The purpose of this utility model is by changing the structure and the shape of centrifugal fan impeller blade, reduce the loss of gas in impeller channel, improving the internal efficiency of centrifugal fan.
Technical solution of the present utility model is as follows:
A kind of centrifugal fan impeller is provided, and its impeller blade meridian section external frame is joined by two or more smoothed curve and forms, and impeller blade meridian section back pressure face outer contour and impeller channel outlet port garden week partially overlap.It is characterized in that impeller blade is the thickening degree, promptly the line segment length that is intercepted on the normal of impeller blade meridian section pressure surface outer contour each point by impeller blade meridian section pressure surface outer contour and back pressure face outer contour changes.Impeller blade thickness outwards increases along impeller channel gradually from the end near the impeller garden heart, and is outwards reducing gradually along impeller channel near the impeller channel outlet port.
Specify embodiment of the present utility model below in conjunction with accompanying drawing.The utility model has an accompanying drawing.Among the figure, 1 is impeller blade, and 2 is impeller channel outlet port garden week, and 3 is impeller blade meridian section pressure surface outer contour, and 4 is impeller blade meridian section back pressure face outer contour.
This impeller can adopt the high tensile aluminium alloy casting, or adopts the steel plate welding fabrication after the punching press, or adopts the fiber reinforced plastic manufacturing.Its impeller blade meridian section external frame is joined by two smoothed curves and forms, blade pressure surface outer contour is made up of one section garden arc, blade backpressure face outer contour is made up of the smoothed curve that the garden arc of three sections different curvature radius constitutes, wherein near garden, impeller channel outlet port week the place be one section radius of curvature and consistent and garden that overlap with it arc of all radius of curvature in garden, impeller channel outlet port.Impeller blade thickness outwards increases along impeller channel gradually from the end near the impeller garden heart, and is outwards reducing gradually along impeller channel near the impeller channel outlet port.
The utility model has the advantage of: the Main Ingredients and Appearance of the utility model take above-mentioned eddy current loss and Trailing Edge Loss as the summation of above-mentioned three losses takes corresponding measure to be intended to reduce the summation of above-mentioned three losses as rationale.
Implementing centrifugal fan internal efficiency of the present utility model improves more than 10%. Because the minimizing of windage loss makes gas more reasonable at the flow process of blower fan inside, so fan noise reduces greatly.
Claims (1)
1, a kind of centrifugal fan impeller, its impeller blade meridian section external frame is joined by two or more smoothed curve and forms, impeller blade meridian section back pressure face outer contour and impeller channel outlet port garden week partially overlap, it is characterized in that impeller blade is the thickening degree, promptly the line segment length that is intercepted on the normal of impeller blade meridian section pressure surface outer contour each point by impeller blade meridian section pressure surface outer contour and back pressure face outer contour changes, impeller blade thickness outwards increases along impeller channel gradually from the end near the impeller garden heart, and is outwards reducing gradually along impeller channel near the impeller channel outlet port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88206343 CN2044016U (en) | 1988-06-03 | 1988-06-03 | Impeller of centrifugal blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88206343 CN2044016U (en) | 1988-06-03 | 1988-06-03 | Impeller of centrifugal blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2044016U true CN2044016U (en) | 1989-09-06 |
Family
ID=4840548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88206343 Pending CN2044016U (en) | 1988-06-03 | 1988-06-03 | Impeller of centrifugal blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2044016U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106704258A (en) * | 2016-09-12 | 2017-05-24 | 东莞市卓奇电子科技有限公司 | Centrifugal impeller guide vane and centrifugal impeller |
| CN111828383A (en) * | 2020-08-06 | 2020-10-27 | 苏州顶裕节能设备有限公司 | Impeller with dolphin-like streamline blades |
| CN114412813A (en) * | 2021-12-29 | 2022-04-29 | 德安县塑丽龙纺织有限公司 | Dust removal device for textile production process |
-
1988
- 1988-06-03 CN CN 88206343 patent/CN2044016U/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106704258A (en) * | 2016-09-12 | 2017-05-24 | 东莞市卓奇电子科技有限公司 | Centrifugal impeller guide vane and centrifugal impeller |
| CN111828383A (en) * | 2020-08-06 | 2020-10-27 | 苏州顶裕节能设备有限公司 | Impeller with dolphin-like streamline blades |
| CN114412813A (en) * | 2021-12-29 | 2022-04-29 | 德安县塑丽龙纺织有限公司 | Dust removal device for textile production process |
| CN114412813B (en) * | 2021-12-29 | 2023-11-07 | 德安县塑丽龙纺织有限公司 | Dust removing device for textile production process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110529410B (en) | Mixed flow fan | |
| WO2023077648A1 (en) | Self-adaptive design method for bulb tubular pump guide vane, and bulb tubular pump guide vane | |
| CN219492667U (en) | Energy-saving centrifugal sewage pump | |
| CN108223425A (en) | A kind of high lift Bulb unit tubular pump | |
| CN114427543B (en) | Bionic centrifugal wind wheel and centrifugal fan | |
| CN110566285B (en) | Compact centripetal turbine guider | |
| CN109340179B (en) | High-strength centrifugal impeller and motor suitable for dust collector | |
| CN212225601U (en) | High-efficiency energy-saving centrifugal pump | |
| CN2044016U (en) | Impeller of centrifugal blower | |
| CN101344059A (en) | Reverse S type runner of mixed-flow turbine | |
| CN211623815U (en) | Air exhaust centrifugal impeller | |
| CN111535974A (en) | Low-water-head large-flow mixed-flow water turbine with double-inlet volute | |
| CN2100503U (en) | Vane flow-stabilizing device of turbines | |
| CN215444525U (en) | Integrated axial flow impeller | |
| CN204783814U (en) | High -efficient tubing pump of low specific speed | |
| CN211039075U (en) | Low-temperature immersed pump with guide vane ring inside | |
| CN2125032U (en) | Tubular turbine pump | |
| CN208950927U (en) | A kind of multi-blade fan | |
| CN109681462A (en) | Using the reversible axial-flow pump impeller of ellipse pointed combined-wing type | |
| CN111828097A (en) | 2000mm last-stage moving blade for half-speed nuclear turbine | |
| CN212536242U (en) | Volute type discharging section structure for multi-stage pump and multi-stage pump | |
| CN111734685A (en) | Ventilation device | |
| CN206487676U (en) | A kind of impeller of constant-pressure tangent pump | |
| CN210068568U (en) | Water inlet structure based on application of high-efficiency single-stage double-suction horizontal split pump | |
| CN221236915U (en) | High-efficient cooling fan is used to inverter motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |