CN108612668A - Low pressure centrifugal fan - Google Patents
Low pressure centrifugal fan Download PDFInfo
- Publication number
- CN108612668A CN108612668A CN201611125875.XA CN201611125875A CN108612668A CN 108612668 A CN108612668 A CN 108612668A CN 201611125875 A CN201611125875 A CN 201611125875A CN 108612668 A CN108612668 A CN 108612668A
- Authority
- CN
- China
- Prior art keywords
- centrifugal fan
- impeller
- runner
- casing
- low pressure
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/30—Vanes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention belongs to centrifugal fan fields, and in particular to a kind of low pressure centrifugal fan.A kind of low pressure centrifugal fan, including casing, impeller, air inlet ring, rivet, wheel hub, positioning sleeve, motor, shaft end disk, air inlet is equipped with outside the impeller, the outer edge of the casing is equipped with air outlet, the runner of the casing widens 10% than the runner of same model centrifugal fan casing, and the runner of impeller widens 10% than the runner of same model Centrifugal Fan Impeller.Compared to 4 72 original serial fans, the runner of impeller and casing is broadened, reduces the volume of wind turbine, it has selected simultaneously after veneer to circular arc molded line, 30 ° of blade inlet angle, 36 ° of blade outlet angle obtain highest total pressure efficiency while ensureing air pressure air flow；Heightening design has been carried out into and out of air port, has facilitated the subsequent construction of user.
Description
Technical field
The invention belongs to centrifugal fan fields, and in particular to a kind of low pressure centrifugal fan.
Background technology
Centrifugal fan is to improve gas pressure by the mechanical energy of input and supply gas side by side the machinery of body, it be it is a kind of from
Dynamic fluid machinery.Centrifugal blower is widely used in the ventilation of factory, mine, tunnel, cooling tower, vehicle, ship and building, row
Dirt and cooling；The ventilation of boiler and industrial furnace and air inducing；Cooling in the apparatus of air conditioning and domestic electric appliance and ventilation；
It the drying of cereal and selects and recommends；Inflation and propulsion of wind-tunnel wind regime and aircushion vehicle etc..
4-72 serial fans are to use widest low pressure centrifugal fan at present, are usually used in ventilation, dedusting, grain add
The fields such as work, storage.National standard 4-72 serial fans are thin plate wing blades, and blade is easily ground by dust erosion in practical applications
It wears, to destroy dynamic balance of impeller, the service life of impeller greatly reduces.And inlet and outlet of the 4-72 serial fans in design
Flange Planeization designs, and air inlet pipe laying need to dismantle air inlet, and operating space is narrow when air outlet pipe laying, in reality
Have the shortcomings that in difficult to install.
Invention content
For the above-mentioned prior art, the object of the present invention is to provide a kind of low pressure centrifugal fans, same model more originally
Wind turbine, total pressure efficiency improves, and reduces energy consumption and cost.To realize that the purpose, the present invention adopt the following technical scheme that：
A kind of low pressure centrifugal fan, including casing, impeller, air inlet ring, rivet, wheel hub, positioning sleeve, motor, shaft end disk,
Air inlet is equipped with outside the impeller, the outer edge of the casing is equipped with air outlet, and the runner ratio of the casing is centrifuged with model
The runner of ventilation blower casing widens 10%, and the runner of impeller widens 10% than the runner of same model Centrifugal Fan Impeller.
Further, the impeller includes blade, and the molded line of the blade is after veneer to circular arc molded line.
Further, the inlet angle of the blade is 30 °, and the angle of outlet is 36 °.
Further, the height of the air inlet increases 80-120mm compared to the air inlet relatively with model wind turbine.
Further, the height of the air outlet increases 30-70mm compared to the air outlet relatively with model wind turbine.
Further, further include organic block, the engine base is set to the lower section of the motor, passes through screw and motor
It is connected.
Compare the prior art, and this product has the advantages that：
（1）Compared to original 4-72 serial fans, the runner of impeller and casing is broadened, the volume of wind turbine is reduced, selects simultaneously
With to circular arc molded line, 30 ° of blade inlet angle, 36 ° of blade outlet angle obtains while ensureing air pressure air flow after veneer
Highest total pressure efficiency；
（2）Inlet and outlet Flange Planeization design of original 4-72 serial fans in design, air inlet pipe laying need to dismantle
Air inlet, operating space is narrow when air outlet pipe laying, and the present invention has carried out heightening design to inlet and outlet, facilitates user
Subsequent construction.
Description of the drawings
Fig. 1 is schematic structural view of the invention；
In figure, 1- casings, 2- impellers, 21- blades, 3- air inlet rings, 4- rivets, 5- wheel hubs, 6- positioning sleeves, 7- motor, 8- machines
Seat, 9- air inlets, 10- air outlets, 11- engine bases.
Specific implementation mode
With reference to embodiment and attached drawing, the invention will be further described.
A kind of low pressure centrifugal fan, including casing 1, impeller 2, air inlet ring 3, rivet 4, wheel hub 5, positioning sleeve 6, motor
7, shaft end disk 8, engine base 11 are set to the lower section of the motor 7, are connected with motor by screw；The impeller 2 includes
There is blade 21, the molded line of the blade 21 is, to circular arc molded line, the inlet angle of the blade 21 is 30 °, and the angle of outlet is after veneer
36°；2 outside of the impeller is equipped with air inlet 9, and height with the air inlet of the wind turbine of model compared to relatively 80-120mm is increased, most
It is well to increase 100mm；The outer edge of the casing 1 is equipped with air outlet 10, and height is compared to the air outlet relatively with the wind turbine of model
Increase 30-70mm, preferably 50mm；The runner of the casing 1 widens 10% than the runner of same model centrifugal fan casing, leaf
The runner of wheel 2 widens 10% than the runner of same model Centrifugal Fan Impeller.
Finally it should be noted that：Above example is only to illustrate the present invention and not limits technology described in the invention
Scheme；Therefore, although this specification with reference to above-mentioned each embodiment to present invention has been detailed description, this
Field it is to be appreciated by one skilled in the art that still can modify to the present invention or equivalent replacement；And all do not depart from this
The technical solution of the spirit and scope of invention and its improvement should all be covered in scope of the presently claimed invention.
Claims (6)
1. a kind of low pressure centrifugal fan, including casing（1）, impeller（2）, air inlet ring（3）, rivet（4）, wheel hub（5）, positioning sleeve
（6）, motor（7）, shaft end disk（8）, the impeller（2）Outside is equipped with air inlet（9）, the casing（1）Outer edge set
There is air outlet（10）, it is characterised in that：The casing（1）Runner widen 10% than the runner of same model centrifugal fan casing,
Impeller（2）Runner widen 10% than the runner of same model Centrifugal Fan Impeller.
2. low pressure centrifugal fan according to claim 1, it is characterised in that：The impeller（2）It include blade（21）,
The blade（21）Molded line be after veneer to circular arc molded line.
3. low pressure centrifugal fan according to claim 2, it is characterised in that：The blade（21）Inlet angle be 30 °,
The angle of outlet is 36 °.
4. low pressure centrifugal fan according to claim 1, it is characterised in that：The air inlet（9）Height compare
Height with model air inlet increases 80-120mm.
5. low pressure centrifugal fan according to claim 4, it is characterised in that：The air outlet（10）Height compare
Height with model fan outlet increases 30-70mm.
6. low pressure centrifugal fan according to claim 1, it is characterised in that：It further include organic block（11）, the engine base
（11）It is set to the motor（7）Lower section, be connected with motor by screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611125875.XA CN108612668A (en) | 2016-12-09 | 2016-12-09 | Low pressure centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611125875.XA CN108612668A (en) | 2016-12-09 | 2016-12-09 | Low pressure centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108612668A true CN108612668A (en) | 2018-10-02 |
Family
ID=63643492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611125875.XA Pending CN108612668A (en) | 2016-12-09 | 2016-12-09 | Low pressure centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108612668A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1470769A (en) * | 2002-07-25 | 2004-01-28 | Lg电子株式会社 | Centrifugal fan |
| WO2010126383A1 (en) * | 2009-04-29 | 2010-11-04 | Fisher & Paykel Healthcare Limited | A fan unit with improved surge characteristics |
| CN102812253A (en) * | 2010-03-18 | 2012-12-05 | 三菱电机株式会社 | Cross-flow Fan And Air Conditioner |
| CN204942028U (en) * | 2015-09-16 | 2016-01-06 | 镇江市丹徒区双诚风机厂 | Low pressure centrifugal fan |
| CN105626554A (en) * | 2016-03-17 | 2016-06-01 | 北京斯特透平机械有限公司 | Centrifugal supercharger |
-
2016
- 2016-12-09 CN CN201611125875.XA patent/CN108612668A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1470769A (en) * | 2002-07-25 | 2004-01-28 | Lg电子株式会社 | Centrifugal fan |
| WO2010126383A1 (en) * | 2009-04-29 | 2010-11-04 | Fisher & Paykel Healthcare Limited | A fan unit with improved surge characteristics |
| CN102812253A (en) * | 2010-03-18 | 2012-12-05 | 三菱电机株式会社 | Cross-flow Fan And Air Conditioner |
| CN204942028U (en) * | 2015-09-16 | 2016-01-06 | 镇江市丹徒区双诚风机厂 | Low pressure centrifugal fan |
| CN105626554A (en) * | 2016-03-17 | 2016-06-01 | 北京斯特透平机械有限公司 | Centrifugal supercharger |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104653496A (en) | Single-double-suction adjustable centrifugal ventilator | |
| CN206487647U (en) | A kind of low-noise energy-saving flow-mixing blower fan | |
| CN104653515A (en) | Double-suction type centrifugal ventilation fan | |
| CN109404305B (en) | Bionic blade volute-free centrifugal ventilator | |
| CN101975177B (en) | Built-in turbo shaft flow motor type strong fan | |
| CN205388042U (en) | Centrifugal fan's impeller | |
| CN103148019A (en) | Double intake high-pressure large flow rate cement kiln centrifugal fan | |
| CN202228423U (en) | Centrifugal air blower of double-suction semi-open type impeller | |
| CN110762050A (en) | Centrifugal fan impeller | |
| CN215860963U (en) | High-strength impeller of air blower | |
| CN108612668A (en) | Low pressure centrifugal fan | |
| CN204942028U (en) | Low pressure centrifugal fan | |
| CN206903892U (en) | Double air channel blower fans | |
| CN205349854U (en) | Ventilating fan and blast apparatus | |
| CN205779897U (en) | Centrifugal fan | |
| CN107781176A (en) | A kind of stacked Multi-layer centrifugal formula blower fan | |
| CN204942075U (en) | Grain processing field centrifugal blower | |
| CN103321955A (en) | Energy-saving fan | |
| CN203892217U (en) | Multi-level high-pressure blower | |
| CN208380923U (en) | S type vanes close formula impeller for Small Centrifugal Fan | |
| CN202690526U (en) | Draught fan impeller | |
| CN204942071U (en) | New medical level blower fan | |
| CN206439231U (en) | A kind of new and effective backward centrifugal fan | |
| CN203009386U (en) | Blade of blower fan | |
| CN111963461A (en) | Novel disrotatory fan |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181002 |
|
| WD01 | Invention patent application deemed withdrawn after publication |