CN104963891A - Dirt retention prevention draught fan impeller with wedge-shaped blades and disk-shaped back plate - Google Patents
Dirt retention prevention draught fan impeller with wedge-shaped blades and disk-shaped back plate Download PDFInfo
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- CN104963891A CN104963891A CN201510464748.1A CN201510464748A CN104963891A CN 104963891 A CN104963891 A CN 104963891A CN 201510464748 A CN201510464748 A CN 201510464748A CN 104963891 A CN104963891 A CN 104963891A
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Abstract
The invention discloses a dirt retention prevention draught fan impeller with a wedge-shaped blades and a disk-shaped back plate. The dirt retention prevention draught fan impeller with the wedge-shaped blades and the disk-shaped back plate comprises the impeller back plate, an impeller panel and the blades, the blades are arranged to be in a hollow wedge shape symmetric about the radial direction and center of an impeller shaft, and the impeller back plate is in a disk shape; the hollow wedge-shaped blades are connected with the impeller panel and welded to the disk-shaped impeller back plate to form an impeller body; an air inlet is formed in the impeller panel, the disk-shaped impeller back plate is fixed and connected with a shaft base through rivets, and the shaft base is connected with a draught fan shaft through a shaft hole in a matched mode. When the dirt retention prevention draught fan impeller with the wedge-shaped blades and the disk-shaped back plate is used, since the blades are designed to be in a hollow wedge shape with blade shafts centrosymmetric in the radial directions, during high-speed rotating, the centrifuge self-cleaning function of the surfaces of the blades is achieved under the centrifugal force function, dirt is subjected to the centrifugal force function and can not be attached to the blades, dirt retention can not occur, and the dirt retention prevention draught fan impeller with the wedge-shaped blades and the disk-shaped back plate is particularly suitable for wide impeller large draught fans that the distance between a front end plate and a rear end plate of each impeller is large and the transporting air flow is also particularly large; by means of the disk-shaped back plate, the compressive strength is improved, and the service life of the draught fan is prolonged.
Description
Technical field
The present invention relates to a kind of draught fan impeller, specifically refer to the anti-laying dust draught fan impeller that blade is wedge shape, backboard is dish.
Background technique
Blower fan is the power equipment carrying out gas conveying; have and apply extremely widely; but all contain certain dust in the air-flow of most of use occasion; during blower fan work; air-flow by during the draught fan impeller of High Rotation Speed due to centrifugation, dust granule can depart from air-flow phase and deposit and be attached on draught fan impeller.
Because the rotating speed of draught fan impeller is general all higher, as long as there is micro-dust to exist in air-flow, all more dust can be accumulated after working long hours, thus change the balance of draught fan impeller rotation, if draught fan impeller does not have self purification not clear up in time to dust yet, will cumulative and progressively change draught fan impeller Static and dynamic balance, thus produce vibration.Have the dust that part hardens to be come off by vibration once run into, will balance away from the dynamic rotary of blower fan immediately, then produce judder, this may cause serious personnel and device security accident.
Therefore, if can a kind of draught fan impeller be designed, Automatic clearance can be carried out and just do not worry causing dust accumulation, for keeping the reliable and stable work of blower fan and stopping the meaning that security incident all has particular importance.
Summary of the invention
The technical problem to be solved in the present invention overcomes the deficiencies in the prior art exactly, provides a kind of simple and practical, the anti-laying dust draught fan impeller that the blade of energy Automatic clearance dust is wedge shape, backboard is dish.
For overcoming the deficiencies in the prior art, the present invention takes following technological scheme:
The anti-laying dust draught fan impeller that blade is wedge shape, backboard is dish, comprises impeller backboard, impeller panel and blade, it is characterized in that: vane collocation becomes impeller shaft radial direction, centrosymmetric hollow wedge, and impeller backboard is dish; Hollow wedge blade connects impeller panel and is welded to form impeller bodies with dish-shaped impeller backboard; Impeller panel is provided with intake grill, dish-shaped impeller backboard by the fixing also connection shaft seat of rivet, and axle bed is connected by axis hole and fan shaft.
When draught fan impeller of the present invention uses, because blade design becomes hollow wedge, and sharf radial center is symmetrical, thus during High Rotation Speed, blade surface has centrifugal self purification under centrifugal action, make dust be subject to centrifugal action and cannot adhere to, dynamic, the static equilibrium of impeller would not be affected like this, more can not accumulate dust; The technological scheme of this blade structure, be particularly suitable for end plate distance before and after impeller large, namely impeller thickness is large especially, and the required delivery air amount also large blower fan of king-sized wide impeller adopts.
Compared with common impeller backboard, the characteristics and advantages of dish impeller backboard is: when steel plate thickness is the same, dish backboard due to rigidity reinforced, stress dispersion, elastic buffer improve and shape stability also significantly improve, thus bearing capacity can be enhanced about more than once on common flat backboard basis.Because backboard almost carries whole fans load, understand more durable so dish made by backboard, the wheel hub of truck is because have disc structure, so bearing capacity strengthens, also more durable.
Compared with prior art, beneficial effect of the present invention is also:
Blade design becomes hollow wedge, and sharf radial center is symmetrical, and the blower fan backboard making it connect and the anti-relative torsion of panel, to extrude rigidity extremely strong, can stop to use the fan blade caused to connect the fracture of backboard root for a long time.
Blade design becomes hollow wedge, and sharf radial center is symmetrical, even also can obtain higher intensity with thinner board making draught fan impeller, ensures to stablize, reliably use, can save material, be convenient to make, be also conducive to light and handyization of equipment.
Blade ingehious design is become hollow wedge by the present invention, and the shape of sharf radial center symmetry, achieve the real-time cleaning of dust, extend the security incident also effectively stopping dust accumulation initiation working life of equipment, have a extensive future.
Accompanying drawing explanation
Fig. 1 is plane structure schematic diagram of the present invention.
Fig. 2 is cross-sectional view of the present invention.
In figure, each label represents:
1, Wedge blade; 2, impeller cylindrical; 3, impeller intake grill; 4, axle bed; 5, rivet; 6, axis hole; 7, dish-shaped impeller backboard; 8, impeller panel.
Embodiment
Now by reference to the accompanying drawings, the present invention is illustrated further.
Blade is wedge shape as depicted in figs. 1 and 2, backboard is the anti-laying dust draught fan impeller of dish, and comprise impeller backboard 7, impeller panel 8 and blade 1, blade 1 is arranged to impeller shaft radial direction, centrosymmetric hollow wedge, and impeller backboard 7 be dish-shaped; Hollow wedge blade 1 connects impeller panel 8 and is welded to form impeller bodies with dish-shaped impeller backboard 7; Impeller panel 8 is provided with intake grill 3, dish-shaped impeller backboard 7 by the fixing also connection shaft seat 4 of rivet 5, and axle bed 4 is connected by axis hole 6 and fan shaft.
When this draught fan impeller uses, because blade design becomes hollow wedge, and sharf radial center is symmetrical, thus during High Rotation Speed, blade surface has centrifugal self purification under centrifugal action, make dust be subject to centrifugal action and cannot adhere to, dynamic, the static equilibrium of impeller would not be affected like this, more can not accumulate dust; The technological scheme of this blade structure, be particularly suitable for end plate distance before and after impeller large, namely impeller thickness is large especially, and the required delivery air amount also large blower fan of king-sized wide impeller adopts.
Dish backboard due to rigidity reinforced, stress dispersion, elastic buffer improve and shape stability also significantly improve, thus bearing capacity can be enhanced about more than once on common flat backboard basis.Because backboard almost carries whole fans load, understand more durable so dish made by backboard, the wheel hub of truck is because have disc structure, so bearing capacity strengthens, also more durable.
Above-mentioned just preferred embodiment of the present invention, not does any pro forma restriction to the present invention.Any those of ordinary skill in the art, when not departing from technical solution of the present invention scope, can utilize the technology contents of above-mentioned announcement to make many possible variations and modification to technical solution of the present invention, or being revised as the Equivalent embodiments of equivalent variations.Therefore, every content not departing from technical solution of the present invention, according to the technology of the present invention essence to any simple modification made for any of the above embodiments, equivalent variations and modification, all should drop in the scope of technical solution of the present invention protection.
Claims (1)
1. blade is wedge shape, backboard is the anti-laying dust draught fan impeller of dish, comprises impeller backboard, impeller panel and blade, it is characterized in that: vane collocation becomes that impeller shaft is radial, centrosymmetric hollow wedge, and impeller backboard be dish-shaped; Hollow wedge blade connects impeller panel and is welded to form impeller bodies with dish-shaped impeller backboard; Impeller panel is provided with intake grill, dish-shaped impeller backboard by the fixing also connection shaft seat of rivet, and axle bed is connected by axis hole and fan shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510464748.1A CN104963891A (en) | 2015-08-03 | 2015-08-03 | Dirt retention prevention draught fan impeller with wedge-shaped blades and disk-shaped back plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510464748.1A CN104963891A (en) | 2015-08-03 | 2015-08-03 | Dirt retention prevention draught fan impeller with wedge-shaped blades and disk-shaped back plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104963891A true CN104963891A (en) | 2015-10-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510464748.1A Pending CN104963891A (en) | 2015-08-03 | 2015-08-03 | Dirt retention prevention draught fan impeller with wedge-shaped blades and disk-shaped back plate |
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| Country | Link |
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| CN (1) | CN104963891A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422517A (en) * | 2015-12-18 | 2016-03-23 | 段志勇 | Fan-static electricity dust removal system |
| 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 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR551607A (en) * | 1921-08-30 | 1923-04-10 | Anciens Etablissements Grouvel | Blade for centrifugal fan impeller |
| JPS4962206U (en) * | 1972-09-08 | 1974-05-31 | ||
| CN1405952A (en) * | 2001-09-12 | 2003-03-26 | 株式会社东芝 | Fully-closed external-cooling type electric motor |
| JP2015095962A (en) * | 2013-11-12 | 2015-05-18 | 株式会社東芝 | Rotary machine |
| CN204783826U (en) * | 2015-08-03 | 2015-11-18 | 吉首大学 | What blade was wedge, backplate for dish prevents laying dust fan wheel |
-
2015
- 2015-08-03 CN CN201510464748.1A patent/CN104963891A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR551607A (en) * | 1921-08-30 | 1923-04-10 | Anciens Etablissements Grouvel | Blade for centrifugal fan impeller |
| JPS4962206U (en) * | 1972-09-08 | 1974-05-31 | ||
| CN1405952A (en) * | 2001-09-12 | 2003-03-26 | 株式会社东芝 | Fully-closed external-cooling type electric motor |
| JP2015095962A (en) * | 2013-11-12 | 2015-05-18 | 株式会社東芝 | Rotary machine |
| CN204783826U (en) * | 2015-08-03 | 2015-11-18 | 吉首大学 | What blade was wedge, backplate for dish prevents laying dust fan wheel |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422517A (en) * | 2015-12-18 | 2016-03-23 | 段志勇 | Fan-static electricity dust removal system |
| CN105422517B (en) * | 2015-12-18 | 2019-11-22 | 段志勇 | Blower electrostatic precipitation system |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151007 |
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| RJ01 | Rejection of invention patent application after publication |