CN204476872U - The leading device of a kind of centrifugal blower - Google Patents
The leading device of a kind of centrifugal blower Download PDFInfo
- Publication number
- CN204476872U CN204476872U CN201520057668.XU CN201520057668U CN204476872U CN 204476872 U CN204476872 U CN 204476872U CN 201520057668 U CN201520057668 U CN 201520057668U CN 204476872 U CN204476872 U CN 204476872U
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- rectifier
- cylinder
- current plate
- airscoop shroud
- welded
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Abstract
The utility model discloses the leading device of a kind of centrifugal blower, the utility model comprises airscoop shroud, cylinder, first rectifier, second rectifier, first current plate and the second current plate, the small-bore one end of airscoop shroud is welded on one end of cylinder, flange plate is welded on bigbore one end of airscoop shroud, polylith first current plate is along the internal face of cylinder axis uniform welding at cylinder, the outer wall of the first rectifier is welded with every block first current plate, the elongation line that second current plate is arranged on the first current plate is welded on the internal face of the first rectifier, the outer wall of the second rectifier is welded with every block second current plate, the utility model can reduce Centrifugal Fan Impeller power, improves fan performance.
Description
Technical field
The utility model belongs to testing installation technical field, especially relates to the leading device of a kind of centrifugal blower.
Background technique
Centrifugal blower is as a kind of universal machine, be applied in multiple fields such as industry, agricultural, mining, chemical industry and building ventilation widely, it is excessive that data shows the general energy consumption of ventilator that China uses at present, the power consumption being often only industrial ventilator just accounts for 12% of the total electricity in the whole nation, therefore design high efficiency ventilator, energy saving resource is of great significance.
Blower fan needs realistic usage space in actual use, and this just makes air inlet system often be subject to the restriction in space, causes inlet distortion.And the consequence that this inlet distortion causes is exactly the mobility status that can affect in blower fan, aggravation Secondary Flow and flow separation, and turbulence intensity also can be aggravated, and then cause more loss, directly have influence on fan performance.Such as, the blower fan used in the industry, due to the restriction of the device space, intake duct often has one 90 ° bending, the local air-flow bending at this can produce Secondary Flow and whirlpool, will produce flow losses, increased the power consumed in fan operation before entering blower fan.Therefore be necessary that before air-flow enters blower fan, do some to air-flow corrects.
Although the situation of flow distortion usually appears in centrifugal blower, current research is in this respect also few.
Summary of the invention
The purpose of this utility model overcomes the deficiency in above-mentioned background technology, provides a kind of centrifugal ventilation fan leading device, and it is simple that this device should have structure, the feature that using effect is good.
The technical solution of the utility model is:
The leading device of a kind of centrifugal blower, comprise airscoop shroud, cylinder, first rectifier, second rectifier, first current plate and the second current plate, the small-bore one end of airscoop shroud is welded on one end of cylinder, flange plate is welded on bigbore one end of airscoop shroud, polylith first current plate is along the internal face of cylinder axis uniform welding at cylinder, the outer wall of the first rectifier is welded with every block first current plate, the elongation line that second current plate is arranged on the first current plate is welded on the internal face of the first rectifier, the outer wall of the second rectifier is welded with every block second current plate,
Described cylinder inner wall face diameter is a, and wall thickness is 0.01a, and cylinder heights is b;
The profile line in described airscoop shroud vertical direction cross section is the combination of circular arc and inclined line segment, is inclined line segment near the bigbore one end of airscoop shroud, is arc section near small-bore one end.The diameter of heavy caliber inwall is c, and the diameter of small-bore inwall is a, and airscoop shroud height is 0.13b, and radius of arc is 0.17c, line segment and circular arc tangent, airscoop shroud wall thickness is identical with wall thickness of cylinder;
Described first rectifier is thin walled cylinder, and inner diameter is 1/3a, and wall thickness is 1/3 times of wall thickness of cylinder, and be highly 0.87a, axis overlaps with cylinder axis, is 0.087b near one end of airscoop shroud and the distance on airscoop shroud top;
Described second rectifier is thin walled cylinder, and inner diameter is 0.2a, and wall thickness is 1/3 times of wall thickness of cylinder, and be highly 0.87a, axis overlaps with cylinder axis, is 0.087b near one end of airscoop shroud and the distance on airscoop shroud top;
Described first current plate is the rectangular flat that thickness is identical with rectifier thickness, and wide is 0.18a, and long identical with rectifier height, starting point and end are all identical with rectifier;
As preferably, the first described current plate is eight pieces;
Described second current plate is the rectangular flat that thickness is identical with rectifier thickness, and wide is 0.13a, and long identical with rectifier height, starting point and end are all identical with rectifier;
As preferably, the second described current plate is eight pieces.
The utility model beneficial effect is as follows:
The utility model utilizes CFD technology, by carrying out numerical simulation to the leading device installing this model utility and certain model centrifugal blower of not installing leading device.Find under the same conditions, the centrifugal blower installing this leading device can reduce impeller power and improve fan efficiency, the object of the fan performance that is improved.
accompanying drawing is described
Fig. 1 is the utility model graphics;
Fig. 2 is front view of the present utility model;
Fig. 3 is plan view of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in accompanying drawing 1, accompanying drawing 2 and accompanying drawing 3, the leading device of a kind of centrifugal ventilation fan, comprise flange plate 1, airscoop shroud 2, cylinder 3, first rectifier 4, second rectifier 5, first current plate 6 and the second current plate 7, airscoop shroud is welded on one end of cylinder, flange plate is welded on airscoop shroud edge, current plate is placed in cylinder interior, is welded on the internal face of cylinder.
Described cylinder inner wall face diameter is a, and wall thickness is 0.01a, and flexible height is b.
The profile line in described airscoop shroud vertical direction cross section is the combination of circular arc and inclined line segment, is inclined line segment near the bigbore one end of airscoop shroud, is arc section near small-bore one end.The diameter of heavy caliber inwall is c, and the diameter of small-bore inwall is a, and airscoop shroud height is 0.13b, and radius of arc is 0.17c, line segment and circular arc tangent, airscoop shroud wall thickness is identical with wall thickness of cylinder.
Described first rectifier is thin walled cylinder, and inner diameter is 2/3a, and wall thickness is 1/3 times of wall thickness of cylinder, and be highly 0.87a, axis overlaps with cylinder axis, is 0.087b near one end of airscoop shroud and the distance on airscoop shroud top.
Described second rectifier is thin walled cylinder, and inner diameter is 0.4a, and wall thickness is 1/3 times of wall thickness of cylinder, and all the other sizes are identical with the first rectifier.
Described first current plate is the rectangular flat that thickness is identical with rectifier thickness, and wide is 0.18a, and long identical with rectifier height, starting point and end are all identical with rectifier.Described second current plate is the rectangular flat that thickness is identical with rectifier thickness, and wide is 0.13a, and long identical with rectifier height, starting point and end are all identical with rectifier.
Leading device so that certain model centrifugal blower uses:
Cylinder inner wall face diameter is 150mm, and wall thickness is 3mm, is highly 460mm.
The profile line in airscoop shroud vertical direction cross section is the combination of circular arc and inclined line segment, and the diameter of heavy caliber inwall is 230mm, and the diameter of small-bore inwall is 150mm, airscoop shroud height is 60mm, radius of arc is 40mm, line segment and circular arc tangent, airscoop shroud wall thickness is 3mm.
First rectifier inner diameter is 200mm, wall thickness 1mm, and be highly 400mm, axis overlaps with cylinder axis, is 40mm near one end of airscoop shroud and the distance of the small-bore one end of air inlet.
Second rectifier inner diameter is 120mm, wall thickness 1mm, and be highly 400mm, all the other sizes are identical with the first rectifier.
First current plate is thickness is 1mm, and wide is 54mm, and long is 400mm, and starting point and end are all identical with rectifier.As preferably, the first described current plate is eight pieces.
Second current plate is thickness is 1mm, and wide is 39mm, and long is 400mm, and starting point and end are all identical with rectifier.As preferably, the first described current plate is eight pieces.
Find that the Centrifugal Fan Impeller power installing this leading device is reduced to 2.31kW by 2.47kW, and efficiency improves 1.4% under the same conditions.
Claims (3)
1. the leading device of centrifugal blower, comprise airscoop shroud, cylinder, first rectifier, second rectifier, first current plate and the second current plate, the small-bore one end of airscoop shroud is welded on one end of cylinder, flange plate is welded on bigbore one end of airscoop shroud, polylith first current plate is along the internal face of cylinder axis uniform welding at cylinder, the outer wall of the first rectifier is welded with every block first current plate, the elongation line that second current plate is arranged on the first current plate is welded on the internal face of the first rectifier, the outer wall of the second rectifier is welded with every block second current plate,
Described cylinder inner wall face diameter is a, and wall thickness is 0.01a, and cylinder heights is b;
The profile line in described airscoop shroud vertical direction cross section is the combination of circular arc and inclined line segment, is inclined line segment near the bigbore one end of airscoop shroud, is arc section near small-bore one end; The diameter of heavy caliber inwall is c, and the diameter of small-bore inwall is a, and airscoop shroud height is 0.13b, and radius of arc is 0.17c, line segment and circular arc tangent, airscoop shroud wall thickness is identical with wall thickness of cylinder;
Described first rectifier is thin walled cylinder, and inner diameter is 1/3a, and wall thickness is 1/3 times of wall thickness of cylinder, and be highly 0.87a, axis overlaps with cylinder axis, is 0.087b near one end of airscoop shroud and the distance on airscoop shroud top;
Described second rectifier is thin walled cylinder, and inner diameter is 0.2a, and wall thickness is 1/3 times of wall thickness of cylinder, and be highly 0.87a, axis overlaps with cylinder axis, is 0.087b near one end of airscoop shroud and the distance on airscoop shroud top;
Described first current plate is the rectangular flat that thickness is identical with rectifier thickness, and wide is 0.18a, and long identical with rectifier height, starting point and end are all identical with rectifier;
Described second current plate is the rectangular flat that thickness is identical with rectifier thickness, and wide is 0.13a, and long identical with rectifier height, starting point and end are all identical with rectifier.
2. the leading device of a kind of centrifugal blower according to claim 1, the first described current plate is eight pieces.
3. the leading device of a kind of centrifugal blower according to claim 1, the second described current plate is eight pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520057668.XU CN204476872U (en) | 2015-01-27 | 2015-01-27 | The leading device of a kind of centrifugal blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520057668.XU CN204476872U (en) | 2015-01-27 | 2015-01-27 | The leading device of a kind of centrifugal blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204476872U true CN204476872U (en) | 2015-07-15 |
Family
ID=53632664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520057668.XU Expired - Fee Related CN204476872U (en) | 2015-01-27 | 2015-01-27 | The leading device of a kind of centrifugal blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204476872U (en) |
-
2015
- 2015-01-27 CN CN201520057668.XU patent/CN204476872U/en not_active Expired - Fee Related
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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: 20150715 Termination date: 20160127 |
|
| EXPY | Termination of patent right or utility model |