CN102251985B - Box-type centrifugal fan - Google Patents
Box-type centrifugal fan Download PDFInfo
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- CN102251985B CN102251985B CN 201110221960 CN201110221960A CN102251985B CN 102251985 B CN102251985 B CN 102251985B CN 201110221960 CN201110221960 CN 201110221960 CN 201110221960 A CN201110221960 A CN 201110221960A CN 102251985 B CN102251985 B CN 102251985B
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- blade
- casing
- centrifugal fan
- box
- impeller
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Abstract
The invention relates to a box-type centrifugal fan which comprises a motor and an impellor which is connected to an output shaft of the motor; the impellor comprises a rear plate, a guide flow plate and a plurality of blades which are fixedly arranged between the rear plate and the guide flow plate; the blades are arc blades, and comprise rear parts which are close to the center of rotation of the impellor and front parts which are close to the wheel flange of the impellor; the blades extend from the rear parts to the front parts, and the radian of the arc blades increases gradually; the impellor is arranged in a box body which is provided with an air inlet and an air outlet; the air inlet is corresponding to the surface of the impellor; and the air outlet is close to the edge of the impellor. Because the arc blades are adopted for the centrifugal fan provided by the invention, the pressure and air inlet flow are increased, the impact to the blades by the air flow is reduced greatly, the air flow field is more uniform and smooth, thus the noise is reduced, and the air quantity is increased.
Description
Technical field
The present invention relates to a kind of centrifugal blower, specifically, relate to a kind of centrifugal fan with casing.
Background technique
The main still axial-flow blower of the blower fan that present domestic every profession and trade adopts, its shortcoming is that noise is large, air quantity is little, static pressure is low, can not adapt to Wind Volume, the application of high pressure, the blower fan overall structure can not meet client's requirement.
Summary of the invention
The purpose of this invention is to provide the box-type centrifugal fan that a kind of air quantity is large, noise is little, static pressure is high.
For achieving the above object, the technical solution used in the present invention is:
A kind of box-type centrifugal fan, comprise motor, be connected to the impeller on the output shaft of described motor, described impeller comprises rear plate, guide plate, is fixedly installed on the multi-disc blade between described rear plate and described guide plate, described blade is the arc shaped blade with arc outlet air surface, it comprises the front portion near the rear portion of the gyration center of described impeller, close described wheel rim, to described anterior the extension, the radian of described arc shaped blade increases described blade gradually by described rear portion;
Described impeller is arranged in casing, and described casing has intake grill, exhaust outlet, and described intake grill is corresponding with the wheel face of described impeller, and described exhaust outlet is near the wheel rim of described impeller.
Preferably, described guide plate is horn-like, and it comprises the first port and the second port, and the sectional area of described the first port is greater than the sectional area of described the second port, and described blade is fixedly connected on described the first port.
Preferably, described intake grill place is provided with slip ring, its by described casing outward in the described casing direction comprise successively outer end, middle-end, the inner, the sectional area of setting described outer end is that the sectional area of S1, described middle-end is S2, the sectional area of described the inner is S3, S1＞S3＞S2.
Preferably, described rear plate is surface plate.
Preferably, the wheel rim place of the close described impeller of a side that is connected with described guide plate of described blade has salient angle.
Preferably, the described casing side of being body, described side's body has first surface, and described intake grill is arranged on described first surface, and described exhaust outlet is arranged on perpendicular on any one or several in four faces of described first surface.
Preferably, described motor is arranged at the outside of described casing, and its output shaft stretches in described casing, and described casing is fixedly installed support outward, and described motor is arranged on described support.
Preferably, the radian increment rate at described rear portion is less than the radian increment rate of described front portion.
Preferably, described blade is welded and fixed mutually with described guide plate, described blade and described rear plate.
Because technique scheme is used, the present invention compared with prior art has following advantages: because the present invention adopts arc shaped blade, increased pressure and air inflow, and greatly reduced the impact of air-flow to blade, make airflow field more evenly smooth and easy, thereby reduced noise, increased air quantity.
Description of drawings
Accompanying drawing 1 is the side view of box-type centrifugal fan of the present invention.
Accompanying drawing 2 is the axonometric drawing of box-type centrifugal fan of the present invention.
Accompanying drawing 3 is the axonometric drawing of the impeller of box-type centrifugal fan of the present invention.
Accompanying drawing 4 is the axonometric drawing of the blade of box-type centrifugal fan of the present invention.
In above accompanying drawing: 1, motor; 2, casing; 3, impeller; 4, intake grill; 5, exhaust outlet; 6, support; 7, slip ring; 8, rear plate; 9, guide plate; 10, blade; 11, salient angle; 12, arc outlet air surface.
Embodiment
The invention will be further described below in conjunction with embodiment shown in the drawings.
Embodiment one: shown in accompanying drawing 1 and accompanying drawing 2.
A kind of casing 2 formula centrifugal blowers comprise motor 1, casing 2, are arranged in casing 2 and are connected to impeller 3 on the output shaft of motor 1.Casing 2 side's of being bodies, it has first surface, is provided with intake grill 4 on first surface, perpendicular to being provided with exhaust outlet 5 on any one or several in four faces of first surface.Motor 1 is arranged at the outside of casing 2, and its output shaft stretches in casing 2, and casing 2 is outer is fixedly installed support 6, and motor 1 is arranged on support 6.
Intake grill 4 places are provided with slip ring 7, and it comprises outer end, middle-end, the inner by casing 2 is outer successively to the interior direction of casing 2, and the sectional area of setting the outer end is that the sectional area of S1, middle-end is S2, and inner sectional area is S3, S1＞S3＞S2.
Referring to accompanying drawing 3 to shown in accompanying drawing 4.Impeller 3 comprises rear plate 8, guide plate 9, is fixedly installed on the multi-disc blade 10 between rear plate 8 and guide plate 9.Blade 10 is for having the arc shaped blade of arc outlet air surface 12, it comprises the front portion near the rear portion of the gyration center of impeller 3, close impeller 3 wheel rims, blade 10 is extended to the front portion by the rear portion, and the radian of arc shaped blade 10 increases gradually, and the radian increment rate at rear portion is less than the radian increment rate of front portion.
Rear plate 8 is surface plate, and blade 10 is welded and fixed mutually with it.It is horn-like that guide plate is, and it comprises the first port and the second port, and the sectional area of the first port is greater than the sectional area of the second port, and blade 10 is weldingly fixed on the first port, the linking that matches with slip ring 7 of the second port.The wheel rim place of the close impeller 3 of a side that is connected with guide plate 9 of blade 10 has salient angle 11, and this salient angle 11 has the wind cutting effect.
Intake grill 4 is corresponding with the wheel face of impeller 3, and exhaust outlet 5 is near the wheel rim of impeller 3.When air-flow enters casing 2 by intake grill 4, due to the guide functions that is subject to slip ring 7, air-flow can uniform-flow to the wheel face of impeller 3.
Compare with traditional centrifugal blower, the pressure coefficient of above-mentioned box-type centrifugal fan and flow coefficient are all larger, and whole centrifugal fan structure is compact, and stability has better reached the requirement that air quantity is large, pressure is high, noise is little, meets the customer equipment designing requirement.
Above-described embodiment only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow person skilled in the art scholar can understand content of the present invention and implement according to this, can not limit protection scope of the present invention with this.All equivalences that Spirit Essence is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.
Claims (6)
1. box-type centrifugal fan, comprise motor, be connected to the impeller on the output shaft of described motor, described impeller comprises rear plate, guide plate, is fixedly installed on the multi-disc blade between described rear plate and described guide plate, it is characterized in that: described blade is the arc shaped blade with arc outlet air surface, it comprises the front portion near the rear portion of the gyration center of described impeller, close described wheel rim, to described anterior the extension, the radian of described arc shaped blade increases described blade gradually by described rear portion; The radian increment rate at described rear portion is less than the radian increment rate of described front portion; The wheel rim place of the close described impeller of a side that is connected with described guide plate of described blade has salient angle;
Described impeller is arranged in casing, described casing has intake grill, exhaust outlet, described intake grill place is provided with slip ring, its by described casing outward in the described casing direction comprise successively outer end, middle-end, the inner, the sectional area of setting described outer end is that the sectional area of S1, described middle-end is S2, the sectional area of described the inner is S3, S1＞S3＞S2;
Described intake grill is corresponding with the wheel face of described impeller, and described exhaust outlet is near the wheel rim of described impeller.
2. box-type centrifugal fan according to claim 1, it is characterized in that: described guide plate is horn-like, it comprises the first port and the second port, the sectional area of described the first port is greater than the sectional area of described the second port, and described blade is fixedly connected on described the first port.
3. box-type centrifugal fan according to claim 1, it is characterized in that: described rear plate is surface plate.
4. box-type centrifugal fan according to claim 1, it is characterized in that: the described casing side of being body, described side's body has first surface, described intake grill is arranged on described first surface, and described exhaust outlet is arranged on perpendicular on any one or several in four faces of described first surface.
5. box-type centrifugal fan according to claim 1, it is characterized in that: described motor is arranged at the outside of described casing, its output shaft stretches in described casing, and described casing is fixedly installed support outward, and described motor is arranged on described support.
6. box-type centrifugal fan according to claim 1, it is characterized in that: described blade is welded and fixed mutually with described guide plate, described blade and described rear plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110221960 CN102251985B (en) | 2011-08-04 | 2011-08-04 | Box-type centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110221960 CN102251985B (en) | 2011-08-04 | 2011-08-04 | Box-type centrifugal fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102251985A CN102251985A (en) | 2011-11-23 |
| CN102251985B true CN102251985B (en) | 2013-05-08 |
Family
ID=44979478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110221960 Expired - Fee Related CN102251985B (en) | 2011-08-04 | 2011-08-04 | Box-type centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102251985B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673545A (en) * | 2016-03-30 | 2016-06-15 | 中国矿业大学 | Industrial fan impeller capable of changing air flow |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829534A (en) * | 2012-08-10 | 2012-12-19 | 上海瑞屋节能科技有限公司 | Air port static pressure device |
| US10230290B2 (en) * | 2014-09-08 | 2019-03-12 | Regal Beloit America, Inc. | Electrical machine and methods of assembling the same |
| CN104929977B (en) * | 2015-04-30 | 2018-03-13 | 广东美的制冷设备有限公司 | Centrifugal wind wheel |
| CN109737080A (en) * | 2019-02-19 | 2019-05-10 | 苏州众志新环冷却设备有限公司 | A kind of Air Exhaust Heat Dissipating Double-fuselage |
| CN110357326B (en) * | 2019-07-18 | 2022-03-01 | 华北水利水电大学 | High-efficient environmental protection water treatment system of drinking water disinfection dechlorination |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1873230A (en) * | 2005-06-02 | 2006-12-06 | 本田技研工业株式会社 | Multi-blade fan for air-cooled engine |
| CN2921388Y (en) * | 2006-06-05 | 2007-07-11 | 陈启洲 | Wing wheel structure improvement for rear tilting blower |
| CN201916252U (en) * | 2010-12-27 | 2011-08-03 | 广东肇庆德通有限公司 | Centrifugal fan with double air outlets |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2058942U (en) * | 1990-01-12 | 1990-07-04 | 中国科学院成都有机化学研究所 | Low-noise impeller for centrifuge fan |
| CN2303957Y (en) * | 1997-01-17 | 1999-01-13 | 东北电力科学研究院 | Collector-regulatable centrifugal fan |
| DE102004010457B3 (en) * | 2004-03-01 | 2005-07-14 | "Aura" Herbert D. Stolle Gmbh & Co | Propeller fan with shell propeller for blowing air has each blade in form of shell bowl extending longitudinally |
| CN202194860U (en) * | 2011-08-04 | 2012-04-18 | 张家港施亿百机电设备有限公司 | Box type centrifugal fan |
-
2011
- 2011-08-04 CN CN 201110221960 patent/CN102251985B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1873230A (en) * | 2005-06-02 | 2006-12-06 | 本田技研工业株式会社 | Multi-blade fan for air-cooled engine |
| CN2921388Y (en) * | 2006-06-05 | 2007-07-11 | 陈启洲 | Wing wheel structure improvement for rear tilting blower |
| CN201916252U (en) * | 2010-12-27 | 2011-08-03 | 广东肇庆德通有限公司 | Centrifugal fan with double air outlets |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673545A (en) * | 2016-03-30 | 2016-06-15 | 中国矿业大学 | Industrial fan impeller capable of changing air flow |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102251985A (en) | 2011-11-23 |
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| C14 | Grant of patent or utility model | ||
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Owner name: ZHANGJIAGANG ANRUIGE ELECTROMECHANICAL DEVICE CO., Free format text: FORMER OWNER: ZHANGJIAGANG SHIYIBAI ELECTROMECHANICAL EQUIPMENT CO., LTD. Effective date: 20140813 |
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Free format text: CORRECT: ADDRESS; FROM: 215627 SUZHOU, JIANGSU PROVINCE TO: 215617 SUZHOU, JIANGSU PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20140813 Address after: Suzhou City, Jiangsu province 215617 Zhangjiagang Yang Dongnae East Electric Avenue Patentee after: Zhangjiagang smart Mechanical & Electrical Equipment Co., Ltd. Address before: Suzhou City, Jiangsu province 215627 Zhangjiagang Dongrong town seven road Patentee before: Zhangjiagang Shiyibai Electromechanical Equipment Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20150804 |
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| EXPY | Termination of patent right or utility model |