CN111173764A - Double-air-inlet centrifugal fan - Google Patents
Double-air-inlet centrifugal fan Download PDFInfo
- Publication number
- CN111173764A CN111173764A CN202010170741.XA CN202010170741A CN111173764A CN 111173764 A CN111173764 A CN 111173764A CN 202010170741 A CN202010170741 A CN 202010170741A CN 111173764 A CN111173764 A CN 111173764A
- Authority
- CN
- China
- Prior art keywords
- motor
- centrifugal fan
- air
- flange
- impeller
- 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
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Classifications
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- 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
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- 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
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- 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
- F04D29/424—Double entry casings
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- 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
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
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- 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a double-air-inlet centrifugal fan which comprises a volute, a motor and an impeller, wherein circular air inlets are symmetrically formed in two side surfaces of the volute, the motor is installed on the volute, and the impeller is installed on a rotating shaft of the motor. The service life is long, the reliability is good, and the motor is directly driven.
Description
Technical Field
The invention relates to the field of wind power generation, in particular to a double-air-inlet centrifugal fan with air inlet at two sides for a wind driven generator.
Background
With the rapid development of technical strength in the wind power industry, the double-fed asynchronous wind driven generator is more and more mature in technology and higher in application popularity rate, meanwhile, the engine room is more and more compact in design, and an air-air cooler of the generator is used as a cooling mode of a traditional generator and is cooled by an outer rotor fan generally. The outer rotor fan is high in manufacturing cost and high in damage rate, and the power loss of a mode of driving the fan shaft by a belt is large and the mechanical abrasion is serious.
Disclosure of Invention
In order to solve the problems of high manufacturing cost and high damage rate of the wind driven generator, the invention develops the double-air inlet centrifugal fan which has long service life and good reliability and is directly driven by the motor,
in order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
the utility model provides a two air inlet centrifugal fan, includes spiral case, motor and impeller, the symmetry is equipped with circular air intake on the both sides face of spiral case, the motor is installed in the spiral case, installs the impeller in the motor shaft, install the motor support on the ventilation hole of spiral case one side, fixed mounting has flange on the casing of motor, and the motor passes through flange and installs in the motor support.
Further, the connecting flange is mounted in the middle of the motor shell.
Furthermore, the motor passes through the vent hole on one side of the volute, and the rotating shaft of the motor is coaxial with the two vent holes.
Furthermore, the flange is sleeved on the shell of the motor, and the flange and the shell of the motor are fixedly connected through a circle of angle iron.
And furthermore, the impellers are two groups of back-to-back impellers, and the tangential direction of each impeller is the same as the rotation direction of the motor.
After the technical scheme is adopted, the invention has the beneficial effects that:
1. the air volume is large: the centrifugal fan adopts two groups of back-to-back impellers, air enters from two sides, the air suction area is large, and the air quantity is increased.
2. The noise is low: the impeller blade adopts forward mounting means, and the blade tangent line is facing the direction of rotation of motor promptly, and this kind of structure lets the noise of fan operation very reduce.
3. The operation and maintenance cost is low: the mode of motor direct mount has reduced the spare part quantity of fan, has reduced the requirement to rotating member dynamic balance, has reduced the operation maintenance cost.
This technical scheme can effectively improve the life and the reliability of fan.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a right side view of the present invention;
fig. 3 is a schematic structural view of the motor.
In the figure: the device comprises a shell 1, a protective net 2, an impeller 3, an air inlet 4, a motor support 5, a motor 6, a flange 7 and a connecting piece 8.
Detailed Description
The following detailed description of embodiments of the invention is provided in conjunction with the accompanying drawings:
as shown in the figure, the double-air-inlet centrifugal fan comprises a volute-shaped shell 1, wherein an air outlet is formed in the top of the shell 1, and can be a circular tubular air outlet or a square tubular air outlet. The flange is arranged at the air outlet, so that the wind power generation motor can be conveniently connected. Circular air inlets 4 are symmetrically formed in planes on two sides of the shell 1, and a protective net 2 is mounted on the air inlets to prevent large sundries from entering the interior of the fan. A motor support 5 is installed on the outer side of the air inlet 4 on one side, a flange 7 is sleeved in the middle of the motor 6, and the flange 7 is fixed on the motor through a plurality of L-shaped connecting pieces 8 and can be fixed in a welding or threaded connection mode. And 7, connecting and fixing the motor bracket 5. Generally, a plurality of bolts are adopted for fixing, so that the disassembly is convenient. The motor 6 is positioned in the center of the air inlet 4, and the motor 6 can be cooled during air inlet. A pair of impellers 3 are installed on a rotating shaft of the motor 6, the impellers 3 are installed back to back, and the impellers 3 are installed in the forward direction, namely the tangential direction of blades of the impellers 3 is consistent with the rotating direction of the motor, so that the noise can be reduced. Because the motor 6 directly drives the impeller 3, transmission structures such as an outer rotor, a belt, a coupling and the like are not needed, and the reliability is improved. Air is sucked from the axial direction by the impeller 3 rotating at high speed through the air inlet 4, kinetic energy is converted into potential energy, higher pressure is generated, and meanwhile, air flow is discharged from the axial direction to the radial direction.
Claims (5)
1. The utility model provides a two air inlet centrifugal fan, includes spiral case, motor and impeller, the symmetry is equipped with circular air intake on the both sides face of spiral case, the motor is installed in the spiral case, installs the impeller in the motor shaft, its characterized in that, install the motor support on the ventilation hole of spiral case one side, fixed mounting has flange on the casing of motor, and the motor passes through flange and installs in the motor support.
2. A centrifugal fan as claimed in claim 1, wherein the connecting flange is mounted to a middle portion of the motor housing.
3. The centrifugal fan as claimed in claim 1, wherein the motor passes through a vent hole on one side of the volute, and a rotation shaft of the motor is coaxial with the two vent holes.
4. The centrifugal fan as claimed in claim 1, wherein the flange is sleeved on the motor housing, and the flange and the motor housing are connected and fixed by a ring of angle iron.
5. A centrifugal fan with double inlet air as claimed in claim 1, wherein the impellers are two groups of back-to-back impellers, and the tangential direction of each impeller is the same as the rotation direction of the motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010170741.XA CN111173764A (en) | 2020-03-12 | 2020-03-12 | Double-air-inlet centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010170741.XA CN111173764A (en) | 2020-03-12 | 2020-03-12 | Double-air-inlet centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111173764A true CN111173764A (en) | 2020-05-19 |
Family
ID=70653466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010170741.XA Pending CN111173764A (en) | 2020-03-12 | 2020-03-12 | Double-air-inlet centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111173764A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201526472U (en) * | 2009-09-25 | 2010-07-14 | 浙江苏泊尔家电制造有限公司 | Centrifugal fan with air inlet at both surfaces |
| CN201953682U (en) * | 2011-01-14 | 2011-08-31 | 佛山市顺德区泛仕达机电有限公司 | Backward centrifugal fan |
| CN203548268U (en) * | 2013-10-29 | 2014-04-16 | 温岭市大洋电器厂 | Two-way air inlet centrifugal fan |
| CN103742453A (en) * | 2013-12-30 | 2014-04-23 | 宁波方太厨具有限公司 | Range hood centrifugal fan with double air inlet structure |
| CN104196761A (en) * | 2014-08-22 | 2014-12-10 | 广东海信家电有限公司 | Double-air-inlet centrifugal fan |
| CN105240291A (en) * | 2014-07-11 | 2016-01-13 | 洛森通风设备(上海)有限公司 | Unilateral fixed bidirectional air inlet centrifugal fan |
| CN206495825U (en) * | 2017-01-20 | 2017-09-15 | 杭州艾弗洛电器有限公司 | A kind of vibration-proof structure of the double air intake centrifugal blower fans of outer rotor FC |
| CN207554375U (en) * | 2017-08-16 | 2018-06-29 | 株洲联诚集团有限责任公司 | A kind of double air intake centrifugal fans of locomotive air conditioner system |
| CN110118187A (en) * | 2019-05-21 | 2019-08-13 | 佛山市顺德区美的洗涤电器制造有限公司 | Blower and kitchen ventilator with the blower |
-
2020
- 2020-03-12 CN CN202010170741.XA patent/CN111173764A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201526472U (en) * | 2009-09-25 | 2010-07-14 | 浙江苏泊尔家电制造有限公司 | Centrifugal fan with air inlet at both surfaces |
| CN201953682U (en) * | 2011-01-14 | 2011-08-31 | 佛山市顺德区泛仕达机电有限公司 | Backward centrifugal fan |
| CN203548268U (en) * | 2013-10-29 | 2014-04-16 | 温岭市大洋电器厂 | Two-way air inlet centrifugal fan |
| CN103742453A (en) * | 2013-12-30 | 2014-04-23 | 宁波方太厨具有限公司 | Range hood centrifugal fan with double air inlet structure |
| CN105240291A (en) * | 2014-07-11 | 2016-01-13 | 洛森通风设备(上海)有限公司 | Unilateral fixed bidirectional air inlet centrifugal fan |
| CN104196761A (en) * | 2014-08-22 | 2014-12-10 | 广东海信家电有限公司 | Double-air-inlet centrifugal fan |
| CN206495825U (en) * | 2017-01-20 | 2017-09-15 | 杭州艾弗洛电器有限公司 | A kind of vibration-proof structure of the double air intake centrifugal blower fans of outer rotor FC |
| CN207554375U (en) * | 2017-08-16 | 2018-06-29 | 株洲联诚集团有限责任公司 | A kind of double air intake centrifugal fans of locomotive air conditioner system |
| CN110118187A (en) * | 2019-05-21 | 2019-08-13 | 佛山市顺德区美的洗涤电器制造有限公司 | Blower and kitchen ventilator with the blower |
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| 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: 20200519 |
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| WD01 | Invention patent application deemed withdrawn after publication |