CN201386671Y - Axial flow type induction fan - Google Patents
Axial flow type induction fan Download PDFInfo
- Publication number
- CN201386671Y CN201386671Y CN200920117229U CN200920117229U CN201386671Y CN 201386671 Y CN201386671 Y CN 201386671Y CN 200920117229 U CN200920117229 U CN 200920117229U CN 200920117229 U CN200920117229 U CN 200920117229U CN 201386671 Y CN201386671 Y CN 201386671Y
- Authority
- CN
- China
- Prior art keywords
- exhaust outlet
- air duct
- motor
- induced fan
- dryer
- 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.)
- Expired - Lifetime
Links
- 230000006698 induction Effects 0.000 title 1
- 230000030279 gene silencing Effects 0.000 claims description 7
- 230000000452 restraining effect Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract description 3
- 230000002093 peripheral effect Effects 0.000 abstract 2
- 210000001503 joint Anatomy 0.000 abstract 1
- 230000003584 silencer Effects 0.000 abstract 1
- 238000009423 ventilation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses an induced fan of axial-flow type, including dryer, impeller, motor and support, the dryer is equipped with air intake and air outlet, impeller coaxial arrangement is on the motor, the motor passes through the leg joint in the dryer, the axis of motor is coaxial with the axis of dryer, the dryer is the conical barrel who is the convergence form from the air intake to the air outlet, the impeller is arranged in and is close to fan air intake one side, be equipped with the silencer on the outer peripheral face of dryer, the utility model discloses an induced fan of axial-flow type still is equipped with the air outlet flange, the air outlet flange is arranged in on the dryer outer peripheral face of air outlet one side, the axial distance of air outlet flange and air outlet is greater than 20 millimeters, adopts the utility model discloses an induced fan of axial-flow type has that the amount of wind is great, and the noise is lower, installation.
Description
Technical field
The utility model relates to a kind of ventilation equipment, particularly relates to a kind of axial flow Induced fan that is applicable to large-scale garage ventilation usefulness, belongs to the fluid machinery technical field.
Background technique
Traditional large-scale garage ventilates to adopting usually and arrange low speed airduct air supplying and exhausting system in the storehouse, its maximum shortcoming is: the airduct cross-section size is bigger, air tends to accumulate in the place, dead angle away from air draught, in addition, the garage floor height is generally lower, make actual use highly lower after adopting low speed airduct air supplying and exhausting system, limited entering of a part of vehicle, perhaps for actual use is highly increased, when civil engineering, strengthen floor height, construction cost is increased greatly, also have the investment of low speed airduct air supplying and exhausting system bigger, complexity is installed, and user cost is higher.Technology as an alternative, modern large-scale garage has progressively adopted Induced fan, arranges the Induced fan array with optimal design on the garage ceiling board, with the inducing properties of a small amount of high velocity jet air-flow of Induced fan ejection, drive still air on every side, reach the purpose of air flows.
The Induced fan that adopts adopts centrifugal substantially at present, the centrifugal high pressure fan of in a casing, packing into, be provided with one then at the exhaust outlet place of centrifugal blower to several jetburners, centrifugal Induced fan mainly has the following disadvantages: one, air quantity is less, characteristics decision because of centrifugal blower, it is the lower blower fan of a kind of efficient, and under same consumed power, the air quantity of centrifugal blower is little more many than axial-flow blower; Two, noise is bigger, also is because the characteristics of centrifugal blower determine, it must improve the rotating speed of blower fan in order to reach predetermined airflow, and when rotation speed of fan improved, the noise of blower fan had also increased; Three, cost is higher, because the centrifugal blower price of same performance parameter is bigger than axial-flow blower, makes the cost of whole ventilation system than higher, in addition, because the efficient of centrifugal blower is lower, also many at the electric energy that using process consumes, make user cost also than higher.
Summary of the invention
For overcoming above-mentioned shortcoming, the utility model aims to provide a kind of simple in structure, and noise is lower, the axial flow Induced fan that cost is less.
For addressing the above problem, the utility model is by the following technical solutions: a kind of axial flow Induced fan, comprise air duct, impeller, motor and support, described air duct is provided with intake grill and exhaust outlet, described impeller is coaxial to be installed on the motor, described motor is connected in the air duct by support, and the axis of described motor and the axis coaxle of air duct, described air duct are to be the divergent-cone wall of restraining shape from the intake grill to the exhaust outlet.
Described impeller places near air inlet one side.The outer circumferential face of described air duct is provided with silencing apparatus.
It also is provided with the exhaust outlet flange, and described exhaust outlet flange places on the air duct outer circumferential face of exhaust outlet one side, and the axial distance of described exhaust outlet flange and exhaust outlet is greater than 20 millimeters.
Adopt axial flow Induced fan of the present utility model, have the advantages that air quantity is big, noise is lower, install, user cost is lower.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1-air duct, 2-impeller, 3-motor, 4-support, 5-intake grill, 6-exhaust outlet, 7-silencing apparatus, 8-exhaust outlet flange.
Embodiment
As shown in Figure 1, the utility model discloses a kind of axial flow Induced fan, comprise air duct 1, impeller 2, motor 3 and support 4, described air duct 1 is provided with intake grill 5 and exhaust outlet 6, described impeller 2 coaxial being installed on the motor 3, described motor 3 is connected in the air duct 1 by support 4, and the axis coaxle of the axis of described motor 3 and air duct 1, described air duct 1 are 6 to be the divergent-cone wall of restraining shape from intake grill 5 to exhaust outlet.
Described impeller 2 places near air inlet 5 one sides.The outer circumferential face of described air duct 1 is provided with silencing apparatus 7.
Axial flow Induced fan of the present utility model also is provided with exhaust outlet flange 8, and described exhaust outlet flange 8 places on air duct 1 outer circumferential face of exhaust outlet 6 one sides, and the axial distance of described exhaust outlet flange 8 and exhaust outlet 6 is greater than 20 millimeters.
Adopt axial flow Induced fan of the present utility model, have following characteristics:
One, simple in structure: with respect to centrifugal Induced fan, it is much simple that the structure of axial-flow blower is wanted, mean also the time simple in structure that manufacture cost ratio centrifugal induced air is confidential low, for reaching the blast identical with centrifugal Induced fan, air duct 1 of the present utility model adopts from intake grill 5 to exhaust outlet 6 to be the divergent-cone wall of restraining shape.Because under the drive of impeller 2, air sucks from intake grill 5, pressurizeed gradually in the conical air duct, during to exhaust outlet 6, wind speed is compared many greatly with blast with the axial fan of straight tube, tapering according to the conical air duct of optimal design, make it to reach the performance parameter of Induced fan, in addition, for reaching under the prerequisite of same performance parameter, volume of the present utility model is minimized, can place impeller near air inlet 5 one sides, because intake grill 5 is located at the big end of conical air duct, the air duct of same volume size, the impeller of larger diameter can be set, make the maximization of air quantity and blast.
Two, noise is lower: with respect to traditional centrifugal Induced fan, after adopting the utility model, because at same air quantity, blast, performance parameters such as wind speed require down, can adopt lower rotating speed, more low power motor, make of the noise big reduction of whole Induced fan in when operation, for reaching lower noise, the utility model can also be provided with silencing apparatus 7 on the outer circumferential face of air duct, silencing apparatus 7 can adopt cylindric with air duct 1 same tapering, and the inwall of silencing apparatus 7 is fixed on the outer wall of air duct 1, is the convenience of installing, the outer wall of silencing apparatus 7 can also be made other shape, as square body, cuboid etc.
Three, installation, user cost are lower: because after adopting axial flow Induced fan of the present utility model, than centrifugal Induced fan, used material will be saved, machining complexity will reduce, the power of motor that adopts is littler etc., so the axial flow Induced fan is lower on purchasing price than traditional centrifugal Induced fan, make that the installation cost in garage of certain area is lower; Because the power of motor that the axial flow Induced fan adopts is littler, user cost in actual use is also lower, and in addition, the axial flow Induced fan is because structure ratio centrifugal Induced fan is simple, safeguards, maintenance is also more convenient, and maintenance cost is also lower.
Induced fan is to promote air by end thrust to flow to substantially horizontal in use, reach the purpose of exchange of air, but can there be a ring vortex district in blower fan behind exhaust outlet flange 8 when operation, this vortex is a negative pressuren zone, make blower fan bear one with the opposite power of blower fan end thrust direction, cause the blower fan end thrust to descend, this eddy current is not a steady state value usually in addition, also can influence the Security of using in actual use because of blower fan because of the vibration that the variation of stressed effect produces blower fan.For addressing the above problem, the utility model has also adopted exhaust outlet flange 8 has been placed on air duct 1 outer circumferential face of exhaust outlet 6 one sides, the axial distance of exhaust outlet flange 8 and exhaust outlet 6 is greater than 20 millimeters technological scheme, adopted this technological scheme, because there is axial distance in the exhaust outlet flange 8 on the air duct 1 with exhaust outlet 6, the condition that originally easily formed a ring vortex district in exhaust outlet flange 8 backs does not exist, so blower fan just can not produce eddy current in running, the end thrust index of blower fan just can not descend, and the running of blower fan is more steady.
Claims (4)
1. axial flow Induced fan, comprise air duct (1), impeller (2), motor (3) and support (4), described air duct (1) is provided with intake grill (5) and exhaust outlet (6), described impeller (2) is coaxial to be installed on the motor (3), described motor (3) is connected in the air duct (1) by support (4), the axis coaxle of the axis of described motor (3) and air duct (1) is characterized in that described air duct (1) is to be the divergent-cone wall of restraining shape from intake grill (5) to exhaust outlet (6).
2. a kind of axial flow Induced fan according to claim 1 is characterized in that described impeller (2) places near air inlet (5) one sides.
3. a kind of axial flow Induced fan according to claim 1 is characterized in that the outer circumferential face of described air duct (1) is provided with silencing apparatus (7).
4. a kind of axial flow Induced fan according to claim 1, it is characterized in that it also is provided with exhaust outlet flange (8), described exhaust outlet flange (8) places on air duct (1) outer circumferential face of exhaust outlet (6) one sides, and the axial distance of described exhaust outlet flange (8) and exhaust outlet (6) is greater than 20 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920117229U CN201386671Y (en) | 2009-04-03 | 2009-04-03 | Axial flow type induction fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920117229U CN201386671Y (en) | 2009-04-03 | 2009-04-03 | Axial flow type induction fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201386671Y true CN201386671Y (en) | 2010-01-20 |
Family
ID=41579205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920117229U Expired - Lifetime CN201386671Y (en) | 2009-04-03 | 2009-04-03 | Axial flow type induction fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201386671Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089701A (en) * | 2011-10-27 | 2013-05-08 | 南通大通宝富风机有限公司 | Air inlet used for 600MW circulating fluidized bed fan |
| CN106050744A (en) * | 2016-07-27 | 2016-10-26 | 珠海格力电器股份有限公司 | Air guide shell and fan |
| CN111456948A (en) * | 2020-04-28 | 2020-07-28 | 张建辉 | Drum-type conical air pump and drum impeller machining method |
| CN113520216A (en) * | 2021-05-31 | 2021-10-22 | 黎巍 | Direct-suction type dust collector |
-
2009
- 2009-04-03 CN CN200920117229U patent/CN201386671Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089701A (en) * | 2011-10-27 | 2013-05-08 | 南通大通宝富风机有限公司 | Air inlet used for 600MW circulating fluidized bed fan |
| CN103089701B (en) * | 2011-10-27 | 2016-06-29 | 南通大通宝富风机有限公司 | Air inlet for 600MW fan for circulating fluidized bed |
| CN106050744A (en) * | 2016-07-27 | 2016-10-26 | 珠海格力电器股份有限公司 | Air guide shell and fan |
| CN111456948A (en) * | 2020-04-28 | 2020-07-28 | 张建辉 | Drum-type conical air pump and drum impeller machining method |
| CN113520216A (en) * | 2021-05-31 | 2021-10-22 | 黎巍 | Direct-suction type dust collector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100120 |