CN201593516U - External-rotor centrifugal fan - Google Patents
External-rotor centrifugal fan Download PDFInfo
- Publication number
- CN201593516U CN201593516U CN2010200327684U CN201020032768U CN201593516U CN 201593516 U CN201593516 U CN 201593516U CN 2010200327684 U CN2010200327684 U CN 2010200327684U CN 201020032768 U CN201020032768 U CN 201020032768U CN 201593516 U CN201593516 U CN 201593516U
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- motor
- wind wheel
- external
- rotor
- external rotor
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- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 abstract description 7
- 238000009423 ventilation Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000428 dust Substances 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
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The utility model discloses an external-rotor centrifugal fan which comprises a housing, a motor and a wind wheel, wherein the motor is an external-rotor motor; and the external rotor of the motor is coaxially connected with the wind wheel. In the scheme, the motor for driving the wind wheel to rotate adopts the external-rotor motor which has the advantages of small volume and low noise, so that when the external-rotor motor is adopted to drive the fan to run, flowing wind can directly enters the inner part of the fan housing from the periphery of the motor, and wind passing through the motor can ventilate the motor and radiate heat from the motor, thereby achieving the aim of cooling the motor and effectively prolonging the service life of the fan.
Description
Technical field
The utility model relates to a kind of blower fan, particularly a kind of centrifugal blower.
Background technique
Centrifugal blower is the mechanical energy that relies on input, improves supply gas the side by side machinery of body of gas pressure, and it is a kind of driven fluid machinery.Centrifugal blower is widely used in ventilation, dust discharge and the cooling of factory, mine, tunnel, cooling tower, vehicle, boats and ships and building; The ventilation of boiler and industrial furnace and air inducing; Cooling in the apparatus of air conditioning and the domestic electric appliance and ventilation; The oven dry of cereal and selecting and recommending; Occasions such as the inflation of wind-tunnel wind regime and Hovercraft and propelling play important effect in the research and production field.Centrifugal blower mainly comprise wind wheel, motor, casing, etc. parts, motor is connected with wind wheel, drives wind wheel and rotates.Centrifugal blower is the principle that is converted to potential energy according to kinetic energy, utilizes the impeller of high speed rotating that gas is quickened, and slows down, changes the flow direction then, makes kinetic energy convert potential energy (pressure) to.In the one-stage centrifugal blower fan, gas is from axially entering wind wheel, and gas stream changes over radially when wind wheel, realizes the transformation of wind direction and the transformation of pressure.
As shown in Figure 1, motor 12 generally is inner rotor motor and is positioned at the outside of wind wheel 11, motor 12 and 11 coaxial connections of wind wheel in the existing centrifugal blower.Often volume is bigger to adopt the centrifugal blower of this structure, often is difficult to install in some relative narrow spaces.Have long-time use of motor of this centrifugal blower to tend to produce higher temperature again, influence the working life of motor, being necessary for motor sometimes increases a cooling fan 13, has increased cost of production.The centrifugal blower of this mechanism also can produce bigger noise when work, environment is on every side impacted.
The model utility content
At above-mentioned the deficiencies in the prior art, the technical problems to be solved in the utility model provides that a kind of noise is little, volume is little, the centrifugal blower of good heat dissipation.
For solving the problems of the technologies described above, the utility model adopts following technological scheme:
A kind of external rotor type centrifugal blower comprises motor, wind wheel, and described motor is an external rotor electric machine, and the external rotor of described motor is connected with described wind wheel is coaxial.
Preferably, the central authorities of described wind wheel are provided with a cavity, and described motor places in the described cavity.
Preferably, described wind wheel is an aluminum alloy material.
Technique scheme has following beneficial effect: in this scheme, drive the motor employing external rotor electric machine that wind wheel rotates, it is little that external rotor electric machine has a volume, the advantage that noise is low, when adopting the outer rotor motor driven fan operation, mobile wind can directly enter Blower Housing inside around motor, and wind can dispel the heat to motor ventilation through motor, thereby reach purpose, effectively prolong blower fan working life motor cooling.
Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of specification, below with preferred embodiment of the present utility model and conjunction with figs. describe in detail as after.Embodiment of the present utility model is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
The structural representation that Fig. 1 is connected with wind wheel for existing centrifugal blower motor.
Fig. 2 is the structural representation that motor is connected with wind wheel among the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail.
As shown in Figure 2, this external rotor type centrifugal blower comprises wind wheel 21 and motor 22, the central authorities of wind wheel 21 are provided with a cavity, motor 22 is an external rotor electric machine, the external rotor 23 of motor 22 place in the cavity of wind wheel 21 with and be connected with wind wheel 21, because the volume of external rotor electric machine own is less, therefore motor 22 can place in the middle of the wind wheel 23, so just make that the volume volume of centrifugal blower is less, be easy to install, and when adopting the outer rotor motor driven fan operation, the wind that flows can directly enter in the Blower Housing around motor, wind can dispel the heat to motor ventilation through motor, thereby reaches the purpose to the motor cooling, effectively prolongs blower fan working life.Wind wheel 21 adopts aluminum alloy material, has good thermal conductivity, so this wind wheel 21 also can play the function of auxiliary heat conduction.
More than a kind of external rotor type centrifugal blower that the utility model embodiment is provided be described in detail; for one of ordinary skill in the art; thought according to the utility model embodiment; part in specific embodiments and applications all can change; in sum; this description should not be construed as restriction of the present utility model, and all any changes of being made according to the utility model design philosophy are all within protection domain of the present utility model.
Claims (3)
1. an external rotor type centrifugal blower comprises motor, wind wheel, it is characterized in that: described motor is an external rotor electric machine, and the external rotor of described motor is connected with described wind wheel is coaxial.
2. external rotor type centrifugal blower according to claim 1 is characterized in that: the central authorities of described wind wheel are provided with a cavity, and the external rotor of described motor places in the described cavity.
3. external rotor type centrifugal blower according to claim 1 is characterized in that: described wind wheel is an aluminum alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200327684U CN201593516U (en) | 2010-01-06 | 2010-01-06 | External-rotor centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200327684U CN201593516U (en) | 2010-01-06 | 2010-01-06 | External-rotor centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201593516U true CN201593516U (en) | 2010-09-29 |
Family
ID=42775582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200327684U Expired - Fee Related CN201593516U (en) | 2010-01-06 | 2010-01-06 | External-rotor centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201593516U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481899A (en) * | 2014-12-05 | 2015-04-01 | 浙江理工大学 | Outer-rotor centrifugal fan adopting electromagnet bearing |
| CN116447170A (en) * | 2023-05-23 | 2023-07-18 | 北京襄立华科技有限公司 | Small-size centrifugal fan of high efficiency, high wind pressure |
-
2010
- 2010-01-06 CN CN2010200327684U patent/CN201593516U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481899A (en) * | 2014-12-05 | 2015-04-01 | 浙江理工大学 | Outer-rotor centrifugal fan adopting electromagnet bearing |
| CN116447170A (en) * | 2023-05-23 | 2023-07-18 | 北京襄立华科技有限公司 | Small-size centrifugal fan of high efficiency, high wind pressure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100929 Termination date: 20110106 |