CN102235383A - Forward centrifugal fan - Google Patents
Forward centrifugal fan Download PDFInfo
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- CN102235383A CN102235383A CN2010101555201A CN201010155520A CN102235383A CN 102235383 A CN102235383 A CN 102235383A CN 2010101555201 A CN2010101555201 A CN 2010101555201A CN 201010155520 A CN201010155520 A CN 201010155520A CN 102235383 A CN102235383 A CN 102235383A
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- centrifugal fan
- impeller
- forward direction
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Abstract
The invention relates to a forward centrifugal fan. The forward centrifugal fan comprises an impeller, a shell, a motor and a power supply connecting wire, wherein the impeller comprises a blade socket and a plurality of blades; the plurality of blades are uniformly distributed along the rotation direction of the impeller, and are arc-shaped blades; and the arc-shaped concave surface of each arc-shaped blade is a windward surface. The blades of the impeller are arc-shaped, the plurality of arc-shaped blades are uniformly distributed along the rotation direction of the impeller, the arc-shaped concave surface of each arc-shaped blade is the windward surface, and air flow sucked by an air inlet is quickly brought into a flow channel for pressurization when the impeller is rotated at a high speed, so that the resistance of air eddy current to the blades can be reduced, and the pressure of the introduced air is increased; accordingly, the kinetic energy of the air flow which flows out of an air outlet is enhanced, so that the air speed at the air outlet is increased; therefore, the forward centrifugal fan has high air outlet quantity and high working efficiency; in addition, the forward centrifugal fan has a small number of parts and a simple structure.
Description
Technical field
The present invention relates to a kind of blower fan, relate in particular to a kind of forward direction centrifugal fan.
Background technique
The forward direction centrifugal fan is widely used in fields such as household electric appliance, medical equipment, ventilation equipment, mine ventilation, fire-fighting smoke evacuation, and its structure mainly is made up of parts such as impeller, spiral case, suction port, runner, motors.Wherein impeller is made of blade, blade seat.The impeller of its blower fan by motor when the axle driven rotary, be full of gas between blade high speed rotating thereupon under the promotion of blade, make gas obtain big energy, under the effect of inertial centrifugal force, get rid of toward impeller outer edge, the pressure of gas and kinetic energy flow out from volute housing after increasing, the impeller middle part then forms negative pressure, sucks gas continually and replenished under the atmospheric pressure effect.The blade of this its impeller of centrifugal fan of prior art is generally straight plate shape or flight-shaped, but under the situation of impeller high speed rotating, this straight plate shape or flight-shaped blade are bigger to the eddy current frictional force that gas produced, the pressure of the gas that enters is diminished, thereby the kinetic energy of exhaust outlet effluent stream is weakened, the wind speed of exhaust outlet is diminished, thereby the efficient of the centrifugal fan of this structure is low.Because blade does work to gas, cause gas bigger in addition, can produce bigger noise in the friction of intake grill place and gas flow.Moreover, the structure more complicated of this centrifugal fan, and volume ratio is bigger, relatively heavier.
In addition, its shell of Chang Gui centrifugal fan generally comprises upper shell and lower shell body.When the assembly unit of upper shell and lower shell body, usually earlier on the upper and lower casing of centrifugal fan, bore positioning hole, adopt screw or screw and cooperating of nut that upper and lower casing is fixed together then, again fixedly on the upper and lower casing after the assembly unit according to client or technology requirement redrilling, in the hole of boring again, screw is installed then or screw was fixed with cooperating of nut.The method that upper and lower casing is fixed that cooperates of screw or screw and nut is installed in this employing in the hole, because screw or screw are higher with the cost of nut installation, thereby increased the manufacture cost of centrifugal fan.In addition, the installation rate that screw or screw cooperate with nut is slow, has reduced installation efficiency.
Summary of the invention
The forward direction centrifugal fan air output that the present invention is directed to prior art is little, efficient is low, and baroque deficiency, provides a kind of air output big, high working efficiency, and forward direction centrifugal fan simple in structure.
The technological scheme that the present invention solves the problems of the technologies described above is as follows: a kind of forward direction centrifugal fan comprises impeller, housing, motor and power supply wiring, described impeller comprises blade seat and a plurality of blade, described housing is provided with intake grill and exhaust outlet, and be provided with in the housing for the take offence runner of running body of impeller rotating band, described motor is arranged in the housing and with impeller and links to each other, described motor links to each other with power supply wiring, described motor comprises rotor and motor stator, described impeller is fixedlyed connected with rotor, and described motor stator is fixedlyed connected with housing; Described a plurality of blade evenly distributes along the direction of impeller rotation, and described a plurality of blades are circular-arc blade, and the arc-shaped concave of each circular-arc blade is the windward side.
The invention has the beneficial effects as follows: forward direction centrifugal fan of the present invention is because the blade of impeller is circular-arc, and described a plurality of circular-arc blade evenly distributes along the direction of impeller rotation, the arc-shaped concave of each circular-arc blade is the windward side, when the impeller high speed rotating, bring the air-flow that intake grill sucks into the runner supercharging fast, can reduce the resistance of air whirl to blade, make the pressure of the gas that enters become big, thereby the kinetic energy of exhaust outlet effluent stream is strengthened, make the wind speed of exhaust outlet become big, thereby this forward direction centrifugal fan air output is big, high working efficiency, these forward direction centrifugal fan component are few, simple in structure in addition.
On the basis of technique scheme, the present invention can also do following improvement.
Further, the width of described runner is to become big gradually along the direction of impeller rotation.
Further, described forward direction centrifugal fan also comprises the wind tongue, and described wind tongue is near the runner setting, and described wind tongue is to the outstanding arcuate structure that is provided with of runner.
Further, described housing comprises upper shell and lower shell body, and described upper shell and lower shell body are provided with many to corresponding mounting hole, is provided with a link in described every pair of corresponding mounting hole, the inwall interference fit of described link and mounting hole.
Further, the aperture of described every pair of mounting hole is identical.
Further, described link is the hollow cylindrical link.
Further, the outer wall of described link is provided with one along its axial breach, the equal in length of the length of described breach and link central shaft.
Further, the length of described link is less than or equal to housing and along link thickness on the direction is set.
Description of drawings
Fig. 1 is to be the structural representation of forward direction centrifugal fan of the present invention;
Fig. 2 is the right elevation of Fig. 1;
Fig. 3 is the internal structure schematic representation of forward direction centrifugal fan of the present invention;
Fig. 4 is the structural representation of forward direction centrifugal fan housing link of the present invention.
Embodiment
Below in conjunction with accompanying drawing principle of the present invention and feature are described, institute gives an actual example and only is used to explain the present invention, is not to be used to limit scope of the present invention.
Fig. 1 is to be the structural representation of forward direction centrifugal fan of the present invention, and Fig. 2 is the right elevation of Fig. 1, and Fig. 3 is the internal structure schematic representation of forward direction centrifugal fan of the present invention, and Fig. 4 is the structural representation of forward direction centrifugal fan housing link of the present invention.Shown in Fig. 1,2,3 and 4, described forward direction centrifugal fan comprises impeller, housing 1, motor and power supply wiring 4, described impeller comprises blade seat 2 and a plurality of blade 3, described housing 1 is provided with intake grill 7 and exhaust outlet 9, and be provided with in the housing 1 for the take offence runner 5 of running body of impeller rotating band, described motor is arranged in the housing 1 and with impeller and links to each other, described motor links to each other with power supply wiring 4, described motor comprises rotor and motor stator, described impeller is fixedlyed connected with rotor, and described motor stator is fixedlyed connected with housing 1; Described a plurality of blade 3 evenly distributes along the direction of impeller rotation, and described a plurality of blades 3 are circular-arc blade, and the arc-shaped concave of each circular-arc blade is windward side 8.
The width of described runner 5 is to become big gradually along the direction of impeller rotation.The width of described runner is along the ascending setting of direction of impeller rotation, when blade drive air-flow moved in runner, air-flow and runner inner wall friction supercharging amplitude were big, thereby the pressure of air-flow is strengthened like this, kinetic energy at the exhaust outlet effluent air is bigger, and flow velocity is faster.Described forward direction centrifugal fan also comprises wind tongue 6, and described wind tongue 6 is provided with near runner 5, and described wind tongue 6 is to the runner 5 outstanding arcuate structures that are provided with.The wind tongue of described arcuate structure can reduce the frictional force of air-flow to the outlet port, thereby the noise of this forward direction centrifugal fan is little.
Described housing 1 comprises upper shell 10 and lower shell body 11, described upper shell 10 and lower shell body 11 are provided with many to corresponding mounting hole 12, be provided with a link 13 in described every pair of corresponding mounting hole 12, the inwall interference fit of described link 13 and mounting hole 12.The aperture of described every pair of mounting hole 12 is identical.Described link 13 is the hollow cylindrical link.The outer wall of described link 13 is provided with one along its axial breach 14, the equal in length of the length of described breach 14 and link 13 central shafts.The length of described link 13 is less than or equal to housing 1 and along link 13 thickness on the direction is set.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. forward direction centrifugal fan, comprise impeller, housing (1), motor and power supply wiring (4), described impeller comprises blade seat (2) and a plurality of blade (3), described housing (1) is provided with intake grill (7) and exhaust outlet (9), and be provided with in the housing (1) for the take offence runner (5) of running body of impeller rotating band, described motor is arranged in the housing (1) and with impeller and links to each other, described motor links to each other with power supply wiring (4), described motor comprises rotor and motor stator, it is characterized in that: described impeller is fixedlyed connected with rotor, and described motor stator is fixedlyed connected with housing (1); Described a plurality of blade (3) evenly distributes along the direction of impeller rotation, and described a plurality of blades (3) are circular-arc blade, and the arc-shaped concave of each circular-arc blade is windward side (8).
2. forward direction centrifugal fan according to claim 1 is characterized in that: the width of described runner (5) is to become big gradually along the direction of impeller rotation.
3. forward direction centrifugal fan according to claim 1 is characterized in that: described forward direction centrifugal fan also comprises wind tongue (6), and described wind tongue (6) is provided with near runner (5), and described wind tongue (6) is to the outstanding arcuate structure that is provided with of runner (5).
4. forward direction centrifugal fan according to claim 1, it is characterized in that: described housing (1) comprises upper shell (10) and lower shell body (11), described upper shell (10) and lower shell body (11) are provided with many to corresponding mounting hole (12), be provided with a link (13) in described every pair of corresponding mounting hole (12), the inwall interference fit of described link (13) and mounting hole (12).
5. forward direction centrifugal fan according to claim 4 is characterized in that: the aperture of described every pair of mounting hole (12) is identical.
6. forward direction centrifugal fan according to claim 4 is characterized in that: described link (13) is the hollow cylindrical link.
7. forward direction centrifugal fan according to claim 6 is characterized in that: the outer wall of described link (13) is provided with one along its axial breach (14), the equal in length of the length of described breach (14) and link (13) central shaft.
8. forward direction centrifugal fan according to claim 4 is characterized in that: the length of described link (13) is less than or equal to housing (1) and along link (13) thickness on the direction is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101555201A CN102235383A (en) | 2010-04-26 | 2010-04-26 | Forward centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101555201A CN102235383A (en) | 2010-04-26 | 2010-04-26 | Forward centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102235383A true CN102235383A (en) | 2011-11-09 |
Family
ID=44886358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101555201A Pending CN102235383A (en) | 2010-04-26 | 2010-04-26 | Forward centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102235383A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102793524A (en) * | 2012-07-18 | 2012-11-28 | 宁波欧琳厨房电器有限公司 | Domestic dish warming machine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030118461A1 (en) * | 2000-01-26 | 2003-06-26 | Josef Hodapp | Radial turbo-blower |
| US7014422B2 (en) * | 2003-06-13 | 2006-03-21 | American Standard International Inc. | Rounded blower housing with increased airflow |
| CN101307778A (en) * | 2007-05-18 | 2008-11-19 | 乐金电子(天津)电器有限公司 | Centrifugal fan assembled guide vane vortex tongue structure |
| CN101387302A (en) * | 2008-08-18 | 2009-03-18 | 许晓华 | Centrifugal fan for garbage disposer |
| CN201269206Y (en) * | 2008-09-05 | 2009-07-08 | 西安陕鼓动力股份有限公司 | Integral totally-enclosed centrifugal blower fan units |
| CN201671879U (en) * | 2010-04-26 | 2010-12-15 | 宁波龙泰电讯电机有限公司 | Forward centrifugal fan |
-
2010
- 2010-04-26 CN CN2010101555201A patent/CN102235383A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030118461A1 (en) * | 2000-01-26 | 2003-06-26 | Josef Hodapp | Radial turbo-blower |
| US7014422B2 (en) * | 2003-06-13 | 2006-03-21 | American Standard International Inc. | Rounded blower housing with increased airflow |
| CN101307778A (en) * | 2007-05-18 | 2008-11-19 | 乐金电子(天津)电器有限公司 | Centrifugal fan assembled guide vane vortex tongue structure |
| CN101387302A (en) * | 2008-08-18 | 2009-03-18 | 许晓华 | Centrifugal fan for garbage disposer |
| CN201269206Y (en) * | 2008-09-05 | 2009-07-08 | 西安陕鼓动力股份有限公司 | Integral totally-enclosed centrifugal blower fan units |
| CN201671879U (en) * | 2010-04-26 | 2010-12-15 | 宁波龙泰电讯电机有限公司 | Forward centrifugal fan |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102793524A (en) * | 2012-07-18 | 2012-11-28 | 宁波欧琳厨房电器有限公司 | Domestic dish warming machine |
| CN102793524B (en) * | 2012-07-18 | 2015-04-08 | 宁波欧琳厨房电器有限公司 | Domestic dish warming machine |
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Application publication date: 20111109 |