CN205578305U - Pressure fan in large -traffic - Google Patents
Pressure fan in large -traffic Download PDFInfo
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- CN205578305U CN205578305U CN201620207342.5U CN201620207342U CN205578305U CN 205578305 U CN205578305 U CN 205578305U CN 201620207342 U CN201620207342 U CN 201620207342U CN 205578305 U CN205578305 U CN 205578305U
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- impeller
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- motor
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Abstract
The utility model relates to a ventilation equipment field especially relates to a fan. Pressure fan in large -traffic, including a fan main part, its characterized in that, the fan main part includes a motor, and the motor lies in the rear of impeller through a pivot and a impeller connection, motor, and the impeller is equipped with a cover body outward, and the impeller includes 12 at least blades, 12 at least blades are the blade of retroflection, the thickness of the central authorities of blade is greater than the thickness at blade edge, and the thickness from interior to exterior of blade steadilys decrease in proper order, and the thickness at blade edge is not more than 2cm. The utility model discloses an adopt ten two slice at least blades can have lower rotational speed under can reaching the condition of same amount of wind wind pressure for whole fan noise descends for fan noise of the same type. The utility model discloses a structure of having optimized the blade can not have the overload phenomenon in the operation engineering, improve the flow of fan.
Description
Technical field
This utility model relates to field of ventilation equipment, particularly relates to a kind of blower fan.
Background technology
Nowadays blower fan is in order to advocate environmental protection, reduces PM2.5 and often adds dust arrester, but has and remove
The air quantity of the blower fan of dirt device is constant, but pressure needs to be greatly promoted；And during because this blower fan is long
Between use, so efficiency and noise are the factor needing to consider designing trendy blower fan when simultaneously.
Utility model content
The purpose of this utility model is, it is provided that pressure fan in a kind of big flow, solves above at least one
Individual technical problem.
This utility model is solved the technical problem that to realize by the following technical solutions:
Pressure fan in big flow, including a fan main body, it is characterised in that described fan main body includes
One motor, described motor is connected with an impeller by a rotating shaft, and described motor is positioned at the rear of described impeller,
Described impeller outer is provided with a cover body, and described impeller includes at least ten two blades, described at least ten two leaves
Sheet is recurvate blade；
The thickness of the central authorities of described blade is more than the thickness of described blade edge, and the thickness of described blade is by interior
To successively decreasing successively outward, the thickness of described blade edge is not more than 2cm.
This utility model can in the case of can reaching same airflow pressure by least ten two blades of employing
There to be relatively low rotating speed so that overall fan noise declines relative to same type fan noise.This practicality is new
Type can not have overload phenomenon by the structure optimizing blade in operating engineering, improves the stream of blower fan
Amount.This utility model by with motor direct-connected, lose without any driving member so that motor produce merit
Rate is all transferred to impeller, free of losses, reduces loss.Blower fan structure design is also novel unique, uses
Bending support, both can reduce sheet metal thickness, increased support strength by bending, kept stability,
Workman can be increased again according to using hands working place, significantly facilitate installation.
Angle between adjacent two blades is not more than 30 °.This utility model limits the position of blade,
The angle of giving vent to anger of blade is not more than 30 ° so that when air-flow leaves impeller, the tangential direction at blade radian drops
Low turbulent flow.
The front of described impeller is provided with a shroud, and described shroud is positioned at described cover body, and described shroud sets
Having an air inlet, described air inlet to be provided with an air intake cone, described air intake cone is after a front bore is more than
The ring body in square opening footpath.
This utility model limits the structure of air inlet, it is possible to when making air-flow enter blade, smooth-going is without turbulent flow
Produce, thus improve fan efficiency, reduce the noise of air inlet.
Described cover body is worm frame, described worm frame be arranged over a gas outlet.
This utility model can reduce the pressure in the external world by the profile improving Blower Housing, improves wind
The efficiency of machine.Volute of blower uses separate design so that draught fan impeller and integral disassembly, assembly are convenient, significantly contract
The short overhaul time；As long as can accomplish that this kind of blower fan motor is not bad simultaneously, blower fan is the worst without reason
Barrier runs.
Being provided with a support below described motor, described support is provided with a connecting hole, and described rotating shaft passes institute
State connecting hole to be connected with described impeller.Readily accessible and maintenance, volute of blower and frame use separate design,
Make draught fan impeller and integral disassembly, assembly convenient, be greatly shortened the overhaul time；This kind of blower fan can be accomplished simultaneously
As long as motor is not bad, the failure-free operation that blower fan is the worst.
Being additionally provided with a wheel hub in described cover body, described wheel hub is provided with at least three reinforcement.
This utility model can make wheel hub more firm by reinforcement.
The impeller that described impeller is made up of almag.Almag is applicable to different occasions particularly
Explosion-proof working space.
Described air inlet is exposed to the outside of described cover body.It is easy to the entrance of air.
This utility model can reduce noise by cover body while protection impeller.
The inwall of described cover body is provided with a noise reduction layer, the thickness of described noise reduction layer at 2cm～4cm, described in disappear
The noise reduction layer that sound-absorbing layer is made up of centrifugal plexiglas cotton or fiberglass needled mat.Optimize erasure effect.
The internal diameter of described air inlet is at 1190mm～1200mm.
The external diameter of described air inlet is at 1300mm～1320mm.
Described cover body is provided with grounding device, is connected with the earth by wire.Avoid in cover body static electricity gathered
Produce spark, to guarantee safety.
Accompanying drawing explanation
Fig. 1 is front view of the present utility model；
Fig. 2 is side view of the present utility model.
Detailed description of the invention
For the technological means making this utility model realize, creation characteristic, reach purpose and be prone to bright with effect
White understanding, is expanded on further this utility model below in conjunction with being specifically illustrating.
With reference to Fig. 1, Fig. 2, pressure fan in big flow, including a fan main body, fan main body includes one
Motor 1, motor is connected with an impeller 6 by a rotating shaft, and motor is positioned at the rear of impeller, and impeller outer is provided with
One cover body 3, impeller includes that at least ten two blades, at least ten two blades are recurvate blade；
The thickness of the central authorities of blade is more than the thickness of blade edge, and the thickness of blade successively decreases the most successively, leaf
The thickness at sheet edge is not more than 2cm.This utility model can reach same by using at least ten two blades
Relatively low rotating speed can be had so that overall fan noise is relative to same type wind in the case of sample airflow pressure
Machine noise declines.This utility model can not had by the structure optimizing blade in operating engineering
Carry phenomenon, improve the flow of blower fan.This utility model by with motor direct-connected, lose without any driving member,
So that motor produces power is all transferred to impeller, free of losses, reduce loss.Blower fan structure designs
Also it is novel unique, uses bending support, both can reduce sheet metal thickness, and increase support by bending
Intensity, keeps stability, can increase again workman according to using hands working place, significantly facilitate installation.Phase
Angle between adjacent two blades is not more than 30 °.This utility model limits the position of blade, blade
Angle of giving vent to anger is not more than 30 ° so that when air-flow leaves impeller, the tangential direction at blade radian reduces turbulent flow.
The front of impeller is provided with a shroud, and shroud is positioned at cover body, and shroud is provided with an air inlet 4, air intake
Being provided with an air intake cone 5 at Kou, air intake cone is the front bore ring body more than rear bore.This utility model
Limit the structure of air inlet, it is possible to when making air-flow enter blade, smooth-going produces without turbulent flow, thus improves
Fan efficiency, reduces the noise of air inlet.Cover body is worm frame, worm frame be arranged over one going out
QI KOU.This utility model can reduce the pressure in the external world by the profile improving Blower Housing, improves
The efficiency of blower fan.Volute of blower uses separate design so that draught fan impeller and integral disassembly, assembly are convenient, significantly
Shorten the overhaul time；As long as can accomplish that this kind of blower fan motor is not bad, the nothing that blower fan is the worst simultaneously
Failure operation.Being provided with a support 2 below motor, support is provided with a connecting hole, rotating shaft through connecting hole with
Impeller connects.Readily accessible and maintenance, volute of blower and frame use separate design so that draught fan impeller
Convenient with integral disassembly, assembly, it is greatly shortened the overhaul time；As long as can accomplish that this kind of blower fan motor is not bad simultaneously,
The failure-free operation that blower fan is the worst.Being additionally provided with a wheel hub in cover body, wheel hub is provided with at least three
Reinforcement.This utility model can make wheel hub more firm by reinforcement.
The impeller that impeller is made up of almag.It is the most explosion-proof that almag is applicable to different occasions
Working space.Air inlet is exposed to the outside of cover body.It is easy to the entrance of air.This utility model is by cover
Physical ability reduces noise while protection impeller.The inwall of cover body is provided with a noise reduction layer, the thickness of noise reduction layer
At 2cm～4cm, the noise reduction layer that noise reduction layer is made up of centrifugal plexiglas cotton or fiberglass needled mat.
Optimize erasure effect.The internal diameter of air inlet is at 1190mm～1200mm.The external diameter of air inlet exists
1300mm～1320mm.Cover body is provided with grounding device, is connected with the earth by wire.Avoid at cover body
Static electricity gathered produces spark, to guarantee safety.
Of the present utility model ultimate principle and principal character and of the present utility model excellent have more than been shown and described
Point.Skilled person will appreciate that of the industry, this utility model is not restricted to the described embodiments, above-mentioned
Principle of the present utility model is simply described, without departing from this utility model described in embodiment and description
On the premise of spirit and scope, this utility model also has various changes and modifications, these changes and improvements
In the range of both falling within claimed this utility model.This utility model claims scope by appended power
Profit claim and equivalent thereof define.
Claims (5)
1. pressure fan in big flow, including a fan main body, it is characterised in that described fan main body bag
Including a motor, described motor is connected with an impeller, after described motor is positioned at described impeller by a rotating shaft
Side, described impeller outer is provided with a cover body, and described impeller includes at least ten two blades, and described at least ten two
Sheet blade is recurvate blade；
The thickness of the central authorities of described blade is more than the thickness of described blade edge, and the thickness of described blade is by interior
To successively decreasing successively outward, the thickness of described blade edge is not more than 2cm.
Pressure fan in big flow the most according to claim 1, it is characterised in that: adjacent two leaves
Angle between sheet is not more than 30 °.
Pressure fan in big flow the most according to claim 1, it is characterised in that: described impeller
Front is provided with a shroud, and described shroud is positioned at described cover body, and described shroud is provided with an air inlet, institute
Stating air inlet and be provided with an air intake cone, described air intake cone is the front bore ring body more than rear bore.
Pressure fan in big flow the most according to claim 1, it is characterised in that: described cover body in
Worm frame, described worm frame be arranged over a gas outlet.
Pressure fan in big flow the most according to claim 1, it is characterised in that: under described motor
Side is provided with a support, and described support is provided with a connecting hole, and described rotating shaft passes described connecting hole with described
Impeller connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620207342.5U CN205578305U (en) | 2016-03-17 | 2016-03-17 | Pressure fan in large -traffic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620207342.5U CN205578305U (en) | 2016-03-17 | 2016-03-17 | Pressure fan in large -traffic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205578305U true CN205578305U (en) | 2016-09-14 |
Family
ID=56868410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620207342.5U Active CN205578305U (en) | 2016-03-17 | 2016-03-17 | Pressure fan in large -traffic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205578305U (en) |
-
2016
- 2016-03-17 CN CN201620207342.5U patent/CN205578305U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |