CN202900706U - Marine anti-explosion mixed flow fan - Google Patents
Marine anti-explosion mixed flow fan Download PDFInfo
- Publication number
- CN202900706U CN202900706U CN 201220545737 CN201220545737U CN202900706U CN 202900706 U CN202900706 U CN 202900706U CN 201220545737 CN201220545737 CN 201220545737 CN 201220545737 U CN201220545737 U CN 201220545737U CN 202900706 U CN202900706 U CN 202900706U
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- CN
- China
- Prior art keywords
- centrifugal impeller
- blower fan
- axial flow
- barrel body
- inner barrel
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Abstract
The utility model relates to a marine anti-explosion mixed flow fan which comprises an air inlet, an axial flow motor, a centrifugal impeller, an inner barrel body, an outer barrel body, a postposition guide vane and an air outlet. The centrifugal impeller is installed on a motor shaft of the axial flow motor, the axial flow motor is positioned in the inner barrel body, the inner barrel body and the outer barrel body are connected through the postposition guide vane, the air inlet and the centrifugal impeller are matched to be installed at one end of the outer barrel body, and the air outlet is positioned at the other end of the outer barrel body. The marine anti-explosion mixed flow fan combines air supply structures of a traditional axial flow fan and a traditional centrifugal fan, achieves air amount and air pressure requirements of the centrifugal fan, has the advantages that the axial flow fan is flexible to install and is suitable for high-requirement marine equipment.
Description
Technical field
The utility model relates to a kind of blower fan, is a kind of marine explosion-proof flow-mixing blower fan specifically.
Background technique
Marine type fan generally is divided into centrifugal blower and axial-flow blower two classes, and the characteristics of centrifugal blower are that air quantity is little, and pressure is high; The characteristics of axial-flow blower are that air quantity is high, and pressure is little; But along with developing rapidly of ship industry, shipborne equipment is more and more advanced, and the performance of blower fan is had higher requirement.
Centrifugal blower needs larger space and special pipeline to arrange usually, because the restriction in environment peculiar to vessel and place does not generally have enough spaces to arrange; Axial-flow blower can utilize on the ship ventilator pipe to arrange, but its pressure is not high, in general, the static pressure of axial-flow blower is not super 600Pa generally, when system needs higher static pressure, only achieve the goal by series connection blower fan or reduction user demand, this two schemes one is to increase operating cost, the secondth, the reduction demand must increase the operation difficulty to other side.
Summary of the invention
Can't satisfy the deficiency of shipborne equipment high performance requirements in order to solve centrifugal blower in the prior art or axial-flow blower, the utility model provides a kind of compact structure, and is easy for installation, and ventilation is large, blast is high, drafting efficiency is high, the marine explosion-proof flow-mixing blower fan that noise is low.
During the technical solution adopted in the utility model: a kind of marine explosion-proof flow-mixing blower fan, it is characterized in that comprising intake grill, axial flow motor, centrifugal impeller, inner barrel, outer cylinder body, exit guide vane and exhaust outlet, centrifugal impeller is installed on the motor shaft of axial flow motor, the axial flow motor is installed in the inner barrel, connect through exit guide vane between inner barrel and outer cylinder body, intake grill cooperates with centrifugal impeller and is installed on outer cylinder body one end, the outer cylinder body the other end is installed exhaust outlet, described intake grill is the arc tubular, and described centrifugal impeller outlet port outer cylinder body is the taper of outside convergence.
Further, described centrifugal impeller is cast aluminium alloy casting machine aerofoil profile; Described exit guide vane is the twisted blade formula.
Again further, described intake grill is that the both ends open diameter is all greater than the arc tubular of intermediate portion diameter; Described exhaust outlet is the outside convergence cylinder that shrinks of interior diameter with the noise reduction layer.
Adopt above technological scheme, the beneficial effects of the utility model are: intake grill adopts the arc tubular, is conducive to improve the whole air intake efficiency of blower fan; Centrifugal impeller outlet port outer cylinder body is the taper of outside convergence, and tapering determines that according to the blower fan size rearward stator is mobile to force the air-flow of being sent by centrifugal impeller, reduces windage loss, improves fan performance; Impeller adopts cast aluminium alloy casting machine aerofoil profile, has good air dynamic behaviour, and its weight is low, intensity good, rigidity is large, and flow coefficient is large, and drafting efficiency improves 5%-10%, and noise hangs down the 3-5 decibel; The axial flow motor is installed in the inner barrel, and inner barrel is in exit guide vane is connected in outer cylinder body, and connecting relation is stable between each parts, reduces device assembles weight, reduces manufacture cost, improves Whole Equipment intensity; Exit guide vane is the twisted blade formula, and the efficient district of stator and stable operation range are wide, and off design performance is good, is conducive to improve working life; Exhaust outlet is the convergence cylinder with the noise reduction layer, can change the sectional area of traffic channel, strengthens the outlet velocity of blower fan, makes blower fan produce larger pressure, and after the exhaust outlet of blower fan added the noise reduction layer, fan noise can reduce by 5 ~ 8dB.
The utility model had both reached centrifugal blower air quantity, blast requirement in conjunction with the air-supply structure of traditional axial-flow blower and centrifugal blower, had again axial-flow blower advantage flexible for installation, and the ship equipment that is fit to high request uses.
Description of drawings
Fig. 1 is the utility model structural representation.
Among the figure: outer cylinder body 1, inner barrel 2, axial flow motor 3, motor shaft 4, centrifugal impeller 5, intake grill 6, exit guide vane 7, exhaust outlet 8, noise reduction layer 9.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Shown in Figure 1, a kind of marine explosion-proof flow-mixing blower fan comprises outer cylinder body 1, inner barrel 2, axial flow motor 3, centrifugal impeller 5, intake grill 6, exit guide vane 7 and exhaust outlet 8.Centrifugal impeller 5 is installed on the motor shaft 4 of axial flow motor 3, axial flow motor 3 is installed in the inner barrel 2, inner barrel 2 places in the outer cylinder body 1 through exit guide vane 7 connections, exit guide vane 7 is the twisted blade formula, intake grill 6 cooperates with centrifugal impeller 5 and is installed on outer cylinder body 1 one ends, intake grill 6 is that the both ends open diameter is all greater than the arc tubular of intermediate portion diameter, the outer cylinder body in centrifugal impeller 5 outlet ports is outside opening shape, centrifugal impeller 5 is cast aluminium alloy casting machine aerofoil profile, outer cylinder body 1 the other end is installed exhaust outlet 8, exhaust outlet 8 is the outside convergence cylinder that shrinks of interior diameter with the noise reduction layer, and exhaust outlet 8 is interior convergence cylinder with noise reduction layer 9.
Claims (5)
1. marine explosion-proof flow-mixing blower fan, it is characterized in that: comprise intake grill, axial flow motor, centrifugal impeller, inner barrel, outer cylinder body, exit guide vane and exhaust outlet, centrifugal impeller is installed on the motor shaft of axial flow motor, the axial flow motor is installed in the inner barrel, connect through exit guide vane between inner barrel and outer cylinder body, intake grill cooperates with centrifugal impeller and is installed on outer cylinder body one end, and the outer cylinder body the other end is installed exhaust outlet.
2. marine explosion-proof flow-mixing blower fan according to claim 1, it is characterized in that: described centrifugal impeller is cast aluminium alloy casting machine aerofoil profile.
3. marine explosion-proof flow-mixing blower fan according to claim 1, it is characterized in that: described exit guide vane is the twisted blade formula.
4. marine explosion-proof flow-mixing blower fan according to claim 1 is characterized in that: described intake grill is that the both ends open diameter is all greater than the arc tubular of intermediate portion diameter.
5. marine explosion-proof flow-mixing blower fan according to claim 1 is characterized in that: described exhaust outlet is the interior convergence cylinder that outwards shrinks with the diameter of noise reduction layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220545737 CN202900706U (en) | 2012-10-24 | 2012-10-24 | Marine anti-explosion mixed flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220545737 CN202900706U (en) | 2012-10-24 | 2012-10-24 | Marine anti-explosion mixed flow fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202900706U true CN202900706U (en) | 2013-04-24 |
Family
ID=48121383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220545737 Expired - Lifetime CN202900706U (en) | 2012-10-24 | 2012-10-24 | Marine anti-explosion mixed flow fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202900706U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900685A (en) * | 2012-10-24 | 2013-01-30 | 江苏兆胜空调有限公司 | Blast protection mixed flow blower for ship |
-
2012
- 2012-10-24 CN CN 201220545737 patent/CN202900706U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900685A (en) * | 2012-10-24 | 2013-01-30 | 江苏兆胜空调有限公司 | Blast protection mixed flow blower for ship |
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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: 20130424 |