CN208686652U - No back pressure buried heavy flow wind receiving element - Google Patents
No back pressure buried heavy flow wind receiving element Download PDFInfo
- Publication number
- CN208686652U CN208686652U CN201820915229.1U CN201820915229U CN208686652U CN 208686652 U CN208686652 U CN 208686652U CN 201820915229 U CN201820915229 U CN 201820915229U CN 208686652 U CN208686652 U CN 208686652U
- Authority
- CN
- China
- Prior art keywords
- fan housing
- air inlet
- fan
- section
- wind
- 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.)
- Withdrawn - After Issue
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a kind of no back-pressure flush type density current wind-engaging elements.The element mainly includes by two fan housing, blower parts, it is integrally in bottomless bowl-shape shape by fan housing, and wall surface is smooth surface, it is wherein rounded by air port and air inlet section, it is greater than by fan housing wind-engaging open area by fan housing air inlet area, it is fitted closely by fan housing air inlet with fans entrance seamless, is installed at the air outlet of blower.It is characterized in that the air inlet in blower adds one by fan housing, so that preferably polymerizeing from external core flow and sucking in blower, due to being in certain radian by fan housing, air-flow and wind-engaging cover wall face, which fit closely, to be avoided generating back-pressure.
Description
Technical field
The utility model relates to a kind of no back-pressure flush type density current wind-engaging elements, belong to centrifugal blower technical field.
Background technique
With the continuous development of fan industry, up to the present, blower is widely used in every field, each Ministry of Industry
Door.On the market, centrifugal fan and axial fan are using most commonly seen.The former is primarily adapted for use in the field of small flow, high pressure
Institute, and the latter be primarily adapted for use in big flow, low-pressure environment in.Centrifugal fan at work, air-flow by blower it is axial into
Enter blade space, driven by blade, radially away from impeller, leaves blower by the outlet conduits of design.
The import Duct design of centrifugal fan is unreasonable, is a major reason for causing blower to generate back-pressure.Tradition
Centrifugal fan it is not set by fan housing, mainstream air-flow can not be sucked well, will cause mix in the air-flow of sucking instead
More outside airs, therefore add one at air inlet and enabled to polymerize from external mainstream air-flow by fan housing
And the generation that back-pressure effect is avoided in sucking blower is fitted closely with wind-engaging cover hydraulically smooth surface.
In order to solve the problems, such as fans entrance back-pressure, it is necessary to improve existing design, devise a kind of band wind-engaging
The element of cover and nested type transition outlet.
Utility model content
The purpose of this utility model is that overcome above-mentioned the deficiencies in the prior art, designing one kind and enabling to outer core
Stream is close to inner wall and flows into blower and the element at fans entrance without back-pressure, more preferable sucking outer core stream.
This is formed without back-pressure flush type density current wind-engaging element by centrifugal fan, by fan housing two parts；Wherein, centrifugal wind
Machine is made of fan main body, fans entrance and fan outlet, by fan housing by wall surface, by fan housing wind-engaging mouth, by fan housing air inlet group
At；It is equal with Air Inlet of Centrifugal Fan area of section by fan housing air inlet area of section, and by fan housing air inlet and centrifugal wind
Machine entrance fits closely, seamless connection；Described is in bottomless bowl structure by fan housing, and wall surface surrounding is smooth surface, by fan housing
For air inlet diameter of section d with by fan housing wind-engaging mouth diameter of section D, radius ratio D/d is 1.5-2, is inhaled by fan housing height H with by fan housing
Air port diameter of section d ratio H/d be 0.75-1, wall radius R with by fan housing air inlet diameter of section d ratio R/d be 1.5-2.
Described to be filled shape by fan housing for bottomless bowl, this design can make outer core stream more preferably suck blower, reduce in wind-engaging
The pressure loss in cover, and in air inlet same circumference, area of section is maximum.Wall surface surrounding is smooth surface, is avoided
It is leaked out by fan housing.It is 1.5-2, D/d by fan housing air inlet diameter of section d and by fan housing wind-engaging mouth diameter of section D, radius ratio D/d
Excessive external air flow can be sucked greater than 2, reduces detection precision, and D/d cannot all suck outer core stream less than 1.5.
It is 0.75-1 by fan housing height H and by fan housing air inlet diameter of section d ratio H/d, H/d is greater than 1 cannot be fully embedded by fan housing
Shell cannot all be sucked outer core stream less than 0.75 by fan housing H/d.Wall radius R with by fan housing air inlet
Diameter of section d ratio R/d is 1.5-2, and R/d is greater than 2 by will appear back-pressure in fan housing, and R/d cannot be by outer core less than 1.5
Stream all suckings.
It is described without back-pressure flush type density current wind-engaging element, it is characterised in that: at by fan housing air inlet, on fan shaft
It is also mountable to have deflection cone；The deflection cone is in cone shape, water conservancy diversion cone height h and by fan housing air inlet (diameter of section d ratio
H/d is 0.5-0.86, bottom surface radius r be 0.4-0.6 by fan housing wind-engaging mouth diameter of section d ratio r/d, taper angle theta is 30 ° -45 °.
The deflection cone is 0.5- in cone shape, water conservancy diversion cone height h and by fan housing air inlet diameter of section d ratio h/d
0.86, taper angle theta is that 30 ° of -45 ° of h/d will affect outer core stream greater than 0.86 by fan housing, and h/d cannot reduce less than 0.58
The pressure loss of blower；θ is greater than 45 °, and to will lead to bottom surface radius excessive, can not install, θ cannot reduce the pressure of blower less than 30 °
Loss.Bottom surface radius r be 0.4-0.6 by fan housing wind-engaging mouth diameter of section d ratio r/d, r/d, which is greater than, 0.6 can not install, and r/d is small
In the pressure loss that 0.4 cannot reduce blower
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of no back-pressure flush type density current wind-engaging element of the utility model；
Fig. 2 is a kind of planar structure schematic diagram of no back-pressure flush type density current wind-engaging element of the utility model；
Fig. 3 is the structural schematic diagram by fan housing, wherein (a) by fan housing three-dimensional figure, (b) by fan housing front view；
Fig. 4 is the front view of deflection cone；
Figure label title: 1, centrifugal fan, 11, fan main body, 12, fans entrance, 12, fan outlet, 2, wind-engaging
Cover, 21, wall surface, 22, by fan housing wind-engaging mouth, 23, by fan housing air inlet.
Specific implementation method
Fig. 1 is the utility model structure diagram, and the course of work of system is illustrated referring to Fig. 1.
This is formed without back-pressure flush type density current wind-engaging element by centrifugal fan 1, by 2 two parts of fan housing.Wherein, centrifugal
Blower 1 is made of fan main body 11, fans entrance 12 and fan outlet 13, by fan housing 2 by wall surface 21, by fan housing wind-engaging mouth 22,
It is formed by fan housing air inlet 23.By fan housing air inlet 23 and the seamless close connection of fans entrance 12.
It is in bottomless bowl structure by fan housing, wall surface surrounding is smooth seamless, and is in certain radian, and that designs in this way is main
Effect is to suck blower preferably from the external core flow for injecting fans entrance, reduces the unrelated of sucking fans entrance surrounding
Air-flow improves detection accuracy, and fans entrance is avoided to generate back-pressure phenomenon.
Example one is 40mm by fan housing air inlet diameter of section d, is 60mm by fan housing wind-engaging mouth diameter of section D, by fan housing height
Degree H is 30mm, and wall radius R 60mm, water conservancy diversion cone height h are 20mm, and bottom surface radius r is 20mm, and taper angle theta is 45 °.?
Fan outlet connects sensor, which can detect petrol molecule, contain petrol molecule in the air-flow such as passed through, then sensor
Alarm.Gasoline bottle is opened in appropriate location in the middle part of core flow flow field, at this point, outer core stream blends petrol molecule, fluid-mixing
It is subjected to fan housing sucking blower, through fan outlet flow sensor after, sensor alarm is rung at this time.It repeats above-mentioned experiment ten times,
Alarm device has nine alarms, Success in Experiment.
Example two is 60mm by fan housing air inlet diameter of section d, is 1200mm by fan housing wind-engaging mouth diameter of section D, by fan housing
Height H is 60mm, and wall radius R 120mm, water conservancy diversion cone height h are 51.6mm, and bottom surface radius r is 30mm, and taper angle theta is
30 °, equipment works well in this case.Sensor is connected in fan outlet, which can detect petrol molecule, as passed through
Contain petrol molecule in air-flow, then sensor alarm.Gasoline bottle is opened in suitable position, outer core stream blends petrol molecule
When, core flow is subjected to fan housing sucking blower, and through fan outlet flow sensor after, sensor alarm is rung at this time.It repeats above-mentioned
Experiment ten times, alarm device have ten alarms, Success in Experiment.
Claims (2)
1. a kind of no back-pressure flush type density current wind-engaging element, it is characterised in that:
This is formed without back-pressure flush type density current wind-engaging element by centrifugal fan (1), by fan housing (2) two parts；Wherein, centrifugal
Blower (1) is made of fan main body (11), fans entrance (12) and fan outlet (13), by fan housing (2) by wall surface (21), wind-engaging
Cover is formed by air port (22), by fan housing air inlet (23)；By fan housing air inlet (22) area of section and Air Inlet of Centrifugal Fan
(12) area of section is equal, and is fitted closely by fan housing air inlet (22) and Air Inlet of Centrifugal Fan (12), seamless connection；
Described is in bottomless bowl structure by fan housing (2), and wall surface surrounding is smooth surface, by fan housing air inlet (23) diameter of section
For d with by fan housing wind-engaging mouth (22) diameter of section D, radius ratio D/d is 1.5-2, is cut by fan housing height H with by fan housing air inlet (23)
Face diameter d ratio H/d be 0.75-1, wall radius R with by fan housing air inlet (23) diameter of section d ratio R/d be 1.5-2.
2. no back-pressure flush type density current wind-engaging element according to claim 1, it is characterised in that:
At by fan housing air inlet (23), deflection cone (3) are also equipped on fan shaft；The deflection cone (3) is in cone
Shape, water conservancy diversion cone height h be 0.5-0.86 by fan housing air inlet (23) diameter of section d ratio h/d, bottom surface radius r inhales with by fan housing
Air port (23) diameter of section d ratio r/d is 0.4-0.6, and taper angle theta is 30 ° -45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820915229.1U CN208686652U (en) | 2018-06-13 | 2018-06-13 | No back pressure buried heavy flow wind receiving element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820915229.1U CN208686652U (en) | 2018-06-13 | 2018-06-13 | No back pressure buried heavy flow wind receiving element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208686652U true CN208686652U (en) | 2019-04-02 |
Family
ID=65878439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820915229.1U Withdrawn - After Issue CN208686652U (en) | 2018-06-13 | 2018-06-13 | No back pressure buried heavy flow wind receiving element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208686652U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799203A (en) * | 2018-06-13 | 2018-11-13 | 南京航空航天大学 | Without back-pressure flush type density current wind-engaging element |
-
2018
- 2018-06-13 CN CN201820915229.1U patent/CN208686652U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799203A (en) * | 2018-06-13 | 2018-11-13 | 南京航空航天大学 | Without back-pressure flush type density current wind-engaging element |
| CN108799203B (en) * | 2018-06-13 | 2024-03-19 | 南京航空航天大学 | Non-back pressure embedded heavy-current wind-receiving element |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208686652U (en) | No back pressure buried heavy flow wind receiving element | |
| CN104005962B (en) | Single-flow channel centrifugal pump with blade in flow channel | |
| CN206035843U (en) | Energy -efficient vertical pipeline centrifugal pump that singly inhales | |
| CN206190547U (en) | Doublestage jet pump | |
| CN104722222A (en) | Multi-point injection gas-liquid mixer | |
| CN202030327U (en) | Rotary valve feeding port structure | |
| CN204996290U (en) | Mixing workshop dust treatment system | |
| CN105082509B (en) | Device and method for pending material devolatilization | |
| CN116002380A (en) | Plant protection machine powder medicament air flow precision conveying device | |
| CN108799203A (en) | Without back-pressure flush type density current wind-engaging element | |
| CN205109890U (en) | Closed centrifugal separator exhaust apparatus | |
| CN202991517U (en) | A feeding and discharging device for a biogas digester | |
| CN211924555U (en) | A centrifugal pump impeller with separate vanes | |
| CN210196125U (en) | Fan and range hood with same | |
| CN207813946U (en) | A kind of MODEL VERTICAL MULTISTAGE PUMP | |
| CN208858644U (en) | A centrifugal compressor with a narrowed diffuser and partial guide vanes | |
| CN208169215U (en) | A kind of centrifugal pump | |
| CN105195339B (en) | A kind of closed centrifugal machine exhaust apparatus | |
| CN203246037U (en) | Sprue bushing of injection mold | |
| CN2842382Y (en) | Flush-dischange type impeller flow meter | |
| CN211422994U (en) | Pump middle section structure of cutting type guide sewage pump | |
| CN203978849U (en) | A kind of single channel centrifugal pump of runner built-in knife | |
| CN104175357B (en) | A kind of waste material siphon mechanism on disposable sanitary articles production line | |
| CN217330202U (en) | Fresh air device and air conditioner | |
| CN203476832U (en) | Low-noise centrifugal blower for rice production |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190402 Effective date of abandoning: 20240319 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190402 Effective date of abandoning: 20240319 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |