CN205783183U - Smoke exhaust ventilator - Google Patents
Smoke exhaust ventilator Download PDFInfo
- Publication number
- CN205783183U CN205783183U CN201620490006.6U CN201620490006U CN205783183U CN 205783183 U CN205783183 U CN 205783183U CN 201620490006 U CN201620490006 U CN 201620490006U CN 205783183 U CN205783183 U CN 205783183U
- Authority
- CN
- China
- Prior art keywords
- air inlet
- spiral
- ring
- smoke exhaust
- exhaust ventilator
- 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.)
- Active
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of smoke exhaust ventilator, it includes spiral case, air inlet ring outer ring, and air inlet ring outer ring is fixed on the air inlet of spiral case, is mainly technically characterized ny it and also includes connecting support, spiral inner ring, connects support and be fixed on air inlet ring outer ring, and spiral inner ring is fixed on connection support.Have and can effectively improve the air-flow flow regime in the air inlet of centrifugal blower, make air-flow be easier to enter into the pivot region of wind wheel, and then improve fan efficiency, reduce the features such as fan noise.
Description
Technical field
This utility model relates to a kind of smoke exhaust ventilator.
Background technology
In the prior art, the air-flow in smoke exhaust ventilator enters from the air inlet of centrifugal blower volute, flows out from the air outlet of spiral case after wind wheel drives.Air-flow has large effect in the steady state of flow of air inlet to the flow of centrifugal blower and the size of noise.For improving the air-flow flow regime in air inlet, present most of centrifugal blowers have installed air inlet ring additional in air inlet, though current air inlet ring can improve the flow regime of charge air flow, but still less effective to a certain extent.The defect such as cause the stream condition of the centrifugal blower import department that there is smoke exhaust ventilator the best.For overcoming these defects, smoke exhaust ventilator is improved.
Utility model content
Technical problem to be solved in the utility model is to provide for a kind of smoke exhaust ventilator, it can improve the air-flow flow regime in the air inlet of centrifugal blower effectively, make air-flow be easier to enter into the pivot region of wind wheel, and then improve fan efficiency, reduce fan noise.
This utility model solves its technical problem and the technical scheme is that
It includes spiral case, air inlet ring outer ring, and air inlet ring outer ring is fixed on the air inlet of spiral case, and it also includes connecting support, spiral inner ring, connects support and is fixed on air inlet ring outer ring, and spiral inner ring is fixed on connection support.
Connect support is shaped as strip or cross shape or toroidal.
The cross section of spiral inner ring is circular arc line or SPL.
The scanning pattern of spiral inner ring is a spiral curve, and the number of turns n value of spiral curve is 1～12.
In spiral inner ring, the cross section along spiral curve scanning is uiform section or variable cross-section.
The peak in the cross section of spiral inner ring is H=0.01R～0.08R to the relation of the maximum radius of spin R that distance is H, H and helix of the minimum point in cross section.
Air inlet ring outer ring is provided with through hole, screw or bolt and air inlet ring outer ring is fixed on through through hole the air inlet of spiral case.
This utility model is produced beneficial effect compared with background technology:
1, support is connected owing to this utility model uses, spiral inner ring, connect support to be fixed on air inlet ring outer ring, spiral inner ring is fixed on connection support, spiral inner ring is fixed on the structure on air inlet ring outer ring by connecting support, when air-flow enters into flow-guiding structure region, air-flow is except there being the outside movement tendency of a spiral, can also be quickly to footpath external diffusion, enter into quickly in impeller, therefore it can improve the air-flow flow regime in the air inlet of centrifugal blower effectively, air-flow is made to be easier to enter into the pivot region of wind wheel, and then raising fan efficiency, reduce fan noise.
Accompanying drawing explanation
Fig. 1 is the structural representation of flow-guiding structure in this utility model.
Fig. 2 is air inlet ring outer ring 2 and the structural representation of spiral inner ring 4.
Fig. 3 is air current flow schematic diagram in flow-guiding structure.
Fig. 4 is the structural representation of spiral inner ring 4.
Detailed description of the invention
Referring to shown in accompanying drawing 1, accompanying drawing 2, accompanying drawing 3, accompanying drawing 4, the present embodiment includes spiral case 1, air inlet ring outer ring 2, connects support 3, spiral inner ring 4, air inlet ring outer ring 2 is fixed on the air inlet of spiral case 1, connects support 3 and is fixed on air inlet ring outer ring 2, and spiral inner ring 4 is fixed on connection support 3.
Further preferably, connect support 3 is shaped as strip or cross shape or toroidal.
Further preferably, the cross section of spiral inner ring 4 is circular arc line or SPL, in order to wind-guiding.
Further preferably, the scanning pattern of spiral inner ring 4 is a spiral curve, and the number of turns n value of spiral curve is 1～12.
Further preferably, the cross section scanned along spiral curve in spiral inner ring 4 is uiform section or variable cross-section.
Further preferably, the distance of the minimum point of the peak in the cross section of spiral inner ring 4 to cross section is H, H and the relation of the maximum radius of spin R of helix is H=0.01R～0.08R.
Further preferably, air inlet ring outer ring 2 is provided with through hole, screw or bolt and air inlet ring outer ring 2 is fixed on through through hole the air inlet of spiral case 1, with convenient for assembly.
When air-flow enters into the water conservancy diversion region in cigarette machine from outward, due to the effect of spiral inner ring 4, air-flow is except there being the outside movement tendency of a spiral, moreover it is possible to quickly to footpath external diffusion, the air inlet through spiral case 1 enters in impeller quickly.
Therefore can effectively improve the air-flow flow regime in the air inlet of centrifugal blower, make air-flow be more easy to enter into the pivot region of wind wheel, and then improve fan efficiency, reduce fan noise.
Claims (7)
1. a smoke exhaust ventilator, it includes spiral case (1), air inlet ring outer ring (2), air inlet ring outer ring (2) is fixed on the air inlet of spiral case (1), it is characterized in that it also includes connecting support (3), spiral inner ring (4), connecting support (3) to be fixed on air inlet ring outer ring (2), spiral inner ring (4) is fixed in connection support (3).
Smoke exhaust ventilator the most according to claim 1, it is characterised in that described connection support (3) be shaped as strip or cross shape or toroidal.
Smoke exhaust ventilator the most according to claim 2, it is characterised in that the cross section of described spiral inner ring (4) is circular arc line or SPL.
Smoke exhaust ventilator the most according to claim 3, it is characterised in that the scanning pattern of described spiral inner ring (4) is a spiral curve, the number of turns n value of spiral curve is 1～12.
Smoke exhaust ventilator the most according to claim 4, it is characterised in that in described spiral inner ring (4), the cross section along spiral curve scanning is uiform section or variable cross-section.
Smoke exhaust ventilator the most according to claim 5, it is characterised in that the distance of the peak in the cross section of described spiral inner ring (4) to the minimum point in cross section is H, H and the relation of the maximum radius of spin R of helix is H=0.01R～0.08R.
7. according to the smoke exhaust ventilator described in any one of claim 1～6, it is characterised in that described air inlet ring outer ring (2) is provided with through hole, screw or bolt and air inlet ring outer ring (2) are fixed on through through hole the air inlet of spiral case (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620490006.6U CN205783183U (en) | 2016-05-26 | 2016-05-26 | Smoke exhaust ventilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620490006.6U CN205783183U (en) | 2016-05-26 | 2016-05-26 | Smoke exhaust ventilator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205783183U true CN205783183U (en) | 2016-12-07 |
Family
ID=58111106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620490006.6U Active CN205783183U (en) | 2016-05-26 | 2016-05-26 | Smoke exhaust ventilator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205783183U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812852A (en) * | 2019-03-08 | 2019-05-28 | 珠海格力电器股份有限公司 | Oil filter screen of range hood and range hood |
-
2016
- 2016-05-26 CN CN201620490006.6U patent/CN205783183U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812852A (en) * | 2019-03-08 | 2019-05-28 | 珠海格力电器股份有限公司 | Oil filter screen of range hood and range hood |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104564828B (en) | Noise reducing casing for expanding centrifugal blower discharge area | |
| CN201757064U (en) | Mixed-flow blower | |
| CN205503562U (en) | Take centrifugal fan spiral case of water conservancy diversion structure | |
| CN102182707A (en) | Centrifugal fan for range hood and volute profile generation method thereof | |
| CN104806571A (en) | Efficient centrifugal air blower based on computational fluid dynamic simulation | |
| CN201582209U (en) | Antisurge structure of compressor volute of turbocharger | |
| CN107965471A (en) | A kind of current collector and application have the centrifugal blower of the current collector | |
| CN205783183U (en) | Smoke exhaust ventilator | |
| CN204476871U (en) | A kind of centrifugal blower slip ring adding anti-vortex ring | |
| CN107975497A (en) | A kind of centrifugal blower volute | |
| CN204610381U (en) | A kind of centrifugal blower of impeller air inlet end band labyrinth seal structure | |
| CN206845541U (en) | A kind of current collector and application have the centrifugal blower of the current collector | |
| CN205047514U (en) | Cross -flow fan blade | |
| CN206530542U (en) | A kind of double turbine centrifugal volute of blower used for range hood | |
| CN208886872U (en) | A kind of range hood with collector | |
| CN107975496A (en) | A kind of centrifugal blower volute | |
| CN216812286U (en) | Air inlet and backward centrifugal ventilator thereof | |
| CN206845545U (en) | A kind of centrifugal blower volute | |
| CN206845544U (en) | A kind of centrifugal blower volute | |
| CN204984995U (en) | Range hood | |
| CN210164688U (en) | Air duct volute of wing-shaped volute tongue | |
| CN206957980U (en) | multi-wing centrifugal fan blade | |
| CN206429440U (en) | One kind is without spiral case air-conditioning draught fan | |
| CN207935150U (en) | Impeller, fan and range hood | |
| CN206957981U (en) | A kind of multi-wing centrifugal fan blade |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |