CN2285383Y - High-pressure centrifugal blower fan with air-resistant ring - Google Patents
High-pressure centrifugal blower fan with air-resistant ring Download PDFInfo
- Publication number
- CN2285383Y CN2285383Y CN 96231709 CN96231709U CN2285383Y CN 2285383 Y CN2285383 Y CN 2285383Y CN 96231709 CN96231709 CN 96231709 CN 96231709 U CN96231709 U CN 96231709U CN 2285383 Y CN2285383 Y CN 2285383Y
- Authority
- CN
- China
- Prior art keywords
- panel
- cylindrical
- outcurve
- air intake
- introversion
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a draught apparatus, particularly a high-pressure centrifugal fan with an air-resistant ring. The utility model is characterized in that the entopleuron of the air intake cover board (3) positioned in the body case (1) is provided with an air-resistant ring with sealing action which can decrease eddy current loss and noise. The draught fan has the advantages of high full pressure efficiency and low noise.
Description
The utility model relates to a kind of ventilation equipment, particularly a kind of centrifugal high pressure fan with choke circle.
Existing high pressure positive blower, one bigger space is arranged between the air intake cover plate on impeller shroud and the casing, so just reduced the sealability of high pressure positive blower impeller front end office, make the internal leakage of blower fan in above-mentioned space increase, thereby increased the formation of the air whirl of impeller front end office, cause the flow losses of air-flow, increased the impact noise of the relative casing inner surface of air, and made the total pressure efficiency of blower fan obviously descend.
The purpose of this utility model is to provide a kind of centrifugal high pressure fan with choke circle, and this blower fan has total pressure efficiency height, advantage that noise is low.
The purpose of this utility model is achieved through the following technical solutions:
A kind of centrifugal high pressure fan that the utility model provides with choke circle, it comprises impeller (2) in the casing (1), casing (1) and the air intake cover plate (3) on casing (1) return panels, air intake cover plate (3) parallels with the return panels of casing (1), and its structural feature is: air intake cover plate (3) is on the interior side inner panel face of casing (1) and is fixed with the choke circle that seals, can effectively reduce eddy current loss and noise.
By above technological scheme as seen, be fixed with on the side inner panel face of the utility model in air intake cover plate (3) is in casing (1) and seal, can effectively reduce the choke circle of eddy current loss and noise, just occupied most of space between impeller (2) shroud and the air intake cover plate (3) by the choke circle like this, make the sealability of blower fan in this space be improved significantly, because above-mentioned improvement can reduce the internal leakage of blower fan, make the minimizing that circulates that portion gas produces in casing, overcome the shortcoming that air-flow is returned effectively, thereby can reduce the formation of air whirl, can reduce the flow losses of air-flow, can reduce in the blower fan because the noise that air whirl produced, and make the noise and the vortex phenomenon that produce at the blower fan fore-end reach minimum degree, like this, the fan outlet airspeed is fast, and pressure is big, total noise of centrifuge is quite low, thereby realized the reduction noise, improve the purpose of total pressure efficiency, therefore, the utlity model has the total pressure efficiency height, the advantage that noise is low.
Description of drawings:
Fig. 1 is embodiment 1 a structural representation;
Fig. 2 is embodiment 2 a structural representation.
The utility model is described in further detail below in conjunction with drawings and Examples:
Embodiment 1:
Referring to enclosing 1, present embodiment comprises impeller (2) in the casing (1), choke circle, casing (1) and the air intake cover plate (3) on casing (1) return panels, air intake cover plate (3) parallels with the return panels of casing (1), the choke circle that seals, can effectively reduce eddy current loss and noise is fixed on air intake cover plate (3) and is on the interior side inner panel face of casing (1), and it is surrounded by cylindrical inside and outside curved plate (4), (6) and conical curved plate (5) with impeller (2) coaxial line, and its radial cross section is shaped as
Shape, wherein: the height of cylindrical introversion panel (4) is less than the height of cylindrical outcurve panel (6), after cylindrical introversion panel (4) is sleeved in the cylindrical outcurve panel (6), one end of one end and cylindrical outcurve panel (6) all is fixed on the side inner panel face of air intake cover plate (3), conical curved plate (5) simultaneously with the other end Joint of cylindrical introversion panel (4) and cylindrical outcurve panel (6).
Embodiment 2:
Referring to Fig. 2, present embodiment comprises casing (1), the choke circle, impeller (2) in the casing (1) and the air intake cover plate (3) on casing (1) return panels, air intake cover plate (3) parallels with the return panels of casing (1), seal, the choke circle that can effectively reduce eddy current loss and noise is fixed on air intake cover plate (3) and is on the interior side inner panel face of casing (1), and it be by with the cylindrical outcurve panel (9) of impeller (2) coaxial line, conical introversion panel (7) and a ring connecting plate (8) that parallels with air intake cover plate (3) surround, and its radial cross section is shaped as
Shape, wherein: conical introversion panel (7) is identical with the height of cylindrical outcurve panel (9), after conical introversion panel (7) is sleeved in the cylindrical outcurve panel (9), one end of end that its opening is little and cylindrical outcurve panel (9) all is fixed on the side inner panel face of air intake cover plate (3), ring connecting plate (8) simultaneously with the big end of conical introversion panel (7) upper shed and the other end Joint of cylindrical outcurve panel (9).
Claims (3)
1, a kind of centrifugal high pressure fan with choke circle, it comprises impeller (2) in the casing (1), casing (1) and the air intake cover plate (3) on casing (1) return panels, air intake cover plate (3) parallels with the return panels of casing (1), it is characterized in that: air intake cover plate (3) is on the interior side inner panel face of casing (1) and is fixed with the choke circle that seals, can effectively reduce eddy current loss and noise.
2, the centrifugal high pressure fan with choke circle according to claim 1 is characterized in that: the choke circle is surrounded by cylindrical inside and outside curved plate (4), (6) and conical curved plate (5) with its axis of impeller (2), and its radial cross section is shaped as
Shape, wherein: the height of cylindrical introversion panel (4) is less than the height of cylindrical outcurve panel (6), after cylindrical introversion panel (4) is sleeved in the cylindrical outcurve panel (6), one end of one end and cylindrical outcurve panel (6) all is fixed on the side inner panel face of air intake cover plate (3), conical curved plate (5) simultaneously with the other end Joint of cylindrical introversion panel (4) and cylindrical outcurve panel (6).
3, the centrifugal high pressure fan with choke circle according to claim 1, it is characterized in that: the choke circle is by being surrounded with cylindrical outcurve panel (9), conical introversion panel (7) and a ring connecting plate (8) that parallels with air intake cover plate (3) of impeller (2) coaxial line, and its radial cross section is shaped as
Shape, wherein: conical introversion panel (7) is identical with the height of cylindrical outcurve panel (9), after conical introversion panel (7) is sleeved in the cylindrical outcurve panel (9), one end of end that its opening is little and cylindrical outcurve panel (9) all is fixed on the side inner panel face of air intake cover plate (3), ring connecting plate (8) simultaneously with the big end of conical introversion panel (7) upper shed and the other end Joint of cylindrical outcurve panel (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96231709 CN2285383Y (en) | 1996-04-22 | 1996-04-22 | High-pressure centrifugal blower fan with air-resistant ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96231709 CN2285383Y (en) | 1996-04-22 | 1996-04-22 | High-pressure centrifugal blower fan with air-resistant ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2285383Y true CN2285383Y (en) | 1998-07-01 |
Family
ID=33908813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96231709 Expired - Fee Related CN2285383Y (en) | 1996-04-22 | 1996-04-22 | High-pressure centrifugal blower fan with air-resistant ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2285383Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100578020C (en) * | 2007-03-28 | 2010-01-06 | 中强光电股份有限公司 | Centrifugal air blower |
| CN102080840A (en) * | 2009-11-30 | 2011-06-01 | 博西华电器（江苏）有限公司 | Range hood |
| CN107143526A (en) * | 2017-05-11 | 2017-09-08 | 南通升科节能技术有限公司 | Centrifugal blower |
-
1996
- 1996-04-22 CN CN 96231709 patent/CN2285383Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100578020C (en) * | 2007-03-28 | 2010-01-06 | 中强光电股份有限公司 | Centrifugal air blower |
| CN102080840A (en) * | 2009-11-30 | 2011-06-01 | 博西华电器（江苏）有限公司 | Range hood |
| CN107143526A (en) * | 2017-05-11 | 2017-09-08 | 南通升科节能技术有限公司 | Centrifugal blower |
| CN107143526B (en) * | 2017-05-11 | 2023-12-26 | 江苏升科节能技术有限公司 | Centrifugal fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |