CN2747386Y - Rear inclined centrifugal wind wheel - Google Patents
Rear inclined centrifugal wind wheel Download PDFInfo
- Publication number
- CN2747386Y CN2747386Y CN 200420093992 CN200420093992U CN2747386Y CN 2747386 Y CN2747386 Y CN 2747386Y CN 200420093992 CN200420093992 CN 200420093992 CN 200420093992 U CN200420093992 U CN 200420093992U CN 2747386 Y CN2747386 Y CN 2747386Y
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- CN
- China
- Prior art keywords
- wind wheel
- centrifugal wind
- blade
- mid
- game
- 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 discloses a rear inclined centrifugal wind wheel, which comprises a front disc, a vane and a middle disc. The utility model is characterized in that an angle between the vane and the plane of the middle disc is smaller than 90 DEG. The utility model forms an inner flow field of the impeller by the inclined arrangement of the vane relative to the middle disc, and the inner flow field is similar to a three-way flow passage. The change made by changing the cross section of a flow passage greatly reduces vortex loss which is produced by the airflow separation of the vane in the impeller and enhances the efficiency of the impeller.
Description
Technical field
The utility model relates to wind wheel, particularly a kind of hypsokinesis centrifugal wind wheel.
Background technique
Existing common hypsokinesis centrifugal wind wheel blade is perpendicular to impeller hub disk plane, because the vertical setting of blade, is rotated when ventilating, and can cause airflow breakaway and the eddy current loss that produces, thereby impeller adiabatic efficiency is reduced, and causes the waste of energy resources.
Summary of the invention
For addressing the above problem, the purpose of this utility model provides the high hypsokinesis centrifugal wind wheel of a kind of impeller adiabatic efficiency.
The purpose of this utility model is achieved in that a kind of hypsokinesis centrifugal wind wheel, comprises shroud, blade and mid-game, it is characterized in that: described blade and mid-game plane form the angle less than 90 °.
Described blade and mid-game plane form 60 ° of-80 ° of angles.
Described blade inner edge is welded with stiffening ring.
Described blade exit setting angle is 50 °-60 °.
Described wind wheel is single air intake or two air intake.
Described pair of intake air impeller left and right sides impeller blade distributes and staggers 20 °-25 °.
The utility model has formed the impeller interior flow field that is similar to the ternary runner by blade with respect to being in tilted layout of mid-game, by changing the variation of cross section of fluid channel shape, thereby reduced the eddy current loss that produces because of the blade airflow breakaway in the impeller greatly, improved impeller adiabatic efficiency.
Description of drawings
Fig. 1 is internal structure schematic representation of the present utility model (two air intake);
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the A-A sectional drawing of Fig. 2;
Fig. 4 is another an embodiment's of the present utility model structural representation (single air intake).
Embodiment
The utility model can be made into single air intake, also can be made into two air intakes.Two air intake wind wheels as shown in Figure 1 are made up of parts such as blade 2, mid-game 3, shroud 1, reel 5, stiffening rings 4.Shroud 1, blade 2 and mid-game 3 are by being welded together.Shroud 1 is that a kind of dual-side of cross section is the shroud of camber line.Blade 2 can be plate prismatic blade, also can be plate curved blade, is welded with stiffening ring 4 at blade 2 distribution inner circumferential edges, blade is linked into an integrated entity, to increase the rigidity of impeller.Have mounting hole in the mid-game 3, reel 5 is installed by bolt group 7.Reel 5 is installed together by flat key and main shaft, and design has Cock screw 6 to lock.In the present embodiment, be provided with 11 blades altogether, form 80 ° of angle α (as shown in Figure 3) between blade 2 and the mid-game 3, be arranged vertically different for 90 ° with traditional hypsokinesis wind wheel.The blade exit established angle is the decisive parameter of decision fan performance, and blade exit established angle β in the present embodiment is 53 °.For reducing noise, the blade 2 of mid-game left and right sides impeller can be distributed and stagger 22.5 °.
Shown in Figure 4 is single air intake wind wheel, one side owing to only in mid-game 3 blade 2 and shroud 1, therefore the mid-game 3 actual hub disks that become of this moment are set.
Claims (7)
1. a hypsokinesis centrifugal wind wheel comprises shroud (1), blade (2) and mid-game (3), it is characterized in that: described blade (2) and the angle of mid-game (3) plane formation less than 90 °.
2. hypsokinesis centrifugal wind wheel according to claim 1 is characterized in that: described blade (2) forms 60 ° of-80 ° of angles with mid-game (3) plane.
3. hypsokinesis centrifugal wind wheel according to claim 1 is characterized in that: described blade (2) inner edge is welded with stiffening ring (4).
4. hypsokinesis centrifugal wind wheel according to claim 1 is characterized in that: described blade (2) exit installation angle degree is 50 °-60 °.
5. hypsokinesis centrifugal wind wheel according to claim 1 is characterized in that: described wind wheel is single air intake or two air intake.
6. hypsokinesis centrifugal wind wheel according to claim 5 is characterized in that: the left and right sides impeller blade of described pair of air intake wind wheel distributes and staggers 20 °-25 °.
7. hypsokinesis centrifugal wind wheel according to claim 1 is characterized in that: the cross section dual-side of described shroud (1) is a camber line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420093992 CN2747386Y (en) | 2004-10-15 | 2004-10-15 | Rear inclined centrifugal wind wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420093992 CN2747386Y (en) | 2004-10-15 | 2004-10-15 | Rear inclined centrifugal wind wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2747386Y true CN2747386Y (en) | 2005-12-21 |
Family
ID=35707925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420093992 Expired - Fee Related CN2747386Y (en) | 2004-10-15 | 2004-10-15 | Rear inclined centrifugal wind wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2747386Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032211A (en) * | 2010-12-15 | 2011-04-27 | 西安交通大学 | Biconical impeller for range hood |
| CN104806569A (en) * | 2015-04-23 | 2015-07-29 | 杭州微光电子股份有限公司 | High-static-pressure backward centrifugal 225 high-efficiency wind wheel |
| WO2020042989A1 (en) * | 2018-08-29 | 2020-03-05 | 仨亿电器股份有限公司 | Backward inclined impeller having double air inlets |
-
2004
- 2004-10-15 CN CN 200420093992 patent/CN2747386Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032211A (en) * | 2010-12-15 | 2011-04-27 | 西安交通大学 | Biconical impeller for range hood |
| CN102032211B (en) * | 2010-12-15 | 2012-07-04 | 西安交通大学 | Biconical impeller for range hood |
| CN104806569A (en) * | 2015-04-23 | 2015-07-29 | 杭州微光电子股份有限公司 | High-static-pressure backward centrifugal 225 high-efficiency wind wheel |
| WO2020042989A1 (en) * | 2018-08-29 | 2020-03-05 | 仨亿电器股份有限公司 | Backward inclined impeller having double air inlets |
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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 |