CN2398458Y - Sawtooth volute - Google Patents
Sawtooth volute Download PDFInfo
- Publication number
- CN2398458Y CN2398458Y CN 99241010 CN99241010U CN2398458Y CN 2398458 Y CN2398458 Y CN 2398458Y CN 99241010 CN99241010 CN 99241010 CN 99241010 U CN99241010 U CN 99241010U CN 2398458 Y CN2398458 Y CN 2398458Y
- Authority
- CN
- China
- Prior art keywords
- spiral case
- sawtooth
- utility
- model
- blower fan
- 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
Links
Images
Abstract
The utility model relates to a sawtooth type volute casing, which is suitable for the fields such as ventilating equipment, air conditioners, vehicles, household appliances, industrial and agricultural machinery, etc. The utility model has the technical characteristic that the cross section of an inner wall of the volute casing is provided with saw teeth with the space of 1 mm to 200 mm and the depth of 1 mm to 100 mm. The utility model has the characteristics of effectively reduced flow loss of gases in the volute casing, reduced noise of a blower fan, increased aerodynamic characteristics of the blower fan, etc.
Description
The utility model relates to a kind of spiral case, particularly a kind of zigzag system spiral case, and it is applicable to fields such as ventilation equipment, air-conditioning, vehicle, household electric appliance, industrial and agricultural machinery.
In background technique, the cross section of inboard wall of spiral case is normally straight, it with and the ventilating vane wheel composition ventilation blower fan that connects of motor, the gas that leaves impeller is concentrated, water conservancy diversion, and change the part kinetic energy diffusion of gas into static pressure, the mobile generation of gas in spiral case lost and caused and noise, it improved for overcoming these defectives.
The purpose of this utility model is that a kind of zigzag system spiral case will be provided, and it can reduce the flow losses of gas in spiral case effectively, reduces the noise of blower fan, improves the aerodynamic characteristic of blower fan.
The purpose of this utility model is achieved in that
A kind of zigzag system spiral case, its spiral case cross section of inboard wall has the sawtooth of spacing 1-200 millimeter, degree of depth 1-100 millimeter.
Described sawtooth is square, also is dihedral, also can be circular arc.
Described serrated portion is square, and part is a dihedral.
Described serrated portion is square, and part is a circular arc.
Described serrated portion is a dihedral, and part is a circular arc.
Described serrated portion is square, and part is a dihedral, and part is a circular arc.
The utility model is compared the good effect that is produced with background technique:
1, since with the spiral case cross section of inboard wall by the straight flexuose that changes into, so it can reduce the flow losses of gas in spiral case effectively, reduce the noise of blower fan, the aerodynamic characteristic of raising blower fan.
Below in conjunction with accompanying drawing, the utility model is further described:
Fig. 1 is a structural drawing of the present utility model.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the structural drawing of dihedral 4 for sawtooth among Fig. 2.
Fig. 4 is the structural drawing of circular arc 5 for sawtooth among Fig. 2.
Referring to accompanying drawing, the cross section of inboard wall 2 of spiral case 1 has sawtooth, and described sawtooth also can be polygonal etc.The driven by motor impeller rotates in the zigzag system spiral case, the air-flow that the impeller work done produces flows in the sawtooth spiral case, by the sawtooth wall, with gas flow guiding, make air-flow mobile smooth and easy and difficult generation vortex in spiral case, can reduce the pulsation of air-flow simultaneously effectively at the sawtooth at snail tongue place, reduce noise, reduce the gas flow loss, thereby reduce the noise of blower fan, improve the aerodynamic characteristic of blower fan.
Claims (8)
1, a kind of zigzag system spiral case is characterized in that spiral case (1) cross section of inboard wall (2) has the sawtooth of spacing 1-200 millimeter, degree of depth 1-100 millimeter.
2, zigzag system spiral case according to claim 1 is characterized in that described sawtooth is square (3).
3, zigzag system spiral case according to claim 1 is characterized in that described sawtooth is dihedral (4).
4, zigzag system spiral case according to claim 1 is characterized in that described sawtooth is circular arc (5).
5, zigzag system spiral case according to claim 1 is characterized in that described serrated portion is square (3), and part is dihedral (4).
6, zigzag system spiral case according to claim 1 is characterized in that described serrated portion is square (3), and part is circular arc (5).
7, zigzag system spiral case according to claim 1 is characterized in that described serrated portion is dihedral (4), and part is circular arc (5).
8, zigzag system spiral case according to claim 1 is characterized in that described serrated portion is square (3), and part is dihedral (4), and part is circular arc (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99241010 CN2398458Y (en) | 1999-12-13 | 1999-12-13 | Sawtooth volute |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99241010 CN2398458Y (en) | 1999-12-13 | 1999-12-13 | Sawtooth volute |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2398458Y true CN2398458Y (en) | 2000-09-27 |
Family
ID=34027950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99241010 Expired - Fee Related CN2398458Y (en) | 1999-12-13 | 1999-12-13 | Sawtooth volute |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2398458Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104976744A (en) * | 2014-04-14 | 2015-10-14 | 海尔集团公司 | Air flue structure of air conditioner indoor unit |
| CN105546608A (en) * | 2016-02-01 | 2016-05-04 | 宁波方太厨具有限公司 | Outlet housing for range hood |
-
1999
- 1999-12-13 CN CN 99241010 patent/CN2398458Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104976744A (en) * | 2014-04-14 | 2015-10-14 | 海尔集团公司 | Air flue structure of air conditioner indoor unit |
| CN104976744B (en) * | 2014-04-14 | 2017-11-28 | 海尔集团公司 | Air conditioner indoor machine air duct structure |
| CN105546608A (en) * | 2016-02-01 | 2016-05-04 | 宁波方太厨具有限公司 | Outlet housing for range hood |
| CN105546608B (en) * | 2016-02-01 | 2018-05-29 | 宁波方太厨具有限公司 | A kind of outlet housing used for range hood |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2398458Y (en) | Sawtooth volute | |
| CN203548269U (en) | Backward type centrifugal fan | |
| CN2395073Y (en) | Composite blade | |
| CN101749272B (en) | Fan impeller | |
| CN2416417Y (en) | Induced draft fan | |
| CN205207221U (en) | Fan | |
| CN2578581Y (en) | Extra-thin induced fans | |
| CN2630540Y (en) | Centrifugal fan with two air outlets | |
| CN210623197U (en) | Air inlet structure of centrifugal fan | |
| CN2748676Y (en) | Fan vane for air conditioner | |
| CN2217756Y (en) | Multi-vane centrifugal ventilating machine | |
| CN202001389U (en) | Low-noise energy-saving fan box | |
| CN1699760A (en) | Air intake construction of axial flow fan | |
| CN211423013U (en) | Volute of range hood | |
| CN209959525U (en) | Centrifugal blower exhaust volute and centrifugal blower thereof | |
| CN101440820B (en) | Ventilator with large air amount, far firing range and low noise | |
| CN201671879U (en) | Forward centrifugal fan | |
| CN2639576Y (en) | Wormwheel fan | |
| CN214742244U (en) | Structure for increasing air collecting cover and improving air quantity by volute provided with axial flow fan blade | |
| CN2470589Y (en) | Forward multi-blade centrifugal ventilating fan | |
| CN203161645U (en) | Acceleration air inlet duct impeller | |
| CN201344604Y (en) | Large air-quantity, long range and low noise ventilator | |
| CN219197654U (en) | Tower fan with novel structure | |
| CN214887970U (en) | Novel centrifugal fan | |
| CN202579336U (en) | Centrifugal pipeline fan |
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 |