CN1289827C - Cross flow fan - Google Patents
Cross flow fan Download PDFInfo
- Publication number
- CN1289827C CN1289827C CN 02116639 CN02116639A CN1289827C CN 1289827 C CN1289827 C CN 1289827C CN 02116639 CN02116639 CN 02116639 CN 02116639 A CN02116639 A CN 02116639A CN 1289827 C CN1289827 C CN 1289827C
- Authority
- CN
- China
- Prior art keywords
- impeller
- stabilizer
- blower fan
- unit blower
- spacing
- 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
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a cross flow fan which comprises unit fans composed of a plurality of blades, wherein the blades bend along a rotary direction and are arrayed according to certain space on the circumference; a plurality of unit fans are connected in series into an impeller along an axial direction. After bending with specified curvature, a wind guiding plate is arranged behind an outer case of the impeller and forms a discharging passage. A stabilizer is arranged along an axial direction, keeps certain distance with the impeller, and forms boundary for dividing a high voltage part and a low voltage part with a gap of a back wind guiding plate. The space between the stabilizer and the impeller can be set to different space according to the condition of the air exhausting speed. The space between the stabilizer and the impeller is large for high air exhausting speed parts, and contrarily, the space is small for low high air exhausting speed parts. Connections between the stabilizer and the impeller form a curve with specific curvature according to the rules. The speed for exhausting air is uniform.
Description
Technical field
The present invention relates to cross flow fan.
Background technique
General gas fan is arranged on the device of forcing to suck or discharge outside air or cold air on air conditioner or the refrigerating plant.This gas fan is divided into fan with low voltage and high pressure blower according to head pressure; Be divided into centrifugal blower, axial fan, cross-flow type gas fan etc. according to blade.A kind of as the cross-flow type gas fan of cross flow fan wherein, the suction and the discharge that in the plane of impeller shaft, produce air.Cross flow fan with above-mentioned characteristic generally helps producing the big air quantity of high malleation, is widely used in air conditioner, particularly wall-through type air conditioner and courtyard formula air conditioner.
Below with reference to back accompanying drawing paper the structure of cross flow fan is carried out simple explanation.
Fig. 1 a expresses the profile diagram of cross flow fan structure simply.Fig. 1 b expresses the cross-section profile of cross flow fan structure and the velocity contour of exhausting air simply.As shown in the figure, general cross flow fan has following structure: the impeller 10 that produces air flows is connected with motor (not expressing among the figure); Be arranged on the rear of impeller housing according to the back wind deflector 20 of specific curvature bending, form air flue; Stabilizer 30 is arranged on a side of impeller housing along axle direction, is stabilized in the eddy current that the impeller inner region produces, and forms the boundary of dividing the high-voltage section low voltage section with the clearance portion of back wind deflector.
One side of back wind deflector 20 forms clearance portion 21, and clearance portion 21 and impeller 10 are along the shortest distance of axial maintenance.At this moment the clearance portion 21 of back wind deflector forms the boundary that sucks gas and discharge gas with stabilizer 30.
Working procedure to cross flow fan with said structure is elaborated below.Impeller 10 rotations form eddy current in the inside of impeller, are forced to flow by the eddy current air.Be described in more detail, as shown in Figure 1a, impeller 10 is along clockwise direction rotation, and the auxiliary line that links to each other with the clearance portion 21 of stabilizer 30 and back wind deflector is a benchmark, the place ahead (being the right side in drawing) formation low voltage section, and air is forced to suction; The rear of auxiliary line (being the left side in drawing) forms high-voltage section, and air is along with the guiding of back wind deflector 20 is discharged from.In sum, cross flow fan does not have axial air-flow, and forms the suction and the discharge of air in perpendicular to the plane of 10 in impeller.
There are the following problems on air-flow character to have the cross flow fan of said structure.
The air velocity that each unit blower fan 11 of impeller 10 is discharged is inhomogeneous, that is to say that impeller 10 is made up of a plurality of unit blower fan 11, and the air that each unit blower fan 11 is discharged interacts, and changes flow characteristic.Shown in Fig. 1 b, constitute under the situation of impeller 10 by three unit blower fans, middle unit blower fan exhausting air is fastest, and the unit blower fan exhausting air speed of both sides is slow slightly.In addition, the center exhausting air of each unit blower fan is fastest, and both sides of edges speed is the slowest.
As mentioned above,, make the mobile rather unstable of exhausting air, reduced the performance of blower fan, because unsettled flowing causes sizable noise along with the exhausting air speed difference of unit blower fan.
Summary of the invention
Technical problem to be solved by this invention is, a kind of cross flow fan is provided, and makes the speed of each unit blower fan exhausting air even, improves the performance of blower fan, and reduces noise.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is: the spacing between stabilizer and the impeller is arranged to different distances according to the exhausting air speed conditions, makes the speed of exhausting air even.
Spacing between described stabilizer and the impeller is big for the fireballing partial distance of exhausting air, and is little for the slow-footed partial distance of exhausting air on the contrary.Be connected to form curve according to the spacing between above-mentioned rule stabilizer and the impeller with specific curvature.
In the described impeller, for the unit blower fan in the middle of being positioned at, the spacing maximum between stabilizer and the impeller; For the unit blower fan that is positioned at both sides, the spacing between stabilizer and the impeller reduces successively.
In the described unit blower fan, in the stabilizer of central position and the spacing maximum between the impeller, stabilizer and the spacing between the impeller toward the demarcation strip place correspondence of both sides is more little more.Link the curve that formation has specific curvature according to the spacing between above-mentioned rule stabilizer and the impeller.
Described stabilizer is that the end corresponding with impeller has the crooked to the inside panel component of specific curvature according to the speed distribution of discharging gas along axle direction.
The invention has the beneficial effects as follows: the spacing between impeller and the stabilizer be consider each unit blower fan flow velocity difference and be arranged to different distance, can make the speed of exhausting air even.So discharge the stable air that flows, improve the performance of blower fan, also greatly reduce because the noise that flowing instability causes.
Description of drawings
Fig. 1 a expresses the profile diagram of cross flow fan structure simply.
Fig. 1 b expresses the cross-section profile of cross flow fan structure and the velocity band distribution diagram of exhausting air simply.
Fig. 2 expresses the cross-section profile of cross flow fan of the present invention.
Fig. 3 expresses the planimetric map of stabilizer of the cross flow fan of the present invention of Fig. 2.
Fig. 4 expresses the cross-section profile of cross flow fan structure of the present invention of Fig. 2 and the velocity band distribution diagram of exhausting air.
In the drawings
10. impeller 11. unit blower fans 13. blades
15. demarcation strip 20. back wind deflector 21. clearance portion
30. stabilizer 100. stabilizers 101. ends
110. core 120. two side portions
Embodiment
Below in conjunction with the drawings and specific embodiments, cross flow fan of the present invention is described in further details, at first, Fig. 2 expresses the cross-section profile of cross flow fan of the present invention.Fig. 3 expresses the planimetric map of stabilizer of the cross flow fan of the present invention of Fig. 2.Fig. 4 expresses the cross-section profile of cross flow fan structure of the present invention of Fig. 2 and the velocity contour of exhausting air.
As shown in Figure 2, the cross flow fan of embodiments of the invention has following structure: the impeller 10 that produces air flows is connected with the axle of motor (not expressing among the figure); Be arranged on the rear of impeller housing according to the back wind deflector 20 of specific curvature bending, form the drain passageway of air; Stabilizer 100 is arranged on a side of impeller housing along axle direction, is stabilized in the eddy current that the impeller inner region produces, and forms the boundary of dividing the high-voltage section low voltage section with the clearance portion of back wind deflector.
Form clearance portion on one side of back wind deflector, clearance portion and impeller 10 are along the shortest distance of axial maintenance.At this moment the clearance portion of back wind deflector and stabilizer 100 form the boundary that sucks gas and discharge gas.
On the one hand, because the spacing between stabilizer 100 and the impeller 10 is the key factor that influences exhausting air speed, the present invention is even for the speed of the exhausting air that makes each unit blower fan, by changing the spacing size between stabilizer 100 and the impeller 10, change the velocity distribution situation of exhausting air, make the speed of exhausting air even.
As mentioned above,, the spacing between corresponding unit blower fan 11 and the stabilizer 100 is strengthened, can reduce the speed of exhausting air for the fireballing unit of exhausting air blower fan 11.On the contrary,, the spacing between corresponding unit blower fan 11 and the stabilizer 100 is dwindled, can improve the speed of exhausting air for the slow-footed unit of exhausting air blower fan 11.For the cross flow fan of prior art, shown in Fig. 1 b, middle unit blower fan 11 exhausting airs are fastest, and are more and more slower to two side unit blower fan exhausting air speed speed from middle unit blower fan.In the present invention, big for stabilizer 100 and the ratio of the spacing a between the impeller 10 at the stabilizer 100 and the spacing b between the impeller 10 of the unit of both sides blower fan at the temporary location blower fan.
In addition, for the cross flow fan of prior art, the exhausting air at the center of each unit blower fan is fastest, and demarcation strip 15 place's speed in past more both sides are slow more.So corresponding curve that forms of the velocity contour of the spacing between stabilizer 100 and the impeller 10 and each unit blower fan 11 in the present invention, with specific curvature.That is to say that the stabilizer 100 of each unit blower fan 11 and the past more both sides of spacing maximum, the spacing central position demarcation strip 15 place's spacings between the impeller 10 are more little.
As mentioned above, the spacing between stabilizer 100 and the impeller 10 forms the curve that has different curvature for each unit blower fan, and curve is that the center is formed by connecting with the turning point of demarcation strip 15 correspondences.
As shown in Figure 3, stabilizer 100 is that both sides are combined on the fixed plate, with the crooked to the inside panel component in impeller 10 corresponding ends 101.
That is to say impeller 10 corresponding three parts that are divided into that stabilizer 100 is formed according to three unit blower fans.In each part of stabilizer, the end of part 110 that is positioned at the center is darker than the end of the part 120 that is positioned at both sides.
Working procedure to cross flow fan with said structure is elaborated below.Impeller 10 according to clockwise or be rotated counterclockwise, then forms eddy current in the inside of impeller 10 according to the bending direction of blade 13, is forced to flow by the eddy current air.Be described in more detail, impeller 10 rotation is a benchmark with the auxiliary line that the clearance portion of stabilizer 100 and back wind deflector links to each other then, side formation low voltage section, opposite side formation high-voltage section.Air is inhaled into by low voltage section after the inside of impeller 10,, is discharged from through high-voltage section along the back wind deflector along the eddy current of impeller sense of rotation rotation.Please refer to Fig. 1 a example illustrated.
At this moment the speed of the different exhausting airs of the flow pattern of each unit blower fan of impeller is also different, but as shown in Figure 4, spacing between impeller 10 and the stabilizer 100 considers that the flow velocity of each unit blower fan 11 is arranged to difference, so can make the speed of exhausting air even.So the mobile of exhausting air is stabilized, improve the performance of blower fan, also greatly reduce in addition because the noise that flowing instability causes.
Claims (2)
1. a cross flow fan comprises the unit blower fan of being made up of a plurality of blades (13) (11), and blade (13) is along the sense of rotation bending, and blade (13) is arranged according to certain intervals on circumference, and a plurality of unit blower fans (11) become impeller (10) along axial series; Be arranged on the rear formation drain passageway of impeller housing according to the back wind deflector (20) of specific curvature bending; Stabilizer (100) keeps a determining deviation along axle direction setting and impeller (10), clearance portion (21) with back wind deflector (20) forms the boundary of dividing the high-voltage section low voltage section, spacing between stabilizer (100) and the impeller (10) is arranged to different distances according to the exhausting air speed conditions, in each unit blower fan (11), corresponding to the central position, spacing maximum between stabilizer (100) and the impeller (10), stabilizer (100) and the spacing between the impeller (10) toward the both sides correspondence is more little more, it is characterized in that: in the unit blower fan (11) of impeller (10), for the unit blower fan (11) in the middle of being positioned at, the spacing maximum between stabilizer (100) and the impeller (10); For the unit blower fan (11) that is positioned at both sides, the spacing between stabilizer (100) and the impeller (10) reduces successively.
2. according to the said cross flow fan of claim 1, it is characterized in that: stabilizer (100) is to distribute along axle direction according to the speed of discharging gas to have the crooked to the inside panel component of specific curvature with the corresponding end of impeller (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02116639 CN1289827C (en) | 2002-04-15 | 2002-04-15 | Cross flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02116639 CN1289827C (en) | 2002-04-15 | 2002-04-15 | Cross flow fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1451886A CN1451886A (en) | 2003-10-29 |
| CN1289827C true CN1289827C (en) | 2006-12-13 |
Family
ID=29221019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02116639 Expired - Fee Related CN1289827C (en) | 2002-04-15 | 2002-04-15 | Cross flow fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1289827C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101285479B (en) * | 2008-05-23 | 2013-04-10 | 山东理工大学 | Through-flow double channel blower fan |
-
2002
- 2002-04-15 CN CN 02116639 patent/CN1289827C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1451886A (en) | 2003-10-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1107808C (en) | Impeller of fan | |
| US8419355B2 (en) | Fluid flow machine featuring an annulus duct wall recess | |
| CN1112519C (en) | Centrifugal turbomachinery | |
| CN1254642C (en) | Transverse flow pressure fan | |
| CN1282844A (en) | Centrifugal blower | |
| CN1784547A (en) | Multi-vane centrifugal blower | |
| CN1403717A (en) | Blower | |
| CN1093922C (en) | Axial fan | |
| CN1940307A (en) | Fan and blower unit having the same | |
| CN102341603B (en) | Propeller fan | |
| CN1289827C (en) | Cross flow fan | |
| US6543997B2 (en) | Inlet guide vane for axial compressor | |
| CN1184438C (en) | Air conditioner | |
| CN1188605C (en) | Cross flow fan | |
| CN1265100C (en) | Cross flow fan | |
| CN1727689A (en) | Blowing fan possessing centrifugal fan and cross flow fan | |
| CN100560984C (en) | Centrifugal multi-blade fan | |
| CN200949556Y (en) | Low noise cooling fan blade | |
| CN1273748C (en) | Cross flow fan | |
| CN1237283C (en) | Multi-vane fan for air conditioning equipment of car | |
| CN1289825C (en) | Cross flow fan | |
| CN1683795A (en) | Multiblade blower fan | |
| CN1755144A (en) | Crossflow fan | |
| CN115523161B (en) | Low-pressure axial flow fan | |
| JPH08159099A (en) | Axial flow fan |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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 |