CN1752461A - Horizontal flow fan - Google Patents
Horizontal flow fan Download PDFInfo
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- CN1752461A CN1752461A CN 200410072149 CN200410072149A CN1752461A CN 1752461 A CN1752461 A CN 1752461A CN 200410072149 CN200410072149 CN 200410072149 CN 200410072149 A CN200410072149 A CN 200410072149A CN 1752461 A CN1752461 A CN 1752461A
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- impeller
- horizontal flow
- exhausting air
- flow fan
- fan
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Abstract
A transverse flow fan consists of a fan set with a plurality of blades curved along the direction of rotation arranged at some distance on the periphery. It has a straight-line axial connected impeller, a stabilizer axial disposed on one side of the impeller casing for stable generation of vortex in the impeller, a clearance part disposed on the casing of the impeller for forming the air-discharge passage and keeping the impeller at the shortest distance, a dividing line formed with the stabilizer between the high-pressure and low-pressure parts, a spacer between the clearance part and the stabilizer and a rear guide forming even speed of discharging the air according to the different velocity distributions of discharging the air.
Description
Technical field
The invention relates to horizontal flow fan, more detailed is the speed of fanning other exhausting air about each unit of equal leaf-unifying wheel, and the performance that improves fan reduces the horizontal flow fan of noise.
Background technique
Generally, gas fan is arranged on air regulator or the refrigerating plant, forces to suck or discharge the device of outside air or cold air.Such gas fan is divided into low pressure blowing fan and high pressure blower according to head pressure, and the shape according to gas fan is divided into centrifugal blower, axial flow fan, crossflow blowers etc. in addition.Here, horizontal flow fan is a kind of of crossflow blowers, does not have axial inhalation flow, on the contrary with the axial vertical plane of impeller in the suction and the discharge of generation air.Horizontal flow fan with such characteristic, generally favourable when need produce the big air quantity of high pressure, and in that stable air-flow axially takes place, so be widely used in air regulator, particularly window type air regulator or the skylight type air regulator.
Below, as follows with reference to the structure of appended figure general description horizontal flow fan.
Fig. 1 a and Fig. 1 b are the front elevations of the velocity distribution of diagram sectional drawing of general horizontal flow fan structure and exhausting air, and the shell rear that the running shaft of horizontal flow fan is combined in (figure slightly) on the motor, cause the impeller 10 of air flows and be arranged on blade forms discharges the stream that sucks air; Back guider 20 with certain bending curvature along shell one side that is axially disposed within impeller, with the stable eddy current that occurs in the field, inside of impeller, forms stabilizer 30 formations of high-voltage section (H) and low voltage section (L) again together with the back guider.
One side of back guider 20 is kept the clearance portion 21 of beeline along axially being formed with impeller 10.The clearance portion 21 of back guider 20 and stabilizer 30 form the interface of cutting apart that sucks air and exhausting air together.
But, have the different shortcoming of speed of each fan group 11 exhausting air of impeller in the horizontal flow fan inevitably.This is because impeller 10 is made of a plurality of fan groups 11, and the air of discharging from each fan group 11 causes mutual influence, because of the different cause of flow characteristic.Generally, shown in Fig. 1 b, the situation of the impeller 10 that constitutes by 3 fan groups 11, the speed of exhausting air is slow in the fan group of central position fan group fast, the position, both sides.Each fan group 11, the center exhausting air fastest, the demarcation strip 15 side speed that arrive both sides more are slow more.
As described above, fan group 11 is because of the speed difference of exhausting air, and the mobile rather unstable of exhausting air not only reduces the performance of fan, and causes sizable noise because of unsettled flowing.
Summary of the invention
The present invention provides a kind of speed of each fan group exhausting air of equal leaf-unifying wheel for solving the technical problem that exists in the above-mentioned technology, improves the performance of fan, reduces the horizontal flow fan of noise.
The technological scheme that the present invention takes for the technical problem that exists in the above-mentioned technology of solution is:
A kind of horizontal flow fan of the present invention comprises that the fan group of arranging at a certain distance along a plurality of blades of sense of rotation bending constitutes along the axial impeller that connects in upright arrangement on circumference; In shell one side of impeller along axial setting and the stable stabilizer that is created on the eddy current of impeller inside; Be arranged on the discharge stream that forms air on the shell of impeller, the clearance portion that forms certain distance with impeller and stabilizer form the boundary of high-voltage section and low voltage section, interval between clearance portion and the impeller is according to the different back guiders that form the speed of even exhausting air of velocity distribution of exhausting air; The back guider is according to the clearance portion of back guider and the interval between the impeller, and is big in the fireballing part of exhausting air, in the different radius of curvature of the little policy setting of the slow-footed part of exhausting air; The clearance portion of back guider and the interval between the impeller in each fan group of impeller, are positioned at gap, the fan group interval maximum of central authorities, and the gap is more little at interval by the impeller both sides more for each fan group.The clearance portion of back guider and the interval between the impeller with in each fan group switching centre maximum, form by the more little radius of curvature of the demarcation strip counterpart of both sides more; The clearance portion that connects the back guider forms with different mutually radius of curvature to the curved surface of the exhaust port velocity distribution according to exhausting air; The radius of curvature of back guider is big in the fireballing part of exhausting air, and the part that the speed of exhausting air is little is little; The radius of curvature of back guider is big on the counterpart of the central fan group that is positioned at impeller, and is little on the fan group counterpart of both sides.
Advantage and good effect that the present invention has are: the interval between the clearance portion of horizontal flow fan impeller of the present invention and back guider considers that with the radius of curvature of back guider the velocity mode of exhausting air is provided with inequalityly, energy is the speed of the other exhausting air of constituent parts fan of leaf-unifying wheel all, stablize flowing of exhausting air, can obviously reduce noise when improving the performance of fan thus.
Description of drawings
Fig. 1 a and Fig. 1 b are the front elevations of the velocity distribution of the sectional drawing of general horizontal flow fan structure and exhausting air.
Fig. 2 a is the front elevation of the horizontal flow fan structure according to the present invention.
Fig. 2 b is the sectional drawing of the horizontal flow fan structure according to the present invention.
Fig. 3 is the front elevation of the horizontal flow fan exhausting air velocity distribution according to the present invention.
Main symbol description
10: impeller 30: stabilizer
120: back guider 121: clearance portion
R1, R2: radius of curvature
Embodiment
For further understanding summary of the invention of the present invention, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
Fig. 2 a is the front elevation of the horizontal flow fan structure according to the present invention, and 2b is the sectional drawing of the horizontal flow fan structure according to the present invention, the 3rd, and the front elevation of the velocity distribution of horizontal flow fan exhausting air according to the present invention.
Shown in Fig. 2 a and 2b, horizontal flow fan according to the present invention is combined in (figure slightly) on the motor with axle, cause the impeller 10 of air flows, the shell rear that is arranged on blade form to discharge sucks the stream of air, along the back guider 120 of certain curvature bending, along shell one side that is axially disposed within impeller, and the eddy current in the stable field, inside that occurs in impeller and the stabilizer 30 that the back guider forms high-voltage section and low voltage section together constitute.
One side of back guider 120 is kept the clearance portion 121 of beeline along axially being formed with impeller 10.The clearance portion 121 of back guider 20 and stabilizer 30 form the interface that sucks air and exhausting air together.
The present invention is the speed of the air of even each fan group 11 discharge, and the clearance portion 121 of back guider and the interval between the impeller 10 are provided with difference according to the velocity distribution of exhausting air.This is because between the clearance portion 121 of back guider and the impeller 10 be the important factor of bringing influence to the speed of exhausting air at interval, so even its speed is decided in the gap by the velocity mode of considering exhausting air.
In sum, the interval of strengthening in the fireballing fan group 11 of exhausting air between the clearance portion 121 of the back guider corresponding with the fan group can reduce its speed, and its speed can be improved in the interval that dwindles in the slow-footed fan group of exhausting air in contrast between the clearance portion 121 of the back guider corresponding with the fan group.At this moment, in the former horizontal flow fan, the speed of exhausting air is shown in Fig. 1 b, and the fan group 11 that is positioned at central authorities is the fastest, and the fan group is slow more near both sides more.In the fan group 11 of impeller of the present invention, be positioned at the clearance portion 121a of fan group and back guider of central authorities and interval (a) that impeller constitutes than interval (b) setting of the clearance portion 121b of the fan group that is positioned at both sides and back guider and impeller formation greatly.
In addition, the speed of each fan group exhausting air in the former horizontal flow fan, its center is the fastest, and to arrive the both sides demarcation strip more slow more, and the clearance portion 121 of back guider and the interval between the impeller 10 form along different curvature so that each fan group 11 and aforesaid velocity distribution are corresponding among the present invention.That is, by the clearance portion 121 of each fan group 11 and back guider and center, the interval maximum between the impeller 10, form to both sides demarcation strip 15 more little radius of curvature more.
Have different mutually radius of curvature formation from clearance portion 121 and the interval between the impeller 10 (a, the b) of top back as can be known guider along the fan group, curvature is that the center connects and composes with the point of inflexion corresponding to demarcation strip 15.
The present invention is for the even speed of each fan group 11 exhausting air, and the clearance portion 121 of guider is connected to the curved surface of exhaust port from behind, forms with different mutually radius of curvature according to the velocity distribution of exhausting air.This be because at curved surface 123a, the 123b at clearance portion 121 rears of back guider and the interval between the impeller 10, be to bring the important factor of influence equally no less than the clearance portion of back guider and the speed of giving exhausting air in the gap between the impeller, so the radius of curvature R 1 of back guider, R2 consider that the velocity mode of exhausting air decides, evenly its speed.
In sum, in the fireballing fan group 11 of exhausting air, strengthen the radius of curvature of the back guider corresponding with the fan group, gap between increasing and the impeller 10, can underspeed, in the slow-footed fan group of exhausting air, reduce the radius of curvature of back guider in contrast relatively, dwindle and impeller between the gap, can improve speed.
In the former horizontal flow fan, the speed of exhausting air is shown in Fig. 1 b, and the fan group that is positioned at central authorities is the fastest, and the fan group is slow more near both sides more.In the fan group 11 of impeller of the present invention and be positioned at central authorities fan group correspondence the back guider radius of curvature (R1) than the radius of curvature (R2) of the back guider that is positioned at both sides fan group correspondence be provided with greatly.
The horizontal flow fan of Gou Chenging as mentioned above, impeller 10 along the direction of blade 13 bendings in a clockwise direction or rotation counterclockwise, then the inside of impeller produces the forced flow of eddy current generation air.Impeller 10 rotation, then the imaginary line with the clearance portion 121 that connects stabilizer 30 and back guider is a benchmark, and the one side forms low voltage section, and opposite side forms high-voltage section.Air sucks by the inside of low voltage section to impeller 10, along with the sense of rotation rotation of impeller and along with the guiding of back guider 120 is discharged to high-voltage section.Detailed icon one embodiment in Fig. 1 a.
At this moment, because of the speed of the different exhausting airs of each fan group flow pattern of impeller might be different, but as shown in Figure 3, the back guider radius of curvature (R1, R2) that the clearance portion 121 of back guider and the interval between the impeller 10 (a, b) form together, consider that the flow pattern that each fan group is had is provided with inequalityly, evenly the speed of exhausting air.Thereupon, flowing of exhausting air is stable, can obviously reduce the noise that is caused by flowing instability in the performance that improves fan.
So far be that the center is illustrated to the present invention with its feasible embodiment, the technician who has general knowledge in the technical field under the present invention can make other distortion in basic fundamental scope of the present invention.Here, basic fundamental scope of the present invention embodies in the claims, and the enterolithic form of its equal scope should belong in its claim scope.
Claims (7)
1, a kind of horizontal flow fan, comprise that the fan group of arranging at a certain distance along a plurality of blades of sense of rotation bending constitutes along the axial impeller that connects in upright arrangement on circumference, in shell one side of impeller along axial setting and the stable stabilizer that is created on the eddy current of impeller inside, be arranged on the discharge stream that forms air on the shell of impeller, form the clearance portion of certain distance and the boundary that stabilizer forms high-voltage section and low voltage section with impeller; It is characterized in that the interval between clearance portion and the impeller is according to the different back guiders that form even exhausting air speed of velocity distribution of exhausting air.
2, horizontal flow fan according to claim 1, it is characterized in that: the back guider is according to the clearance portion of back guider and the interval between the impeller, and is big according to the fireballing part at exhausting air, in the different radius of curvature of the little policy setting of the slow-footed part of exhausting air.
3, horizontal flow fan according to claim 2, it is characterized in that: the clearance portion of back guider and the interval between the impeller, in the fan group of impeller, be positioned at gap, the fan group interval maximum of central authorities, the gap is more little at interval by the impeller both sides more for the fan group.
4, horizontal flow fan according to claim 3 is characterized in that: the clearance portion of back guider and the interval between the impeller, and with in the maximum of each fan group switching centre, form by the more little radius of curvature of the demarcation strip counterpart of both sides more.
5, horizontal flow fan according to claim 1 is characterized in that: the clearance portion that connects the back guider forms with different mutually radius of curvature to the curved surface of the exhaust port velocity distribution according to exhausting air.
6, horizontal flow fan according to claim 5 is characterized in that: the radius of curvature of back guider is big in the fireballing part of exhausting air, and the part that the speed of exhausting air is little is little.
7, horizontal flow fan according to claim 6 is characterized in that: the radius of curvature of back guider is big on the counterpart of the central fan group that is positioned at impeller, and is little on the fan group counterpart of both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410072149 CN1752461A (en) | 2004-09-24 | 2004-09-24 | Horizontal flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410072149 CN1752461A (en) | 2004-09-24 | 2004-09-24 | Horizontal flow fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1752461A true CN1752461A (en) | 2006-03-29 |
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ID=36679431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410072149 Pending CN1752461A (en) | 2004-09-24 | 2004-09-24 | Horizontal flow fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1752461A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2957773A4 (en) * | 2013-02-12 | 2016-08-03 | Daikin Ind Ltd | Air conditioner |
-
2004
- 2004-09-24 CN CN 200410072149 patent/CN1752461A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2957773A4 (en) * | 2013-02-12 | 2016-08-03 | Daikin Ind Ltd | Air conditioner |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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