CN210623134U - High-efficient wet dual-purpose fan futilely - Google Patents
High-efficient wet dual-purpose fan futilely Download PDFInfo
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- CN210623134U CN210623134U CN201920936716.0U CN201920936716U CN210623134U CN 210623134 U CN210623134 U CN 210623134U CN 201920936716 U CN201920936716 U CN 201920936716U CN 210623134 U CN210623134 U CN 210623134U
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Abstract
The utility model provides a high-efficient wet dual-purpose fan futilely, including motor, movable vane wheel and fan housing, the motor includes casing, stator, rotor and end cover, the end cover is equipped with a plurality of diffusion pieces on the terminal surface of movable vane wheel side, the diffusion piece is followed outer circumference air outlet position department of movable vane wheel extends to with single arc on the inside wall of diffusion hole limit portion on the fan housing, it is a plurality of the diffusion piece becomes the radial distribution of spiral, end cover, fan housing and each diffusion piece combination are in form a plurality of independent diffusion water conservancy diversion wind channels between movable vane wheel air outlet and the fan housing diffusion hole. The utility model discloses compare in prior art, realize the water conservancy diversion diffusion of movable vane outlet air current through the diffuser, correspond the afterbody of diffuser on the fan housing and set up matched with diffuser hole, fan housing diffuser hole department lateral wall closely links to each other with the diffuser export, realizes dry and wet dual-purpose fan two-stage water conservancy diversion diffuser, and air current kinetic energy converts the pressure energy to more fully, has the aerodynamic performance of high static pressure efficiency.
Description
Technical Field
The utility model relates to a dust catcher motor technical field, concretely relates to high-efficient wet dual-purpose fan futilely.
Background
The dry and wet dual-purpose fan can be used in a dry environment and can also be used under the condition of moisture and little water, and is widely applied to various dry and wet dual-purpose dust collectors. As shown in fig. 1, a conventional wet and dry dual-purpose fan generally installs a fan housing 12 on one side of a motor end cover 11 close to an impeller 13, and the fan housing 12 opens a hole to discharge air laterally, the wet and dry dual-purpose fan is simple to manufacture, but only guides the air by an inner end surface of the fan housing 12 and an end surface of the end cover 11, and a communicated circumferential annular guide space is formed between the fan housing 12 and an air outlet of the impeller 13, so that the guide diffusion effect is poor, which causes the wet and dry dual-purpose fan of the dust collector to have generally low efficiency, and the maximum efficiency is less than 47%.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a high-efficient dry and wet dual-purpose fan.
In order to achieve the above object, the technical solution of the present invention is: a high-efficiency dry-wet dual-purpose fan comprises a motor, a movable impeller and a fan cover, wherein the motor comprises a shell, a stator, a rotor and an end cover, the stator and the rotor are arranged in an installation cavity formed by the shell and the end cover, and the rotor is provided with a rotating shaft extending out of the end cover; the movable impeller is arranged on the end surface side of the end cover opposite to the rotor side, and the movable impeller is connected with a rotating shaft of the rotor; the end face of the cover body of the fan cover is provided with an air inlet, and the circumferential side face of the cover body of the fan cover is provided with a plurality of diffusion holes; the end cover is provided with a plurality of diffusion sheets on the end surface of the movable impeller side, the diffusion sheets extend to the inner side wall of the edge part of the diffusion hole on the fan cover in a single arc shape from the position of the outer circumferential air outlet of the movable impeller, the plurality of diffusion sheets are distributed in a spiral radial shape, and the end cover, the fan cover and each diffusion sheet are combined between the movable impeller air outlet and the fan cover diffusion hole to form a plurality of independent diffusion flow guide air channels.
The utility model discloses compare in prior art, realize the water conservancy diversion diffusion of movable vane outlet air current through the diffuser, correspond the afterbody of diffuser on the fan housing and set up matched with diffuser hole, fan housing diffuser hole department lateral wall closely links to each other with the diffuser export, realizes dry and wet dual-purpose fan two-stage water conservancy diversion diffuser, and air current kinetic energy converts the pressure energy to more fully, has the aerodynamic performance of high static pressure efficiency.
Further, the diameter of the matching surface of the fan cover and the end cover is D1The diameter of the movable impeller is D2The outlet height of the movable impeller is h1The diameter of the inlet of the diffusion sheet is D3The inlet height h of the diffuser2The inlet angle of the diffusion sheet is β1The diameter of the outlet of the diffusion sheet is D4The outlet angle of the diffuser plate is β2The number of the leaves of the diffusion sheet is z1(ii) a Then D is3＝D2+(1.5～3)mm；D4＝D1；h2＝h1+(1～1.5)mm；D4/D3＝1.3～2；β1＝8～25°；β2＝15～40°；z1＝13～21。
By adopting the preferred scheme, the diffusion sheet is a single arc straight blade, and the diffusion sheet is straight in the axial direction of the fan, so that the fan is convenient to manufacture and easy to demould; compared with a conventional dry and wet dual-purpose fan, the fan with the design parameters of the diffuser can adjust the point position of the maximum efficiency of the dry and wet dual-purpose fan by adjusting the inlet angle of the diffuser; the reasonable diffusion piece parameter design enhances the flow guiding and diffusion effect on the airflow at the outlet of the movable impeller, so that the efficiency of the dry-wet dual-purpose fan is improved by 3% after the diffusion piece is increased, and the fan efficiency is averagely more than 51%.
Further, the inlet area S of the diffusion sheet1The area of the outlet of the diffuser is S2Then S is2/S1＝1.2～1.8。
By adopting the preferable scheme, the flow guide and diffusion effects of the diffusion sheet are realized to the maximum extent.
Further, the top diameter D of the inlet front edge of the diffuser plate31Greater than the diameter D of the bottom32，ΔD＝D31-D321-3 mm; the air outlet of the movable impeller is parallel to the front edge of the inlet of the pressure expansion sheet, and the distance between the air outlet of the movable impeller and the front edge of the inlet of the pressure expansion sheet is 0.75-1.5 mm.
By adopting the preferable scheme, the inclined design of the front edge of the diffuser ensures that the airflow at the air outlet of the movable impeller uniformly enters the diffuser, and the rotation noise is reduced.
Furthermore, an annular boss is arranged on the end cover and corresponds to the position right below the edge of the excircle of the lower blade of the movable impeller.
Further, the radial width of the annular boss is 2-4 mm, and the distance h between the surface of the annular boss and the lower blade of the movable impeller3＝0.3～0.6mm。
By adopting the preferable scheme, the annular boss design reduces the minimum distance between the surface of the end cover and the lower blade of the movable impeller, thereby reducing the disc friction loss of the dry-wet dual-purpose fan and improving the efficiency of the dry-wet dual-purpose fan by 0.8 percent after the annular boss is arranged on the end cover.
Further, the number z of diffusion holes on the wind shield2Equal to the number z of said spreading disks1The outer side wall of the diffusion hole is in a single arc shape, and the outer side walls of the diffusion holes are distributed in a spiral radial shape.
By adopting the preferable scheme, the fan cover diffusion hole is matched with the diffusion sheet, so that two-stage flow guide diffusion of the dry-wet dual-purpose fan is realized, and the highest efficiency of the dry-wet fan is further improved.
Further, the wrap angle of the outer side wall of a single diffusion hole is α1The diffusion angle of the diffusion hole is α2The angle of the outlet through hole of the diffusion hole in the outer circumferential direction of the fan cover is α3Outer sidewall wrap α of the diffuser hole1＝(360/z2) 0.5-0.65) and a diffusion angle α of the diffusion hole2Slightly larger than the exit angle β of the diffuser plate2，α2＝18～50°，α3＝(360/z2)-α1。
Further, the axial height h of the outlet through hole of the diffusion hole5Equal to the axial height h of the outlet of the diffusion sheet4。
With the preferred scheme, the outlet through hole angle α on the circumference of the fan cover3And a smaller angle value is adopted, so that the noise can be reduced while the integral high efficiency of the dry and wet fan is kept.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a prior art wet and dry blower;
FIG. 2 is a schematic structural diagram of an embodiment of the present invention;
FIG. 3 is a schematic structural view of an end cap according to another embodiment of the present invention;
FIG. 4 is a schematic structural view of an end cap according to another embodiment of the present invention;
fig. 5 is a schematic structural diagram of a fan housing according to another embodiment of the present invention;
fig. 6 is a schematic structural diagram of a fan housing according to another embodiment of the present invention;
FIG. 7 is a schematic structural diagram of another embodiment of the present invention;
fig. 8 is a performance curve of the high-efficiency dry and wet dual-purpose fan according to an embodiment of the present invention.
Names of corresponding parts represented by numerals and letters in the drawings:
11-end cap; 12-a fan cover; 13-moving impeller; 2-end cap; 21-diffusion sheet; 22-an annular boss; 3-moving impeller; 4-wind cover; 41-diffusion holes; 411-an outer side wall; 412-outlet through hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 2, the high-efficiency wet and dry dual-purpose fan comprises a motor, a movable impeller 3 and a fan housing 4, wherein the motor comprises a casing (not shown), a stator (not shown), a rotor (not shown) and an end cover 2, the stator and the rotor are arranged in a mounting cavity formed by the casing and the end cover 2, and the rotor is provided with a rotating shaft extending out of the end cover; the movable impeller 3 is arranged on the end face side of the end cover 2 opposite to the rotor side, and the movable impeller 3 is connected with a rotating shaft of the rotor; an air inlet is formed in the end face of the cover body of the air cover 4, and a plurality of diffusion holes 41 are formed in the circumferential side face of the cover body of the air cover 4; the end face of the end cover 2 on the movable impeller 3 side is provided with a plurality of diffusion sheets 21, the positions of the air outlets on the outer circumference of the movable impeller 3 of the diffusion sheets 21 extend to the inner side wall of the edge part of the diffusion hole 41 on the fan cover 4 in a single circular arc shape, the plurality of diffusion sheets 21 are distributed in a spiral radial shape, and the end cover 2, the fan cover 4 and the diffusion sheets 21 are combined between the air outlets of the movable impeller 3 and the fan cover diffusion hole 41 to form a plurality of independent diffusion guide air channels.
The beneficial effect of adopting above-mentioned technical scheme is: the motor rotor drives the movable impeller to rotate, airflow entering from an air inlet on the end face of the fan housing and discharged from an air outlet on the circumferential side face of the movable impeller is formed, flow guiding and pressure expansion of the airflow at the outlet of the movable impeller are achieved through the pressure expansion sheet, the tail portion of the fan housing corresponding to the pressure expansion sheet is provided with a matched pressure expansion hole, the side wall of the position of the pressure expansion hole of the fan housing is tightly connected with the outlet of the pressure expansion sheet, two-stage flow guiding and pressure expansion of the dry-wet dual-purpose fan is achieved, airflow kinetic energy is converted into pressure energy more fully.
As shown in fig. 2 to 4, 7 and 8, in other embodiments of the present invention, for clarity of description of the inlet angle and the outlet angle of the diffuser plate, the "circumference of any point in the radial plane around the center axis of the fan" will be referred to as "center circumference" of any point; the inlet angle of the diffusion sheet is an included angle formed by a tangent line of an inlet position point of the diffusion sheet on the central circumference and a tangent line of the inlet position point on the arc of the diffusion sheet; the outlet angle of the diffuser is the included angle formed by the tangent of the outlet position point of the diffuser on the center circumference and the tangent of the outlet position point on the arc of the diffuser. The fan cover 4 is matched with the end cover 2Diameter of the resultant surface is D1The diameter of the movable impeller 3 is D2The height of the outlet of the movable impeller 3 is h1The diameter of the inlet of the pressure expanding sheet 21 is D3The height h of the inlet of the pressure expansion piece 212The inlet angle of the diffuser 21 is β1The diameter of the outlet of the pressure-expanding piece 21 is D4The exit angle of the diffuser 21 is β2The number of leaves of the diffuser 21 is z1(ii) a Then D is3＝D2+(1.5～3)mm；D4＝D1；h2＝h1+(1～1.5)mm；D4/D3＝1.3～2；β1＝8～25°；β2＝15～40°；z113-21. The beneficial effect of adopting above-mentioned technical scheme is: the diffusion sheet is a single arc straight blade, is straight in the axial direction of the fan, is convenient to manufacture and is easy to demould; compared with a conventional dry and wet dual-purpose fan, the fan with the design parameters of the diffuser can adjust the point position of the maximum efficiency of the dry and wet dual-purpose fan by adjusting the inlet angle of the diffuser; the reasonable diffusion piece parameter design enhances the flow guiding and diffusion effect on the airflow at the outlet of the movable impeller, so that the efficiency of the dry-wet dual-purpose fan is improved by 3% after the diffusion piece is increased, and the fan efficiency is averagely more than 51%. As shown in fig. 8, when the maximum input power of the motor is 340.8W, the maximum efficiency of the diffuser plate parameter in the present embodiment is about 51.44% based on the IEC60312 electric fan performance test method.
In other embodiments of the present invention, the inlet area S of the diffuser plate is1The area of the outlet of the diffuser is S2Then S is2/S11.2 to 1.8. The beneficial effect of adopting above-mentioned technical scheme is: the flow guiding and pressure expanding functions of the pressure expanding sheet are realized to the maximum extent.
In other embodiments of the present invention, the top diameter D of the inlet front edge of the diffuser plate31Greater than the diameter D of the bottom32，ΔD＝D31-D321-3 mm; the air outlet of the movable impeller is parallel to the front edge of the inlet of the pressure expansion sheet, and the distance between the air outlet of the movable impeller and the front edge of the inlet of the pressure expansion sheet is 0.75-1.5 mm. The beneficial effect of adopting above-mentioned technical scheme is: the inclined design of the front edge of the diffuser ensures that the airflow at the air outlet of the movable impeller uniformly enters the diffuser, thereby reducing the rotationAnd (3) noise.
As shown in fig. 3, in other embodiments of the present invention, an annular boss 22 is provided on the end cap 2 under the edge of the outer circle of the lower blade of the movable impeller; the radial width of the annular boss 22 is 2-4 mm, and the distance h between the surface of the annular boss 22 and the lower blade of the movable impeller 330.3-0.6 mm. The beneficial effect of adopting above-mentioned technical scheme is: the annular boss design has reduced the minimum interval between end cover surface and the movable vane lower leaf to reduce wet dual-purpose fan's disc friction loss futilely, make and set up dry wet dual-purpose fan efficiency promotion 0.8% behind the annular boss on the end cover.
As shown in fig. 5 and 6, in another embodiment of the present invention, the number z of the diffuser holes 41 of the fan cover 42Equal to the number z of diffuser plates1The outer side wall of the diffusion hole 41 is a single circular arc, and the outer side walls of the plurality of diffusion holes 41 are distributed in a spiral radial shape. The beneficial effect of adopting above-mentioned technical scheme is: the fan cover diffusion hole is matched with the diffusion sheet to realize the two-stage flow guide diffusion of the dry and wet fan, thereby further improving the highest efficiency of the dry and wet fan.
As shown in FIGS. 5 and 6, in other embodiments of the present invention, the diffuser angle of diffuser hole 41 is the angle formed by the tangent line of the position point on the outer sidewall of the diffuser hole on the center circumference and the tangent line of the position point at the root on the arc of the outer sidewall of the diffuser hole, and the wrap angle of the outer sidewall 411 of a single diffuser hole is α1The diffusion angle of the diffusion hole is α2The angle of the outlet through hole 412 of the diffuser hole in the outer circumferential direction of the fan housing is α3Outer sidewall wrap α of the diffuser hole1＝(360/z2) 0.5 to 0.65, diffusion angle α of diffusion hole2Slightly larger than the exit angle β of the diffuser plate2，α2＝18～50°，α3＝(360/z2)-α1(ii) a Axial height h of outlet through hole of diffusion hole5Equal to the axial height h of the outlet of the diffusion sheet4The beneficial effect of adopting the technical scheme is that the angle of the outlet through hole α on the circumference of the fan cover3And a smaller angle value is adopted, so that the noise can be reduced while the integral high efficiency of the dry and wet fan is kept.
The above embodiments are only for illustrating the technical conception and the features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and the protection scope of the present invention can not be limited thereby, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.
Claims (9)
1. The efficient dry and wet dual-purpose fan is characterized by comprising a motor, a movable impeller and a fan cover, wherein the motor comprises a shell, a stator, a rotor and an end cover, the stator and the rotor are arranged in an installation cavity formed by the shell and the end cover, and the rotor is provided with a rotating shaft extending out of the end cover; the movable impeller is arranged on the end side of the end cover opposite to the rotor side, and the movable impeller is connected with a rotating shaft of the rotor; the end face of the cover body of the fan cover is provided with an air inlet, and the circumferential side face of the cover body of the fan cover is provided with a plurality of diffusion holes; the end cover is provided with a plurality of diffusion sheets on the end surface of the movable impeller side, the diffusion sheets extend to the inner side wall of the edge part of the diffusion hole on the fan cover in a single arc shape from the position of the outer circumferential air outlet of the movable impeller, the plurality of diffusion sheets are distributed in a spiral radial shape, and the end cover, the fan cover and each diffusion sheet are combined between the movable impeller air outlet and the fan cover diffusion hole to form a plurality of independent diffusion flow guide air channels.
2. The efficient wet and dry blower according to claim 1, wherein the diameter of the matching surface between the fan housing and the end cover is D1The diameter of the movable impeller is D2The outlet height of the movable impeller is h1The diameter of the inlet of the diffusion sheet is D3The inlet height h of the diffuser2The inlet angle of the diffusion sheet is β1The diameter of the outlet of the diffusion sheet is D4The outlet angle of the diffuser plate is β2The number of the leaves of the diffusion sheet is z1(ii) a Then D is3＝D2+(1.5～3)mm；D4＝D1；h2＝h1+(1～1.5)mm；D4/D3＝1.3～2；β1＝8～25°；β2＝15～40°；z1＝13～21。
3. The high efficiency wet and dry blower according to claim 2, wherein the inlet area S of the diffuser plate is defined as1The area of the outlet of the diffuser is S2Then S is2/S1＝1.2～1.8。
4. The high efficiency wet and dry blower according to claim 3, wherein the diffuser plate has an inlet leading edge top diameter D31Greater than the diameter D of the bottom32，ΔD＝D31-D321-3 mm; the air outlet of the movable impeller is parallel to the front edge of the inlet of the pressure expansion sheet, and the distance between the air outlet of the movable impeller and the front edge of the inlet of the pressure expansion sheet is 0.75-1.5 mm.
5. The efficient wet and dry fan as claimed in claim 1, wherein an annular boss is provided on the end cover under the edge of the outer circle of the lower blade of the movable impeller.
6. The efficient dry and wet dual-purpose fan as claimed in claim 5, wherein the radial width of the annular boss is 2-4 mm, and the distance h between the surface of the annular boss and the lower blade of the movable impeller3＝0.3～0.6mm。
7. The high efficiency wet and dry fan of claim 2 wherein the number z of diffuser holes in the shroud2Equal to the number z of said spreading disks1The outer side wall of the diffusion hole is in a single arc shape, and the outer side walls of the diffusion holes are distributed in a spiral radial shape.
8. The high efficiency wet and dry fan of claim 7 wherein the single diffuser hole has an outer sidewall wrap angle of α1The diffusion angle of the diffusion hole is α2The angle of the outlet through hole of the diffusion hole in the outer circumferential direction of the fan cover is α3Outside of the diffusion holeWall wrap angle α1＝(360/z2) 0.5-0.65) and a diffusion angle α of the diffusion hole2Slightly larger than the exit angle β of the diffuser plate2，α2＝18～50°，α3＝(360/z2)-α1。
9. The high efficiency wet and dry fan as set forth in claim 8, wherein the diffuser hole outlet axial height h5Equal to the axial height h of the outlet of the diffusion sheet4。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920936716.0U CN210623134U (en) | 2019-06-20 | 2019-06-20 | High-efficient wet dual-purpose fan futilely |
| PCT/CN2019/119667 WO2020253093A1 (en) | 2019-06-20 | 2019-11-20 | High-efficiency dry and wet dual-use fan |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920936716.0U CN210623134U (en) | 2019-06-20 | 2019-06-20 | High-efficient wet dual-purpose fan futilely |
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| CN210623134U true CN210623134U (en) | 2020-05-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110319038A (en) * | 2019-06-20 | 2019-10-11 | 苏州工业园区星德胜电机有限公司 | A kind of efficient Wet-dry blower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110319038A (en) * | 2019-06-20 | 2019-10-11 | 苏州工业园区星德胜电机有限公司 | A kind of efficient Wet-dry blower |
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Address after: 215000 No. 15, linbu street, Weiting street, Suzhou Industrial Park, Suzhou City, Jiangsu Province Patentee after: Xingdesheng Technology (Suzhou) Co.,Ltd. Address before: 15 linbu street, Weiting street, Suzhou Industrial Park, Jiangsu Province, 215000 Patentee before: SUZHOU INDUSTRIAL PARK SIP CINDERSON MOTOR Co.,Ltd. |