CN203272238U - Impeller, fan and snow blowing vehicle - Google Patents
Impeller, fan and snow blowing vehicle Download PDFInfo
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- CN203272238U CN203272238U CN 201320306179 CN201320306179U CN203272238U CN 203272238 U CN203272238 U CN 203272238U CN 201320306179 CN201320306179 CN 201320306179 CN 201320306179 U CN201320306179 U CN 201320306179U CN 203272238 U CN203272238 U CN 203272238U
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- impeller
- linear leaf
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- 238000007664 blowing Methods 0.000 title claims description 13
- 229920003266 Leaf® Polymers 0.000 claims description 75
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Abstract
The utility model discloses an impeller and fan and snow blower including this impeller, impeller (1) includes front shroud (2) and back shroud (3), wherein, impeller (1) is including setting up long blade (4) and short blade (7) between front shroud (2) and back shroud (3), the entry of long blade (4) is greater than the entry of short blade (7) to the distance at the center of impeller (1), the export of long blade (4) is less than the export of short blade (7) to the distance at the center of impeller (1). A gap is formed between the long blade and the short blade, airflow in the impeller flow channel can generate a high-speed jet flow through the gap, and the high-speed jet flow can take away vortex near the suction surface at the tail part of the long blade, so that the airflow condition of the impeller flow channel is improved, the airflow at the impeller outlet along the circumferential direction is uniform, and the impact of the outlet airflow on a volute of a fan is weakened.
Description
Technical field
The utility model relates to snow blowing truck, particularly, and the blower fan and the snow blowing truck that relate to a kind of impeller for the snow blowing truck blower fan and comprise this impeller.
Background technique
Snow blowing truck uses blower fan to implement the blowing snow operation usually; existing draught fan impeller can form whirlpool near the blade afterbody suction surface (non-working surface) in impeller usually when work; cause the exit flow of impeller upwards inhomogeneous in week; make exit flow produce greater impact to the spiral case of blower fan, cause the noise of blower fan larger.
The model utility content
The purpose of this utility model is to provide a kind of inhomogeneity impeller that can reduce whirlpool, improve exit flow.
To achieve these goals, the utility model provides a kind of impeller, described impeller comprises front shroud and back shroud, wherein, described impeller comprises linear leaf and the short blade that is arranged between described front shroud and back shroud, the entrance of described linear leaf arrives the distance at the center of described impeller to the distance at the center of described impeller greater than the entrance of described short blade, the distance at the center that exports to described impeller of described linear leaf is less than the distance at the center that exports to described impeller of described short blade.
Preferably, described linear leaf and described short blade are respectively a plurality of, the entrance of a plurality of described linear leafs is positioned on the first circumference that radius is R1, the entrance of a plurality of described short blades is positioned on the second circumference that radius is R2, the outlet of a plurality of described linear leafs is positioned on the 3rd circumference that radius is R3, the outlet of a plurality of described short blades is positioned on the 4th circumference that radius is R4, described the first circumference, the second circumference, the 3rd circumference and the 4th circumference have the common center of circle, and the described center of circle is passed at the center of described impeller.
Preferably, 100.4mm≤R1≤118.5mm, 0.4≤R1/R3≤0.583,0.86≤R2/R3≤0.987,0.8≤R2/R4≤1.
Preferably, a plurality of described linear leafs are circumferentially uniform along described impeller, and the outlet both sides of each described linear leaf are respectively arranged with a described short blade.
Preferably, described linear leaf is through the mid point of the arc section of the restriction of entrance on described the second circumference of two described short blades of this linear leaf both sides.
Preferably, the quantity of described linear leaf is 12-16.
Preferably, described front shroud and described back shroud limit the outlet of described impeller, and the width of described outlet is H, 0.16≤H/R4≤0.358.
Preferably, the cross section of described linear leaf comprises continuous straightway section and circular arc part, and bearing of trend and the described circular arc part of described straightway section are tangent, and the length of described straightway section is L, and the radius of described circular arc part is R5; The cross section of described short blade is arc section, and the radius of this arc section is R6.
Preferably, R5=R6,0.587≤R5/R3≤0.78,0.65≤L/R5≤0.86.
The utility model also provides a kind of blower fan, and wherein, this blower fan comprises spiral case and the impeller that is arranged in described spiral case, and described impeller is impeller of the present utility model.
The utility model also provides a kind of snow blowing truck, and wherein, this snow blowing truck comprises blower fan of the present utility model.
Pass through technique scheme, form the gap between linear leaf and short blade, air-flow in impeller channel can produce one high-speed jet by this gap, this high-speed jet can be taken away near the whirlpool linear leaf afterbody suction surface, thereby improve the airflow state of impeller channel, and then make impeller outlet even along circumferential air-flow, weakened the impact of exit flow to the spiral case of blower fan.
Other feature and advantage of the present utility model will partly be described in detail in embodiment subsequently.
Description of drawings
Accompanying drawing is to be used to provide further understanding of the present utility model, and consists of the part of specification, is used from explanation the utility model with following embodiment one, but does not consist of restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the stereogram of a kind of mode of execution of explanation impeller of the present utility model;
Fig. 2 is the plan view of internal structure that shows the impeller of Fig. 1;
Fig. 3 is the local enlarged diagram that shows the short blade of linear leaf in Fig. 2 and both sides thereof;
Fig. 4 is the sectional view of Fig. 2;
Fig. 5 is the structural representation that shows a kind of mode of execution of blower fan of the present utility model.
Description of reference numerals
1: impeller 2: front shroud 3: back shroud
4: linear leaf 5: straightway section 6: circular arc part
7: short blade 7a: the first short blade 7b: the second short blade
8: outlet 9: spiral case
R1: the radius of 2: the second circumference of the radius R of the first circumference
R3: the radius of 4: the four circumference of the radius R of the 3rd circumference
R5: the radius R 6 of circular arc part: the radius of arc section
β 1: the inlet angle β 2 of linear leaf: the exit angle of linear leaf
β 3: the inlet angle β 4 of short blade: the exit angle of short blade
AA: horizontal datum BB: vertical reference line
The outlet of 1: the first short blade of θ and the angle of vertical reference line BB
θ 2: the angle of the outlet of linear leaf and vertical reference line BB
The outlet of 3: the second short blades of θ and the angle of vertical reference line BB
H: the exit width of impeller
L: the length of straightway section
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated.Should be understood that, embodiment described herein only is used for description and interpretation the utility model, is not limited to the utility model.
In the utility model, in the situation that do not do opposite explanation, the noun of locality of use typically refers to reference to upper and lower, left and right shown in the drawings as " upper and lower, left and right "; " inside and outside " refers to inside and outside with respect to the profile of each parts itself.
According to an aspect of the present utility model, a kind of impeller is provided, described impeller 1 comprises front shroud 2 and back shroud 3, wherein, described impeller 1 comprises linear leaf 4 and the short blade 7 that is arranged between described front shroud 2 and back shroud 3, the entrance of described linear leaf 4 arrives the distance at the center of described impeller 1 to the distance at the center of described impeller 1 greater than the entrance of described short blade 7, the distance at the center that exports to described impeller 1 of described linear leaf 4 is less than the distance at the center of the described impeller 1 of exporting to of described short blade 7.
According on the other hand of the present utility model, a kind of blower fan is provided, as shown in Figure 5, wherein, this blower fan comprises spiral case 9 and the impeller 1 that is arranged in described spiral case 9, described impeller 1 is impeller of the present utility model.
In impeller 1 of the present utility model, form the gap between linear leaf 4 and short blade 7, air-flow in impeller channel can produce one high-speed jet by this gap, this high-speed jet can be taken away near the whirlpool linear leaf 4 afterbody suction surfaces, thereby improve the airflow state of impeller channel, and then make from the circumferential air-flow in the edge of outlet 8 output of impeller 1 evenly, and weakened the air-flows that exporting 8 outputs to the impact of the spiral case 9 of blower fan, reduced the noise of blower fan.
In the utility model, linear leaf 4 and short blade 7 can be arranged according to suitable separately mode, if the entrance that makes linear leaf 4 to the distance at the center of impeller 1 greater than the entrance of short blade 7 to the distance at the center that exports to impeller 1 of the distance at the center of impeller 1 and linear leaf 4 distance less than the center that exports to impeller 1 of short blade 7.In other words, in the radial direction, as long as make the outlet of short blade 7 be positioned at linear leaf 4 outlet the outside and make linear leaf 4 and short blade 7 has overlapping part, in order to form described gap.
preferably, as shown in Figure 2, described linear leaf 4 and short blade 7 are respectively a plurality of, the entrance of a plurality of described linear leafs 4 is positioned on the first circumference that radius is R1, the entrance of a plurality of described short blades 7 is positioned on the second circumference that radius is R2, the outlet of a plurality of described linear leafs 4 is positioned on the 3rd circumference that radius is R3, the outlet of a plurality of described short blades 7 is positioned on the 4th circumference that radius is R4, described the first circumference, the second circumference, the 3rd circumference and the 4th circumference have the common center of circle, the center of described impeller 1 (is the center line of impeller, this center line is for passing the straight line of the intersection point of horizontal datum AA and vertical reference line BB in Fig. 2 along vertical direction shown in Figure 2) pass the described center of circle (being the intersection point O of horizontal datum AA and vertical reference line BB in Fig. 2).
Wherein, R1＜R2, R2＜R3, R3＜R4 has lap with the outlet of guaranteeing short blade 7 between the outside radially of linear leaf 4 and linear leaf 4 and short blade 7.In addition, can appropriate design R1, R2, the size of R3, R4, to obtain optimum arrangement form.Preferably, can make 100.4mm≤R1≤118.5mm, 0.4≤R1/R3≤0.583,0.86≤R2/R3≤0.987,0.8≤R2/R4≤1.
In the utility model, linear leaf 4 and short blade 7 can be set as required, as long as can form the gap between linear leaf 4 and short blade 7 in impeller 1.For example, a plurality of described linear leafs 4 are circumferentially uniform along described impeller 1, and short blade 7 can be set in the one or both sides of a part of linear leaf 4.Preferably, as shown in Figure 2, the outlet both sides of each linear leaf 4 can be respectively arranged with a short blade 7, obtaining gap as much as possible, thereby eliminate as far as possible whirlpool.
More preferably, can make the mid point of the arc section that described linear leaf 4 limits through the entrance of two short blades 7 of this linear leaf 4 both sides on described the second circumference, so that the size in the gap between linear leaf 4 and short blade 7 is consistent as far as possible, thereby circumferentially improve equably the air-flow of output along impeller 1.
The quantity of linear leaf 4 and short blade 7 can be set in addition, as required.In the situation that the both sides of linear leaf 4 are respectively arranged with a short blade 7, the quantity of described linear leaf 4 can be 12-16.
In addition, described front shroud 2 and back shroud 3 limit the outlet 8 of described impeller 1, and as shown in Figure 4, the width of described outlet 8 is H, and 0.16≤H/R4≤0.358 is so that impeller 1 can provide suitable flow and pressure.
In addition, linear leaf 4 and short blade 7 can form various suitable shapes.For example, in the illustrated embodiment, with reference to figure 3, the cross section of described linear leaf 4 comprises continuous straightway section 5 and circular arc part 6, and described straightway section 5 is tangent with described circular arc part 6, and the length of described straightway section 5 is L, and the radius of described circular arc part 6 is R5; The cross section of described short blade 7 is arc section, and the radius of this arc section is R6.Selectively, linear leaf 4 and short blade 7 also can form other shapes, and for example the cross section of linear leaf 4 comprises the curved section of straightway section and other shapes, and the cross section of short blade 7 also can comprise the curved section of other shapes.
In addition, linear leaf 4 and short blade 7 can be set to have suitable size, with the beneficial effect that obtains to optimize.In mode of execution shown in Figure 3, preferably, R5=R6,0.587≤R5/R3≤0.78,0.65≤L/R5≤0.86.
Particularly, in the illustrated embodiment, the quantity of linear leaf 4 is 16, and the both sides of each linear leaf 4 are respectively arranged with a short blade 7.Linear leaf 4 that the below specifically illustrates with Fig. 3 and the first short blade 7a and the second short blade 7b of both sides thereof illustrate, wherein, linear leaf 4 is positioned at horizontal datum AA top, and vertical reference line BB in the most close Fig. 3.
As shown in Figure 3, the mid point of the arc section that limits on the second circumference through the entrance that is positioned at the first short blade 7a and the second short blade 7b of linear leaf 4.wherein, the inlet angle of linear leaf 4 (being that the ingress of the straightway of linear leaf 4 and linear leaf 4 is at the tangential angle of the first circumference) is β 1, the exit angle of linear leaf 4 (be the outlet port of linear leaf 4 in tangential and this outlet port of arc section at the tangential angle of the 3rd circumference) is β 2, the inlet angle of short blade (being the first short blade 7a in figure) (i.e. the ingress of the first short blade 7a in tangential and this ingress of its arc section at the tangential angle of the second circumference) is β 3, the exit angle of short blade (being the first short blade 7a in figure) (i.e. the outlet port of the first short blade 7a in tangential and this outlet port of its arc section at the tangential angle of the 4th circumference) is β 4.Wherein, 22.7 °≤β is 1≤32.5 °; 108.4 °≤2≤120 ° of β; 3≤110.8 ° of 100 °≤β; 4≤138.8 ° of 120 °≤β.In addition, the angle of the outlet of the first short blade 7a and vertical reference line BB (being the line in outlet port of center of circle O and the first short blade 7a and the angle of vertical reference line BB) is θ 1, the angle of the outlet of linear leaf 4 and vertical reference line BB (being the line in outlet port of center of circle O and linear leaf 4 and the angle of vertical reference line BB) is θ 3 for the angle of the outlet of θ 2, the second short blade 7b and vertical reference line BB (being the line in outlet port of center of circle O and the second short blade 7b and the angle of vertical reference line BB).Wherein, 1.6 °≤θ is 1≤5.8 °; 0.46≤θ 1/ θ 2≤0.73; 2.2≤θ 3/ θ 2≤4.2.
In addition, the utility model also provides a kind of snow blowing truck, and wherein, this snow blowing truck comprises blower fan of the present utility model.Owing to forming the gap between linear leaf 4 and short blade 7, air-flow in impeller channel can produce high-speed jet and take away near blade afterbody suction surface whirlpool by high-speed jet by this gap, thereby improve the airflow state of impeller channel, and then make from the circumferential air-flow in the edge that the outlet 8 of impeller is exported even, thereby weakened export 8 outputs air-flows to the impact that the spiral case 9 of blower fan causes, reduced the noise of blower fan.
Below describe by reference to the accompanying drawings preferred implementation of the present utility model in detail; but; the utility model is not limited to the detail in above-mentioned mode of execution; in technical conceive scope of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
Need to prove that in addition each the concrete technical characteristics described in above-mentioned embodiment in reconcilable situation, can make up by any suitable mode.For fear of unnecessary repetition, the utility model is to the explanation no longer separately of various possible compound modes.
In addition, also can carry out combination in any between various mode of execution of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (11)
1. impeller, described impeller (1) comprises front shroud (2) and back shroud (3), it is characterized in that, described impeller (1) comprises linear leaf (4) and the short blade (7) that is arranged between described front shroud (2) and back shroud (3), the entrance of described linear leaf (4) arrives the distance at the center of described impeller (1) to the distance at the center of described impeller (1) greater than the entrance of described short blade (7), the distance at the center that exports to described impeller (1) of described linear leaf (4) is less than the distance at the center that exports to described impeller (1) of described short blade (7).
2. impeller according to claim 1, it is characterized in that, described linear leaf (4) and described short blade (7) are respectively a plurality of, the entrance of a plurality of described linear leafs (4) is positioned on the first circumference that radius is R1, the entrance of a plurality of described short blades (7) is positioned on the second circumference that radius is R2, the outlet of a plurality of described linear leafs (4) is positioned on the 3rd circumference that radius is R3, the outlet of a plurality of described short blades (7) is positioned on the 4th circumference that radius is R4, described the first circumference, the second circumference, the 3rd circumference and the 4th circumference have the common center of circle, the described center of circle is passed at the center of described impeller (1).
3. impeller according to claim 2, is characterized in that, 100.4mm≤R1≤118.5mm, 0.4≤R1/R3≤0.583,0.86≤R2/R3≤0.987,0.8≤R2/R4≤1.
4. impeller according to claim 3, is characterized in that, a plurality of described linear leafs (4) are circumferentially uniform along described impeller (1), and the outlet both sides of each described linear leaf (4) are respectively arranged with a described short blade (7).
5. impeller according to claim 4, is characterized in that, described linear leaf (4) is through the mid point of the arc section of the restriction of entrance on described the second circumference of two described short blades (7) of this linear leaf (4) both sides.
6. impeller according to claim 5, is characterized in that, the quantity of described linear leaf (4) is 12-16.
7. impeller according to claim 3, is characterized in that, described front shroud (2) and described back shroud (3) limit the outlet (8) of described impeller (1), and the width of described outlet (8) is H, 0.16≤H/R4≤0.358.
8. the described impeller of any one according to claim 2-7, it is characterized in that, the cross section of described linear leaf (4) comprises continuous straightway section (5) and circular arc part (6), the bearing of trend of described straightway section (5) and described circular arc part (6) are tangent, the length of described straightway section (5) is L, and the radius of described circular arc part (6) is R5; The cross section of described short blade (7) is arc section, and the radius of this arc section is R6.
9. impeller according to claim 8, is characterized in that, R5=R6,0.587≤R5/R3≤0.78,0.65≤L/R5≤0.86.
10. a blower fan, is characterized in that, this blower fan comprises spiral case (9) and be arranged on impeller (1) in described spiral case (9), and described impeller (1) is the described impeller of any one according to claim 1-9.
11. a snow blowing truck is characterized in that this snow blowing truck comprises blower fan according to claim 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320306179 CN203272238U (en) | 2013-05-30 | 2013-05-30 | Impeller, fan and snow blowing vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320306179 CN203272238U (en) | 2013-05-30 | 2013-05-30 | Impeller, fan and snow blowing vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203272238U true CN203272238U (en) | 2013-11-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320306179 Expired - Lifetime CN203272238U (en) | 2013-05-30 | 2013-05-30 | Impeller, fan and snow blowing vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203272238U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111946664A (en) * | 2020-09-16 | 2020-11-17 | 台州学院 | Centrifugal fan blade with slotting structure |
| CN112196909A (en) * | 2020-09-16 | 2021-01-08 | 江苏大学 | Air-cooled cylinder type coupler |
-
2013
- 2013-05-30 CN CN 201320306179 patent/CN203272238U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111946664A (en) * | 2020-09-16 | 2020-11-17 | 台州学院 | Centrifugal fan blade with slotting structure |
| CN112196909A (en) * | 2020-09-16 | 2021-01-08 | 江苏大学 | Air-cooled cylinder type coupler |
| CN112196909B (en) * | 2020-09-16 | 2021-08-27 | 广东力科泵业科技有限公司 | Air-cooled cylinder type coupler |
| CN111946664B (en) * | 2020-09-16 | 2022-03-15 | 台州学院 | Centrifugal fan blade with slotting structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170619 Address after: 410000 Hunan province Changsha hi tech Development Zone, Lin Yulu No. 288 Patentee after: ZOOMLION ENVIRONMENTAL INDUSTRY Co.,Ltd. Address before: 410013 Yuelu District, Hunan, silver basin Road, No. 361, No. Patentee before: ZOOMLION HEAVY INDUSTRY SCIENCE&TECHNOLOGY Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131106 |