CN220227283U - Multi-duct multi-air-outlet centrifugal fan - Google Patents
Multi-duct multi-air-outlet centrifugal fan Download PDFInfo
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- CN220227283U CN220227283U CN202321954683.5U CN202321954683U CN220227283U CN 220227283 U CN220227283 U CN 220227283U CN 202321954683 U CN202321954683 U CN 202321954683U CN 220227283 U CN220227283 U CN 220227283U
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- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000003381 stabilizer Substances 0.000 claims 1
- 238000009423 ventilation Methods 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 description 4
- 230000004075 alteration Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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Abstract
The utility model provides a multi-air-channel multi-air-outlet centrifugal fan, which comprises a volute and an impeller arranged in the volute, wherein the impeller is arranged in the volute; the spiral case comprises a front vertical plate, a rear vertical plate, at least two spiral flow dividing plates, a spiral case shell plate and fixing support legs, wherein the outer side areas of the impeller are positioned between the front vertical plate and the rear vertical plate and perpendicular to the front vertical plate and the rear vertical plate, the spiral case shell plate is positioned between the outer edges of the front vertical plate and the rear vertical plate, and the fixing support legs are connected with the bottoms of the front vertical plate and the rear vertical plate. Adjacent spiral flow dividing plate and spiral case shell board separate into different wind channels with the fan wind chamber, set up a plurality of air outlets corresponding with each wind channel on the shell board, can be under the prerequisite of effective control centrifugal fan size, the amount of wind and the wind pressure of each air outlet can be adjusted according to actual demand, guarantee that the amount of wind of many air outlets, wind pressure are even or inhomogeneous controlled, satisfy the air supply plant protection atomizer requirement, the suitability is strong, can have bigger delivery amount of wind and farther range through centrifugal wind channel, coverage area is big, ventilation efficiency is high.
Description
Technical Field
The utility model belongs to the technical field of centrifugal fans, and relates to a multi-air-channel multi-air-outlet centrifugal fan.
Background
At present, a fan adopted by air-assisted plant protection spraying in the domestic agricultural machinery industry is mainly an axial flow fan, and has the defects of medium air quantity and low air pressure, and cannot meet the application requirements of large air quantity and high air pressure; if the traditional centrifugal fan is adopted, the problems of super high height, poor trafficability, small air delivery angle and the like of the sprayer can be caused, and the uniformity and adaptability adjustment difficulty of the air quantity and the air direction are great, so that the novel air delivery type plant protection sprayer is difficult to be directly applied to low air delivery type plant protection sprayer products required in hilly and mountain areas.
Disclosure of Invention
The utility model aims to provide a novel centrifugal fan which has small external dimension, large air quantity, high air pressure, large air delivery angle, multiple air channels, multiple air outlets and controllable air outlet.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the utility model provides a many air ducts multi-outlet centrifugal fan, the fan includes spiral case and sets up the impeller in the spiral case; the spiral case comprises a front vertical plate, a rear vertical plate, at least two spiral flow dividing plates, a spiral case shell plate and fixing support legs, wherein the outer side areas of the impeller are positioned between the front vertical plate and the rear vertical plate and perpendicular to the front vertical plate and the rear vertical plate, the spiral case shell plate is positioned between the outer edges of the front vertical plate and the rear vertical plate, and the fixing support legs are connected with the bottoms of the front vertical plate and the rear vertical plate. The adjacent spiral splitter plate and the spiral casing plate divide the fan air cavity into different air channels, and a plurality of air outlets corresponding to the air channels are arranged on the casing plate.
Further, the spiral splitter plate and the volute casing plate are gradually and centrifugally opened outwards along the rotation direction of the impeller.
Further, the volute casing plate is used as a component part of the shape of the fan, and can be simplified into an arc shape or a straight line shape in an approximate segmentation manner for the convenience of processing and production.
Further, the air outlets are symmetrically arranged in a left-right opposite mode along the center of the fan impeller.
Further, the inner side splitter plates of the left air duct and the right air duct are arranged on a straight line close to the initial volute tongue position of the fan impeller and the center of the impeller, and the included angle beta between the straight line and the horizontal line is 20-40 degrees.
Further, the outside flow dividing plates of the left and right air channels extend along the spiral line to be terminated at the position close to the first air outlet of the air channel, and the distance between the end points of the left and right flow dividing plates and the outer edge of the impeller, namely the opening degree of the air channel, is equal.
Further, the distance between the end points of the outer side flow dividing plates of the left air channel and the right air channel and the outer edge of the impeller, namely the opening degree of the air channel outlet, can be set to be unequal according to requirements.
The utility model has the beneficial effects that: (1) The utility model can meet the use requirement of a small plant protection sprayer, can adjust the air quantity and the air pressure of each air outlet according to actual requirements on the premise of effectively controlling the size of the centrifugal fan, ensures that the air quantity and the air pressure of a plurality of air outlets are uniformly or unevenly controlled, meets the requirement of the air-fed plant protection sprayer, and has strong applicability. (2) The centrifugal air duct can have larger carrying air quantity and longer range, and has large coverage area and high ventilation efficiency.
Drawings
FIG. 1 is a front view of a multi-duct multi-outlet centrifugal fan structure of the present utility model;
FIG. 2 is a side view of a multi-duct multi-outlet centrifugal fan structure of the present utility model;
fig. 3 is a schematic view of a modified structure of a linear volute casing plate of the present utility model.
Description of the embodiments
In order to make the utility model more comprehensible, embodiments accompanied with figures are described in detail below. It should be understood that these examples are for illustrative purposes only.
The utility model provides a multi-air-outlet centrifugal fan with multiple air outlets, which is suitable for an air-fed plant protection sprayer, as shown in fig. 1 and 2. In this embodiment, the air-assisted spraying machine is taken as an example to further describe that after the air-assisted plant protection spraying machine is applied to the air-assisted spraying machine, the fan of the utility model comprises a volute 1 and an impeller 2 arranged in the volute, wherein the volute 1 comprises a front vertical plate 3, a rear vertical plate 4, at least two spiral flow dividing plates 5, an arc-shaped or linear volute casing plate 6 and fixing support legs 7, the at least two spiral flow dividing plates 5 are arranged between the front vertical plate and the rear vertical plate in the outer side area of the impeller and are perpendicular to the front vertical plate and the rear vertical plate, and the fixing support legs 7 are connected with the bottoms of the front vertical plate and the rear vertical plate. The spiral splitter plate 5 is gradually opened along the rotation direction of the impeller, namely, the distance between the splitter plate 5 and the outer edge of the impeller 2 is changed from small to large, and the adjacent splitter plate 5, splitter plate 5 and volute casing plate 6 divide the fan air cavity into a plurality of different air channels 8.
Preferably, a plurality of air outlets 9 are arranged at corresponding positions on the volute casing plate 6 according to the number and arrangement of the spray heads of the plant protection sprayer.
Preferably, the air outlets 9 can be symmetrically arranged left and right along the shell plate 6, and can be uniformly distributed or non-uniformly distributed according to requirements.
Preferably, in order to ensure the symmetry uniformity of left and right air outlets of the plant protection sprayer, the position of the left and right air duct splitter plates, which is close to the initial volute tongue of the fan impeller, is arranged on a straight line with the center of the impeller so as to ensure that the air quantity of the fan in the two air ducts is equal and the air pressure is equal. The included angle between the straight line and the horizontal line or the bottom edge of the fixed support leg 7 is beta, and the included angle beta ranges from 20 degrees to 40 degrees.
Preferably, in order to ensure the symmetry uniformity of left and right air outlets of the plant protection sprayer, the splitter plates of the left and right air channels are extended along the spiral line to be terminated at the position close to the first air outlet of the air channel, and the distance between the end point of the splitter plates and the outer edge of the impeller, namely the opening degrees L1 and L2 of the air channel outlets, are equal.
Preferably, in order to ensure the adaptability of the plant protection sprayer to the left and right air outlets, the distances between the end points of the flow dividing plates of the left and right air channels and the outer edges of the impellers, namely the opening degrees L1 and L2 of the air channels, can be set to be unequal according to requirements.
The multi-air-channel multi-air-outlet centrifugal fan disclosed by the utility model adopts the fan volute with multiple air channels, is matched with the rotation of impellers, forms multiple centrifugal air channels under the action of centrifugal force, and finally flows to the air outlets, so that the uniform or nonuniform and controllable air outlet of the sprayer fan is realized, and the requirements of air conveying distance and air conveying height are met on the premise of meeting the passing height of a sprayer. Various modifications and alterations of this utility model will be apparent to those skilled in the art, and it is intended to cover such modifications and alterations without departing from the principles and techniques employed in this utility model.
Claims (7)
1. The utility model provides a many air ducts multi-air outlet centrifugal fan, its characterized in that, the fan includes spiral case (1) and sets up impeller (2) in spiral case (1), spiral case shell board (6) and the fixed stabilizer blade (7) of riser bottom connection around, adjacent division board (5) and spiral case shell board (6) separate into different wind channel (8) with the fan wind chamber in spiral case shell board (5) between the riser around the polylith perpendicular to between riser around, impeller (2) outside region are located.
2. The multi-air-channel multi-air-outlet centrifugal fan according to claim 1, wherein the splitter plate (5) and the volute casing plate (6) are gradually spirally and centrifugally opened along the rotation direction of the impeller (2), namely, the opening distance between the splitter plate (5), the volute casing plate (6) and the outer edge of the impeller (2) is gradually increased from small to large.
3. The multi-duct multi-outlet centrifugal fan according to claim 1, wherein the volute casing plate (6) is used as a component of the volute shape of the fan, and can be continuously segmented and simplified into an arc shape or a straight line shape for convenient processing and production.
4. A multi-duct multi-outlet centrifugal fan according to claim 3, characterized in that a plurality of outlets (9) corresponding to the multi-duct (8) are provided on the casing plate (6).
5. A multi-duct multi-outlet centrifugal fan according to claim 4, wherein the duct (8) and the outlet (9) are symmetrically arranged around the centre of the fan wheel (2).
6. A multi-duct multi-outlet centrifugal fan according to claim 1, wherein the splitter plates (5) of the left and right ducts are arranged on a straight line with the center of the impeller close to the initial volute tongue of the fan impeller, and the included angle β between the straight line and the horizontal line is in the range of 20-40 °.
7. The multi-duct multi-outlet centrifugal fan according to claim 6, wherein the outer side splitter plates (5) of the left and right ducts are extended along a spiral line to terminate near the first outlet of the duct to form the duct outlet opening; when the air output of the left air channel and the air output of the right air channel are required to be equal, the distance between the end point of the outer side splitter plate (5) of the left air channel and the outer side splitter plate of the right air channel and the outer edge of the impeller, namely the opening degree L1 and the opening degree L2 of the air channel, are required to be equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321954683.5U CN220227283U (en) | 2023-07-25 | 2023-07-25 | Multi-duct multi-air-outlet centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321954683.5U CN220227283U (en) | 2023-07-25 | 2023-07-25 | Multi-duct multi-air-outlet centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220227283U true CN220227283U (en) | 2023-12-22 |
Family
ID=89173979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321954683.5U Active CN220227283U (en) | 2023-07-25 | 2023-07-25 | Multi-duct multi-air-outlet centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220227283U (en) |
-
2023
- 2023-07-25 CN CN202321954683.5U patent/CN220227283U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240914 Address after: Building 6, Wurui Entrepreneurship Park, No. 288.366 Jingbian Road, Balidian Town, Wuxing District, Huzhou City, Zhejiang Province, China 313002 Patentee after: Xiaogeng Intelligent Robot (Zhejiang) Co.,Ltd. Country or region after: China Address before: 200949 Room 101, 1st Floor, Building 4, No. 1438 Jinshao Road, Baoshan District, Shanghai Patentee before: Xiaogeng Intelligent Technology (Shanghai) Co.,Ltd. Country or region before: China |
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| TR01 | Transfer of patent right |