CN215805280U - Four-stage counter-rotating axial-flow fan and ventilation system - Google Patents
Four-stage counter-rotating axial-flow fan and ventilation system Download PDFInfo
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- CN215805280U CN215805280U CN202022653483.9U CN202022653483U CN215805280U CN 215805280 U CN215805280 U CN 215805280U CN 202022653483 U CN202022653483 U CN 202022653483U CN 215805280 U CN215805280 U CN 215805280U
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- 238000009423 ventilation Methods 0.000 title claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims description 21
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims 1
- 235000017491 Bambusa tulda Nutrition 0.000 claims 1
- 241001330002 Bambuseae Species 0.000 claims 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims 1
- 239000011425 bamboo Substances 0.000 claims 1
- 238000001816 cooling Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
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Abstract
The utility model discloses a four-stage counter-rotating axial-flow fan and a ventilation system, and belongs to the technical field of mechanical devices. The ventilator comprises a shell, an air inlet cylinder and an air outlet cylinder which are respectively positioned on two sides of the shell, and further comprises a first power source and a second power source which are positioned in the shell, wherein the first power source is connected with a first speed changer; the second power source is connected with a second speed changer, a third power shaft and a fourth power shaft which rotate coaxially and reversely are arranged on the second speed changer, the third power shaft is connected with a third impeller, the fourth power shaft is connected with a fourth impeller, and the third impeller and the fourth impeller are positioned on the same side of the second speed changer and are close to the air outlet barrel. The impeller improves the air volume and the air pressure of the ventilator by increasing the number of the impeller, and the air supply distance is increased.
Description
Technical Field
The utility model relates to a ventilator, belongs to the technical field of mechanical devices, and particularly relates to a four-stage counter-rotating axial-flow ventilator and a ventilation system.
Background
The ventilator is a machine which increases the pressure of gas and discharges the gas by means of input mechanical energy, and is a driven fluid machine. Ventilators are widely used for ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, ventilation and draught of boilers and industrial furnaces, cooling and ventilation in air conditioning equipment and household electrical appliances, drying and sorting of grains, wind tunnel wind sources, inflation and propulsion of air cushion boats, and the like.
The contra-rotating axial-flow ventilator converts mechanical energy into gas pressure and kinetic energy through a pair of impellers which rotate in opposite directions, and has the characteristics of high efficiency, high pressure head and low noise.
The chinese utility model patent (grant No. CN2777249Y, grant No. 2006-5-3) discloses a multistage double-speed contra-rotating axial flow type local ventilator, which comprises two stages, three stages or four stages or even more stages of adjacent impellers respectively mounted in adjacent two-stage cylinders, and a double-speed motor is used as a motor for driving the rotation of the impellers, and the impellers of the contra-rotating fan respectively driven by the double-speed motor are mounted on the same axis, thereby realizing the combination of various stages and rotating speeds. However, the above ventilator needs a two-speed motor for each driving impeller, and the structure is complicated in actual installation, which causes inconvenience in use.
Disclosure of Invention
In order to solve the technical problem, the utility model provides a four-stage counter-rotating axial-flow fan and a ventilation system. The ventilator has the advantages of large ventilation volume and convenient installation of the internal structure.
In order to achieve the purpose, the utility model discloses a four-stage contra-rotating axial-flow fan, which comprises a shell, an air inlet cylinder and an air outlet cylinder, wherein the air inlet cylinder and the air outlet cylinder are respectively positioned at two sides of the shell;
the second power source is connected with a second speed changer, a third power shaft and a fourth power shaft which rotate coaxially and reversely are arranged on the second speed changer, the third power shaft is connected with a third impeller, the fourth power shaft is connected with a fourth impeller, and the third impeller and the fourth impeller are located on the same side of the second speed changer and are close to the air outlet barrel.
Further, the first impeller and the second impeller are arranged between the first transmission and the second power source.
Further, the third impeller and the fourth impeller are located between the second speed changer and the air outlet cylinder.
Furthermore, a first coupling is arranged between the first power source and the first transmission, and a second coupling is arranged between the second power source and the second transmission.
Furthermore, the same gear device is arranged in the first transmission and the second transmission, and the gear device drives two coaxially arranged power shafts to rotate reversely.
Further, the first power source and the second power source are both connected to a wire box, which is located outside the housing.
Further, the first power source and the second power source are both motors, the motors are single-speed motors or multi-speed motors, and when the motors are single-speed motors, the variable-frequency speed regulating device is added.
Furthermore, the first power shaft is in key joint with the first impeller, the second power shaft is in key joint with the second impeller, the third power shaft is in key joint with the third impeller, and the fourth power shaft is in key joint with the fourth impeller.
In order to better achieve the technical purpose of the utility model, the utility model also discloses a ventilation system which comprises the ventilator.
Has the advantages that:
the utility model discloses a ventilator, which realizes the counter rotation of wind directions by controlling four impellers by two power sources, wherein two impellers are arranged close to an air outlet cylinder, and the other two impellers are far away from an air inlet cylinder; in addition, the mode that two power sources are opened simultaneously or not simultaneously can be adopted, control on different ventilation volume requirements is achieved, and the ventilator designed by the utility model has a good application prospect in the fields of mine underground ventilation and tunnel ventilation.
Drawings
FIG. 1 is a left side view of a fan of the present invention;
FIG. 2 is a front view of the ventilator of FIG. 1;
FIG. 3 is a partial cross-sectional view of the transmission of FIG. 2;
wherein, the numbering of each part in the above-mentioned figure is as follows:
a housing 1 (inner housing 1a, outer housing 1 b);
a lifting lug 2;
a ground margin 3;
an air inlet drum 4;
an air outlet cylinder 5;
a filter screen 6;
a dome 7;
a first power source 8;
a second power source 9;
a first transmission 10 (a power shaft one 10.1, a power shaft two 10.2, a gear one 10.3 (wherein, the first gear one 10.3a, the nth gear one 10.3b), a gear two 10.4 (wherein, the (n +/-1) th gear two 10.4a, the first gear two 10.4 b));
a second transmission 11 (power shaft three 11.1, power shaft four 11.2);
a first impeller 13;
a second impeller 12;
a third impeller 15;
a fourth impeller 14;
a first coupling 16;
a second coupling 17;
a wire box 18;
a flange 19.
Detailed Description
The utility model discloses a four-stage contra-rotating axial-flow fan, which comprises a shell 1 enclosed by an inner shell 1a and an outer shell 1b, wherein the inner shell 1a and the outer shell 1b are fixedly connected through a flange 19, a lifting lug 2 and a wire box 18 are arranged at the top end of the outer side of the shell 1, and a foot margin 3 is arranged at the bottom end of the outer side of the shell 1, as shown in figure 1.
As can be seen from fig. 2, an air inlet cylinder 4 and an air outlet cylinder 5 are respectively arranged at the left end and the right end of the outer shell 1b, a filter screen 6 and a dome 7 are arranged in the air inlet cylinder 4, and a dome 7 is also arranged in the air outlet cylinder 5; wherein the filter screen 6 is used for preventing overlarge foreign matters from entering the interior of the ventilator to damage the impeller.
Meanwhile, be located between air inlet cylinder 4, the play dryer 5 still be equipped with two power supplies in the casing 1, like first power supply 8 and second power supply 9, the power supply is the motor, and simultaneously, this motor is multispeed motor or single-speed motor plus variable frequency speed control device, thereby the purpose of adopting multispeed motor or single-speed motor plus variable frequency speed control device is realized adjusting the ventilation blower rotational speed and adjusting its flow and wind pressure.
The first power source 8 is connected with a first speed changer 10, a first power shaft 10.1 and a second power shaft 10.2 which coaxially and reversely rotate are arranged on the first speed changer 10, the first power shaft 10.1 is connected with a first impeller 13, the second power shaft 10.2 is connected with a second impeller 12, and the first impeller 13 and the second impeller 12 are positioned on the same side of the first speed changer 10 and far away from the air inlet barrel 4; the second power source 9 is connected with a second speed changer 11, a third power shaft 11.1 and a fourth power shaft 11.2 which rotate coaxially and reversely are arranged on the second speed changer 11, a third impeller 14 is connected with the third power shaft 11.1, a fourth impeller 14 is connected with the fourth power shaft 11.2, and the third impeller 15 and the fourth impeller 14 are positioned on the same side of the second speed changer 11 and are close to the air outlet barrel 5. The first impeller 13 and the second impeller 12 are disposed between the first transmission 10 and the second power source 9. The third impeller 15 and the fourth impeller 14 are located between the second speed changer 11 and the air outlet cylinder 5. The first impeller 13 and the second impeller 12 can be arranged close to the air inlet cylinder, and the third impeller 15 and the fourth impeller 14 can be arranged close to the air outlet cylinder, although not shown in the drawings, the arrangement mode of the impellers can increase the air supply distance of the fan within the protection scope of the utility model.
In order to ensure the smooth connection between each power source and each transmission, a first coupling 16 is arranged between the first power source 8 and the first transmission 10, and a second coupling 17 is arranged between the second power source 9 and the second transmission 11.
The first transmission 10 and the second transmission 11 are provided with the same gear device, and the gear device drives two coaxially arranged power shafts to rotate reversely.
Specifically, referring to fig. 3, taking the first transmission 10 as an example, n gears 10.3 and (n ± 1) gears 10.4 are disposed between the power shaft one 10.1 and the power shaft two 10.2, where n is a positive integer greater than 1, where a first gear 10.3a is fixed on the first power shaft 10.1, a (n ± 1) th gear 10.4a is fixed on the second power shaft 10.2, an nth gear 10.3b and a first gear 10.4b are fixed on the same shaft, gear teeth of the gears one 10.3 are engaged with each other, and gear teeth of the gears two 10.4 are engaged with each other. And the first gear 10.3 and the second gear 10.4 are cylindrical gears.
Fig. 3 of the present invention shows three gears one 10.3 and two gears two 10.4 in each transmission, but the scope of the present invention is not limited to this number.
In order to ensure the smooth meshing of the first power shaft 10.1, the second power shaft 10.2, the third power shaft 11.1, the fourth power shaft 11.2 and all gears, a bearing is arranged between the outer side of the first power shaft 10.1 and the inner side of the second power shaft 10.2; a bearing is arranged between the outer side of the third power shaft 11.1 and the inner side of the fourth power shaft 11.2; bearings are also arranged between each gear and the gear shaft thereof, each bearing comprises a rolling bearing but is not limited to a rolling bearing, and the connection mode between each bearing and each shaft is a detachable connection mode such as key connection and the like or a non-detachable fixed connection and the like.
Meanwhile, each motor and each speed changer are fixed inside the shell through the support frames connected with each other.
Therefore, the ventilator designed by the utility model has the advantages of large air volume, compact layout and practical application value.
In addition, the utility model also discloses a ventilation system, which adopts the ventilator designed by the utility model, can simultaneously realize the control requirements of large and small air volume, and is convenient to use.
The above examples are merely preferred examples and are not intended to limit the embodiments of the present invention. In addition to the above embodiments, the present invention has other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, the meaning of "one or more" includes 1 unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Claims (9)
1. The utility model provides a level four counter-rotating axial-flow fan, it includes casing (1), is located respectively the air inlet section of thick bamboo (4), play dryer (5) of casing (1) both sides, its characterized in that: the air inlet device is characterized by further comprising a first power source (8) and a second power source (9) which are located in the shell (1), wherein the first power source (8) is connected with a first speed changer (10), a first power shaft (10.1) and a second power shaft (10.2) which coaxially rotate in opposite directions are arranged on the first speed changer (10), the first power shaft (10.1) is connected with a first impeller (13), the second power shaft (10.2) is connected with a second impeller (12), and the first impeller (13) and the second impeller (12) are located on the same side of the first speed changer (10) and are far away from the air inlet drum (4);
second derailleur (11) is connected in second power supply (9), be equipped with coaxial reverse rotation's power axle three (11.1), power axle four (11.2) on second derailleur (11), third impeller (15) is connected in power axle three (11.1), fourth impeller (14) is connected in power axle four (11.2), third impeller (15), fourth impeller (14) are located second derailleur (11) homonymy just is close to play dryer (5) sets up.
2. A four-stage counter-rotating axial flow fan according to claim 1, wherein: the first impeller (13) and the second impeller (12) are arranged between the first transmission (10) and the second power source (9).
3. A four-stage counter-rotating axial flow fan according to claim 1, wherein: the third impeller (15) and the fourth impeller (14) are positioned between the second speed changer (11) and the air outlet cylinder (5).
4. A four-stage counter-rotating axial-flow fan according to any one of claims 1 to 3, wherein: a first coupling (16) is arranged between the first power source (8) and the first transmission (10), and a second coupling (17) is arranged between the second power source (9) and the second transmission (11).
5. A four-stage counter-rotating axial-flow fan according to any one of claims 1 to 3, wherein: the first transmission (10) and the second transmission (11) are internally provided with the same gear device, and the gear device drives two coaxially arranged power shafts to rotate reversely.
6. A four-stage counter-rotating axial-flow fan according to any one of claims 1 to 3, wherein: the first power source (8) and the second power source (9) are both connected with a wire box (18), and the wire box (18) is positioned outside the shell (1).
7. A four-stage counter-rotating axial-flow fan according to any one of claims 1 to 3, wherein: the first power source (8) and the second power source (9) are both motors, the motors are single-speed motors or multi-speed motors, and when the motors are single-speed motors, a variable-frequency speed regulating device is added.
8. A four-stage counter-rotating axial-flow fan according to any one of claims 1 to 3, wherein: the first power shaft (10.1) is in key joint with the first impeller (13), the second power shaft (10.2) is in key joint with the second impeller (12), the third power shaft (11.1) is in key joint with the third impeller (15), and the fourth power shaft (11.2) is in key joint with the fourth impeller (14).
9. A ventilation system comprising a ventilator as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022653483.9U CN215805280U (en) | 2020-11-16 | 2020-11-16 | Four-stage counter-rotating axial-flow fan and ventilation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022653483.9U CN215805280U (en) | 2020-11-16 | 2020-11-16 | Four-stage counter-rotating axial-flow fan and ventilation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215805280U true CN215805280U (en) | 2022-02-11 |
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ID=80124439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022653483.9U Active CN215805280U (en) | 2020-11-16 | 2020-11-16 | Four-stage counter-rotating axial-flow fan and ventilation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215805280U (en) |
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2020
- 2020-11-16 CN CN202022653483.9U patent/CN215805280U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240617 Address after: 810, 8th Floor, Building 10, Courtyard 1, Tianxing Street, Fangshan District, Beijing, 102400 Patentee after: Beijing Zhichanhui Technology Co.,Ltd. Country or region after: China Address before: 432000 No. 272 traffic Avenue, Hubei, Xiaogan Patentee before: HUBEI ENGINEERING University Country or region before: China |