CN215058281U - Contra-rotating axial-flow fan with bevel gear transmission impellers arranged on different sides - Google Patents
Contra-rotating axial-flow fan with bevel gear transmission impellers arranged on different sides Download PDFInfo
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- CN215058281U CN215058281U CN202022655146.3U CN202022655146U CN215058281U CN 215058281 U CN215058281 U CN 215058281U CN 202022655146 U CN202022655146 U CN 202022655146U CN 215058281 U CN215058281 U CN 215058281U
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Abstract
The utility model discloses a counter-rotating axial-flow fan that bevel gear drive impeller heteropleural side was arranged belongs to ventilation unit technical field. The air inlet cylinder and the air outlet cylinder are respectively positioned at the left end and the right end of the shell, the air inlet cylinder and the air outlet cylinder are also respectively positioned at the outer side of the shell, the air inlet cylinder and the air outlet cylinder are connected with couplers of the two power sources, each coupler is respectively connected with a bevel gear transmission device, each bevel gear transmission device is provided with two coaxial reverse rotating power output shafts, each power output shaft is respectively connected with one impeller and forms a group, each group of impellers is positioned at the same side of the corresponding bevel gear transmission device, and all the impellers are arranged close to each other. The ventilator has the advantages of high air volume, high air pressure and compact layout, and has practical application value.
Description
Technical Field
The utility model relates to a ventilation blower belongs to ventilation unit technical field, specifically relates to a counter-rotating axial-flow type ventilation blower that bevel gear drive impeller heteropleural was arranged.
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 (application publication No. CN211174704U, application publication No. 2020-08-04) discloses an axial-flow ventilator and a ventilation system with an external power source, the ventilator comprises an outer cylinder, an inner cylinder, a transmission and two impellers inside the inner cylinder, and a power source outside the outer cylinder, the transmission comprises a power input shaft inside a transmission box, a first power output shaft, a second power output shaft and a bevel gear device, the power source is connected with the power input shaft, the power input shaft transmits power to the first power output shaft and the second power output shaft coaxially arranged through the bevel gear device, the first power output shaft is connected with the first impeller, the second power output shaft is connected with the second impeller, and the steering direction of the first impeller is opposite to that of the second impeller. This ventilation unit has improved the availability factor of ventilation blower on the one hand through adopting the impeller that rotates two opposite directions to arrange the mode closely, and on the other hand the power supply is arranged the casing outside in and is still favorable to the maintenance of power supply on improving the heat dissipation environment basis. However, the ventilator has limited air volume and air pressure and is difficult to control.
Disclosure of Invention
In order to solve the technical problem, the utility model provides a counter-rotating axial-flow fan that bevel gear drive impeller heteropleural was arranged. The ventilator has the advantages of large air volume and compact layout, and has practical application value.
In order to realize the above-mentioned purpose, the utility model discloses a contra-rotating axial-flow fan that bevel gear transmission impeller heteropleural side was arranged, it includes the casing, is located respectively the air inlet section of thick bamboo and the play dryer of casing left and right ends still including locating two power supplies in the casing outside and connect the shaft coupling of each power supply, each bevel gear transmission is connected respectively to the shaft coupling, each all be equipped with two coaxial antiport's power output shaft on the bevel gear transmission, each power output shaft connects an impeller respectively and constitutes a set ofly, and every group impeller is located and corresponds the connection bevel gear transmission homonymy, and all impellers are close to and arrange.
Further, all the impellers are located between two bevel gear transmissions.
Furthermore, each bevel gear transmission device comprises a power input shaft with one end connected with the coupler and the other end fixedly connected with the first bevel gear, a 90-degree included angle is formed between the central axis direction of the power input shaft and the central axis direction of the power output shaft, the power output shaft comprises a first power output shaft and a second power output shaft, one end of the first power output shaft is fixedly connected with the second bevel gear, one end of the second power output shaft is fixedly connected with the third bevel gear, and the gear teeth of the first bevel gear are simultaneously meshed with the gear teeth of the second bevel gear and the gear teeth of the third bevel gear.
Further, a bearing is arranged between the first power output shaft and the second power output shaft.
Further, each power output shaft is connected with each impeller in a key joint mode.
Further, the shell comprises an inner shell and an outer shell, and the inner shell and the outer shell are fixedly connected through a flange.
Further, the power source is a motor.
Has the advantages that:
1. the utility model designs a ventilator which adopts the external mode of the power source, is beneficial to improving the heat dissipation environment of the ventilator, is also beneficial to the maintenance of the power source and improves the aerodynamic performance of the ventilator by optimizing the flow channel of the ventilator;
2. the utility model discloses a ventilation blower rotates through a plurality of impellers of external two and above power supply drive, and all impellers are close to the setting, and distance between each impeller of control realizes multistage disrotatory ventilation, is favorable to improving ventilation unit's the amount of wind and wind pressure.
Drawings
Fig. 1 is a left side view of a ventilator designed by 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 bevel gear assembly of FIG. 2;
wherein, the numbering in each drawing is as follows:
a housing 1 (inner housing 1a, outer housing 1 b);
a lifting lug 2;
a ground margin 3;
a sound-deadening layer 4;
an air inlet drum 5;
an air outlet cylinder 6;
a filter screen 7;
a dome 8;
a power source 9;
a coupling 10;
bevel gear transmission 11 (power input shaft 11.1, first bevel gear 11.2, first power output shaft 11.3, second power output shaft 11.4, second bevel gear 11.5 and third bevel gear 11.6));
an impeller 12;
a flange 13.
Detailed Description
The utility model discloses a solve current axial-flow fan's amount of wind, wind pressure are limited, and the not wayward technical problem discloses a counter-rotating axial-flow fan that bevel gear transmission impeller heteropleural was arranged, and this ventilation blower realizes the control to a plurality of impellers through each axis of rotation among two and above power supply drive bevel gear transmission. However, the actual operation condition is that if the power source is too much or the number of the impellers in the ventilator is too many, the circuit connection is inevitably caused or the internal structure of the ventilator is complicated, which may be unfavorable for the actual use.
Therefore, the number of the power sources and the number of the impellers are particularly important for ensuring the proper air volume and air pressure of the ventilator and the structural layout of the whole device.
For better explanation of the present invention, the main contents of the present invention will be further explained below with reference to specific examples, but the present invention is not limited to the following examples.
Example 1
The embodiment discloses a dual-power driven bevel gear transmission device and a four-stage contra-rotating axial-flow fan driving impellers arranged on different sides to rotate, as shown in fig. 1, the fan comprises a shell 1 enclosed by an inner shell 1a and an outer shell 1b, the inner shell 1a and the outer shell 1b are fixedly connected through a flange 13, meanwhile, a noise elimination layer 4 is further arranged between the inner shell 1a and the outer shell 1b, the noise elimination layer 4 is preferably made of glass fiber cotton, and the noise elimination layer has the main technical effect of noise elimination. The top end of the outer side of the shell 1 is provided with a lifting lug 2, and the bottom end of the shell is provided with a ground foot 3.
As can be seen from fig. 2, an air inlet cylinder 5 and an air outlet cylinder 6 are respectively arranged at the left end and the right end of the outer shell 1b, a filter screen 7 and a flow guide sleeve 8 are arranged in the air inlet cylinder 5, and the flow guide sleeve 8 is also arranged in the air outlet cylinder 6; wherein the filter screen 7 is used for preventing overlarge foreign matters from entering the interior of the ventilator to damage the impeller.
Meanwhile, two power supplies 9 have been arranged in the casing 1 outside, the utility model discloses it is preferred power supply 9 is the motor, and simultaneously, this motor is multispeed motor or single-speed motor and adds variable frequency speed control device, thereby adopts multispeed motor or single-speed motor to add variable frequency speed control device's purpose to realize adjusting the ventilation blower rotational speed and adjust its flow and wind pressure.
Simultaneously for improving the aerodynamic performance of ventilation blower, the utility model discloses installation opposite direction between preferred two power supplies 9, 10 one ends of shaft coupling are connected to each power supply 9, bevel gear transmission 11, each are connected to the shaft coupling 10 other end all be equipped with two coaxial antiport's power output shaft on the bevel gear transmission 11, each power output shaft connects an impeller 12 respectively and constitutes a set ofly, and every group impeller 12 is located and corresponds the connection 11 homonymies of bevel gear transmission combine figure 2 to know, and wherein 11 right sides of bevel gear transmission are located to a set of impeller 12, and 11 left sides of bevel gear transmission are located to another group impeller 12 for two sets of all impellers 12 are close to arrange and are located between two bevel gear transmission 11. The four impellers 12 which are close together are alternately and positively rotated by controlling the opposite rotation directions of the two motors, so that the multistage disrotatory under the conditions of large wind volume and high wind pressure is realized. In addition, for obtaining better aerodynamic performance, the utility model discloses select in every group impeller interval between two impellers 12 as little as possible under the principle that does not take place the looks mutual friction.
The utility model discloses a realize the coaxial antiport between first power output shaft 11.3 and the second power output shaft 11.4, at each still set up bevel gear in the bevel gear transmission 11, realize coaxial reversal through the bevel gear transmission.
Specifically, combine fig. 3 to know, the utility model discloses select each bevel gear transmission 11 includes power input shaft 11.1, wherein, shaft coupling 10 is connected to power input shaft 11.1 one end, and power output shaft is connected to the other end, possess 90 contained angles between power input shaft 11.1's the central axis direction and the central axis direction of power output shaft, power output shaft includes coaxial reverse pivoted first power output shaft 11.3 and second power output shaft 11.4, and simultaneously, power input shaft 11.1 fixed connection second bevel gear 11.2, first power output shaft 11.3 one end fixed connection second bevel gear 11.5, second power output shaft 11.4 one end fixed connection third bevel gear 11.6, the teeth of a cogwheel of first bevel gear 11.2 mesh the teeth of a cogwheel 11.5, the second bevel gear teeth of third bevel gear 11.6 simultaneously. Each bevel gear is preferably a conical gear.
In order to ensure the smooth meshing of each first power output shaft 11.3, each second power output shaft 11.4 and each gear, the utility model also selects a bearing to be arranged between the outer side of the first power output shaft 11.3 and the inner side of the second power output shaft 11.4; 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 detachable connection such as interference fit and the like or non-detachable fixed connection and the like.
Meanwhile, each motor and each bevel gear transmission device are fixed inside the shell through the support frames which are respectively connected. The utility model discloses do not give and correspond the serial number, but its reality really exists.
Therefore, the utility model discloses a ventilation blower has compromise big amount of wind, high wind pressure and the compact advantage of overall arrangement, possesses practical application and worth.
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 the technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope claimed by the present invention.
Claims (8)
1. The utility model provides a contra-rotating axial-flow fan that bevel gear transmission impeller heteropleural was arranged, it includes casing (1), is located respectively air inlet cylinder (5) and play dryer (6) of casing (1) left and right ends, its characterized in that still including locating two power supplies (9) in casing (1) outside and shaft coupling (10) of connecting each power supply (9), each bevel gear transmission (11) are connected respectively in shaft coupling (10), each all be equipped with two coaxial antiport's power output shaft on bevel gear transmission (11), each power output shaft connects an impeller (12) respectively and constitutes a set of, every group impeller (12) are located and correspond the connection bevel gear transmission (11) homonymy, and all impellers (12) are close to and arrange.
2. Counter-rotating axial fan with bevel-driven impellers arranged on opposite sides according to claim 1, characterised in that all the impellers (12) are located between the bevel-driven gears (11).
3. The contra-rotating axial-flow fan which is arranged at the opposite side of the bevel gear transmission impeller according to any one of the claims 1-2, it is characterized in that each bevel gear transmission device (11) comprises a power input shaft (11.1) with one end connected with a coupling (10) and the other end fixedly connected with a first bevel gear (11.2), an included angle of 90 degrees is formed between the central axis direction of the power input shaft (11.1) and the central axis direction of the power output shaft, the power output shaft comprises a first power output shaft (11.3) and a second power output shaft (11.4), wherein one end of the first power output shaft (11.3) is fixedly connected with a second bevel gear (11.5), one end of the second power output shaft (11.4) is fixedly connected with a third bevel gear (11.6), the teeth of the first bevel gear (11.2) are simultaneously meshed with the teeth of the second bevel gear (11.5) and the third bevel gear (11.6).
4. Counter-rotating axial-flow ventilator with bevel gear drive impeller arranged on the opposite side according to claim 3, characterized in that a bearing is provided between the first power take-off shaft (11.3) and the second power take-off shaft (11.4).
5. Counter-rotating axial-flow ventilator according to claim 3, characterised in that the power take-off shafts are connected to the impellers (12) by means of a keyed joint.
6. Counter-rotating axial fan arranged opposite to the bevel gear driven impeller according to claim 1 or 2 or 4 or 5, characterized in that the casing (1) comprises an inner casing (1a) and an outer casing (1b), and the inner casing (1a) and the outer casing (1b) are fixedly connected through a flange (13).
7. Counter-rotating axial fan arranged on the opposite side of the bevel gear driven impeller according to claim 6, characterized in that a sound-damping layer (4) is provided between the inner housing (1a) and the outer housing (1 b).
8. Counter-rotating axial-flow ventilator according to the bevel-gear driven impeller of claim 1 or 2 or 4 or 5 or 7, characterized in that the power source (9) is an electric motor, the electric motor is a single-speed motor or a multi-speed motor, and when it is a single-speed motor, a variable-frequency speed-adjusting device is added.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022655146.3U CN215058281U (en) | 2020-11-16 | 2020-11-16 | Contra-rotating axial-flow fan with bevel gear transmission impellers arranged on different sides |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022655146.3U CN215058281U (en) | 2020-11-16 | 2020-11-16 | Contra-rotating axial-flow fan with bevel gear transmission impellers arranged on different sides |
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| Publication Number | Publication Date |
|---|---|
| CN215058281U true CN215058281U (en) | 2021-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022655146.3U Active CN215058281U (en) | 2020-11-16 | 2020-11-16 | Contra-rotating axial-flow fan with bevel gear transmission impellers arranged on different sides |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115126707A (en) * | 2022-06-28 | 2022-09-30 | 湖北工程学院 | External motor driven counter-rotating axial-flow type impeller main ventilator and construction method thereof |
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2020
- 2020-11-16 CN CN202022655146.3U patent/CN215058281U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115126707A (en) * | 2022-06-28 | 2022-09-30 | 湖北工程学院 | External motor driven counter-rotating axial-flow type impeller main ventilator and construction method thereof |
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