CN211874752U - Axial-flow smoke exhaust fan - Google Patents
Axial-flow smoke exhaust fan Download PDFInfo
- Publication number
- CN211874752U CN211874752U CN201922071809.4U CN201922071809U CN211874752U CN 211874752 U CN211874752 U CN 211874752U CN 201922071809 U CN201922071809 U CN 201922071809U CN 211874752 U CN211874752 U CN 211874752U
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- CN
- China
- Prior art keywords
- motor
- fan blade
- worm
- fan
- roller wheel
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- Expired - Fee Related
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- 239000000779 smoke Substances 0.000 title claims abstract description 18
- 241000886569 Cyprogenia stegaria Species 0.000 claims abstract description 3
- 230000008878 coupling Effects 0.000 claims abstract description 3
- 238000010168 coupling process Methods 0.000 claims abstract description 3
- 238000005859 coupling reaction Methods 0.000 claims abstract description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Images
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to an axial-flow type smoke exhaust fan, including fan casing, fan blade, motor, fix fan blade crossbeam and the motor crossbeam in the fan casing, the fan blade rotates to be connected on the fan blade crossbeam, and the motor is fixed on the motor crossbeam, fan blade pivot and motor shaft coaxial coupling, its characterized in that: a cold air bin is arranged outside the fan shell; the fan blade cross beam is also provided with a first roller wheel which is coaxially connected with a fan blade rotating shaft, the first roller wheel is connected with a second roller wheel through a triangular belt, the second roller wheel is arranged in the cold air bin, the second roller wheel is provided with a rotating shaft, one end of the rotating shaft is rotatably connected with a roller wheel support, the other end of the rotating shaft is fixedly connected with a worm wheel, the worm wheel is connected with a worm, one end of the worm is connected with a small blade, and the other end of the worm is rotatably connected with a worm support; the fan blade cross beam is also provided with a heat shield, and the motor is arranged in the heat shield. The utility model discloses have the beneficial effect that the noise is little, the motor heat dissipation is good.
Description
Technical Field
The utility model relates to a fire-fighting equipment technical field, in particular to axial-flow type smoke exhaust fan.
Background
With the rapid development of the building industry, more and more high-rise buildings are built, and the fire prevention problem of the buildings is increasingly serious. Modern buildings built in recent years are generally provided with a fire-fighting smoke exhaust system which mainly comprises a sensing device, a control device, a smoke exhaust air duct, a smoke exhaust fan and the like. The smoke exhaust fan is a core component of a fire-fighting smoke exhaust system, and the development of the high-performance fire-fighting smoke exhaust fan can generate good economic and social benefits. At present, the general smoke exhaust fan in China all adopts axial flow fan, and the motor is coaxial with the blade, and the motor is often exposed under the high temperature environment, and not only the noise is big, breaks down easily moreover. In order to solve the above problems, chinese utility model patent CN200620010590.7 discloses a self-radiating smoke exhaust fan for fire control, which mainly comprises an outer cylinder, an inner cylinder, an impeller assembly, a motor, a guide plate and an air guide pipe, and is characterized in that an induced draft guide pipe is arranged between the inner cylinder and the outer cylinder, the induced draft guide pipe is transversely distributed at two ends of the outer cylinder left and right, the inner cylinder and the outer cylinder are connected together, and an air outlet bent pipe is arranged at the front end of the inner cylinder. The utility model discloses a although the self-cooling type fire control smoke exhaust fan that provides can reduce noise and power that motor heat dissipation impeller produced, still have following problem: because the motor is arranged in the smoke exhaust channel, the motor is in a high-temperature environment, the self-radiating effect is not ideal enough by adopting the induced draft pipeline, the radiating wind power is small, and the motor is easy to overheat and lose efficacy.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide an axial-flow type smoke exhaust fan that the noise is little, motor heat dissipation is good.
In order to solve the technical problem, the utility model discloses a following technical scheme: the utility model provides an axial-flow type smoke exhaust fan, includes fan casing, fan blade, motor, fixes fan blade crossbeam and the motor crossbeam in the fan casing, and the fan blade rotates to be connected on the fan blade crossbeam, and the motor is fixed on the motor crossbeam, fan blade pivot and motor shaft coaxial coupling, its characterized in that: a cold air bin is arranged outside the fan shell; the fan blade cross beam is also provided with a first roller wheel which is coaxially connected with a fan blade rotating shaft, the first roller wheel is connected with a second roller wheel through a triangular belt, the second roller wheel is arranged in the cold air bin, the second roller wheel is provided with a rotating shaft, one end of the rotating shaft is rotatably connected with a roller wheel support, the other end of the rotating shaft is fixedly connected with a worm wheel, the worm wheel is connected with a worm, one end of the worm is connected with a small blade, and the other end of the worm is rotatably connected with a worm support; the fan blade cross beam is also provided with a heat shield, and the motor is arranged in the heat shield; the cold air bin is provided with an air inlet and an air outlet, the air outlet is communicated into the heat shield through an air guide pipe, and an outlet of the air guide pipe is positioned in front of the motor in the heat shield.
The heat shield is half football-shaped in appearance.
The utility model discloses a set up first gyro wheel in the fan blade pivot, transmit the second gyro wheel in the cold wind storehouse with the rotation of motor, this second gyro wheel leads to the pivot will rotate the transmission and give the worm wheel, and the worm wheel will rotate the transmission again and give the worm, and the axial of worm is the vertically with the axial of worm wheel, and the worm will rotate the transmission and give the leaflet, and the leaflet drives external cold air entering cold wind storehouse, and it is preceding that cold air reachs the motor through the guide duct, cools down for the motor. The utility model discloses set up a heat exchanger that separates between motor and fan blade, cover the motor, can keep apart the influence of the hot-blast directness that the blade brought to the motor, play the effect of thermal-insulated cooling, should separate the heat exchanger in addition and still have the effect of keeping apart the motor noise, be favorable to reducing the noise at work of fan.
The utility model discloses utilize the rotation of main motor, turn to with the help of the worm gear, then set up the bladelett and cool down for the motor provides cold wind, do not need special cooling motor, have the advantage that the energy consumption is low.
To sum up, the utility model discloses beneficial effect that the noise is little, the motor heat dissipation is good has.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of a worm gear assembly structure.
Detailed Description
As shown in fig. 1 and 2, an axial-flow smoke exhaust fan comprises a fan housing 1, fan blades 2, a motor 3, a fan blade beam 4 and a motor beam 5 fixed in the fan housing, wherein the fan blades 2 are rotatably connected to the fan blade beam 4, the motor 3 is fixed on the motor beam 5, a fan blade rotating shaft 21 is coaxially connected with a motor rotating shaft 31, and a cold air bin 6 is arranged outside the fan housing 1; the fan blade cross beam 4 is also provided with a first roller 7, the first roller 7 is coaxially connected with a fan blade rotating shaft 21, the first roller 7 is connected with a second roller 9 through a triangular belt 8, the second roller is arranged 9 in the cold air bin 6, the second roller 9 is provided with a rotating shaft 10, one end of the rotating shaft 10 is rotatably connected with a roller bracket 11, the other end of the rotating shaft is fixedly connected with a worm wheel 12, the worm wheel 12 is connected with a worm 13, one end of the worm 13 is connected with a small blade 14, and the other end of the worm 13 is rotatably connected with a worm bracket 15; the fan blade cross beam 4 is also provided with a heat shield 16, and the motor 3 is arranged in the heat shield 16; the cold air bin 6 is provided with an air inlet 6a and an air outlet 6b, the air outlet 6b is communicated into the heat shield through an air guide pipe 17, and the air outlet of the air guide pipe 17 is positioned in front of the motor 3 in the heat shield 16.
Claims (1)
1. The utility model provides an axial-flow type smoke exhaust fan, includes fan casing, fan blade, motor, fixes fan blade crossbeam and the motor crossbeam in the fan casing, and the fan blade rotates to be connected on the fan blade crossbeam, and the motor is fixed on the motor crossbeam, fan blade pivot and motor shaft coaxial coupling, its characterized in that: a cold air bin is arranged outside the fan shell; the fan blade cross beam is also provided with a first roller wheel which is coaxially connected with a fan blade rotating shaft, the first roller wheel is connected with a second roller wheel through a triangular belt, the second roller wheel is arranged in the cold air bin, the second roller wheel is provided with a rotating shaft, one end of the rotating shaft is rotatably connected with a roller wheel support, the other end of the rotating shaft is fixedly connected with a worm wheel, the worm wheel is connected with a worm, one end of the worm is connected with a small blade, and the other end of the worm is rotatably connected with a worm support; the fan blade cross beam is also provided with a heat shield, and the motor is arranged in the heat shield; the cold air bin is provided with an air inlet and an air outlet, the air outlet is communicated into the heat shield through an air guide pipe, and an outlet of the air guide pipe is positioned in front of the motor in the heat shield.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922071809.4U CN211874752U (en) | 2019-11-27 | 2019-11-27 | Axial-flow smoke exhaust fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922071809.4U CN211874752U (en) | 2019-11-27 | 2019-11-27 | Axial-flow smoke exhaust fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211874752U true CN211874752U (en) | 2020-11-06 |
Family
ID=73243818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922071809.4U Expired - Fee Related CN211874752U (en) | 2019-11-27 | 2019-11-27 | Axial-flow smoke exhaust fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211874752U (en) |
-
2019
- 2019-11-27 CN CN201922071809.4U patent/CN211874752U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201106 |