CN204436885U - Fan box denoising structure - Google Patents
Fan box denoising structure Download PDFInfo
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- CN204436885U CN204436885U CN201520050238.5U CN201520050238U CN204436885U CN 204436885 U CN204436885 U CN 204436885U CN 201520050238 U CN201520050238 U CN 201520050238U CN 204436885 U CN204436885 U CN 204436885U
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- rotating cylinder
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Abstract
The utility model discloses fan box denoising structure, comprise casing and spiral case, the inwall of casing is provided with noise reduction layer, the left side of rotating cylinder is tiltedly installed with multiple first blade along its excircle, the right side of rotating cylinder is tiltedly installed with multiple second blade along its excircle, and the angle of inclination of the first blade is less than the second blade; The top of barge board is hinged is provided with regulator plate, and the outer wall of barge board is fixed with supporting drum, and sliding in supporting drum is provided with connecting rod, and be provided with roller on the top of connecting rod, the two ends of regulator plate offer the rectangle groove matched with roller.Rotating cylinder is entered by the two ends of rotating cylinder when air-flow pours in, first fan blade and the second fan blade are and are obliquely installed, and the angle of inclination of the first fan blade is less than the second fan blade, the air-flow at two ends, rotating cylinder left and right is made to present laminar flow distribution, reduce by the resistance of the air-flow of discharging in rotating cylinder, reduce air-flow energy loss at the volley, improve the air draft in ventilation duct and smoke exhaust efficiency.
Description
Technical field
The utility model relates to smoke exhaust fan technical field, specifically refers to fan box denoising structure.
background techniqueat present, Building Fire Protection purging system leaks sudden and violent problem a lot, and particularly the quality of fire prevention to high buildings purging system is extremely important, and a lot of fire is because of the very serious consequence of the bad generation of purging system.Present tall building is much all provided with fire-fighting smoke exhaust system, discharges a large amount of poisonous dense smoke that fire burning produces.In fire-fighting smoke exhaust system, smoke exhaust fan is its core component, and the stability of work generally just decides the quality of whole system.Existing smoke exhaust fan reaches 200-300 DEG C because of combustion product gases temperature, long high temperature easily makes smoke exhaust fan be out of shape, damages, affect smoke discharging effect, generally, when building is on fire, all power supplys will be cut off, once cut off the electricity supply, smoke exhaust fan just cannot run, and makes blower fan useless; And in smoke evacuation process, the long time running of blower fan and the phase mutual friction between fan blade with air-flow can produce noise, cause serious noise pollution.
Model utility content
The purpose of this utility model is to provide fan box denoising structure, ensures that blower fan keeps stable, quiet working state in smoke evacuation process, improves the working life of blower fan.
The purpose of this utility model is achieved through the following technical solutions:
Fan box denoising structure, comprise casing and be arranged on the spiral case of box house, the exhaust outlet that spiral case is communicated with is offered in the front of casing, the back side of casing offers the intake grill be communicated with spiral case, the inwall of described casing is provided with noise reduction layer, described drum rotation is arranged in spiral case, the left side of described rotating cylinder is tiltedly installed with multiple first blade along its excircle, the right side of described rotating cylinder is tiltedly installed with multiple second blade along its excircle, and the angle of inclination of the first blade is less than the second blade; Also comprise barge board, described barge board is arranged on immediately below exhaust outlet, the top of barge board is hinged is provided with regulator plate, the outer wall of barge board is fixed with supporting drum, slide in supporting drum and be provided with connecting rod, connecting rod is connected with the bottom of supporting drum by spring, and is provided with roller on the top of connecting rod, and the two ends of regulator plate offer the rectangle groove matched with roller.
During utility model works, the rotating shaft of rotating cylinder internal fixtion is connected with external motor by chain, rotating cylinder is setting in motion under the driving of motor, bring the air-flow poured in by intake grill into rotating cylinder, exhaust outlet is discharged by air flow collection under the wind direction of the first fan blade and the second fan blade regulates, discharge along pipeline indoor to reach to the smog in ventilation duct and heat, stop spreading of the intensity of a fire and smog, in blower fan smoke evacuation process for a long time, cabinet wall is provided with noise reduction layer, can by air-flow and rotating cylinder and the first fan blade, between second fan blade, mutual fricative noise is eliminated, blower fan is avoided to produce ear-piercing boom when normal air draft or smoke evacuation in casing, and the two ends of rotating cylinder are communicated with box house, rotating cylinder is entered by the two ends of rotating cylinder when air-flow pours in, first fan blade and the second fan blade are and are obliquely installed, and the angle of inclination of the first fan blade is less than the second fan blade, the air-flow at two ends, rotating cylinder left and right is made to present laminar flow distribution, reduce by the resistance of the air-flow of discharging in rotating cylinder, reduce air-flow energy loss at the volley, improve the air draft in ventilation duct and smoke exhaust efficiency, further, immediately below exhaust outlet, barge board is installed, the air-flow of rotating cylinder bottom exhaust outlet can be concentrated to the middle part of exhaust outlet, increase the ventilation efficiency of blower fan,
Wherein, in smoke evacuation process, the two ends of rotating cylinder are communicated with box house, rotating cylinder is entered by the two ends of rotating cylinder when air-flow pours in, the air-flow that rotating cylinder is discharged regulates through the appropriateness of regulator plate, ensure its wind direction just to the center of ventilation duct, the energy loss that reduction air-flow forms wadding stream at the volley and causes, improve the air draft in ventilation duct and smoke exhaust efficiency, further, when air-flow starts to collide on regulator plate, the stressed direction with air motion of regulator plate is moved, simultaneously roller moves towards the other end of rectangle groove after being under pressure, spring is compressed, can produce a rightabout active force after spring generation elastic strain makes regulator plate come back to home position, when the air-flow that rotating cylinder produces is unstable, regulator plate is subject to swing in various degree, spring swings a generation support force in time according to it and makes regulator plate be in stable state all the time, avoid air-flow unstable and cause exhaust outlet place to occur the situation of wadding stream, ensure that blower fan wind direction in smoke evacuation process keeps stable state, the ventilation efficiency of further raising blower fan.
Further, the cross section of described first blade is circular arc, and the thickness in the middle part of circular arc is greater than the thickness at its two ends.The cross section of the first blade is the circular arc of the thin thick middle in two ends, when making drum rotation, the friction be positioned between first blade in left side and air-flow reduces, and can increase the lift of the first blade, and then reduce the operating load of rotating cylinder, improve the ventilation efficiency of blower fan entirety.
Further, also comprise the projection that cross section is arc, described projection is fixed on regulator plate on the inwall of supporting drum side, and the thickness of protruding one end successively decreases along the movable end direction of the fixed end sensing regulator plate of regulator plate.The inwall of regulator plate is fixed with the projection of arc, air-flow is cushioned in advance before impact regulator plate, avoid regulator plate to regulate the air turbulence caused not in time and directly between rotating cylinder and exhaust outlet when being subject to unstable gas shock, and then reduce the ventilation efficiency at exhaust outlet place.
Further, the cross section of described exhaust outlet is square.Shape many employings rectangle of ventilation duct, as preferably, exhaust outlet is set to square, can to facilitate between casing with ventilation duct quick is connected, and the radiation-curable various piece to ventilation duct inwall of the air-flow of being discharged by blower fan, avoid smog in pipeline, to form wadding stream with the resistance improving air motion.
Further, the cross section of described exhaust outlet is circular.According to square being directly proportional of fluid friction resistance loss and liquid speed, in the figure that various closed curve surrounds, when girth one regularly, the area of a circle is maximum.Therefore when exhaust outlet girth is identical, the surface friction drag of square exhaust outlet is the twice of circular exhaust outlet, and visible circular exhaust outlet can greatly reduce the fluid loss of fluid through exhaust outlet.
Further, described noise reduction layer is made up of the silencing cotton of more than 3 layers.The noise that blower interior produces because of the phase mutual friction between structure member with air-flow can be eliminated by the silencing cotton of more than 3 layers completely, ensures that blower fan keeps stable, quiet working state in smoke evacuation process, improves the working life of blower fan.
The utility model compared with prior art, has following advantage and beneficial effect:
1, the two ends of rotating cylinder of the present utility model are communicated with box house, rotating cylinder is entered by the two ends of rotating cylinder when air-flow pours in, first fan blade and the second fan blade are and are obliquely installed, and the angle of inclination of the first fan blade is less than the second fan blade, the air-flow at two ends, rotating cylinder left and right is made to present laminar flow distribution, reduce by the resistance of the air-flow of discharging in rotating cylinder, reduce air-flow energy loss at the volley, improve the air draft in ventilation duct and smoke exhaust efficiency, when air-flow starts to collide on regulator plate, the stressed direction with air motion of regulator plate is moved, simultaneously roller moves towards the other end of rectangle groove after being under pressure, spring is compressed, can produce a rightabout active force after spring generation elastic strain makes regulator plate come back to home position, when the air-flow that rotating cylinder produces is unstable, regulator plate is subject to swing in various degree, spring swings a generation support force in time according to it and makes regulator plate be in stable state all the time, avoid air-flow unstable and cause exhaust outlet place to occur the situation of wadding stream, ensure that blower fan wind direction in smoke evacuation process keeps stable state, improve the ventilation efficiency of blower fan,
2, the cross section of the first blade of the present utility model is the circular arc of the thin thick middle in two ends, when making drum rotation, the friction be positioned between first blade in left side and air-flow reduces, and can increase the lift of the first blade, and then reduce the operating load of rotating cylinder, improve the ventilation efficiency of blower fan entirety;
3, the utility model square to be directly proportional according to fluid friction resistance loss and liquid speed, in the figure that various closed curve surrounds, when girth one regularly, the area of a circle is maximum.Therefore when exhaust outlet girth is identical, the surface friction drag of square exhaust outlet is the twice of circular exhaust outlet, and visible circular exhaust outlet can greatly reduce the fluid loss of fluid through exhaust outlet.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide the further understanding to the utility model embodiment, forms a application's part, does not form the restriction to the utility model embodiment.In the accompanying drawings:
Fig. 1 is structural representation of the present utility model;
Fig. 2 be A of the present utility model to partial enlarged drawing;
Fig. 3 is the structural representation of rotating cylinder;
Fig. 4 is the sectional view of regulator plate;
Mark and corresponding component title in accompanying drawing:
1-casing, 2-exhaust outlet, 3-rotating cylinder, 4-barge board, 5-intake grill, 6-spiral case, 7-rotating shaft, 8-first blade, 9-second blade, 10-noise reduction layer, 11 regulator plates, 12-supporting drum, 13-spring, 14-projection, 15-rectangle groove, 16-roller, 17-connecting rod.
Embodiment
Clearly understand for making the purpose of this utility model, technological scheme and advantage, below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, exemplary embodiment of the present utility model and explanation thereof are only for explaining the utility model, and conduct is not to restriction of the present utility model.
Embodiment 1
As shown in Figures 1 to 4, the present embodiment fan box denoising structure, comprise casing 1 and be arranged on the spiral case 6 of casing 1 inside, the exhaust outlet 2 that spiral case 6 is communicated with is offered in the front of casing 1, the back side of casing 1 offers the intake grill 5 be communicated with spiral case 6, the inwall of described casing 1 is provided with noise reduction layer 10, described rotating cylinder 3 rotates and is arranged in spiral case 6, the left side of described rotating cylinder 3 is tiltedly installed with multiple first blade 8 along its excircle, the right side of described rotating cylinder 3 is tiltedly installed with multiple second blade 9 along its excircle, and the angle of inclination of the first blade 8 is less than the second blade 9, also comprise barge board 4, described barge board 4 is arranged on immediately below exhaust outlet 2, the top of barge board 4 is hinged is provided with regulator plate 11, the outer wall of barge board 4 is fixed with supporting drum 12, slide in supporting drum 12 and be provided with connecting rod 17, connecting rod 17 is connected with the bottom of supporting drum 12 by spring 13, and is provided with roller 16 on the top of connecting rod 17, and the two ends of regulator plate 11 offer the rectangle groove 15 matched with roller 16, the cross section of described first blade 8 is circular arc, and the thickness in the middle part of circular arc is greater than the thickness at its two ends, also comprise the projection 14 that cross section is arc, described protruding 14 are fixed on regulator plate 11 on the inwall of supporting drum 12 side, and the thickness of protruding 14 one end successively decreases along the movable end direction of the fixed end sensing regulator plate 11 of regulator plate 11.
During utility model works, the rotating shaft 7 of rotating cylinder 3 internal fixtion is connected with external motor by chain, rotating cylinder 3 is setting in motion under the driving of motor, bring the air-flow poured in by intake grill 5 into rotating cylinder 3, exhaust outlet 2 will be discharged in air flow collection under the wind direction of the first fan blade and the second fan blade regulates, discharge along pipeline indoor to reach to the smog in ventilation duct and heat, stop spreading of the intensity of a fire and smog, in blower fan smoke evacuation process for a long time, casing 1 inwall is provided with noise reduction layer 10, can by air-flow and rotating cylinder 3 and the first fan blade, between second fan blade, mutual fricative noise is eliminated, blower fan is avoided to produce ear-piercing boom when normal air draft or smoke evacuation in casing 1, and the two ends of rotating cylinder 3 are communicated with casing 1 inside, rotating cylinder 3 is entered by the two ends of rotating cylinder 3 when air-flow pours in, first fan blade and the second fan blade are and are obliquely installed, and the angle of inclination of the first fan blade is less than the second fan blade, the air-flow at rotating cylinder about 3 two ends is made to present laminar flow distribution, reduce by the resistance of the air-flow of discharging in rotating cylinder 3, reduce air-flow energy loss at the volley, improve the air draft in ventilation duct and smoke exhaust efficiency, further, barge board 4 is installed immediately below exhaust outlet 2, the air-flow of rotating cylinder 3 bottom exhaust outlet 2 can be concentrated to the middle part of exhaust outlet 2, increase the ventilation efficiency of blower fan, wherein the cross section of the first blade 8 is the circular arc of the thin thick middle in two ends, when rotating cylinder 3 is rotated, the friction be positioned between first blade 8 in left side and air-flow reduces, and can increase the lift of the first blade 8, and then reduce the operating load of rotating cylinder 3, improve the ventilation efficiency of blower fan entirety,
Wherein, in blower fan smoke evacuation process for a long time, the two ends of rotating cylinder 3 are communicated with casing 1 inside, rotating cylinder 3 is entered by the two ends of rotating cylinder 3 when air-flow pours in, the air-flow that rotating cylinder 3 is discharged regulates through the appropriateness of regulator plate 11, ensure its wind direction just to the center of ventilation duct, the energy loss that reduction air-flow forms wadding stream at the volley and causes, improve the air draft in ventilation duct and smoke exhaust efficiency, further, when air-flow starts to collide on regulator plate 11, the stressed direction with air motion of regulator plate 11 is moved, simultaneously roller 16 moves towards the other end of rectangle groove 15 after being under pressure, spring 13 is compressed, can produce a rightabout active force after elastic strain occurs spring 13 makes regulator plate 11 come back to home position, when the air-flow that rotating cylinder 3 produces is unstable, regulator plate 11 is subject to swing in various degree, spring 13 swings a generation support force in time according to it and makes regulator plate 11 be in stable state all the time, avoid air-flow unstable and cause exhaust outlet 2 place to occur the situation of wadding stream, ensure that blower fan wind direction in smoke evacuation process keeps stable state, the ventilation efficiency of further raising blower fan.
As preferably, the cross section of described exhaust outlet 2 is square.Shape many employings rectangle of ventilation duct, as preferably, exhaust outlet 2 is set to square, casing 1 can be facilitated to be connected with quick between ventilation duct, and the radiation-curable various piece to ventilation duct inwall of the air-flow of being discharged by blower fan, avoid smog in pipeline, to form wadding stream with the resistance improving air motion.
As preferably, the cross section of described exhaust outlet 2 is circular.According to square being directly proportional of fluid friction resistance loss and liquid speed, in the figure that various closed curve surrounds, when girth one regularly, the area of a circle is maximum.Therefore when exhaust outlet 2 girth is identical, the surface friction drag of square exhaust outlet 2 is twices of circular exhaust outlet 2, and visible circular exhaust outlet 2 can greatly reduce the fluid loss of fluid through exhaust outlet 2.
As preferably, the noise that blower interior produces because of the phase mutual friction between structure member with air-flow can be eliminated by the silencing cotton of more than 3 layers completely, ensures that blower fan keeps stable in smoke evacuation process, quiet working state, the working life of raising blower fan.
Above-described embodiment; the purpose of this utility model, technological scheme and beneficial effect are further described; be understood that; the foregoing is only embodiment of the present utility model; and be not used in restriction protection domain of the present utility model; all within spirit of the present utility model and principle, any amendment made, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (6)
1. fan box denoising structure, comprise casing (1) and be arranged on the inner spiral case (6) of casing (1), the exhaust outlet (2) that spiral case (6) is communicated with is offered in the front of casing (1), the back side of casing (1) offers the intake grill (5) be communicated with spiral case (6), it is characterized in that: the inwall of described casing (1) is provided with noise reduction layer (10), rotating cylinder (3) rotates and is arranged in spiral case (6), the left side of described rotating cylinder (3) is tiltedly installed with multiple first blade (8) along its excircle, the right side of described rotating cylinder (3) is tiltedly installed with multiple second blade (9) along its excircle, and the angle of inclination of the first blade (8) is less than the second blade (9), also comprise barge board (4), described barge board (4) is arranged on immediately below exhaust outlet (2), the top of barge board (4) is hinged is provided with regulator plate (11), the outer wall of barge board (4) is fixed with supporting drum (12), slide in supporting drum (12) and be provided with connecting rod (17), connecting rod (17) is connected by the bottom of spring (13) with supporting drum (12), and on the top of connecting rod (17), roller (16) being installed, the two ends of regulator plate (11) offer the rectangle groove (15) matched with roller (16).
2. fan box denoising structure according to claim 1, is characterized in that: the cross section of described first blade (8) is circular arc, and the thickness in the middle part of circular arc is greater than the thickness at its two ends.
3. fan box denoising structure according to claim 1, it is characterized in that: also comprise the projection (14) that cross section is arc, described projection (14) is fixed on regulator plate (11) on the inwall of supporting drum (12) side, and the thickness of protruding (14) one end successively decreases along the movable end direction of fixed end sensing regulator plate (11) of regulator plate (11).
4. the fan box denoising structure according to claim 1 or 2 or 3, is characterized in that: the cross section of described exhaust outlet (2) is square.
5. the fan box denoising structure according to claim 1 or 2 or 3, is characterized in that: the cross section of described exhaust outlet (2) is for circular.
6. fan box denoising structure according to claim 1, is characterized in that: described noise reduction layer (10) is made up of the silencing cotton of more than 3 layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520050238.5U CN204436885U (en) | 2015-01-26 | 2015-01-26 | Fan box denoising structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520050238.5U CN204436885U (en) | 2015-01-26 | 2015-01-26 | Fan box denoising structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204436885U true CN204436885U (en) | 2015-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520050238.5U Expired - Fee Related CN204436885U (en) | 2015-01-26 | 2015-01-26 | Fan box denoising structure |
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| Country | Link |
|---|---|
| CN (1) | CN204436885U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110195892A (en) * | 2018-02-23 | 2019-09-03 | 青岛海尔智能技术研发有限公司 | A kind of laminar flow fan and air conditioner for air-conditioning |
-
2015
- 2015-01-26 CN CN201520050238.5U patent/CN204436885U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110195892A (en) * | 2018-02-23 | 2019-09-03 | 青岛海尔智能技术研发有限公司 | A kind of laminar flow fan and air conditioner for air-conditioning |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150701 Termination date: 20160126 |
|
| EXPY | Termination of patent right or utility model |