CN103104553A - Direction-adjustable air inlet and outlet type jet fan - Google Patents
Direction-adjustable air inlet and outlet type jet fan Download PDFInfo
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- CN103104553A CN103104553A CN 201110353463 CN201110353463A CN103104553A CN 103104553 A CN103104553 A CN 103104553A CN 201110353463 CN201110353463 CN 201110353463 CN 201110353463 A CN201110353463 A CN 201110353463A CN 103104553 A CN103104553 A CN 103104553A
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Abstract
The invention relates to a direction-adjustable air inlet and outlet type jet fan which comprises a shell body, an airflow inlet end, an airflow outlet end and a motor. The shell body is fixed at the inner portion of the top wall of a tunnel through a hanging bracket. The motor is arranged in the shell body. A moving impeller is arranged on a motor shaft. A silencer I and a silencer II are symmetrically and respectively arranged at the front end and the rear end of the shell body. A diversion cone I is arranged at the lower portion of the silencer I. A diversion cone II corresponding to the diversion cone I is arranged at the lower portion of the silencer II. The front end of the silencer I is connected with a guide duct I. The rear end of the silencer II is connected with a guide duct II. The direction-adjustable air inlet and outlet type jet fan has the advantages of being simple in structure, few in airflow losses and low in noise.
Description
Technical field
The present invention relates to a kind of jet blower, relate in particular to a kind of reversible gas outlet type jet blower that advances.
Background technique
Jet blower is widely used in all kinds of highway/railway tunnel and other subterranean tunnel space at present, jet blower in actual use occasion (containing the two ends pipe silencer) all is parastate with Horizon, assembling have ground fixed with two kinds of roof suspension types.For the jet blower that is installed on tunnel top, center during assembling high (the blower fan center is to the height of tunnel top) can have a great impact for the actual thrust of blower fan, introduce the K of an assembling coefficient herein, if blower fan center height is too low, friction occurs some and tube wall and loses in the air-flow of fan outlet, and detail coefficients K value as shown in Figure 1.
In the Practical Project using process, the ordinary straight line style jet blower of structure is as shown in Figure 2 generally adopted in the home and abroad at present.Can find out from accompanying drawing 2, ordinary straight line style jet blower in use, the inlets and putlets of ventilation air-flow is effectively distinguished the air-flow extraneoas loss (20% left and right) that blower fan is caused in the outer vortex that easily produces a certain size, and eddy current clash into friction tunnel roof after also can produce additional noise (2.5dB left and right), make blower fan in effect that actual use occasion produces far below the test result under standard laboratory.Finally cause the desired air quantity of jet and thrust not to be met, noise easily exceeds standard.Therefore this class blower fan generally all exists the phenomenon of highly energy-consuming, strong noise, poor efficiency.
although there is in the world at present a company just to release a kind of Banana Type jet blower (Banana Jet) as far back as several the year before lasts, this Banana Type jet blower is directly advancing with the tunnel axis realization of tilting downwards by the Complex Different Shape pipe silencer before and after the blower fan body, outlet is carried out the break-in guiding with air-flow, but simultaneously the flow field before and after impeller has been destroyed, because must have before and after the blower fan of standard 〉=well the advancing of the straight section guarantee blower fan of 1.5 times of diameter lengths, exit flow field air-flow arrangement condition, otherwise blower fan inside will have the phenomenon generations such as secondary vortex flow, advance, the efficient of giving vent to anger is variation sharply.And this structure blower fan is because the silencing apparatus dead weight is larger, again because silencing apparatus is the cantilever type mounting structure usually, this downward-sloping structure stress situation is very complicated, the point of attachment of silencing apparatus and blower fan body must be designed very complicated and heavy ability is determined certain Security, therefore do not take into account, outside use that the exit flow break-in is tilted, with respect to ordinary straight line style jet blower, the safety of structure of this structure blower fan, interior flow field rationality are all not enough, thus use in Practical Project few.
Simultaneously, it is domestic that also someone designs a kind of follow-up-type jet blower that can freely swing at airflow direction, its principle is to utilize a cover mechanical transmission structure to make blower fan whole and tunnel axis inclination when operation, although the problem of blower fan interior flow field has solved like this, but should the machinery too complex, spacing when blower fan turns round is also problem, so its reliability and security is all not enough.
Summary of the invention
The purpose of this invention is to provide a kind of simple in structure, windage loss is few and noise is low reversiblely advances the gas outlet type jet blower.
The technical solution used in the present invention is:
a kind of reversible gas outlet type jet blower that advances, comprise housing, the airflow inlet end, airflow outlet end and motor, described housing top is fixed in the tunnel roof by suspension bracket, in described housing, motor is housed, the movable vane wheel is housed on described motor reel, it is characterized in that: described housing rear and front end is arranged with silencing apparatus I and silencing apparatus II, described silencing apparatus I below is provided with the flow deflecting cone I, described silencing apparatus II below is provided with the flow deflecting cone II corresponding with the flow deflecting cone I, described silencing apparatus I front end is connected with the guide duct I, described silencing apparatus II rear end is connected with the guide duct II, described airflow inlet end and airflow outlet end place's formation air-flow are effectively distinguished.
The import of described guide duct I and outlet diameter equate with the movable vane wheel diameter.
The import of described guide duct II and outlet diameter equate with the movable vane wheel diameter.
The length of described guide duct I and guide duct II is 0.6-0.7 times of movable vane wheel diameter.
Axis and the tunnel axis of described guide duct I and guide duct II tilt, and inclined angle alpha is 15 °≤α≤45 °.
Advantage of the present invention:
1, solve inlet/outlet when ordinary straight line style jet blower uses in the tunnel and be prone to the phenomenon that eddy current loss and noise increase, by respectively installing simple, light and handy, practical parts additional at ordinary straight line style jet blower inlets and putlets of ventilation, break-in air intake and the air-supply of inlets and putlets of ventilation have been realized.The interior flow field of the existing complete smoothness of blower fan can adapt to again the inclination of tube wall simultaneously into and out of the air port, avoided air-flow to bump and rub at inlet/outlet and tube wall, greatly reduces meaningless windage loss, guarantees the generation without additional noise.
2, having avoided the home and abroad was originally the uneasy holotype silencing apparatus of Complex Different Shape or the complicated machinery driving mechanism that the break-in problem adopts for making the jet blower inlets and putlets of ventilation, guarantee that in the situation that reach desirable airflow design parameter, its Security, reliability and Economy all are guaranteed.
Description of drawings
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is assembling values of factor K figure.
Fig. 2 is ordinary straight line style jet blower exhaust outlet vortex structure schematic diagram.
Fig. 3 is structural representation of the present invention.
Wherein: 1, guide duct I, 2, the silencing apparatus I, 3, the flow deflecting cone I, 4, housing, 5, suspension bracket, 6, the movable vane wheel, 7, motor, 8, the guide duct II, 9, the silencing apparatus II, 10, flow deflecting cone II, 11, air-flow is effectively distinguished, and 12, the airflow inlet end, 13, airflow outlet end, 14, tunnel, 15, the vortex.
Embodiment
Fig. 1 is assembling values of factor K figure, introduces the K of an assembling coefficient, if blower fan center height is too low, the air-flow of fan outlet occurs that some and tube wall rub and lose.
Fig. 2 is ordinary straight line style jet blower exhaust outlet vortex structure schematic diagram, this structure has been lacked guide duct, the inlets and putlets of ventilation air-flow is effectively distinguished the air-flow extraneoas loss (20% left and right) that blower fan is caused in the outer vortex 15 that easily produces a certain size, and eddy current also can produce additional noise (2.5dB left and right) after shock and the tunnel roof that rubs, make blower fan in effect that actual use occasion produces far below the test result under standard laboratory, finally cause the desired air quantity of jet and thrust not to be met, noise easily exceeds standard.
as shown in Figure 3, a kind of reversible gas outlet type jet blower that advances of the present invention, comprise housing 4, airflow inlet end 12, airflow outlet end 13 and motor 7, housing 4 tops are fixed in tunnel 14 roofs by suspension bracket 5, motor 7 is housed in housing 4, movable vane wheel 6 is housed on motor 7 axles, housing 4 rear and front ends are arranged with silencing apparatus I 2 and silencing apparatus II 9, silencing apparatus I 2 belows are provided with flow deflecting cone I 3, silencing apparatus II 9 belows are provided with the flow deflecting cone II 10 corresponding with flow deflecting cone I 3, silencing apparatus I 2 front ends are connected with guide duct I 1, silencing apparatus II 9 rear ends are connected with guide duct II 8, airflow inlet end 12 and airflow outlet end 13 places formation air-flow be district 11 effectively, the import of guide duct I 1 and outlet diameter and movable vane wheel 6 equal diameters, the import of guide duct II 8 and outlet diameter and movable vane wheel 6 equal diameters, the length of guide duct I 1 and guide duct II 8 is 0.6-0.7 times of movable vane wheel 6 diameters, axis and the tunnel axis of guide duct I 1 and guide duct II 8 tilt, inclined angle alpha is 30 °.
Movable vane wheel 6 front and back are linear silencing apparatus, can play soundproof effect, play again the effect that static pressure box is organized air-flow simultaneously, and air-flow reaches desirable flow field state all constant before and after impeller.Eliminate the noise flow deflecting cone simultaneously when realizing the purpose of noise elimination noise reduction, because it is the fairing shape, play good cowling effect at airflow inlet end 12, played the effect of diffusion tail cone at airflow outlet end 13, motor 7 is built-in B5 mounting structure, whole uniform flow passage, unobstructed, without hindrance has been guaranteed the efficient and low noise of blower fan integral body.
Of the present inventionly reversiblely advance the gas outlet type jet blower by after installing the break-in guide duct additional before and after original ordinary straight line style jet blower, free break-in air intake and the air-supply of blower fan have been realized, do not affect again simultaneously pneumatic structure and the mechanical structure of blower fan itself, in use, air-flow and tube wall no longer produce and bump against eddy current and noise, guarantee to realize efficient, the low noise and energy-conservation of blower fan.And the interior flow field that the break-in of also having avoided other pattern is advanced, be prone in jet blower is disorderly, the complete machine Security is not enough, complicated unreliable, the shortcoming such as Economy is not enough, reliability is not enough of gearing.
Claims (5)
1. one kind is reversiblely advanced the gas outlet type jet blower, comprise housing, the airflow inlet end, airflow outlet end and motor, described housing top is fixed in the tunnel roof by suspension bracket, in described housing, motor is housed, the movable vane wheel is housed on described motor reel, it is characterized in that: described housing rear and front end is arranged with silencing apparatus I and silencing apparatus II, described silencing apparatus I below is provided with the flow deflecting cone I, described silencing apparatus II below is provided with the flow deflecting cone II corresponding with the flow deflecting cone I, described silencing apparatus I front end is connected with the guide duct I, described silencing apparatus II rear end is connected with the guide duct II, described airflow inlet end and airflow outlet end place's formation air-flow are effectively distinguished.
2. a kind of reversible gas outlet type jet blower that advances according to claim 1, it is characterized in that: the import of described guide duct I and outlet diameter equate with the movable vane wheel diameter.
3. a kind of reversible gas outlet type jet blower that advances according to claim 1, it is characterized in that: the import of described guide duct II and outlet diameter equate with the movable vane wheel diameter.
4. according to claim 1,2 or 3 described a kind of reversible gas outlet type jet blowers that advance is characterized in that: the length of described guide duct I and guide duct II be the movable vane wheel diameter 0.6-0.7 doubly.
5. a kind of reversible gas outlet type jet blower that advances according to claim 4, it is characterized in that: axis and the tunnel axis of described guide duct I and guide duct II tilt, and inclined angle alpha is 15 °≤α≤45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110353463 CN103104553A (en) | 2011-11-10 | 2011-11-10 | Direction-adjustable air inlet and outlet type jet fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110353463 CN103104553A (en) | 2011-11-10 | 2011-11-10 | Direction-adjustable air inlet and outlet type jet fan |
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| Publication Number | Publication Date |
|---|---|
| CN103104553A true CN103104553A (en) | 2013-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110353463 Pending CN103104553A (en) | 2011-11-10 | 2011-11-10 | Direction-adjustable air inlet and outlet type jet fan |
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| CN (1) | CN103104553A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090075A (en) * | 2015-07-16 | 2015-11-25 | 莫森有限责任公司 | Energy-saving tunnel ventilation device |
| WO2021190820A1 (en) * | 2020-03-23 | 2021-09-30 | W & S Management Gmbh & Co. Kg | Jet ventilator for ventilating tunnels, jet ventilator system and method |
-
2011
- 2011-11-10 CN CN 201110353463 patent/CN103104553A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090075A (en) * | 2015-07-16 | 2015-11-25 | 莫森有限责任公司 | Energy-saving tunnel ventilation device |
| WO2021190820A1 (en) * | 2020-03-23 | 2021-09-30 | W & S Management Gmbh & Co. Kg | Jet ventilator for ventilating tunnels, jet ventilator system and method |
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Application publication date: 20130515 |