CN202867274U - Bi-directional reversible jet fan - Google Patents
Bi-directional reversible jet fan Download PDFInfo
- Publication number
- CN202867274U CN202867274U CN 201220535106 CN201220535106U CN202867274U CN 202867274 U CN202867274 U CN 202867274U CN 201220535106 CN201220535106 CN 201220535106 CN 201220535106 U CN201220535106 U CN 201220535106U CN 202867274 U CN202867274 U CN 202867274U
- Authority
- CN
- China
- Prior art keywords
- jet fan
- reversible jet
- top wall
- air
- directional
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a bi-directional reversible jet fan. The bi-directional reversible jet fan comprises a wind tube, a motor, and an impeller connected to the output shaft of the motor, wherein each end of the wind tube is connected with a noise reduction tube, the wind tube is connected to a channel top wall through a pair of hinges, and two limit stops are respectively disposed on the channel top wall which is positioned above the noise reduction tube. The bi-directional reversible jet fan is rotatingly connected to the channel top wall through the hinges. When the bi-directional reversible jet fan works, the gravity center of the bi-directional reversible jet fan moves towards the air inlet through air reverse thrust, so that the outlet of the bi-directional reversible jet fan is downward, and then the jet stream blows to the channel top wall horizontally downward forming an angle with the horizontal surface, thereby avoiding the rubbing between air and the channel top wall, improving greatly the ventilation effect of the channel and reducing the noise of the bi-directional reversible jet fan through enabling most air to blow downward to the channel.
Description
Technical field
The utility model relates to a kind of ventilation equipment, relates to specifically a kind of bidirectional reversible jet-type propeller fan that is installed on the subway tunnel top.
Background technique
In the subway tunnel, for waste gas such as the carbon dioxide in the discharge tunnel, sulfur dioxide, introduce outside fresh air, usually all needing to install successively some discharge flow fans on the roof in tunnel ventilates, simultaneously, for realizing two-way ventilation, jet blower adopts the form of bidirectional reversible usually.Noise during for the reduction fan operation, by connecting respectively a silencing apparatus cylindraceous on two flanges importing and exporting at jet blower, silencing apparatus also has the effect of air conducting tube simultaneously.We know that air is in the pressurization through draught fan impeller, air-flow after going out from exhaust outlet is disperse state, and jet blower is because being fixedly mounted on the position near the tunnel roof, inevitably understand the roof that some blows to the tunnel from the high velocity air that exhaust outlet flows out, flow velocity reduced rapidly after friction occured for this part high velocity air and tunnel roof, thereby aggravated the wind speed loss of jet blower, simultaneously, carbon dioxide in the tunnel, the waste gas density such as sulfur dioxide are larger, usually deposit upper bottom in the tunnel, and the wind major part that jet blower blows out concentrates on the first half in tunnel, causes the effect of ventilation relatively poor.Can produce larger noise when in addition, the air-flow of high speed and tunnel roof rub.
The model utility content
For overcoming defects, the utility model aims to provide a kind of jet blower that can improve to greatest extent to ventilation effect in the tunnel, has again more low noise bidirectional reversible jet blower simultaneously.
For achieving the above object, the technical solution adopted in the utility model is: a kind of bidirectional reversible jet blower, comprise air duct, a motor and be connected to impeller on the motor output shaft, two ends of described air duct are connected with respectively a hush pipe, on the tunnel roof, the tunnel roof directly over the described hush pipe is fixed with respectively a positive stop 7 to described air duct by a secondary chain connection.
When described arbitrary hush pipe and positive stop offseted, the axis of blower fan and substantially horizontal were an angle a, a=8-12 degree.
Described positive stop is that elastic material is made.
Adopted bidirectional reversible jet blower of the present utility model, by hinge blower fan is rotatably connected on the tunnel roof, when jet blower is worked, air-flow the reaction thrust effect under, the blower fan center of gravity moves to the intake grill direction, thereby so that the exhaust outlet of blower fan down, the high velocity air that jet blower blows out is the downward angle of level and blows to the tunnel, avoided on the one hand the friction of air-flow and tunnel roof, make on the other hand most of air-flow blow to the lower half portion in tunnel, improve greatly the ventilation effect in tunnel, simultaneously, also reduced the noise of blower fan.And the setting of positive stop, the exhaust outlet that has guaranteed blower fan can only be a best angle a and blow out.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Structural representation when Fig. 2 is jet blower forward work of the present utility model;
Structural representation when Fig. 3 is jet blower reverse operation of the present utility model.
Among the figure: 1-air duct, 2-motor, 3-impeller, 4-hush pipe, 5-hinge, 6-tunnel roof, 7-positive stop, 8-forward exhaust outlet, the reverse exhaust outlet of 9-.
Embodiment
As shown in Figure 1, the utility model discloses a kind of bidirectional reversible jet blower, comprise an air duct 1, motor 2 and the impeller 3 that is connected on motor 2 output shafts, two ends of described air duct 1 are connected with respectively a hush pipe 4, forward and reverse by motor 2, can realize the bidirectional reversible work of jet blower, in sum, basically identical with the structural type of existing bidirectional reversible jet blower, the innovative point of bidirectional reversible jet blower of the present utility model is that mainly described air duct 1 is connected on the tunnel roof 6 by a secondary hinge 5, connect by hinge 5, so that jet blower can be done the rotation centered by hinge 5, the axis of jet blower is not level when guaranteeing not work, on described hinge 5 should be connected to directly over the center of gravity of jet blower; Tunnel roof 6 directly over the described hush pipe 4 is fixed with respectively a positive stop 7.
As shown in Figure 2, when motor 2 forward rotation of jet blower, jet blower is the forward working state, air-flow the reaction thrust effect under, the blower fan center of gravity moves to reverse exhaust outlet 9 directions, and jet blower is rotated take hinge 5 as fulcrum, blower fan is downward-sloping to forward exhaust outlet 8 directions, when blower fan tilted to several angle, oppositely the hush pipe 4 at exhaust outlet 9 places offseted with the positive stop 7 of its top, so that blower fan can't be downward-sloping to forward exhaust outlet 8 directions again.
In like manner, as shown in Figure 3, when motor 2 backward rotation of jet blower, jet blower is the reverse operation state, air-flow the reaction thrust effect under, the blower fan center of gravity moves to forward exhaust outlet 8 directions, jet blower is rotated take hinge 5 as fulcrum, and blower fan is downward-sloping to reverse exhaust outlet 9 directions, when blower fan tilts to several angle, the hush pipe 4 at forward exhaust outlet 8 places offsets with the positive stop 7 of its top, so that blower fan can't be downward-sloping to reverse exhaust outlet 9 directions again.
When described arbitrary hush pipe 4 offseted with positive stop 7, the axis of blower fan can be an angle a with substantially horizontal, and according to repeatedly test, usually angle a being made as the 8-12 degree is best angle.
Damage when preventing that hush pipe 4 and positive stop 7 the are inconsistent outer wall of hush pipe 4 also is simultaneously to offset when triggering between excessive in order to reduce hush pipe 4 and positive stop 7, and described positive stop 7 can be made of elastic material.
Claims (3)
1. bidirectional reversible jet blower, comprise an air duct (1), motor (2) and be connected to impeller (3) on motor (2) output shaft, two ends of described air duct (1) are connected with respectively a hush pipe (4), it is characterized in that described air duct (1) is connected on the tunnel roof (6) by a secondary hinge (5), the tunnel roof (6) directly over the described hush pipe (4) is fixed with respectively a positive stop (7).
2. bidirectional reversible jet blower according to claim 1 is characterized in that described arbitrary hush pipe (4) and positive stop (7) when offseting, and the axis of blower fan and substantially horizontal are an angle a, a=8-12 degree.
3. bidirectional reversible jet blower according to claim 1 is characterized in that described positive stop (7) is the elastic material making.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220535106 CN202867274U (en) | 2012-10-19 | 2012-10-19 | Bi-directional reversible jet fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220535106 CN202867274U (en) | 2012-10-19 | 2012-10-19 | Bi-directional reversible jet fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202867274U true CN202867274U (en) | 2013-04-10 |
Family
ID=48033997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220535106 Expired - Lifetime CN202867274U (en) | 2012-10-19 | 2012-10-19 | Bi-directional reversible jet fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202867274U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130971A (en) * | 2019-06-19 | 2019-08-16 | 湖南城市学院 | A kind of construction ventilation of tunnel device |
| CN110953174A (en) * | 2019-12-11 | 2020-04-03 | 深圳市创智联环保设备有限公司 | Jet fan capable of automatically steering |
-
2012
- 2012-10-19 CN CN 201220535106 patent/CN202867274U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130971A (en) * | 2019-06-19 | 2019-08-16 | 湖南城市学院 | A kind of construction ventilation of tunnel device |
| CN110953174A (en) * | 2019-12-11 | 2020-04-03 | 深圳市创智联环保设备有限公司 | Jet fan capable of automatically steering |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2016197747A1 (en) | Air conditioner | |
| CN204783838U (en) | Nested formula air -out structure of wind -tunnel | |
| CN202867274U (en) | Bi-directional reversible jet fan | |
| CN207437406U (en) | A kind of mining noise reduction fans | |
| CN105276650A (en) | Range hood with auxiliary air inlet function | |
| CN202732487U (en) | Bidirectional reversed jet fan | |
| CN209279340U (en) | A kind of jetting type thrust ventilation smoke extraction system | |
| CN104534494B (en) | Mixed flow fan type integrated dust remover | |
| CN207106841U (en) | A kind of ship noise reduction ventilator | |
| CN215805258U (en) | Double-air-inlet centrifugal ventilator | |
| CN206111619U (en) | Ultra -thin multi -functional air supply exhaust electrical apparatus | |
| CN104390266B (en) | Wall hanging type air conditioner | |
| CN213066352U (en) | Air duct structure, movable air conditioner and exhaust fan and central air conditioner in public catering place | |
| CN105157154B (en) | A kind of room air stagnant area ventilation unit of economize on electricity | |
| CN209207199U (en) | A kind of polishing departement break flour exhaust system | |
| CN206845562U (en) | garage induced fan | |
| CN221257192U (en) | Two-way blower of blowing | |
| CN206469421U (en) | A kind of self-priming outdoor exhaust outlet | |
| CN205876758U (en) | Airfoil fan multiple wing formula centrifugal fan | |
| CN203548359U (en) | Efficient blower fan | |
| CN207661847U (en) | A kind of double stage tandem denoising structure and its range hood | |
| CN207647845U (en) | Backward tilt wind turbine is pressed in a kind of double suction mouth | |
| CN105298594A (en) | Smoke discharging and flow jetting device | |
| CN205669864U (en) | Air supply system and indoor unit and air conditioner using same | |
| CN106314084B (en) | A kind of air conditioning for automobiles HVAC wind deflectors |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130410 |