CN207349170U - Roof axial fan - Google Patents
Roof axial fan Download PDFInfo
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- CN207349170U CN207349170U CN201720568175.1U CN201720568175U CN207349170U CN 207349170 U CN207349170 U CN 207349170U CN 201720568175 U CN201720568175 U CN 201720568175U CN 207349170 U CN207349170 U CN 207349170U
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- axial fan
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Abstract
The utility model provides a kind of roof axial fan, including motor, outer air duct, the casing for housing motor, the motor are arranged in the casing, and the upper end of the casing is equipped with ventilation opening；The lower end of the outer air duct is set in the upper end of the casing；Tool is used to connect the outer air duct and the first extraneous airspace between the inner wall of the outer air duct and the outer wall of the casing.By said structure, make roof axial fan described in the utility model that there are two air stream outlets, the air outlet at middle part can just lead mouth off as pressure, and most air-flow can be blown out from the air outlet at middle part, avoid reverse flowing of air flows.
Description
Technical field
It the utility model is related to roof axial fan technical field, and in particular to a kind of roof axial fan.
Background technology
Existing roof axial fan, is substantially and only includes base 4, casing, motor, fan blade, blast cap support 31, blast cap
3 these accessories, the wind turbine of this structure, the discharge of air-flow is again between blast cap and casing, and when meeting strong wind, strong wind can be to top
The air-flow of air stream outlet form resistance, it is easy to produce situation about pouring in down a chimney, airflow reflux to interior, it is accommodating cause to be vented it is obstructed
Freely, also, security risk is caused.
Utility model content
The utility model aim is to overcome the deficiencies of the prior art and provide a kind of roof axial fan, it can be effective
Reduce distinguished and admirable situation about pouring in down a chimney.
In order to achieve the above object, the utility model uses following technical scheme：
A kind of roof axial fan, including motor, the casing for housing motor, the motor are arranged on the casing
Interior, the upper end of the casing is equipped with ventilation opening；Outer air duct is further included, the lower end of the outer air duct is set in the upper of the casing
End；Tool is used to connect the outer air duct between the inner wall of the outer air duct and the outer wall of the casing and the first extraneous ventilation is empty
Between.
Preferably, further including blast cap, the blast cap is set in the upper end of the outer air duct, the inner wall of the blast cap and institute
State between the outer wall of outer air duct to have and be used to connect the blast cap and extraneous second airspace.
Preferably, the ventilation of the casing is open to be equipped with the air door plate open for closing the ventilation rotated.
Preferably, the middle part of the ventilation opening is equipped with the supporting rack for being used for hinged air door plate, the air door plate is hinged
In support frame as described above.
Preferably, the hinged end of the air door plate is higher than the free end of the air door plate.
Preferably, first airspace is to enclose air passage around the one of the casing outer wall, second ventilation is empty
Between be around the exogenous wind drum outer wall one enclose air passage.
Preferably, further include a position-limit mechanism for being used to limit the air door plate turned position.
Preferably, the position-limit mechanism includes limited block, the limited block is arranged in the outer air duct.
Preferably, the lower part of the motor is provided with protection network, the protection network is fixed in the casing.
Compared with prior art, the utility model has the advantages that：
By the first airspace and the upper end air outlet of outer air duct, have roof axial fan described in the utility model
Have two air stream outlets, one on wind turbine top, one in the middle part of wind turbine, the space between outer air duct and casing.Wind turbine exists
Roof operates, and when meeting strong wind, strong wind can form resistance to the air-flow of the air stream outlet on top, and at this time, the air outlet at middle part is just
Mouth can be led off as pressure, most air-flow can be blown out from the air outlet at middle part, without causing reverse flowing of air flows.And
Air door plate closes after fan blade shuts down, prevents rainwater from getting in automatically under self gravitation.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is distinguished and admirable schematic diagram；
Fig. 3 is the structure diagram (not having blast cap) of the utility model.
In figure：
1-casing；11-motor；12-air door plate；13-protection network；14-fan blade；15-supporting rack；2-outer air duct；
21-limited block；3-blast cap；31-blast cap supports；4-base；5-air passage.
Embodiment
In conjunction with attached drawing, the utility model is described in further detail with specific embodiment.
Embodiment 1
Refering to shown in Fig. 1 to Fig. 2, a kind of roof axial fan described in the utility model, including plinth 4, motor
What the 11st, outer air duct 2, fan blade 14, blast cap 3 and plinth 4 welded together is used to house the casing 1 of motor 11, is welded on machine
Motor plate in shell 1.Motor 11 is fixed by bolts on motor plate, and fan blade 14 is directly installed on motor 11.
It is open that the upper end of casing 1 is equipped with ventilation；The lower end of outer air duct 2 is set in the upper end of casing 1, and outer air duct 2 passes through logical
Wind opening is communicated with casing 1；Blast cap 3 is set in the upper end of outer air duct 2, and blast cap 3 is communicated with outer air duct 2.Blast cap 3 passes through blast cap branch
Support 31 is connected with outer air duct 2.
Have between the inner wall of outer air duct 2 and the outer wall of casing 1 empty for connecting outer air duct 2 and the first extraneous ventilation
Between, have between the inner wall of blast cap 3 and the outer wall of outer air duct 2 and be used to connect blast cap and the second extraneous airspace.As one
The preferable mode of kind, the first airspace are to enclose air passage 5 around the one of 1 outer wall of casing, and the first airspace is around outer air duct 2
One circle air passage 5 of outer wall.
The open air door plate 12 for enclosed ventilation opening for being equipped with rotatable (rotating upwardly and downwardly) of the ventilation of casing 1.Ventilation
Open middle part is equipped with the supporting rack 15 for being used for hinged air door plate 12, and air door plate 12 is hinged on supporting rack 15.The hinge of air door plate 12
Connect free end of the end higher than air door plate 12.
Further include a position-limit mechanism for being used to limit 12 turned position of air door plate, as a preferred mode, position restrainer
Structure includes limited block, and limited block is arranged in outer air duct 2.
The lower part of motor 11 is provided with protection network 13, and protection network 13 is fixed in casing 1.By setting protection network 13, keep away
Exempt from indoor big part debris to be involved in wind turbine, avoid wind turbine from being damaged.
The use principle of the utility model：The utility model is installed on roof, starts motor 11, motor 11 is run, wind
Leaf 14 produces air-flow from bottom to top, and air-flow pushes the air door plate 12 installed in outer 2 upper end of air duct open, and air door plate 12 opens up,
Encounter limited block and stop, air-flow continues up, and after encountering blast cap 14, air-flow turns to downwards along the brim of a hat of blast cap 14, passes through
Vent passages blowout between blast cap 14 and outer air duct 2 is outdoor, forms an air draft path from inside to outside.When running into the big rainy day
Gas, shut down motor 11, and air draft air-flow stops, and air door plate 12 closes under self gravitation, prevents rainwater from getting in.
In the utility model, by setting two airspaces, there is roof axial fan described in the utility model
Two air stream outlets, one on wind turbine top, the space between blast cap and outer air duct 2, one in the middle part of wind turbine, be outer air duct
Space between 2 and casing 1.Wind turbine operates on roof, and when meeting strong wind, strong wind can be formed the air-flow of the air stream outlet on top
Resistance, at this time, the air outlet at middle part can just lead mouth off as pressure, and most air-flow can be blown from the air outlet at middle part
Go out, without causing reverse flowing of air flows.And air door plate 12 closes automatically after fan blade 14 shuts down under self gravitation, prevent
Rainwater is got in.
Embodiment 2
In addition to lower structure, other structures are same as Example 1:
As shown in fig.3, a kind of roof axial fan described in the present embodiment, is not provided with blast cap.
At this time, the utility model still has two air stream outlets, and one is outer 2 upper end air outlet of air duct, and one in wind
In the middle part of machine, the airspace between outer air duct 2 and casing 1.Wind turbine operates on roof, and when meeting strong wind, strong wind can be to top
Air stream outlet air-flow formed resistance, at this time, the air outlet at middle part can just lead mouth off as pressure, and most air-flow is just
It can be blown out from the air outlet at middle part, without causing reverse flowing of air flows.
The utility model is not limited to the above embodiment, if various changes or modifications to the utility model do not take off
From the spirit and scope of the utility model, if these modification and variations belong to the claims and equivalents of the utility model
Within the scope of, then the utility model is also intended to comprising these changes and changes.
Claims (9)
1. a kind of roof axial fan, including motor, the casing for housing motor, the motor are arranged in the casing,
It is open that the upper end of the casing is equipped with ventilation；It is characterized in that, further include outer air duct, the lower end of the outer air duct is set in described
The upper end of casing；Tool is used to connecting the outer air duct and extraneous the between the inner wall of the outer air duct and the outer wall of the casing
One airspace.
2. roof axial fan according to claim 1, it is characterised in that further include blast cap, the blast cap is set in institute
The upper end of outer air duct is stated, has between the inner wall of the blast cap and the outer wall of the outer air duct and is used to connect the blast cap and the external world
Second airspace.
3. roof axial fan according to claim 1 or 2, it is characterised in that open be equipped with of the ventilation of the casing turns
Dynamic is used to close the open air door plate of the ventilation.
4. roof axial fan according to claim 3, it is characterised in that the open middle part of the ventilation, which is equipped with, to be used to cut with scissors
Give a dinner for a visitor from afar the supporting rack of door-plate, the air door plate is hinged on support frame as described above.
5. roof axial fan according to claim 4, it is characterised in that the hinged end of the air door plate is higher than the wind
The free end of door-plate.
6. roof axial fan according to claim 2, it is characterised in that first airspace is around the machine
One circle air passage of shell outer wall, second airspace are to enclose air passage around the one of the exogenous wind drum outer wall.
7. roof axial fan according to claim 3, it is characterised in that further include one and be used to limit the air door plate turn
The position-limit mechanism of dynamic position.
8. roof axial fan according to claim 7, it is characterised in that the position-limit mechanism includes limited block, described
Limited block is arranged in the outer air duct.
9. roof axial fan according to claim 1, it is characterised in that the lower part of the motor is provided with protection network,
The protection network is fixed in the casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720568175.1U CN207349170U (en) | 2017-05-19 | 2017-05-19 | Roof axial fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720568175.1U CN207349170U (en) | 2017-05-19 | 2017-05-19 | Roof axial fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207349170U true CN207349170U (en) | 2018-05-11 |
Family
ID=62361468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720568175.1U Active CN207349170U (en) | 2017-05-19 | 2017-05-19 | Roof axial fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207349170U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108426336A (en) * | 2018-05-31 | 2018-08-21 | 深圳市万居科技股份有限公司 | A kind of dual-purpose Wind discharging hat |
| CN108626834A (en) * | 2018-05-31 | 2018-10-09 | 深圳市万居科技股份有限公司 | A kind of multi-purpose Wind discharging hat |
-
2017
- 2017-05-19 CN CN201720568175.1U patent/CN207349170U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108426336A (en) * | 2018-05-31 | 2018-08-21 | 深圳市万居科技股份有限公司 | A kind of dual-purpose Wind discharging hat |
| CN108626834A (en) * | 2018-05-31 | 2018-10-09 | 深圳市万居科技股份有限公司 | A kind of multi-purpose Wind discharging hat |
| CN108426336B (en) * | 2018-05-31 | 2023-09-29 | 深圳市万居科技股份有限公司 | Dual-purpose exhaust cap |
| CN108626834B (en) * | 2018-05-31 | 2023-09-29 | 深圳市万居科技股份有限公司 | Multipurpose exhaust cap |
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