CN203548284U - Ventilation fan - Google Patents
Ventilation fan Download PDFInfo
- Publication number
- CN203548284U CN203548284U CN201320743127.3U CN201320743127U CN203548284U CN 203548284 U CN203548284 U CN 203548284U CN 201320743127 U CN201320743127 U CN 201320743127U CN 203548284 U CN203548284 U CN 203548284U
- Authority
- CN
- China
- Prior art keywords
- fan
- rotating shaft
- shell
- inner sleeve
- housing
- 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 - Fee Related
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a ventilation fan. The ventilation fan comprises a shell, the front end of the shell is an air inlet end, the back end of the shell is an air outlet end, and a first fan and a motor corresponding to the air inlet end are arranged in the shell. The motor comprises a rotating shaft connected with the first fan, the position, located at the front end of the first fan, of the rotating shaft is provided with a second fan, and a gap exists between the first fan and the second fan. The second fan comprises an inner sleeve and second fan blades, wherein the rotating shaft is sleeved with the inner sleeve, the second fan blades are fixed to the inner sleeve, and the inner sleeve and the rotating shaft are fixed through bolts. A semi-circular protective cover extends out of the upper end of the shell in the air outlet end direction, and edge of one side, opposite to the shell, of the protective cover warps upwards. Through the arrangement of the second fan, the first fan can be prevented from being damaged, and the arranged second fan is low in cost, good in noise reduction effect, simple in structure, convenient to produce, easy to install and dismantle and beneficial for being cleaned. Through the arrangement of the protective cover, the phenomenon that rainwater or other matters enter the ventilation fan and cause damage on the motor or the fans can be avoided.
Description
Technical field
The utility model relates to mechanical engineering field, especially relates to a kind of ventilator.
Background technique
At present for the blower fan ventilating, generally comprise housing and the first fan and the motor being connected with the first fan be located in housing, and blower fan in use easily produces noise, in order to reduce noise, silencing apparatus is set and reduces noise, but this arranges and has increased cost, and it is good not to reduce noise result, wind still can impact the first fan and produce noise, and the first fan also easily damages because wind-force is excessive, and acoustic wave filter structure complexity, remove and install difficulty, not easy to clean.In use, rainwater or other materials can enter in blower fan blower fan, cause motor and fan to damage.
Model utility content
The utility model, in order to overcome the deficiencies in the prior art, provides one to reduce noise result traitor, avoids the ventilator of rain damage blower fan.
To achieve these goals, the utility model by the following technical solutions: a kind of ventilator, comprise housing, the front end of described housing is air intake, the rear end of housing is outlet air end, is provided with first fan and the motor corresponding with air intake in housing; This motor comprises the rotating shaft that connects the first fan, in described rotating shaft, be positioned at the first fan front end and be provided with the second fan, between this first fan and the second fan, be provided with gap, described the second fan comprise the inner sleeve that is sheathed in rotating shaft and be fixed in the second fan sheet of putting, described inner sleeve is fixed by latch and rotating shaft; Housing upper end edge outlet air end direction is extended semicircular protective cover, and the side margin that this protective cover is relative with housing is upturned.
As preferably, described the first fan comprises the first fan sheet, and quantity of this first fan sheet and described the second fan sheet equates.
In sum, the utlity model has following advantage: the workload that this second fan is set has shared the first fan, can also change wind direction and the wind-force of wind, reduced the impact of wind to the first fan, avoid causing because wind-force is excessive the first fan to damage, reduced the noise that the first fan and wind effect produce simultaneously; The second fan cost of this setting is low, reduces noise result traitor, and simple in structure, convenient for production, installing/dismounting is easy, is conducive to the second fan to clean; This protective cover is set and avoids rainwater or other materials to enter in blower fan, cause motor or fan to damage.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
In order to make those skilled in the art person better understand the utility model scheme, below in conjunction with the accompanying drawing in the utility model embodiment, the technological scheme in the utility model embodiment is carried out to clear, complete description.
As shown in Figure 1, a kind of ventilator, comprises housing 1, and the front end of described housing 1 is air intake 11, and the rear end of housing 1 is outlet air end 12, is provided with first fan 2 and the motor corresponding with air intake 11 in housing 1; This motor comprises the rotating shaft that connects the first fan 2, is positioned at the first fan 2 front ends and is provided with the second fan 4 in described rotating shaft, between this first fan 2 and the second fan 4, is provided with gap, and this second fan 4 can rotate with rotating shaft; In rotation process, this second fan is set and has shared the workload of the first fan, and can also change wind direction and the wind-force of wind, reduced the impact of wind to the first fan, avoid causing because wind-force is excessive the first fan to damage, reduced the noise that the first fan and wind effect produce simultaneously.
Concrete, described the second fan 4 comprise the inner sleeve being sheathed in rotating shaft and be fixed in the second fan sheet of putting, described inner sleeve is fixed by latch and rotating shaft; The second fan cost of this setting is low, reduces noise result good, and simple in structure, convenient for production, installing/dismounting is easy, is conducive to the second fan to clean.
Further, described housing 1 upper end edge outlet air end 12 directions are extended semicircular protective cover 5, and the side margin that this protective cover 5 is relative with housing 1 is upturned; This protective cover is set and avoids rainwater or other materials to enter in blower fan, cause motor or fan to damage.
In order to make ventilation effect and noise-reduction best results, described the first fan 2 comprises the first fan sheet, and the quantity of this first fan sheet and described the second fan sheet equates.
Obviously, described embodiment is only a part of embodiment of the present utility model, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment who obtains under creative work prerequisite, all should belong to the scope of the utility model protection.
Claims (2)
1. a ventilator, comprise housing (1), the front end of described housing (1) is air intake (11), the rear end of housing (1) is outlet air end (12), is provided with first fan (2) and the motor corresponding with air intake (11) in housing (1); This motor comprises the rotating shaft that connects the first fan (2), it is characterized in that: in described rotating shaft, be positioned at the first fan (2) front end and be provided with the second fan (4), between this first fan (2) and the second fan (4), be provided with gap, described the second fan (4) comprise the inner sleeve that is sheathed in rotating shaft and be fixed in the second fan sheet of putting, described inner sleeve is fixed by latch and rotating shaft; Housing (1) upper end edge outlet air end (12) direction is extended semicircular protective cover (5), and the side margin that this protective cover (5) is relative with housing (1) is upturned.
2. ventilator according to claim 2, is characterized in that: described the first fan (2) comprises the first fan sheet, and the quantity of this first fan sheet and described the second fan sheet equates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320743127.3U CN203548284U (en) | 2013-11-14 | 2013-11-14 | Ventilation fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320743127.3U CN203548284U (en) | 2013-11-14 | 2013-11-14 | Ventilation fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203548284U true CN203548284U (en) | 2014-04-16 |
Family
ID=50466408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320743127.3U Expired - Fee Related CN203548284U (en) | 2013-11-14 | 2013-11-14 | Ventilation fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203548284U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953179A (en) * | 2018-07-06 | 2018-12-07 | 许春燕 | A kind of ventilation blower |
-
2013
- 2013-11-14 CN CN201320743127.3U patent/CN203548284U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953179A (en) * | 2018-07-06 | 2018-12-07 | 许春燕 | A kind of ventilation blower |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203548284U (en) | Ventilation fan | |
| CN203892263U (en) | Air purifier turbine structure with pressure boosting and noise reduction functions | |
| CN203023086U (en) | Single-motor double-impeller fan | |
| CN202628611U (en) | Cooling fan of air conditioner outdoor unit | |
| CN204458427U (en) | Blower fan and range hood | |
| CN201963600U (en) | Blade of axial flow fan | |
| CN201475038U (en) | Fully-mixed flow impeller | |
| CN203548359U (en) | Efficient blower fan | |
| CN203463308U (en) | Special blower fan for automatic car washer | |
| CN207420962U (en) | A kind of aerofoil fan and air-conditioner outdoor unit for air-conditioner outdoor unit | |
| CN202646159U (en) | Volute of axial-flow fan | |
| CN201757445U (en) | Range hood fan set with commutating function | |
| CN204984995U (en) | Range hood | |
| CN203548278U (en) | Centrifugal fan | |
| CN203548279U (en) | Sound attenuating fan | |
| CN203362558U (en) | Suction fan for secondary lead process | |
| CN208763965U (en) | A kind of modified form jet blower | |
| CN203560118U (en) | Centrifugal fan | |
| CN203430863U (en) | Pressurizing fan | |
| CN201310472Y (en) | Water flow fan | |
| CN203926070U (en) | Wind Volume blower fan | |
| CN201258874Y (en) | Fan blade in axial fan | |
| CN205876758U (en) | Airfoil fan multiple wing formula centrifugal fan | |
| CN202768507U (en) | Wind-guiding member and no-bladed fan with the same | |
| CN203604220U (en) | Combined draught fan |
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: 20140416 Termination date: 20141114 |
|
| EXPY | Termination of patent right or utility model |