CN206571710U - A kind of anti-backflow exhaust fan - Google Patents
A kind of anti-backflow exhaust fan Download PDFInfo
- Publication number
- CN206571710U CN206571710U CN201720025881.1U CN201720025881U CN206571710U CN 206571710 U CN206571710 U CN 206571710U CN 201720025881 U CN201720025881 U CN 201720025881U CN 206571710 U CN206571710 U CN 206571710U
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- China
- Prior art keywords
- casing
- valve plate
- end ring
- exhaust fan
- torsion spring
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Abstract
The utility model is related to ventilation unit technical field, especially a kind of anti-backflow exhaust fan.It includes casing and fan, the check-valves of the air outlet for covering casing is equiped with casing, check-valves includes end ring set, torsion spring and two panels valve plate, end ring set is socketed in the air outlet of casing, wherein one radial centre lines that two panels valve plate is respectively positioned in the collar extension of end ring set and covered using end ring are distributed as boundary in mirror image, every valve plate turns to be connected with end ring set axle, be provided with set axle on valve plate, the body fits of the torsion spring on set axle, one end is connected in the outside wall surface of one of valve plate, the other end is connected in the outside wall surface of another valve plate.In the presence of blast or torsion spring elastic force, valve plate can be rotated relative to end ring set, so as to open or close the air outlet of casing, and then realize irreversibly delivering for foul indoor air, it is to avoid extraneous air pours in down a chimney；Its is simple and compact for structure, with very strong practical value and market popularization value.
Description
Technical field
The utility model is related to ventilation unit technical field, especially a kind of anti-backflow exhaust fan.
Background technology
Exhaust fan, as a kind of indoor ventilation unit with outdoor carry out air exchange, is widely used in bath as a kind of
In many places such as room, toilet, kitchen, office, to remove the foul atmosphere of interior, the air matter in site surrounding is reached
The regulating effect of amount and aerial temperature and humidity.Existing exhaust fan is not satisfactory due to structure design, causes its generally existing
Following problem：1st, when outside wind pressure is excessive, it is easy to cause to need to flow back from the foul atmosphere that interior is discharged originally
Or the problem of water conservancy diversion；2nd, room air can only typically be extracted from specific direction, air draft is reduced to a certain extent
Effect；3rd, structure is relative complex, it is inconvenient with dismounting to install.
Utility model content
The deficiency existed for above-mentioned prior art, the purpose of this utility model is to provide a kind of anti-backflow exhaust fan.
To achieve these goals, the utility model is adopted the following technical scheme that：
A kind of anti-backflow exhaust fan, it includes being equiped with a use on casing and the fan being installed in casing, the casing
In the check-valves for the air outlet for covering casing, the check-valves includes end ring set, two panels valve plate and at least one torsion spring, described
End ring set is socketed in the air outlet of casing, and valve plate described in two panels is respectively positioned on wherein one covered in the collar extension of end ring set and with end ring
Bar radial centre lines are boundary in mirror image distribution, the parallel side wall in the line of demarcation on the every valve plate and between two panels valve plate
Two ends radially extend after be each formed with an axostylus axostyle, the end ring is put and the position of position relative with every axostylus axostyle is opened up
There is one to be used for the axis hole for corresponding axostylus axostyle contraposition sleeve, the line of demarcation on the valve plate and between two panels valve plate is parallel
Be additionally provided with set axle on the wall of side, the body fits of the torsion spring on set axle, one end be connected to the outside wall surface of one of valve plate
The upper, other end is connected in the outside wall surface of another valve plate.
Preferably, the set hole that sleeve is carried out for the end for torsion spring is provided with the outside wall surface of the every valve plate.
Preferably, the torsion spring is two, and two torsion springs are symmetrical as boundary using the axle center that end ring covers.
Preferably, it is also formed with the collar extension that the end ring covers and positioned at the rear wall surface side of valve plate for the rear wall for valve plate
The positive stop strip that face offsets.
Preferably, the connection that the inwall of several and the air outlet of casing offsets is also formed with the perisporium of end ring set
Ear.
Preferably, the perisporium of the air inlet of the casing is formed with a face-piece, the air intake of the casing after radially extending
Mouth side is provided with the decoration deflector of one and face-piece parallel distributed, and the decoration deflector passes through some support columns and face-piece phase
Even.
Preferably, the fan includes drive motor and the flabellum being socketed on the output shaft of drive motor, the casing
One is inside additionally provided with casing in the motor fixed cover being coaxially distributed, the motor fixed cover is fixed by some around motor
The inwall for covering equally distributed support arm and casing is connected as a single entity, and the drive motor is set in motor fixed cover.
Preferably, several are provided with the wall of the face-piece hanging hole is installed.
As a result of such scheme, in the presence of blast or torsion spring elastic force, valve plate can cover relative to end ring to be carried out
Rotate, so as to open or close the air outlet of casing, and then realize irreversibly delivering for foul indoor air, it is to avoid extraneous air
Pour in down a chimney；Its is simple and compact for structure, with very strong practical value and market popularization value.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the utility model embodiment；
Fig. 2 is the structural decomposition diagram of the utility model embodiment；
Fig. 3 is the structural decomposition diagram of the check-valves of the utility model embodiment.
Embodiment
Embodiment of the present utility model is described in detail below in conjunction with accompanying drawing, but the utility model can be by right
It is required that the multitude of different ways for limiting and covering is implemented.
As shown in Figure 1 to Figure 3, a kind of anti-backflow exhaust fan that the utility model embodiment is provided, including casing 1 and installing
Fan in casing 1, is equiped with a check-valves for being used to cover the air outlet of casing 1 on casing 1, and check-valves includes end ring
Set 2, two panels valve plate 3 and at least one torsion spring 4；Wherein, end ring set 2 is socketed in the air outlet of casing 1, and two panels valve plate 3 is equal
Wherein one radial centre lines in 2 collar extension and covering 2 using end ring are covered positioned at end ring (to can be understood as in mirror image distribution as boundary：
The shape of the global shape that two panels valve plate 3 is constituted and the air outlet of casing 1 is essentially identical, is put in the way of covering or coincideing
In in the air outlet of casing 1), the two ends of the parallel side wall in line of demarcation on every valve plate 3 and between two panels valve plate 3 are made
An axostylus axostyle 5 is each formed with after radially extending (to can be understood as：Axostylus axostyle 5 is by every valve plate 3 and positioned at the phase point of two panels valve plate 3
What boundary or the two ends of adjacent side wall were formed after stretching out), cover on 2 and equal with respect to the position of position with every axostylus axostyle 5 in end ring
Offer one be used for for corresponding axostylus axostyle 5 contraposition sleeve axis hole 6, while the boundary on valve plate 3 and between two panels valve plate 3
Be additionally provided with set axle 7 on the parallel side wall of line, the body fits of torsion spring 4 on set axle 7, one end be connected to one of valve plate
In 3 outside wall surface, the other end is connected in the outside wall surface of another valve plate 3.Thus, the alignment of axostylus axostyle 5 and axle sleeve 7 can be with
Make every valve plate 3 cover 2 axles with end ring to turn to be connected and when fan is in the state stopped, elastic force of the two panels valve plate 3 in torsion spring 4
It is sealed on just on the air outlet of casing 1 under effect, after starting fan, the blast produced by the air outlet side of casing 1 can be big
In the elastic force of torsion spring 4 so that two panels valve plate 3 is relatively rotated, so that the air outlet of casing 1 be opened to realize that air is unidirectionally defeated
Send；When blast when fan stops or on the outside of the air outlet of casing 1 is more than the blast that fan is formed, valve plate 3 can be by machine
The air outlet of shell 1 is closed, so as to avoid extraneous air from pouring in down a chimney or inner air output.
To ensure that the end of torsion spring 4 can be firmly fixed in the outside wall surface of corresponding valve plate 3, in every valve plate 3
Outside wall surface on be provided with for for torsion spring 4 end carry out sleeve set hole 8.
To ensure that valve plate 3 can smoothly be relatively rotated in the presence of blast or torsion spring 4 relative to end ring set 2
Or it is opposite rotate, the torsion spring 4 of the present embodiment is set to two altogether, and two torsion springs 4 cover 2 axle center using end ring and claimed point as bound pair
Cloth, set axle 7 can be now set respectively on two valve plates 3, and the body of two torsion springs 4 is socketed on corresponding set axle 7 respectively.
For avoid because the blast in the outside of exhaust fan air outlet is excessive and caused by valve plate 3 turn in casing 1, so as to cause
The problem of unidirectional cutoff function of check-valves fails, is also formed with the collar extension of end ring set 2 and positioned at the rear wall surface side of valve plate 3
The positive stop strip 9 offseted for the rear surface for valve plate 3.
To enable whole check-valves to be assemblied in securely in the air outlet of casing 1, covered in end ring and go back shape on 2 perisporium
Into the engaging lug 10 for thering are several inwalls with the air outlet of casing 1 to offset.Thus, will using handwares such as screw, screws
End ring set 2 is made removably to be fixedly connected with engaging lug 10.
To optimize the structure of whole exhaust fan, the entirety of the casing 1 of the present embodiment can be using the structure for being similar to circular tube shaped
Form, the perisporium of the air inlet of casing 1 is formed with a face-piece 11 after radially extending (it can be as the case may be using such as
The polygon or circle etc. such as rectangle shape), the air inlet side of casing 1 is provided with the decoration of one and the parallel distributed of face-piece 11
Deflector 12, decoration deflector 12 is connected by some support columns 13 with face-piece 11.Thus, indoor air is in the negative of fan
Pressure effect is lower to be entered via the gap between decoration deflector 12 and face-piece 11 in the air inlet of casing 1, expand air quilt
The direction of absorption, is conducive to carrying out indoor foul atmosphere effective discharge；Meanwhile, also can be by decoration deflector 12
Outward appearance, which is set, to match with indoor decoration style, the decorative effect of enhancing exhaust fan in itself.
As a preferred scheme, the fan of the present embodiment includes drive motor 14 and is socketed on the output of drive motor 14
Flabellum 15 on axle, is additionally provided with one with casing 1 in the motor fixed cover 16 being coaxially distributed, motor fixed cover 16 in casing 1
It is connected as a single entity by some inwalls around the equally distributed support arm 17 of motor fixed cover 16 and casing 1, drive motor 14
It is set in motor fixed cover 16.Thus, it can strengthen and assemble and connect between the removable convenience of whole exhaust fan and part
The fastness connect.
In addition, improving the portability of exhaust fan installation and removal, several installations are additionally provided with the wall of face-piece 11
Hanging hole 18.
Preferred embodiment of the present utility model is the foregoing is only, the scope of the claims of the present utility model is not thereby limited,
Equivalent structure or equivalent flow conversion that every utilization the utility model specification and accompanying drawing content are made, or directly or indirectly fortune
Used in other related technical fields, similarly it is included in scope of patent protection of the present utility model.
Claims (8)
1. a kind of anti-backflow exhaust fan, it includes casing and the fan being installed in casing, it is characterised in that：Filled on the casing
Provided with one be used for cover casing air outlet check-valves, the check-valves include end ring set, two panels valve plate and at least one
Torsion spring, the end ring set is socketed in the air outlet of casing, and valve plate described in two panels is respectively positioned in the collar extension of end ring set and with end ring
Wherein one radial centre lines of set are boundary in mirror image distribution, on the every valve plate and the line of demarcation phase between two panels valve plate
The two ends of parallel side wall are each formed with an axostylus axostyle after radially extending, the end ring is put and position relative with every axostylus axostyle
Position, which offers one, is used for the axis hole for corresponding axostylus axostyle contraposition sleeve, on the valve plate and the boundary between two panels valve plate
Be additionally provided with set axle on the parallel side wall of line, the body fits of the torsion spring on set axle, one end be connected to one of valve
In the outside wall surface of plate, the other end is connected in the outside wall surface of another valve plate.
2. a kind of anti-backflow exhaust fan as claimed in claim 1, it is characterised in that：It is all provided with the outside wall surface of the every valve plate
It is equipped with the set hole that sleeve is carried out for the end for torsion spring.
3. a kind of anti-backflow exhaust fan as claimed in claim 2, it is characterised in that：The torsion spring is two, and described in two
Torsion spring is symmetrical as boundary using the axle center that end ring covers.
4. a kind of anti-backflow exhaust fan as claimed in claim 1, it is characterised in that：In the collar extension of the end ring set and positioned at valve
The rear wall surface side of plate is also formed with the positive stop strip offseted for the rear surface for valve plate.
5. a kind of anti-backflow exhaust fan as claimed in claim 1, it is characterised in that：It is also formed with the perisporium of the end ring set
The engaging lug that the inwall of several and the air outlet of casing offsets.
6. a kind of anti-backflow exhaust fan as any one of claim 1-5, it is characterised in that：The air inlet of the casing
Perisporium radially extend after be formed with a face-piece, the air inlet side of the casing is provided with the decoration of one and face-piece parallel distributed
Deflector, the decoration deflector is connected by some support columns with face-piece.
7. a kind of anti-backflow exhaust fan as claimed in claim 6, it is characterised in that：The fan includes drive motor and socket
One is additionally provided with flabellum on the output shaft of drive motor, the casing with casing in the motor fixed cover being coaxially distributed,
The motor fixed cover is connected as a single entity by some inwalls around the equally distributed support arm of motor fixed cover and casing, institute
Drive motor is stated to be set in motor fixed cover.
8. a kind of anti-backflow exhaust fan as claimed in claim 6, it is characterised in that：It is provided with the wall of the face-piece some
Individual installation hanging hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720025881.1U CN206571710U (en) | 2017-01-09 | 2017-01-09 | A kind of anti-backflow exhaust fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720025881.1U CN206571710U (en) | 2017-01-09 | 2017-01-09 | A kind of anti-backflow exhaust fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206571710U true CN206571710U (en) | 2017-10-20 |
Family
ID=60061085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720025881.1U Active CN206571710U (en) | 2017-01-09 | 2017-01-09 | A kind of anti-backflow exhaust fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206571710U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173449A (en) * | 2018-04-02 | 2019-08-27 | 安庆市汇智科技咨询服务有限公司 | A kind of exhaust fan |
-
2017
- 2017-01-09 CN CN201720025881.1U patent/CN206571710U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173449A (en) * | 2018-04-02 | 2019-08-27 | 安庆市汇智科技咨询服务有限公司 | A kind of exhaust fan |
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