CN202253883U - Downdraft preventing elbow - Google Patents
Downdraft preventing elbow Download PDFInfo
- Publication number
- CN202253883U CN202253883U CN2011203851572U CN201120385157U CN202253883U CN 202253883 U CN202253883 U CN 202253883U CN 2011203851572 U CN2011203851572 U CN 2011203851572U CN 201120385157 U CN201120385157 U CN 201120385157U CN 202253883 U CN202253883 U CN 202253883U
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- CN
- China
- Prior art keywords
- elbow
- valve seat
- return valve
- downdraft
- head according
- 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
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Abstract
The utility model relates to a downdraft preventing elbow, which relates to an air-out device of an extractor hood and comprises an elbow. The upper end of the elbow is connected with an air outlet of a volute of a blower, and a check valve base is arranged inside the outlet end of the elbow. The vertical surface of the check valve base inclines inwards by an acute angle. A wind guiding bar is fixedly installed on the check valve base radially. A rotary shaft is installed above the wind guiding bar and provided with two valve plates. The valve plates cover the check valve base when being opened. The downdraft preventing elbow provided by the utility model not only prevents oil smoke from downdraft and has a good sealing effect, but also prevents adhesion and gathering of oil stain, so that the downdraft preventing elbow is in particular suitable for integrated kitchen range with a gas stove and a range hood.
Description
Technical field
The utility model relates to a kind of wind apparatus that goes out that is used for range hood, particularly relates to a kind of air-returning device that prevents of lower discharging type ventilator.
Background technology
Along with growth in the living standard; Range hood is by people's extensive use; And used in the building that family now lives generally all be public flue, the oil smoke that the range hood of every household is discharged is discharged from the dwelling house top after range hood gets into public flue, if the range hood air outlet is poorly sealed; Will cause the user's of lower floor oil smoke in discharge process, to get into the room of upper strata resident family; Perhaps when blowing hard or air pressure when low, oil smoke that upper strata resident family discharges also can occur and get in the house from the exhaust outlet of the range hood of resident family of lower floor, produce between the air flue collaborate mutually, the phenomenon of smoke blowing.Go up now and in the range hood of row's formula a kind of check (non-return) valve can be housed all and prevent pouring in down a chimney of oil smoke, and the range hood of lower-discharging type needs improve check (non-return) valve like the check (non-return) valve that the is applied to integrated kitchen range difference because of air draft form and structure.
Summary of the invention
The purpose of the utility model provides and had a kind ofly both prevented that oil smoke from pouring in down a chimney, good sealing effect, prevents the anti-down windbend head of oil stain adhesion and gathering again.
The utility model is realized through following technical scheme: a kind of anti-down windbend head, comprise elbow, and the upper end of elbow connects the air outlet of volute of blower; In the port of export of elbow non-return valve seat is arranged; The said non-return valve seat vertical plane acute angle that tilts inwards, non-return valve seat radially is fixed with wind guide strip, and rotating shaft is equipped with in the wind guide strip top; Two valve blocks are housed in the rotating shaft, cover said non-return valve seat when valve block opens.
The utility model can also further realize that preferably, aforementioned non-return valve seat vertical plane acute rake angle angle inwards is 15 degree through following technical measures.Prevent that the valve block transition that is opened from can't close or be out of shape, the two ends of wind guide strip have the limited block that makes progress perpendicular to wind guide strip; In order to prevent the oil stain adhesion, thus the fluted contact area that reduces valve block and non-return valve seat in the outer ring of non-return valve seat; Oil groove is arranged at the bottom of non-return valve seat, can prevent that the oil stain gathering from resting on the non-return valve seat, flows to the oil leaking hole of elbow bottom; The port of export level of said elbow is inclined upwardly, and makes oil stain better flow to oil leaking hole.
Compared with prior art, the advantage of the utility model is: adopt the valve block and the non-return valve seat of incline structure, rely on gravity that valve block is closed, action effectively can prevent pouring in down a chimney of oil smoke effectively; Can prevent that the valve block transition that is opened from causing and can't close or valve block deformation effect sealing; And can discharge the adhesion that the oil stain of assembling prevents valve block and non-return valve seat through oil groove and oil leaking hole; This anti-down windbend head is not only simple in structure, reasonable in design; And anti-oil smoke pours in down a chimney more effectively, good seal performance, long service life, is applicable to the lower discharging type oil smoke machine, is specially adapted to integrate the integrated kitchen range of gas-cooker, lampblack absorber.
Description of drawings
Fig. 1 is the structural representation of the anti-down windbend head of the utility model;
Fig. 2 is the partial enlarged drawing of Fig. 1.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is done further explain.
Like Fig. 1, shown in Figure 2, a kind of anti-down windbend head comprises elbow 1; The upper end 11 of elbow 1 connects the air outlet of volute of blower, in the port of export 12 of elbow 1 non-return valve seat 2 is arranged, and non-return valve seat 2 vertical planes angle of inclination inwards are 15 degree; Non-return valve seat 2 radially is fixed with wind guide strip 4, and wind guide strip 4 and non-return valve seat 2 parallel installations are installed on the mount pad 9 that is connected with elbow 1; Rotating shaft 5 is equipped with in wind guide strip 4 tops, and two semicircular valve blocks 3 are housed in the rotating shaft 5, and valve block 3 can rotate around the axis; Valve block 3 covers above the non-return valve seat 2 opening under the gravity effect because of 15 degree that tilt inwards with non-return valve seat 2 and wind guide strip 4 when normality; Thereby airtight air channel prevents that oil smoke from pouring in down a chimney, and when blower fan is opened, blows valve block 3 open by the wind-force of last generation and makes smoke evacuation unimpeded.
For prevent valve block 3 and non-return valve seat 2 oil stain adhesions make operate as normal be discharge fume not smooth; Thereby have the contact area that groove 21 reduces valve block 3 and non-return valve seat 2 in the outer ring of non-return valve seat 2; And make contact-making surface near the middle part of valve block 3 but not the edge; Help protecting valve block 3, increase service life; Oil groove 7 is arranged at the bottom of non-return valve seat 2, can prevent that the oil stain gathering from resting on the non-return valve seat 2, flows to the oil leaking hole 8 discharge air channels of elbow 1 bottom; Prevent that valve block 3 transition that is opened from can't close or be out of shape, the two ends of wind guide strip 4 have the limited block 6 that makes progress perpendicular to wind guide strip; The port of export 12 levels of elbow 1 are inclined upwardly, and make oil stain better flow to oil leaking hole 8.
Claims (7)
1. an anti-down windbend head comprises elbow, and the upper end of elbow connects the air outlet of volute of blower; It is characterized in that in the port of export of elbow non-return valve seat being arranged; The said non-return valve seat vertical plane acute angle that tilts inwards, non-return valve seat radially is fixed with wind guide strip, and rotating shaft is equipped with in the wind guide strip top; Two valve blocks are housed in the rotating shaft, cover said non-return valve seat when valve block opens.
2. anti-down windbend head according to claim 1, it is characterized in that said non-return valve seat vertical plane inwards the acute rake angle angle be 15 the degree.
3. anti-down windbend head according to claim 1 is characterized in that the two ends of said wind guide strip have the limited block that makes progress perpendicular to wind guide strip.
4. anti-down windbend head according to claim 1 is characterized in that the outer ring of said non-return valve seat is fluted.
5. anti-down windbend head according to claim 1 is characterized in that oil groove is arranged at the bottom of said non-return valve seat.
6. anti-down windbend head according to claim 1 is characterized in that oil leaking hole is arranged at the bottom of said elbow.
7. anti-down windbend head according to claim 1 is characterized in that the port of export level of said elbow is inclined upwardly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203851572U CN202253883U (en) | 2011-09-28 | 2011-09-28 | Downdraft preventing elbow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203851572U CN202253883U (en) | 2011-09-28 | 2011-09-28 | Downdraft preventing elbow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202253883U true CN202253883U (en) | 2012-05-30 |
Family
ID=46115117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203851572U Expired - Fee Related CN202253883U (en) | 2011-09-28 | 2011-09-28 | Downdraft preventing elbow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202253883U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107975841A (en) * | 2017-05-26 | 2018-05-01 | 宁波方太厨具有限公司 | A kind of ventilator air outlet cover of smoke-backflow-proof taint of odour |
-
2011
- 2011-09-28 CN CN2011203851572U patent/CN202253883U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107975841A (en) * | 2017-05-26 | 2018-05-01 | 宁波方太厨具有限公司 | A kind of ventilator air outlet cover of smoke-backflow-proof taint of odour |
| CN107975841B (en) * | 2017-05-26 | 2023-12-15 | 宁波方太厨具有限公司 | Exhaust hood capable of preventing smoke from flowing backwards and mixing |
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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: 20120530 Termination date: 20190928 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |