CN2636139Y - Check air exhausting duct - Google Patents
Check air exhausting duct Download PDFInfo
- Publication number
- CN2636139Y CN2636139Y CN 03258961 CN03258961U CN2636139Y CN 2636139 Y CN2636139 Y CN 2636139Y CN 03258961 CN03258961 CN 03258961 CN 03258961 U CN03258961 U CN 03258961U CN 2636139 Y CN2636139 Y CN 2636139Y
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- Prior art keywords
- air duct
- bend
- valve
- main air
- oil
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Abstract
The utility model relates to a removing device for indoor waste gas, in particularly relating to a non-return air exhausting duct. The utility model is an anti-oil collection non-return exhaust duct, which comprises a valve, a curve bend and a main air duct; the curve bend is communicated with the main air duct. The utility model is characterized in that: the valve is arranged on the curve bend, whose valve sheet surface is vertical to the central line of the main air duct. The utility model has the advantages of changing the horizontal position of the valve into the vertical position; therefore, when opening the valve sheet, the valve sheet is in parallel with the main air duct, thus the smoke is vented smoothly without blockage and coemption of soot; even there has small volume of soot stored, the soot will directly flow into the oil collection device of the ventilator for the lower end of the curve bend is directly connected with the branch air duct without an oil collection cup; thereby, the utility model lowers the cost and has high standardization degree, which is favorable for improving quality.
Description
Technical field
The utility model relates to a kind of remover of indoor exhaust air, relates in particular to a kind of non-return exhausting duct.
Background technology
Existing multilayer and high residential building generally all have the waste gas of public flue for every family discharging kitchen and toilet, every family is open type to the opening of public flue in the early stage, when all users are not when discharging fume simultaneously, pressure in the main air duct is greater than the pressure of the branch air duct that does not have smoke evacuation, the user's who causes flue gas to return from the opening part adverse current not have smoke evacuation is indoor, one tame cooking has appearred, the phenomenon of every household drifting fragrance.So the measure of various anti-backflows is launched respectively, the most direct is to add check-valves in the porch.
As shown in Figure 1, because branch air duct is general vertical with main air duct, the airflow direction of the branch air duct also airflow direction with main air duct is vertical, disturb the smooth and easy of main air duct exhaust in order to prevent the branch air duct charge air flow, each branch air duct changes discharge directions through a bend earlier after entering main air duct, make the parallel of exhaust airstream direction and main air duct, check-valves level this moment (the valve block surface that is check-valves is parallel with the center line of main air duct) is installed on the joint of branch air duct and main air duct, when closing, valve block blocks inlet, inlet was opened when valve block opened, expandable valve block causes but that the turning duct cross-section is long-pending to diminish, turning speed change to air-flow causes bigger local resistance, the oil smoke that causes the kitchen is hoarded herein, the while valve block has hindered oil smoke again and has flowed back to branch air duct, therefore this check-valves generally all is provided with catchment cup the oil that this place hoards is collected, as if this quite reasonable, but but being branch air duct, actual conditions advance the inlet of main air duct all at next point of upper strata floor, this catchment cup was on the finishing furred ceiling when fitted up in the kitchen, even it is also very difficult that general user wants to clear up catchment cup, therefore, this scheme poor practicability.
Summary of the invention
The utility model purpose is to overcome above-mentioned weak point of the prior art, provides that a kind of exhaust is smooth and easy, simultaneously structure is again simply and comparatively practical anti-oil-collecting non-return exhausting duct.
The purpose of this utility model can realize by following approach.
The technical scheme that the utility model adopted is a kind of anti-oil-collecting non-return exhaust duct, comprises valve, bend, main air duct, and bend is communicated with main air duct, and its structural feature is that valve is installed on the bend, and the valve block surface of valve is vertical with the center line of main air duct.
Particularly when valve is vertically installed, if the smoke exhaust ventilator of branch air duct or exhaust fan are not worked, valve block is closed, flue gas can't be from the main air duct crossfire to branch air duct, in case and smoke exhaust ventilator or exhaust fan work, valve block is opened, valve block is parallel with main air duct, discharging to flue gas is unobstructed, it is smooth and easy to discharge fume, and no oil smoke is hoarded, even if a spot of long-pending oil is arranged, also the least significant end because of bend directly links to each other with branch air duct, the no valve block of long-pending oil stops, directly flows to the oil collector sump tank that branch air duct enters smoke exhaust ventilator under the gravity effect, does not therefore need catchment cup, simplify overall structure, reduced cost.
For many years, people have formed the thinking set that valve can only level be installed on the interface of branch air duct and main air duct.The utility model has overcome the thinking inertia that this thinking set caused, and creatively valve vertically is installed on the bend, and has produced unexpected technique effect, and therefore, the utility model is a kind of technology that overcomes technology prejudice.
Can be further designed to the bend in the utility model: bend one end runs through main air duct and contains and is contained in the main air duct, this end bend has one section straight section portion that parallels with main air duct, the border seal of bend outer peripheral face and main air duct joint, bend inside has the passage of both ends open, this channel shape can be semicircle, also can be for dustpan-shaped etc.At this moment, the installation site of valve further can be specially: or be positioned at the straight section portion that bend parallels with main air duct, or be positioned at the port of export of bend.
Or bend is made of bend pipe, and the camber of bend pipe is 90 degree, and its shape of cross section can be for circular or be square etc.Preferably use the PVC90 degree elbow of standard, improve standardization level, help improving the quality.At this moment, the installation site of valve further is specially: or be positioned at the straight section portion that bend pipe parallels with main air duct, or be positioned at the port of export of bend pipe; When using bend pipe shorter, or during NORMAL BEND, preferably valve is installed on the port of export of bend pipe.Installation is easy to connect like this, and technology is simple.
About valve, the utility model can be selected existing common check valve for use, or the double leaf valve of being opened by the middle part.When using the double leaf valve, opening speed is fast, and it is more smooth and easy to ventilate.
Advantage of the present utility model is to make the valve that existing level is installed into vertical installation, when the smoke exhaust ventilator of branch air duct or exhaust fan are not worked, valve block is closed, flue gas can't be back to branch air duct from main air duct, in case and smoke exhaust ventilator or exhaust fan work, valve block is opened, valve block is parallel with main air duct, discharging to flue gas is unobstructed, it is smooth and easy to discharge fume, and no oil smoke is hoarded, even if a spot of long-pending oil is arranged, also the least significant end because of bend directly links to each other with branch air duct, the no valve block of long-pending oil stops, directly flows to the oil collector sump tank that branch air duct enters smoke exhaust ventilator under the gravity effect, does not therefore need catchment cup, simplified overall structure, reduced cost, installed easy to connectly, technology is simple, the standardization level height helps improving the quality.The utility model has overcome level this thinking set of check-valves has been installed, and creatively valve vertically is installed on the bend, and has produced unexpected technique effect, and therefore, the utility model is a kind of technology that overcomes technology prejudice.
Description of drawings
Fig. 1 is the structural representation of existing non-return exhausting duct
Fig. 2 is a structural representation of the present utility model
Fig. 3 is the structural representation of the utility model embodiment 2
Fig. 4 is the vertical view of Fig. 3
Fig. 5 is the structural representation of the utility model embodiment 3
Wherein: 1 valve block surface, 2 bends, 21 bend pipes, 22 straight section portions, 3 main air ducts, 4 branch air ducts
The specific embodiment
Below in conjunction with view the utility model is described in detail
As shown in Figure 2, a kind of non-return exhausting duct, comprise valve, bend 2, main air duct 3, bend 2 is dustpan-shaped, and the one end runs through main air duct 3 and contains and is contained in the main air duct 3, and this bend has one section straight section portion 22 that parallels with main air duct, valve is fixed in straight section portion 22, the border seal of bend outer peripheral face and main air duct joint, bend inside has the passage of both ends open, and the valve block surface 1 of check valve is vertical with the center line of main air duct 3.In the use, branch air duct 4 communicates with main air duct 3 by bend 2.
Shown in Fig. 3,4, a kind of non-return exhausting duct, comprise valve, bend 2, main air duct 3, bend 2 is made of bend pipe 21, bend pipe 21 is standard PVC 90 degree elbows, uses standard pipe to fix in main air duct 3, and valve is installed on the port of export of bend pipe 21, the double leaf valve of opening in the middle part of valve is served as reasons, its valve block surface 1 is vertical with the center line of main air duct 3.In the use, branch air duct 4 communicates with main air duct 3 by bend pipe 21.
As shown in Figure 5, bend pipe 21 is a square elbow, and it is identical with last example that all the other do not state part.
Claims (10)
1, a kind of anti-oil-collecting non-return exhausting duct comprises valve, bend (2), main air duct (3), and bend (2) is communicated with main air duct (3), it is characterized in that, valve is installed on the bend (2), and the valve block surface (1) of valve is vertical with the center line of main air duct (3).
2, anti-oil-collecting non-return exhausting duct according to claim 1, it is characterized in that, one end of bend (2) runs through main air duct (3) and contains and is contained in the main air duct (3), this end bend has one section straight section portion (22) that parallels with main air duct (3), the border seal of bend outer peripheral face and main air duct joint, bend inside has the passage of both ends open.
3, anti-oil-collecting non-return exhausting duct according to claim 1 is characterized in that, bend (2) is made of bend pipe (21).
4, anti-oil-collecting non-return exhausting duct according to claim 1 is characterized in that, the camber of bend pipe (21) is 90 degree.
5, anti-oil-collecting non-return exhausting duct according to claim 3 is characterized in that bend pipe (21) is a circular winding pipe.
6, anti-oil-collecting non-return exhausting duct according to claim 1 is characterized in that bend pipe (21) is a square elbow.
7, anti-oil-collecting non-return exhausting duct according to claim 6 is characterized in that valve is installed on the port of export of bend pipe (21).
8, anti-oil-collecting non-return exhausting duct according to claim 4 is characterized in that, bend pipe (21) is standard PVC 90 degree elbows.
9, anti-oil-collecting non-return exhausting duct according to claim 8 is characterized in that valve is installed on the port of export of bend pipe (21).
10, anti-oil-collecting non-return exhausting duct according to claim 1 is characterized in that, the double leaf valve of opening in the middle part of valve is served as reasons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03258961 CN2636139Y (en) | 2003-06-16 | 2003-06-16 | Check air exhausting duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03258961 CN2636139Y (en) | 2003-06-16 | 2003-06-16 | Check air exhausting duct |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2636139Y true CN2636139Y (en) | 2004-08-25 |
Family
ID=34295883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03258961 Expired - Fee Related CN2636139Y (en) | 2003-06-16 | 2003-06-16 | Check air exhausting duct |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2636139Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090964A (en) * | 2016-06-24 | 2016-11-09 | 陈桂霞 | A kind of anti-taint of odour common flue |
| CN106122994A (en) * | 2016-06-24 | 2016-11-16 | 陈桂霞 | A kind of flue |
-
2003
- 2003-06-16 CN CN 03258961 patent/CN2636139Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090964A (en) * | 2016-06-24 | 2016-11-09 | 陈桂霞 | A kind of anti-taint of odour common flue |
| CN106122994A (en) * | 2016-06-24 | 2016-11-16 | 陈桂霞 | A kind of flue |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |