CN215143202U - Gas collecting channel that windage is little - Google Patents
Gas collecting channel that windage is little Download PDFInfo
- Publication number
- CN215143202U CN215143202U CN202120742755.4U CN202120742755U CN215143202U CN 215143202 U CN215143202 U CN 215143202U CN 202120742755 U CN202120742755 U CN 202120742755U CN 215143202 U CN215143202 U CN 215143202U
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- China
- Prior art keywords
- hood
- cover body
- gas collecting
- opening
- connecting part
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- 230000007704 transition Effects 0.000 claims abstract description 15
- 239000004743 Polypropylene Substances 0.000 claims description 8
- -1 polypropylene Polymers 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000004140 cleaning Methods 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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Abstract
The utility model relates to a spare part technical field of exhaust hood, specifically speaking relate to a gas collecting channel that windage is little. In the gas collecting hood in the prior art, the hood body interface and the joint are arranged in a protruding manner, the fixing position of the hood body interface and the rivet of the tube body is also provided with a protrusion, the wind direction changes due to the steps, the joint and the protrusion of the rivet inside, the appearance of the hood opening of the gas collecting hood is basically of an arch structure, and the wind resistance is increased. The non-detachable connection, installation and subsequent cleaning maintenance are inconvenient. A gas collecting channel with small wind resistance is characterized in that a cover body is of an arc-inward splayed structure, a transition part and a connecting part are arranged upwards, the transition part is of an arc structure which is gradually reduced, and the connecting part is of a detachable structure; an eave opening part is arranged at the outer opening of the cover body, the transition part, the connecting part and the eave opening part are of an integrated hollow structure, and an inner cavity of the cover body is of a smooth and flat structure; the inner diameter of the opening at the outer end of the cover body is 2-3 times of the inner diameter of the connecting part. The air exhaust flow velocity is optimized, the air exhaust resistance is reduced, and the air exhaust efficiency is improved. The wind collecting effect is good.
Description
Technical Field
The utility model relates to a spare part technical field of exhaust hood, more specifically say and relate to a gas collecting channel that windage is little.
Background
In the gas-collecting hood of the prior art, as shown in figure 1-2, the whole assembly of the gas-collecting hood I is connected by three parts, a hood body I-1, a first fixing piece I-2 and a second fixing piece I-3 which are connected by screw threads, the first fixing piece I-2 and the second fixing piece I-3 are respectively positioned at the inner part and the outer part of the upper plane of the hood body I-1 and fix the hood body I-1, the outer opening of the hood body I-1 is only provided with a flanging structure, the joint of the hood body I-1 and the first fixing piece I-2 is arranged in a bulge, the hood body I-1 is fixed with a pipe body rivet by the second fixing piece I-3, the bulge is also arranged at the rivet, the first fixing piece I-2 is arranged in the second fixing piece I-3, a step is formed inside the second fixing piece I-3, and the step is arranged on the inside of the second fixing piece I-3, The bulge of the joint and the bulge of the rivet both cause the wind direction to change, and the wind resistance is increased. In addition, the shape of the opening of the gas-collecting hood in the prior art is basically an arch structure, and the wind entering the hood travels along the direction of the hood wall, so that the wind resistance is increased due to the arch trend. The gas collecting channel I is connected in a non-detachable way, and the installation and the subsequent cleaning maintenance are inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a gas collecting channel with reasonable structure, convenient installation and disassembly and small wind resistance aiming at the defects of the prior art.
A gas collecting hood with small wind resistance comprises a hood body, wherein the hood body is of an inward arc splayed structure, a transition part and a connecting part are arranged upwards, the transition part is of an arc structure which is gradually reduced, and the connecting part is connected in a detachable structure; an eave opening part is arranged at the outer opening of the cover body, the transition part, the connecting part and the eave opening part are of an integrated hollow structure, and an inner cavity of the cover body is of a smooth and flat structure; the inner diameter of the opening at the outer end of the cover body is 2-3 times of the inner diameter of the connecting part. The air exhaust flow velocity is optimized, the air exhaust resistance is reduced, and the air exhaust efficiency is improved. The wind collecting effect is good.
As a further improvement and supplement to the above solution, the present invention further comprises the following additional technical features:
eaves mouth portion border department still establish ascending turn-ups portion, snatch in the time of easy to assemble, increase structural strength simultaneously, intensity is good.
The oblique angle of the cover body and the central axis form an angle of 15-60 degrees, the air flow velocity is high, and the structure is reasonable.
The gas collecting hood is made of PP polypropylene, and has high temperature resistance, corrosion resistance and good comprehensive performance.
The connecting part is provided with an external thread structure, and is reasonable in structure and convenient to connect.
Use the utility model discloses following beneficial effect can be reached:
1. the cover opening of the gas collecting cover is arc-shaped and inward in a splayed structure, so that the flow velocity of air flow is optimized, and the wind resistance is greatly reduced.
2. The structure of inside smoothness and straight line has optimized the velocity of flow of airing exhaust, has reduced the resistance of airing exhaust greatly, has improved the efficiency of airing exhaust.
3. The gas collecting hood is of an integrally formed structure and an outward flanging structure, and has good strength.
4. The PP polypropylene material is high temperature resistant, corrosion resistant and long in service life.
5. The external screw thread is arranged outside the detachable connection, so that the installation, the maintenance and the maintenance are convenient.
6. The diameter of the inner wall of the outer end of the cover opening is 2-3 times of the diameter of the inner wall of the connecting air pipe, the air collecting effect is good, and air can be quickly extracted.
Drawings
Fig. 1 is a schematic structural diagram of a gas collecting channel I in the prior art.
Fig. 2 is a front view of a prior art gas collection enclosure I.
Fig. 3 is a schematic structural diagram of the present invention.
Fig. 4 is a front view of the present invention.
Fig. 5 is a plan view of the present invention.
Detailed Description
The following detailed description of embodiments of the present invention will be made with reference to the accompanying drawings.
As shown in fig. 3-5, the utility model relates to a gas collecting channel with small wind resistance.
The gas collecting channel with small wind resistance comprises a cover body 1, wherein the cover body 1 is of a structure that an arc inwards forms a splayed shape, namely, a structure that an outer opening is large and an inner opening is small, the arc is small and is similar to a structure that the arc upwards forms a straight line, and the flow speed of wind is high. Cover body 1 upwards sets up transition portion 2 and connecting portion 3, and transition portion 2 is the circular arc structure by diminishing greatly, and connecting portion 3 is detachable structure's connection, is connected connecting portion 3 by transition portion 2 to be connected with the pipe fitting through connecting portion 3, connecting portion 3 is the structure of cylinder. The outer mouthful department of the cover body 1 establishes eaves mouth portion 4, and eaves mouth portion 4 becomes perpendicular with the axis of the cover body 1 and arranges, and eaves mouth portion 4 extends the certain distance to both ends, according to the structure that sets up for the plane for get into the collection of the wind before the gas collecting channel, the effect of wind collection is good. And the cover body 1, the transition part 2, the connecting part 3 and the cornice part 4 are of an integral hollow structure, the cross section of each part is of a circular structure, the inner cavity is of a smooth and flat structure, circular arc transition is arranged at each transition part, the integral injection molding is realized, the size is ensured by mold control, and the consistency is good. The inner diameter of the opening at the outer end of the cover body 1 is 2-3 times of the inner diameter of the connecting part 3, and the collecting effect is good.
Furthermore, an upward flanging part 5 is arranged at the edge of the cornice part 4, and the size of the upward flanging is about 6mm generally.
Furthermore, the angle of the cover body 1 in the inclined direction forms an angle of 15-60 degrees with the central axis, and the structure in the inclined direction upwards optimizes the airflow.
Furthermore, the gas collecting hood is made of PP polypropylene.
Furthermore, the connecting portion 3 is provided with an external thread, the external thread may be left-handed or right-handed, the thread may be coarse thread or fine thread, and similarly, the external thread may also be a pipe thread in pipe connection, and the cross-sectional shape of the thread may be zigzag, triangular, rectangular or other shapes as required.
When the gas collecting hood with small wind resistance is used, the gas collecting hood can be directly connected to the related pipe body by the external thread on the connecting part 3.
The above is the preferred embodiment of the present invention, and the protection scope of the present invention is not limited, and the deformation and improvement made by the design idea of the present invention for those skilled in the art should be considered as the protection scope of the present invention.
Claims (5)
1. A gas collecting channel with small wind resistance comprises a channel body (1), and is characterized in that: the cover body (1) is of an inward arc splayed structure, a transition part (2) and a connecting part (3) are arranged upwards, the transition part (2) is of an arc structure which is gradually reduced, and the connecting part (3) is connected in a detachable structure; an eave opening part (4) is arranged at the outer opening of the cover body (1), the transition part (2), the connecting part (3) and the eave opening part (4) are of an integrated hollow structure, and an inner cavity of the cover body is of a smooth and flat structure; the inner diameter of the opening at the outer end of the cover body (1) is 2-3 times of the inner diameter of the connecting part (3).
2. The low windage gas collection hood of claim 1 further comprising: and an upward flanging part (5) is also arranged at the edge of the eave part (4).
3. The low windage gas collection hood of claim 1 further comprising: the oblique angle of the cover body (1) forms an angle of 15-60 degrees with the central axis.
4. The low windage gas collection hood of claim 1 further comprising: the gas collecting hood is made of PP polypropylene.
5. The low windage gas collection hood of claim 1 further comprising: the connecting part (3) is provided with an external thread structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120742755.4U CN215143202U (en) | 2021-04-12 | 2021-04-12 | Gas collecting channel that windage is little |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120742755.4U CN215143202U (en) | 2021-04-12 | 2021-04-12 | Gas collecting channel that windage is little |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215143202U true CN215143202U (en) | 2021-12-14 |
Family
ID=79356756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120742755.4U Active CN215143202U (en) | 2021-04-12 | 2021-04-12 | Gas collecting channel that windage is little |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215143202U (en) |
-
2021
- 2021-04-12 CN CN202120742755.4U patent/CN215143202U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 8888, Jinxing village, Qixing street, Xinchang County, Shaoxing City, Zhejiang Province Patentee after: Zhejiang Cohen Experimental Equipment Co.,Ltd. Address before: No. 8888, Jinxing village, Qixing street, Xinchang County, Shaoxing City, Zhejiang Province Patentee before: Zhejiang Cohen Experimental Equipment Co.,Ltd. |
|
| CP03 | Change of name, title or address |