CN216810792U - Vertical smoke exhaust device - Google Patents
Vertical smoke exhaust device Download PDFInfo
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- CN216810792U CN216810792U CN202220016689.7U CN202220016689U CN216810792U CN 216810792 U CN216810792 U CN 216810792U CN 202220016689 U CN202220016689 U CN 202220016689U CN 216810792 U CN216810792 U CN 216810792U
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- Prior art keywords
- smoke
- smoke exhaust
- port
- guide
- main body
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- 239000000779 smoke Substances 0.000 title claims abstract description 200
- 238000007599 discharging Methods 0.000 claims abstract description 17
- 230000000391 smoking effect Effects 0.000 claims abstract description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 18
- 239000003546 flue gas Substances 0.000 claims description 18
- 239000007789 gas Substances 0.000 claims description 2
- 230000003116 impacting effect Effects 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 abstract 1
- 239000003517 fume Substances 0.000 description 12
- 230000006872 improvement Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 206010003497 Asphyxia Diseases 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
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Abstract
The utility model discloses a vertical smoke exhaust device which comprises a smoke guide main body, wherein the smoke guide main body is annularly provided with at least two smoke suction ports, the middle part of the smoke guide main body is provided with a confluence cavity, and all the smoke suction ports are communicated with the confluence cavity; the smoke guide main body is provided with a smoke connecting port which is connected with a smoke discharging main pipe of a smoke discharging system; a conical flow guide piece is arranged in the confluence cavity and comprises an annular cambered surface and a conical tip, wherein the outer side of the annular cambered surface corresponds to the smoking port; the smoke connecting port is arranged right opposite to the conical tip. After the smoke collides with the conical fluid director, the original horizontal flow is changed into vertical flow, the smoke is sucked into the smoke connecting port vertically downwards to reach the smoke exhaust main pipe, and finally the smoke is exhausted outdoors by the smoke exhaust system. Effectively preventing the smoke from impacting right above the smoke exhaust port to form a high-pressure area when the smoke is sucked into the smoke exhaust port, and effectively improving the mechanical smoke exhaust efficiency.
Description
Technical Field
The utility model relates to the technical field of fire fighting equipment, in particular to a vertical smoke exhaust device.
Background
The fire hazard of the building can cause great casualties and property loss, the fire fume is a fatal factor in the fire hazard of the building, the fire fume has the characteristics of high temperature, toxicity, shading property and the like, and the high temperature of the fume can cause the strength of the lining material of the building to be reduced, thereby causing the collapse of the building structure and causing the casualties; harmful components in the medicine can cause direct poisoning or suffocation of trapped people, and endanger life safety; and the light-shielding function of the smoke can block the sight line of people, thus causing difficulty in escaping and being trapped in a fire area. Therefore, the smoke is controlled in a certain area and actively removed, so that the fire hazard is reduced, and the fire loss is minimized.
In the existing smoke exhaust method, mechanical smoke exhaust can not only ensure stable smoke exhaust amount, but also cannot be influenced by external conditions (internal and external temperature difference, wind power, wind direction, building structure characteristics, ignition position and the like), so that the mechanical smoke exhaust is widely applied to practical building engineering. The mechanical smoke exhaust mode adopted in the building at the present stage is mainly centralized smoke exhaust, namely a mechanical smoke exhaust pipeline is arranged in the building, and a smoke exhaust port is arranged on the smoke exhaust pipeline to realize smoke exhaust. Once a fire occurs, the smoke exhaust fan is started, high-temperature toxic smoke is sucked into the smoke exhaust pipeline along the smoke exhaust port and then exhausted outdoors, and therefore the smoke is prevented from spreading and toxic gas is prevented from diffusing.
The orientation of a mechanical smoke exhaust port is not specified in the current specifications of China, so that in the mechanical smoke exhaust systems used in many buildings at present, the smoke exhaust port is opened downwards, namely the smoke exhaust port is arranged below a smoke exhaust pipeline for smoke exhaust. In order to improve the smoke exhaust efficiency of some buildings, the smoke exhaust port is opened upwards, namely the smoke exhaust port is arranged above the smoke exhaust pipeline or a branch pipe is added upwards to exhaust smoke. However, a high-pressure area is formed right above the smoke outlet due to the impact of horizontal smoke in the upward smoke discharging process, so that the smoke outlet is influenced to suck smoke, and the smoke discharging efficiency is influenced.
Disclosure of Invention
The embodiment of the utility model aims to provide a vertical smoke exhaust device, which can effectively improve the mechanical smoke exhaust efficiency after smoke passes through a smoke guide device.
In order to achieve the above object, an embodiment of the present invention provides a vertical smoke exhaust device, including a smoke guide main body, wherein the smoke guide main body is annularly provided with at least two smoke suction ports, a converging cavity is arranged in the middle of the smoke guide main body, and all the smoke suction ports are communicated with the converging cavity;
the smoke guide main body is provided with a smoke connecting port, and the smoke connecting port is connected with a smoke discharging main pipe of a smoke discharging system;
a conical flow guide piece is arranged in the confluence cavity and comprises an annular cambered surface and a conical tip, wherein the annular cambered surface is arranged on the outer side of the conical flow guide piece and corresponds to the smoking port; the smoke connecting port is arranged right opposite to the conical tip.
As an improvement of the scheme, the flue gas diversion main body comprises two cover plates which are oppositely arranged, and diversion blades are arranged in the middle of the two cover plates; the two cover plates clamp the guide vane in the middle and are fixedly connected with each other through the top and the bottom of the guide vane;
the number of the guide vanes corresponds to that of the smoke absorbing openings, the guide vanes are annularly arranged, and a cavity formed in the middle is a confluence cavity; and a smoke suction port for allowing smoke to enter the converging cavity is formed between the adjacent guide vanes.
As a modification of the above scheme, 4 groups of smoking openings are arranged.
As an improvement of the scheme, the smoke connecting port is connected with a smoke exhaust pipeline and is connected with a smoke exhaust main pipe of the smoke exhaust system through the smoke exhaust pipeline.
As an improvement of the above scheme, one end of the smoke exhaust pipeline is connected with the smoke connection port, and the other end of the smoke exhaust pipeline is a main connection port and is connected with a smoke exhaust main pipe of the smoke exhaust system;
the diameters of the smoke gas connecting port and the main connecting port are equal.
As an improvement of the scheme, the cover plate is arranged in a circular shape, and the diameter of the cover plate is twice of that of the smoke connecting port.
As an improvement of the scheme, the diameter value of the smoke connecting port is twice as large as the vertical height value of the guide vane.
As an improvement of the scheme, the cross section of the smoke exhaust pipeline is circular.
As an improvement of the scheme, the cross section of the smoke exhaust pipeline is rectangular.
Compared with the prior art, the smoke exhaust device has the advantages that a high-pressure area is formed right above the smoke exhaust port due to the impact of horizontal smoke, the suction of the smoke exhaust port to the smoke is influenced, and the smoke exhaust efficiency is influenced. In the scheme, the conical flow guide piece is positioned in the flow guide device and is in an inverted conical shape, so that the flow direction of the flue gas after the flue gas enters the flow guide device is changed. When a fire occurs, the smoke exhaust system is started, negative pressure is formed in the smoke exhaust pipeline, smoke near the smoke exhaust port enters the flow guide device along the flow guide blades under the action of suction, the original horizontal flow is changed into vertical flow after the smoke collides with the conical flow guide device, the smoke is vertically sucked downwards into the smoke connection port to reach the smoke exhaust main pipe, and finally the smoke is exhausted outdoors by the smoke exhaust system. Effectively preventing the smoke from impacting right above the smoke outlet to form a high-pressure area when the smoke is sucked into the smoke outlet, and effectively improving the mechanical smoke exhaust efficiency.
Drawings
FIG. 1 is a schematic structural diagram of the first embodiment;
FIG. 2 is a sectional view of the first embodiment;
FIG. 3 is a schematic view of the installation structure for use in the present invention;
FIG. 4 is a top view of the first embodiment;
fig. 5 is a schematic structural diagram of the second embodiment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In view of current system of discharging fume, this embodiment provides a vertical type fume extractor, and the flue gas is behind flue gas guiding device, improves mechanical smoke exhaust efficiency effectively, and its concrete scheme is as follows:
referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of the first embodiment, and fig. 2 is a schematic sectional structural diagram of the first embodiment.
A vertical smoke exhaust device comprises a smoke guide main body 1, wherein the smoke guide main body 1 is annularly provided with at least two smoke suction ports 9, the middle part of the smoke guide main body 1 is provided with a confluence cavity, and all the smoke suction ports 9 are communicated with the confluence cavity;
the smoke guide main body 1 is provided with a smoke connecting port which is connected with a smoke discharging main pipe 4 of a smoke discharging system;
a conical flow guide part 6 is arranged in the confluence cavity, the conical flow guide part 6 comprises an annular cambered surface and a conical tip, the outer side of the annular cambered surface corresponds to the smoking hole 9; the flue gas connector is arranged right opposite to the conical tip.
Exemplarily, in this embodiment, this device is whole to be responsible for 4 intercommunications through the flue gas connector with the discharging fume of system of discharging fume, meets emergency and makes the system of discharging fume start during operation, will constantly produce the negative pressure in the main pipe 4 of discharging fume, and the outside flue gas of fume extractor will be inhaled the main pipe 4 of discharging fume through smoking mouth 9, conflux chamber and flue gas connector under the effect of negative pressure this moment to realize the effect of discharging fume.
It should be noted that, the smoke exhaust device can appear directly over the exhaust port because horizontal flue gas striking forms the high-pressure district in the smoke exhaust process, influences the exhaust port to the intake of flue gas to influence smoke exhaust efficiency. In the embodiment, the conical diversion member 6 is located inside the diversion device, and is in an inverted conical shape to change the flow direction of the flue gas after the flue gas enters the diversion device. When a fire occurs, the smoke exhaust system is started, negative pressure is formed in the smoke exhaust pipeline 2, smoke near the smoke exhaust port enters the flow guide device along the flow guide blades 5 under the action of suction, the original horizontal flow is changed into vertical flow after the smoke collides with the conical flow guide device, the smoke is vertically sucked downwards into the smoke exhaust connecting port to reach the smoke exhaust main pipe 4, and finally the smoke is exhausted outdoors by the smoke exhaust system. Effectively preventing the smoke from impacting right above the smoke outlet to form a high-pressure area when the smoke is sucked into the smoke outlet, and effectively improving the mechanical smoke exhaust efficiency.
Referring to fig. 3 and fig. 4, wherein fig. 3 is a schematic view of a use and installation structure of the present invention, and fig. 4 is a top view of the first embodiment.
Specifically, in this embodiment, the flue gas guiding main body 1 includes two cover plates arranged oppositely, and a guide vane 5 is arranged in the middle of the two cover plates; the two cover plates clamp the guide vane 5 in the middle and are fixedly connected with each other through the top and the bottom of the guide vane 5;
the number of the guide vanes 5 corresponds to the number of the smoking ports 9, the guide vanes 5 are annularly arranged, and a cavity formed in the middle is a confluence cavity; a smoke suction port 9 for allowing smoke to enter the converging cavity is formed between the adjacent guide vanes 5. The two cover plates are an upper cover plate 7 and a lower cover plate 8.
In further detail, in the present embodiment, the smoking ports 9 are provided with 4 groups. In addition, the smoke connecting port is connected with a smoke exhaust pipeline 2 and is connected with a smoke exhaust main pipe 4 of the smoke exhaust system through the smoke exhaust pipeline 2.
More preferably, in this embodiment, one end of the smoke exhaust duct 2 is connected to the smoke connection port, and the other end is a main connection port 3 connected to a main smoke exhaust pipe 4 of the smoke exhaust system. The overall size proportion is set as follows:
the diameters of the flue gas connecting port and the main connecting port 3 are equal;
the cover plate is arranged in a circular shape, and the diameter of the cover plate is twice of that of the flue gas connecting port;
the diameter value of the flue gas connecting port is twice as large as the vertical height value of the guide vanes 5.
The purpose of design like this can reach best smoke extraction effect, further improves the whole smoke extraction efficiency of this device.
The smoke exhaust duct 2 is circular in cross section. The circular section smoke exhaust pipeline 2 has a more compact structure and smaller space occupation area, is suitable for small and medium-sized smoke exhaust systems, and is convenient to install and use.
Example 2:
referring to fig. 5, fig. 5 is a schematic structural diagram of the second embodiment.
In the present embodiment, the smoke exhaust duct 2 has a rectangular cross section. Is suitable for large-scale smoke exhaust systems.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the utility model.
Claims (9)
1. The vertical smoke exhaust device is characterized by comprising a smoke guide main body, wherein the smoke guide main body is annularly provided with at least two smoke suction ports, the middle part of the smoke guide main body is provided with a confluence cavity, and all the smoke suction ports are communicated with the confluence cavity;
the smoke guide main body is provided with a smoke connecting port, and the smoke connecting port is connected with a smoke discharging main pipe of a smoke discharging system;
a conical flow guide piece is arranged in the confluence cavity and comprises an annular cambered surface and a conical tip, wherein the annular cambered surface is arranged on the outer side of the conical flow guide piece and corresponds to the smoking port; the smoke connecting port is arranged right opposite to the conical tip.
2. The upright smoke extractor as claimed in claim 1, wherein the flue gas guiding body comprises two cover plates disposed oppositely, and guiding vanes are disposed in the middle of the two cover plates; the two cover plates clamp the guide vane in the middle and are fixedly connected with each other through the top and the bottom of the guide vane;
the number of the guide vanes corresponds to that of the smoke absorbing openings, the guide vanes are annularly arranged, and a cavity formed in the middle is a confluence cavity; and a smoke suction port for allowing smoke to enter the converging cavity is formed between the adjacent guide vanes.
3. The upright smoke evacuation device of claim 2, wherein there are 4 sets of smoke evacuation ports.
4. The upright smoke extractor of claim 2, wherein the smoke connection port is connected to a smoke exhaust duct and is connected to a main smoke exhaust pipe of the smoke exhaust system through the smoke exhaust duct.
5. The upright smoke exhaust device according to claim 4, wherein one end of the smoke exhaust duct is connected with the smoke connection port, and the other end of the smoke exhaust duct is a trunk connection port connected with the smoke exhaust main pipe of the smoke exhaust system;
the diameters of the smoke gas connecting port and the main connecting port are equal.
6. The upright smoke evacuation device of claim 4, wherein the cover plate is circular and has a diameter twice the diameter of the smoke connection port.
7. The upright smoke extractor as claimed in claim 4, wherein the diameter of the smoke connection port is twice as large as the vertical height of the guide vane.
8. The upright smoke evacuation device of claim 4, wherein the smoke exhaust duct is circular in cross-section.
9. The upright smoke evacuation device of claim 4, wherein the smoke exhaust duct is rectangular in cross-section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220016689.7U CN216810792U (en) | 2022-01-05 | 2022-01-05 | Vertical smoke exhaust device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220016689.7U CN216810792U (en) | 2022-01-05 | 2022-01-05 | Vertical smoke exhaust device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216810792U true CN216810792U (en) | 2022-06-24 |
Family
ID=82061608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220016689.7U Expired - Fee Related CN216810792U (en) | 2022-01-05 | 2022-01-05 | Vertical smoke exhaust device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216810792U (en) |
-
2022
- 2022-01-05 CN CN202220016689.7U patent/CN216810792U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220624 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |