CA2726568A1 - Outdoor air purifier - Google Patents
Outdoor air purifier Download PDFInfo
- Publication number
- CA2726568A1 CA2726568A1 CA 2726568 CA2726568A CA2726568A1 CA 2726568 A1 CA2726568 A1 CA 2726568A1 CA 2726568 CA2726568 CA 2726568 CA 2726568 A CA2726568 A CA 2726568A CA 2726568 A1 CA2726568 A1 CA 2726568A1
- Authority
- CA
- Canada
- Prior art keywords
- air
- conduit
- water
- air purifier
- water pipes
- 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.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2221/00—Applications of separation devices
- B01D2221/16—Separation devices for cleaning ambient air, e.g. air along roads or air in cities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2247/00—Details relating to the separation of dispersed particles from gases, air or vapours by liquid as separating agent
- B01D2247/12—Fan arrangements for providing forced draft
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
An air purifier for outdoor use is provided. The air purifier comprises a conduit with air entry and exit openings and an air passageway. At least one fan is positioned inside the conduit or at the air entry opening to cause a movement of unpurified air into the conduit through the air entry opening and to cause a movement of purified air out of the conduit through the air exit opening. Water pipes are positioned inside the conduit, and the water pipes allow for spraying of water within the conduit, thereby purifying the air.
Description
OUTDOOR AIR PURIFIER
Field of the Invention This invention relates to the field of environmental engineering.
Background Air pollution is a serious problem in today's world. We frequently hear about smog, acid rain, and ozone depletion. Some cities, such as Mexico City, Sao Paulo, Cairo, New Delhi and Shanghai, are known for the dense layer of brown smog that hovers above them. Even in Canada, there is enough pollution that weather stations routinely provide a daily air quality rating. Health Canada states that air pollution can be detrimental to respiratory and cardiovascular health, and may exacerbate existing medical conditions.
Two common types of air pollution are particulate matter and noxious gases.
The noxious gases include sulfur dioxide, carbon monoxide, nitrogen oxides, and chemical vapors. The main source of pollutants in urban areas is fuel combustion, whether from cars, residential, commercial, or industrial heating and cooling, or coal-burning power plants. Cars produce high levels of carbon monoxides and are a major source of hydrocarbons and nitrogen oxides, whereas fuel combustion from heating, cooling and coal-burning is the dominant source of sulfur dioxide.
Smog is caused by chemical reactions between pollutants derived from different sources, primarily automobile exhaust and industrial emissions. Cities are often centers of these types of activities, and many suffer from the effects of smog, especially during the warm months of the year.
Acid rain occurs when a pollutant, such as sulfuric acid, combines with droplets of water in the air, causing the water to become acidified . The effects of acid rain on the environment can be very serious. It damages plants by destroying their leaves, it poisons the soil, and it changes the chemistry of lakes and streams. Damage due to acid rain kills trees and harms animals, fish, and other wildlife.
The Greenhouse Effect, also referred to as global warming, is generally believed to come from the build-up of carbon dioxide gas in the atmosphere. Carbon dioxide is produced when fuels are burned. Plants convert carbon dioxide back to oxygen, but the release of carbon dioxide from human activities is higher than the world's plants can process. Thus, the amount of carbon dioxide in the air is continuing to increase.
This buildup acts like a blanket and traps heat close to the surface of the earth.
Ozone depletion is another result of pollution. Chemicals released by our activities affect the stratosphere, one of the atmospheric layers surrounding earth. The ozone layer in the stratosphere protects the earth from harmful ultraviolet radiation from the sun. Release of chlorofluorocarbons from aerosol cans, cooling systems and refrigerator equipment removes some of the ozone, causing "holes"; to open up in this layer and allowing the radiation to reach the earth.
One approach for reducing air pollution is to limit the release of pollutants into the atmosphere such as by reducing reliance on cars, replacing coal with cleaner burning fuels such as natural gas, and reducing overall energy consumption. While these approaches may have some positive effect, many pollutants continue to be released into the air.
There is therefore a need for devices to help purify the air of pollutants.
Summary An outdoor air purifier is provided which comprises a conduit with air entry and exit openings and an air passageway. At least one fan is positioned inside the conduit or at the air entry opening to cause a movement of unpurified air into the conduit through the air entry opening and to cause a movement of purified air out of the conduit through the air exit opening. Water pipes are positioned inside the conduit, and the water pipes allow for spraying of water within the conduit, thereby purifying the air.
Field of the Invention This invention relates to the field of environmental engineering.
Background Air pollution is a serious problem in today's world. We frequently hear about smog, acid rain, and ozone depletion. Some cities, such as Mexico City, Sao Paulo, Cairo, New Delhi and Shanghai, are known for the dense layer of brown smog that hovers above them. Even in Canada, there is enough pollution that weather stations routinely provide a daily air quality rating. Health Canada states that air pollution can be detrimental to respiratory and cardiovascular health, and may exacerbate existing medical conditions.
Two common types of air pollution are particulate matter and noxious gases.
The noxious gases include sulfur dioxide, carbon monoxide, nitrogen oxides, and chemical vapors. The main source of pollutants in urban areas is fuel combustion, whether from cars, residential, commercial, or industrial heating and cooling, or coal-burning power plants. Cars produce high levels of carbon monoxides and are a major source of hydrocarbons and nitrogen oxides, whereas fuel combustion from heating, cooling and coal-burning is the dominant source of sulfur dioxide.
Smog is caused by chemical reactions between pollutants derived from different sources, primarily automobile exhaust and industrial emissions. Cities are often centers of these types of activities, and many suffer from the effects of smog, especially during the warm months of the year.
Acid rain occurs when a pollutant, such as sulfuric acid, combines with droplets of water in the air, causing the water to become acidified . The effects of acid rain on the environment can be very serious. It damages plants by destroying their leaves, it poisons the soil, and it changes the chemistry of lakes and streams. Damage due to acid rain kills trees and harms animals, fish, and other wildlife.
The Greenhouse Effect, also referred to as global warming, is generally believed to come from the build-up of carbon dioxide gas in the atmosphere. Carbon dioxide is produced when fuels are burned. Plants convert carbon dioxide back to oxygen, but the release of carbon dioxide from human activities is higher than the world's plants can process. Thus, the amount of carbon dioxide in the air is continuing to increase.
This buildup acts like a blanket and traps heat close to the surface of the earth.
Ozone depletion is another result of pollution. Chemicals released by our activities affect the stratosphere, one of the atmospheric layers surrounding earth. The ozone layer in the stratosphere protects the earth from harmful ultraviolet radiation from the sun. Release of chlorofluorocarbons from aerosol cans, cooling systems and refrigerator equipment removes some of the ozone, causing "holes"; to open up in this layer and allowing the radiation to reach the earth.
One approach for reducing air pollution is to limit the release of pollutants into the atmosphere such as by reducing reliance on cars, replacing coal with cleaner burning fuels such as natural gas, and reducing overall energy consumption. While these approaches may have some positive effect, many pollutants continue to be released into the air.
There is therefore a need for devices to help purify the air of pollutants.
Summary An outdoor air purifier is provided which comprises a conduit with air entry and exit openings and an air passageway. At least one fan is positioned inside the conduit or at the air entry opening to cause a movement of unpurified air into the conduit through the air entry opening and to cause a movement of purified air out of the conduit through the air exit opening. Water pipes are positioned inside the conduit, and the water pipes allow for spraying of water within the conduit, thereby purifying the air.
Brief Description of the Drawings Figure 1 is a perspective view of the outdoor air purifier including a cutaway area to expose the interior of the air purifier.
Figure 2 is a cross-sectional view of the outdoor air purifier along line A-A
in Figure 1.
Figure 3 is a longitudinal sectional view of the outdoor air purifier along line B-B in Figure 1.
Figure 4 is a perspective view of the outdoor air purifier illustrating a possible embodiment of the air purifier.
Detailed Description As shown, for example, in Figure 1, the outdoor air purifier 2 comprises a conduit 4 with an air entry opening 6, an air exit opening 8, and an air passageway 10 connecting the air entry and air exit openings. Air is brought into the conduit through the air entry opening 6 by means of one or more fans 12. There may be one, two, three or even more than three fans 12 depending on the size of the conduit 4. The one or more fans 12 must be of sufficiently high speed to move the air from outside into the conduit 4, but the exact speed will depend on the size of the conduit. As the air passes through the conduit 4, it is filtered through a screen of water (not shown).
The water is pumped into the conduit 4 from a water source 14, channeled so that it travels at high velocity, and then released into the conduit 4 such that the air passes through the water before exiting through the air exit opening 8.
The water source 14 may be any convenient source of water, including natural waterways such as rivers, lakes, or streams, or manmade waterways such as ponds or canals. The water is pumped from the water source 14 through a pump intake tube 16, and then reaches the pump 18. From the pump 18, the water passes through a water inlet tube 20. Once pumped into the conduit 4, the water is contained within pipes or tubes 22. The water may be sprayed directly into the conduit from the pipes or tubes 22 by means of small holes 24 (see Figures 2 and 3), nozzles, jets or the like, thus creating a screen of water. Preferably, the water is sprayed across, or at an angle more or less perpendicular to, the longitudinal axis of the conduit, but other angles may be possible as well. An example of a spray pattern is shown in Figure 2. The pressure of the water must be sufficiently great to allow the water to travel through the tubes and create a spray.
As shown in Figure 3, the interior 32 of the conduit 4 is preferably shaped to maximize exposure of the air carrying pollutant particles to the water. A
venturi throat or similar shape for the interior 32 as shown, for example, in Figure 3, increases turbulence to allow for more efficient air purification.
Optionally, the water may be directed through coiled or branched tubing 22 so that the water is sprayed from many locations at once. Also optionally, the air purifier may include a return pipe or tube 36 (as shown in Figure 4) which directs the used water back to the water source 14, and may also cause some spray back into the conduit, thus allowing for further air purification. Once the water has been sprayed or has passed through the tubing 22, it may exit the conduit through a water outlet tube 26 or through the air entry or air exit openings 6,8. After use, the water may be returned to the water source 14.
Also shown in Figure 4 is a stack 34, or means to increase the air flow into the conduit, which may be included at the air entry opening 6. The stack 34 may have a funnel shape to improve the flow of air into the air entry opening 6, and may be of any length appropriate to the size of the conduit 4. Further features known in the art may also be incorporated into the air purifier to improve air flow, or to improve air purification.
The air purifier may use any available energy source, including solar or wind power.
The at least one fan 12 and pump 18 are connected to a power source 28 by means of a power cord 30.
The air purifier may be placed on the ground on any type of support structure, or may alternatively be suspended from a support structure. The air purifier may optionally include handles to allow for easy transport and manipulation.
Figure 2 is a cross-sectional view of the outdoor air purifier along line A-A
in Figure 1.
Figure 3 is a longitudinal sectional view of the outdoor air purifier along line B-B in Figure 1.
Figure 4 is a perspective view of the outdoor air purifier illustrating a possible embodiment of the air purifier.
Detailed Description As shown, for example, in Figure 1, the outdoor air purifier 2 comprises a conduit 4 with an air entry opening 6, an air exit opening 8, and an air passageway 10 connecting the air entry and air exit openings. Air is brought into the conduit through the air entry opening 6 by means of one or more fans 12. There may be one, two, three or even more than three fans 12 depending on the size of the conduit 4. The one or more fans 12 must be of sufficiently high speed to move the air from outside into the conduit 4, but the exact speed will depend on the size of the conduit. As the air passes through the conduit 4, it is filtered through a screen of water (not shown).
The water is pumped into the conduit 4 from a water source 14, channeled so that it travels at high velocity, and then released into the conduit 4 such that the air passes through the water before exiting through the air exit opening 8.
The water source 14 may be any convenient source of water, including natural waterways such as rivers, lakes, or streams, or manmade waterways such as ponds or canals. The water is pumped from the water source 14 through a pump intake tube 16, and then reaches the pump 18. From the pump 18, the water passes through a water inlet tube 20. Once pumped into the conduit 4, the water is contained within pipes or tubes 22. The water may be sprayed directly into the conduit from the pipes or tubes 22 by means of small holes 24 (see Figures 2 and 3), nozzles, jets or the like, thus creating a screen of water. Preferably, the water is sprayed across, or at an angle more or less perpendicular to, the longitudinal axis of the conduit, but other angles may be possible as well. An example of a spray pattern is shown in Figure 2. The pressure of the water must be sufficiently great to allow the water to travel through the tubes and create a spray.
As shown in Figure 3, the interior 32 of the conduit 4 is preferably shaped to maximize exposure of the air carrying pollutant particles to the water. A
venturi throat or similar shape for the interior 32 as shown, for example, in Figure 3, increases turbulence to allow for more efficient air purification.
Optionally, the water may be directed through coiled or branched tubing 22 so that the water is sprayed from many locations at once. Also optionally, the air purifier may include a return pipe or tube 36 (as shown in Figure 4) which directs the used water back to the water source 14, and may also cause some spray back into the conduit, thus allowing for further air purification. Once the water has been sprayed or has passed through the tubing 22, it may exit the conduit through a water outlet tube 26 or through the air entry or air exit openings 6,8. After use, the water may be returned to the water source 14.
Also shown in Figure 4 is a stack 34, or means to increase the air flow into the conduit, which may be included at the air entry opening 6. The stack 34 may have a funnel shape to improve the flow of air into the air entry opening 6, and may be of any length appropriate to the size of the conduit 4. Further features known in the art may also be incorporated into the air purifier to improve air flow, or to improve air purification.
The air purifier may use any available energy source, including solar or wind power.
The at least one fan 12 and pump 18 are connected to a power source 28 by means of a power cord 30.
The air purifier may be placed on the ground on any type of support structure, or may alternatively be suspended from a support structure. The air purifier may optionally include handles to allow for easy transport and manipulation.
Claims (8)
1. An outdoor air purifier comprising a conduit with air entry and exit openings and an air passageway, at least one fan positioned to cause a movement of unpurified air into the conduit through the air entry opening and to cause a movement of purified air out of the conduit through the air exit opening, and water pipes positioned inside the conduit, wherein the water pipes are adapted to allow for spraying of water within the conduit, thereby purifying the air.
2. The air purifier of claim 1, wherein the water pipes are coiled.
3. The air purifier of claim 1, where the water pipes are pierced with holes to allow for spraying of water within the conduit.
4. The air purifier of claim 1, wherein the water travels through the water pipes by means of a pump.
5. The air purifier of claim 1, wherein the conduit comprises an interior, and the interior comprises a venturi throat.
6. The air purifier of claim 1, further comprising a stack.
7. The air purifier of claim 1, further comprising a return pipe.
8. The air purifier of claim 1, wherein the conduit has a longitudinal axis, and wherein the spraying of water from the water pipes is across the longitudinal axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2726568 CA2726568A1 (en) | 2010-12-30 | 2010-12-30 | Outdoor air purifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2726568 CA2726568A1 (en) | 2010-12-30 | 2010-12-30 | Outdoor air purifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2726568A1 true CA2726568A1 (en) | 2012-06-30 |
Family
ID=46383902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2726568 Abandoned CA2726568A1 (en) | 2010-12-30 | 2010-12-30 | Outdoor air purifier |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2726568A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105080236A (en) * | 2015-09-15 | 2015-11-25 | 沈阳人和机电工程设备有限公司 | Mobile type multifunctional air purification device and use method thereof |
| CN106563569A (en) * | 2016-11-10 | 2017-04-19 | 深圳市爱品生电子科技有限公司 | Outdoor air treatment device |
| WO2017190444A1 (en) * | 2016-05-05 | 2017-11-09 | 东莞市利发爱尔空气净化系统有限公司 | Activated carbon filter screen structure and air purifier |
-
2010
- 2010-12-30 CA CA 2726568 patent/CA2726568A1/en not_active Abandoned
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105080236A (en) * | 2015-09-15 | 2015-11-25 | 沈阳人和机电工程设备有限公司 | Mobile type multifunctional air purification device and use method thereof |
| WO2017190444A1 (en) * | 2016-05-05 | 2017-11-09 | 东莞市利发爱尔空气净化系统有限公司 | Activated carbon filter screen structure and air purifier |
| CN106563569A (en) * | 2016-11-10 | 2017-04-19 | 深圳市爱品生电子科技有限公司 | Outdoor air treatment device |
| CN106563569B (en) * | 2016-11-10 | 2018-06-26 | 深圳市爱品生电子科技有限公司 | Outdoor air controlling device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |
Effective date: 20161230 |