CN113375260B - Water-based pipeline filter and indoor air purification method - Google Patents
Water-based pipeline filter and indoor air purification method Download PDFInfo
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- CN113375260B CN113375260B CN202110655179.4A CN202110655179A CN113375260B CN 113375260 B CN113375260 B CN 113375260B CN 202110655179 A CN202110655179 A CN 202110655179A CN 113375260 B CN113375260 B CN 113375260B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/117—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using wet filtering
- F24F8/125—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using wet filtering using wet filter elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F6/00—Air-humidification, e.g. cooling by humidification
- F24F6/02—Air-humidification, e.g. cooling by humidification by evaporation of water in the air
- F24F6/04—Air-humidification, e.g. cooling by humidification by evaporation of water in the air using stationary unheated wet elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
- F24F8/24—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using sterilising media
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- Engineering & Computer Science (AREA)
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filtering Materials (AREA)
Abstract
The invention discloses a water-based pipeline filter and an indoor air purification method, and belongs to the field of air purification. The filter includes: the inner wall of the water-based filter pipe is provided with a micropore flexible lining; and the water vapor replenishing pipe is communicated with the outer wall of the water-based filtering pipe through a plurality of water vapor replenishing branch pipes. The indoor air purification method comprises the following steps: s01, supplementing water into the water-based filter tube by using a water vapor supplementing tube, and ensuring that the microporous flexible lining is in a wetted state; meanwhile, the water-based filter pipe is heated or cooled, and a water vapor supersaturated environment is constructed inside the water-based filter pipe; and S02, allowing air to pass through the water-based filter pipe, and promoting the combination, condensation and growth of particles in the air and water vapor molecules by utilizing a water vapor supersaturated environment in the water-based filter pipe, and trapping the particles by the surface of the microporous flexible lining. The invention has the advantages of high dust removal efficiency, small wind resistance, large wind volume and low noise, and can not cause the blockage of an airflow channel even if being used for a long time, thereby greatly reducing the cleaning and replacing frequency.
Description
Technical Field
The invention relates to the field of air purification, in particular to a water-based pipeline filter and an indoor air purification method.
Background
Environmental problems caused by the growing severity of haze weather have become a focus of social and public attention. The particulate matter is an important component of haze weather, has small particle size and is easy to carry toxic substances. The particles can penetrate into the respiratory tract of a human body through breathing, and damage the respiratory system, the nervous system, the immune system and the like of the human body. Statistically, people are active indoors for 80% of the day, however, indoor air quality problems also exist, and outdoor is a major source of indoor particulate pollution. Compared with outdoor particulate matter pollution, the indoor particulate matter has the characteristics of easiness in control, long exposure time of personnel and the like, so that the development of the prevention and control of the indoor air particulate matter is an important way for reducing the risk of diseases induced by the particulate matter, and the health effect is obvious.
Conventional air filters filter particles from the flowing air primarily by a sieving effect, an interception effect. For example: an existing HEPA filter (No. CN205182399U, No. 2016.04.27) comprises a frame and a plurality of HEPA filter sheets, wherein a V-shaped structure is formed between every two adjacent HEPA filter sheets, the HEPA filter sheets are integrally combined into a wave-shaped structure, and the wave-shaped structure is fixedly arranged in the frame to form an air purification unit. Also, an air sterilizing and purifying system and a space sterilizing machine (application publication No. CN111829101A, application publication date: 2020.10.27) wherein the space sterilizing machine is disclosed, comprising a shell, the shell is provided with an air inlet and an air outlet, and a primary filter screen, a plasma high-voltage electric field device, an anatase catalyst net, an ultraviolet lamp, a copper-silver nano composite catalyst net, an activated carbon net and a HEPA air filter are sequentially arranged between the air inlet and the air outlet inside the shell.
The air purification device has the advantages of high efficiency, large dust holding capacity and the like, and is widely applied to occasions such as a central air conditioner, a sterile room, a hospital and the like. However, as the filtering time increases, gaps between fibers of the HEPA filter screen become smaller and smaller, and some gaps disappear completely, so that not only the filtering efficiency is reduced, but also the wind resistance of the filter screen is increased, which directly results in the reduction of the air volume passing through the HEPA filter screen, and simultaneously, the noise is also increased, so that the HEPA filter screen needs to be replaced at regular time, and the use cost is increased.
Disclosure of Invention
In view of the above problems in the prior art, there is a need to provide a solution.
In this regard, the present invention provides a water-based pipe filter comprising: the inner wall of the water-based filter pipe is provided with a micropore flexible lining; and the water vapor replenishing pipe is communicated with the outer wall of the water-based filtering pipe through a plurality of water vapor replenishing branch pipes.
When the water-based pipeline filter is used, water is supplemented to the water-based filter pipe through the water vapor supplement pipe and the water vapor supplement branch pipe, the microporous flexible lining is in a soaking state, the water-based filter pipe is heated or cooled, a proper temperature difference is generated inside and outside the water-based filter pipe, and a water vapor supersaturated environment is built inside the water-based filter pipe. After air enters the water-based filter pipe, in a supersaturated environment, when the supersaturation degree of water vapor is higher than the critical supersaturation degree of air particles, the water vapor is subjected to phase change by taking the particles as condensation nuclei to form liquid drop embryos, so that the particle size and the mass of the particles are increased, and the grown particles are trapped by the surface of the microporous flexible lining under the action of gravity and other reasons in the process of flowing through the water-based filter pipe; meanwhile, due to the existence of the temperature difference, the airflow disturbance in the water-based filter pipe is enhanced, and the collision coalescence and the growth of the particles and liquid drops are further enhanced, so that the particles are more easily and efficiently removed. Compared with the existing HEPA filter, the water-based pipeline filter not only obviously improves the dust removal efficiency, but also greatly reduces the cleaning and replacing frequency because the inner diameter of the water-based filter pipe is far larger than the aperture of the filter layer in the HEPA filter, the airflow resistance is small, the air volume is large, the noise is low, and the airflow channel cannot be blocked even if the water-based pipeline filter is used for a long time; in addition, fresh air generated by the water-based pipeline filter has certain humidity, so that the comfort of people is better.
Further, the microporous flexible lining is made of filter sponge or felt.
Furthermore, the water-based filter pipe is an S-shaped coil pipe or a spiral coil pipe, so that the installation space occupation of the water-based filter pipe can be reduced under the condition of ensuring the length.
Further, the water vapor supplement branch pipes are uniformly distributed along the extending direction of the water-based filter pipe so as to provide uniform water vapor supplement in the extending direction of the water-based filter pipe.
Furthermore, the inner diameter of the water-based filter pipe is 20-25 mm, and the length of the water-based filter pipe is more than or equal to 6 m. The water-based pipeline filter adopting the water-based filter pipe with the specification is suitable for household use.
Furthermore, the inner diameter of the water vapor replenishing branch pipe is 3-5 mm, and 4-6 water vapor replenishing branch pipes are distributed per meter in the extending direction of the water-based filter pipe. The water vapor supply of the above-described water-based plumbing filter of domestic specification can be efficiently adapted.
The invention also provides an indoor air purification method, which utilizes the water-based pipeline filter to filter and purify air and comprises the following steps:
s01, supplementing water into the water-based filter pipe by using a water vapor supplementing pipe, and ensuring that the microporous flexible lining is in a wetted state; simultaneously heating or cooling the water-based filter pipe, and constructing a water vapor supersaturated environment in the water-based filter pipe;
and S02, allowing air to pass through the water-based filter pipe, and promoting the combination, condensation and growth of particles in the air and water vapor molecules by utilizing a water vapor supersaturated environment in the water-based filter pipe, and trapping the particles on the surface of the microporous flexible lining.
Further, in the step S01, the water-based pipe filter is placed in a water bath, and the water-based filter pipe is heated or cooled by the water bath. The temperature uniformity and stability of the water bath environment are good, and the supersaturation state in the water-based filter tube can be ensured to be relatively stable.
Further, satisfying: when T is0T is less than 15 ℃ and less than or equal to 45 DEG C1Less than or equal to 50 ℃; when the temperature is less than or equal to 15 ℃ and T is less than or equal to0T is less than 20 ℃ and less than or equal to 40 DEG C1Less than 45 ℃; when the temperature is less than or equal to 20 ℃ and T is less than or equal to0T is less than 26 ℃ and less than or equal to 9 DEG C1Less than or equal to 12 ℃; when T is0T is not less than 7 ℃ and not more than 26 DEG C1Less than 9 ℃; wherein, T0Is the ambient temperature, namely the air inlet temperature of the water-based pipeline filter; t is1The temperature of the water bath. Through reasonable selection of the water bath temperature, the supersaturated environment is constructed, and meanwhile, efficient heat exchange is obtained, so that reasonable and comfortable air outlet temperature is achieved.
Furthermore, the water supplemented into the water-based filter pipe through the water vapor supplementing pipe is distilled water added with a disinfectant, so that precipitate impurities are prevented from being brought into the water-based filter pipe in the water supplementing process, and meanwhile, the disinfectant is used for sterilizing and disinfecting the inside of the water-based filter pipe, so that bacteria are prevented from breeding.
Drawings
FIG. 1 is a schematic diagram of the construction of a water-based pipe filter of the present invention;
in the drawings: 1. a water-based filter tube; 2. a microporous flexible liner; 3. a water vapor replenishing pipe; 4. the water vapor supplements the branch pipe.
Detailed Description
The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings for a purpose of helping those skilled in the art to more fully, accurately and deeply understand the concept and technical solution of the present invention and to facilitate its implementation.
Examples
Referring to fig. 1, the present embodiment provides a water-based pipe filter comprising a water-based filter pipe 1 and a steam replenishment pipe 3, both extending in parallel. The inner wall of the water-based filter pipe 1 is provided with a microporous flexible lining 2, and the microporous flexible lining 2 is made of filter sponge or felt, and can also be made of other materials with the same characteristics. The water vapor replenishing pipe 3 is communicated with the outer wall of the water-based filtering pipe 1 through a plurality of water vapor replenishing branch pipes 4.
When the water-based pipeline filter works, the water-based filter pipe 1 is heated or cooled, a proper temperature difference is generated inside and outside the water-based filter pipe 1, and meanwhile, water is supplemented to the water-based filter pipe 1 through the water vapor supplement pipe 3 and the water vapor supplement branch pipe 4, so that the microporous flexible lining 2 is in a soaking state, and the internal environment of the water-based filter pipe 1 reaches water vapor supersaturation under a specific temperature difference. After air enters the water-based filter pipe 1, in a supersaturated environment, when the supersaturation degree of water vapor is higher than the critical supersaturation degree of air particles, the water vapor is subjected to phase change by taking the particles as condensation nuclei to form liquid drop embryos, so that the particle size and the mass of the particles are increased, and the grown particles are trapped by the surface of the microporous flexible lining 2 under the action of gravity and other reasons in the process of flowing through the water-based filter pipe 1; in addition, due to the existence of the temperature difference, the airflow disturbance inside the water-based filter pipe 1 is enhanced, and the collision coalescence and the growth of particles and liquid drops are further enhanced, so that the particles are more easily and efficiently removed.
Compared with the existing HEPA filter, the water-based pipeline filter not only obviously improves the dust removal efficiency, but also greatly reduces the cleaning and replacing frequency because the inner diameter of the water-based filter pipe 1 is far larger than the aperture of a filter layer in the HEPA filter, the airflow resistance is small, the air volume is large, the noise is low, and the airflow channel cannot be blocked even if the water-based pipeline filter is used for a long time; in addition, fresh air generated by the water-based pipeline filter has certain humidity, so that the comfort of a human body is better.
When the water-based pipeline filter purifies air, the air needs to stay in the water-based filter pipe 1 for a certain time period to fully grow and capture particles in the air, and meanwhile, the air flow needs to be kept, so that the length of the water-based filter pipe 1 needs to meet a certain requirement, and the longer the water-based filter pipe is, the better the water-based filter pipe is theoretically. However, the increase of the length of the water-based filtering pipe 1 inevitably results in an increase of the occupied installation space. In order to solve the problem, the water-based filter pipe 1 is arranged to be an S-shaped coil pipe or a spiral coil pipe, and compared with a long straight pipe, the water-based filter pipe is smaller in installation space occupied by the S-shaped coil pipe and the spiral coil pipe under the same length and is more practical. In addition, the S-shaped coil and the spiral coil can promote the particles in the air flowing through to collide with the surface of the microporous flexible lining 2 in the water-based filter pipe 1, so that the particles are easy to trap.
The water vapor supplement branch pipes 4 are uniformly distributed along the extending direction of the water-based filter pipe 1, and can provide uniform water vapor supplement for the microporous flexible lining 2 in the extending direction of the water-based filter pipe 1, so that a supersaturated environment is established in the whole water-based filter pipe 1.
In a more specific embodiment, the inner diameter of the water-based filter pipe 1 is 20-25 mm, the length of the water-based filter pipe is more than or equal to 6m, and a water-based pipeline filter adopting the water-based filter pipe 1 of the specification is suitable for household use. In order to adapt to the water-based pipeline filter with the household specification, the inner diameter of the water vapor replenishing branch pipe 4 is 3-5 mm, and 4-6 water vapor replenishing branch pipes 4 are distributed per meter in the extending direction of the water-based filter pipe 1. It will be appreciated that the size of the water-based pipe filter may be increased or decreased as desired in different applications.
On the basis of the water-based pipeline filter, the embodiment provides an indoor air purification method, which comprises the following steps:
s01, supplementing water into the water-based filter pipe 1 by using a water vapor supplementing pipe 3, and ensuring that the microporous flexible lining 2 is in a wetted state; meanwhile, the water-based filter pipe 1 is heated or cooled, and a water vapor supersaturated environment is constructed in the water-based filter pipe 1;
s02, allowing air to pass through the water-based filter pipe 1, promoting the combination and condensation growth of particles in the air and water vapor molecules by utilizing a water vapor supersaturated environment inside the water-based filter pipe 1, and trapping the grown particles by utilizing the surface of the microporous flexible lining 2, thereby removing the particles in the air and purifying the air.
In the above step S01, the water-based pipe filter is placed in a water bath, and the water-based filter pipe 1 is heated or cooled by the water bath. The temperature uniformity and stability of the water bath environment are good, and the supersaturation state in the water-based filter pipe 1 can be ensured to be relatively stable at a specific environment temperature. Specifically, let the ambient temperature be T0The temperature of the water bath is T1And the water bath temperature meets the following requirements: when T is0T is less than 15 ℃ and less than or equal to 45 DEG C1Less than or equal to 50 ℃; when the temperature is less than or equal to 15 ℃ and T is less than or equal to0T is less than 20 ℃ and less than or equal to 40 DEG C1Less than 45 ℃; when the temperature is less than or equal to 20 ℃ and T is less than or equal to0T is less than 26 ℃ and less than or equal to 9 DEG C1Less than or equal to 12 ℃; when T is0T is not less than 7 ℃ and not more than 26 DEG C1< 9 ℃. In this scheme, through the reasonable selection water bath temperature, obtain the efficient heat transfer when constructing the supersaturated environment, can heat the air-out temperature or reduce to the reasonable temperature interval of 18 ~ 24 ℃, improved the travelling comfort of air-out.
In the method, the water supplemented into the water-based filter pipe 1 through the water vapor supplementing pipe 3 is distilled water added with a disinfectant, so that precipitate impurities are prevented from being brought into the water-based filter pipe 1 in the water supplementing process, and meanwhile, the disinfectant is used for sterilizing and disinfecting the interior of the water-based filter pipe 1, so that bacteria are prevented from breeding.
The above water-based pipe filter was experimentally verified for its filtering effect as follows. The specifications of the water-based pipeline filter adopted in the test are as follows: the inner diameter of the water-based filter pipe 1 is 20mm, and the length is 6 m; the inner diameter of the water vapor supplement branch pipe 4 is 3mm, and 4 water vapor supplement branch pipes 4 are distributed along the extension direction of the water-based filter pipe 1 every meter. Burning the mosquito-repellent incense in a sealed fume hood, respectively burning for different time lengths, and standing for 30min to ensure that the concentration of particles in the fume hood is uniformly distributed. And then, under the action of an air pump, introducing the gas containing the mosquito-repellent incense particles in the fume hood into the water-based air filter pipe for purification, and sending the purified gas into the fume hood again to enable the airflow in the fume hood to flow circularly. After a period of operation, the concentration of the particles inside the fume hood is monitored by a particle detector, and the test results are shown in table 1 below:
TABLE 1 purifying effect of water-based pipe filter on mosquito-repellent incense particles
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.
Claims (10)
1. A water-based pipe filter, comprising:
the inner wall of the water-based filter pipe (1) is provided with a micropore flexible lining (2); and
the water vapor replenishing pipe (3) is communicated with the outer wall of the water-based filtering pipe (1) through a plurality of water vapor replenishing branch pipes (4);
the air filtering and purifying steps are as follows:
s01, supplementing water into the water-based filter pipe (1) by using a water vapor supplementing pipe (3) to ensure that the microporous flexible lining (2) is in a wetted state; meanwhile, the water-based filter pipe (1) is heated or cooled, and a water vapor supersaturated environment is constructed inside the water-based filter pipe (1);
s02, allowing air to pass through the water-based filter pipe (1), promoting the combination and condensation growth of particles in the air and water vapor molecules by utilizing a water vapor supersaturated environment inside the water-based filter pipe (1), and trapping the grown particles by utilizing the surface of the microporous flexible lining (2), thereby removing the particles in the air and purifying the air.
2. The water-based pipe filter according to claim 1, wherein the microporous flexible liner (2) is a filter sponge or felt.
3. The water-based pipe filter according to claim 1, wherein the water-based filter tube (1) is an S-coil or a spiral coil.
4. The water-based pipe filter according to claim 1, characterized in that the water vapor replenishment branches (4) are evenly distributed along the extension direction of the water-based filter pipe (1).
5. The water-based pipeline filter as claimed in any one of claims 1 to 4, wherein the water-based filter pipe (1) has an inner diameter of 20-25 mm and a length of 6m or more.
6. The water-based pipeline filter according to claim 5, wherein the inner diameter of the water vapor supplement branch pipe (4) is 3-5 mm, and 4-6 water vapor supplement branch pipes (4) are distributed per meter in the extending direction of the water-based filter pipe (1).
7. A method for purifying indoor air, characterized in that the water-based pipeline filter as claimed in any one of claims 1 to 6 is used for filtering and purifying the air.
8. The indoor air purification method as claimed in claim 7, wherein the step of S01, the water-based filtering pipe (1) is heated or cooled by using a water bath.
9. An indoor air purification method according to claim 8, wherein the following are satisfied:
when T is0T is less than 15 ℃ and less than or equal to 45 DEG C1≤50℃；
When the temperature is less than or equal to 15 ℃ and T is less than or equal to0T is less than 20 ℃ and less than or equal to 40 DEG C1＜45℃；
When the temperature is less than or equal to 20 ℃ and T is less than or equal to0T is less than 26 ℃ and less than or equal to 9 DEG C1≤12℃；
When T is0T is not less than 7 ℃ and not more than 26 DEG C1＜9℃；
Wherein, T0Is ambient temperature; t is1The temperature of the water bath.
10. The indoor air purification method according to claim 8, wherein the water supplemented into the water-based filtering pipe (1) through the moisture supplementing pipe (3) is distilled water added with a sanitizer.
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| JP2001170500A (en) * | 1999-01-12 | 2001-06-26 | Toyota Central Res & Dev Lab Inc | Porous body, method of producing the same and exhaust gas purification catalyst using the porous body |
| EP1040858A2 (en) * | 1999-04-01 | 2000-10-04 | Medtronic, Inc. | Antifoam compositions |
| DE102006048832A1 (en) * | 2006-10-11 | 2008-04-17 | Hermsdorfer Institut Für Technische Keramik E.V. | Arrangement of electrically conductive ceramic with functional coating |
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