CN113375260B - Water-based pipeline filter and indoor air purification method - Google Patents

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

A kind of water-based pipeline filter and indoor air purification method

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 technique

The environmental problems caused by the increasingly serious haze weather have become the focus of the society and the public. Particulate matter is an important part of haze weather, with small particle size and easy to carry toxic substances. Particulate matter can penetrate deep into the respiratory tract of the human body through breathing, causing damage to the human respiratory system, nervous system, and immune system. According to statistics, people spend 80% of the day in indoor activities. However, indoor air quality problems also exist, and outdoor is the main source of indoor particulate pollution. Compared with outdoor particulate matter pollution, indoor particulate matter has the characteristics of easy control and long exposure time of personnel. Therefore, the prevention and control of indoor air particulate matter is an important way to reduce the risk of diseases caused by particulate matter, and has significant health effects.

The traditional air filter mainly filters the particles in the flowing air through the sieving effect and the interception effect. For example: an existing HEPA filter (authorization announcement number: CN205182399U, authorization announcement date: 2016.04.27) includes a frame and several HEPA filters, wherein a V-shaped structure is formed between two adjacent HEPA filters , a plurality of 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 disinfection and purification system and a space disinfection machine (application publication number: CN111829101A, application publication date: 2020.10.27), wherein a space disinfection machine is disclosed, including a casing, and the casing is provided with an air inlet and an air outlet, Inside the casing, between the air inlet and the air outlet, a primary filter screen, a plasma high-voltage electric field device, an anatase catalyst screen, an ultraviolet lamp, a copper-silver nanocomposite catalyst screen, an activated carbon screen, and HEPA air are arranged in sequence. filter.

The above air purification device has the advantages of high efficiency and large dust holding capacity, and is widely used in central air conditioners, sterile rooms, hospitals and other occasions. However, as the filtration time increases, the gaps between the fibers of the HEPA filter will become smaller and smaller, and some gaps will disappear completely, which will not only reduce the filtration efficiency, but also increase the wind resistance of the filter, directly As a result, the air volume passing through the HEPA filter will decrease, and the noise will also increase, so the HEPA filter must be replaced regularly, which increases the cost of use.

SUMMARY OF THE INVENTION

In view of the above problems existing in the prior art, it is necessary to provide a solution.

Based on this, the present invention provides a water-based pipeline filter, comprising: a water-based filter tube, the inner wall of which is provided with a microporous flexible lining; The outer walls of the tubes communicate with each other.

The above water-based pipeline filter, when in use, supplements the water-based filter tube with water through the water-vapor supplementary pipe and the water-vapor supplementary branch pipe, so that the microporous flexible lining is in a wet state, and at the same time, the water-based filter tube is heated or cooled to make the water A suitable temperature difference is generated inside and outside the base filter tube, thereby creating a water vapor supersaturated environment inside the water base filter tube. After the air enters the water-based filter tube, in a supersaturated environment, when the water vapor supersaturation is higher than the critical supersaturation of air particles, the water vapor takes the particles as the condensation nucleus and undergoes a phase change to form droplet embryos, which makes the particle size and quality of the particles. In the process of flowing through the water-based filter tube, the grown particles are captured by the surface of the microporous flexible lining under the action of gravity and other reasons; at the same time, due to the existence of temperature difference, the internal The airflow disturbance further strengthens the collision, coalescence and growth of particles and droplets, making it easier for particles to be removed efficiently. Compared with the existing HEPA filter, the water-based pipeline filter not only improves the dust removal efficiency obviously, but also because the inner diameter of the water-based filter tube is much larger than the pore size of the filter layer in the HEPA filter, the airflow resistance is small, the air volume is large, and the noise is small. In addition, the fresh air generated by the water-based pipe filter has a certain humidity, which makes people feel more comfortable.

Further, the microporous flexible inner lining is a filter sponge or felt.

Further, the water-based filter tube is an S-shaped coil tube or a spiral-shaped coil tube, which can reduce the installation space occupied by the water-based filter tube under the condition of ensuring the length.

Further, the water vapor supplementation branch pipes are evenly distributed along the extending direction of the water-based filter tube, so as to provide uniform water vapor supplementation in the extending direction of the water-based filter tube.

Further, the inner diameter of the water-based filter tube is 20-25 mm, and the length is ≥ 6 m. The water-based pipe filter using the water-based filter tube of this specification is suitable for household use.

Further, the inner diameter of the water vapor supplementary branch pipes is 3-5 mm, and 4 to 6 water vapor supplementary branch pipes are distributed per meter along the extending direction of the water-based filter pipe. It can effectively adapt to the water vapor supply of the above household-sized water-based in-line filters.

The present invention also provides an indoor air purification method, which utilizes the above-mentioned water-based pipeline filter to filter and purify the air, and the steps are:

S01. Use a water vapor replenishing pipe to add water to the water-based filter tube to ensure that the microporous flexible lining is in a wet state; at the same time, heat or cool the water-based filter tube to build water vapor inside the water-based filter tube oversaturated environment;

S02, let the air pass through the water-based filter tube, and use the water vapor supersaturated environment inside the water-based filter tube to promote the combination of particulate matter in the air and the water vapor molecule to condense and grow, and be captured by the microporous flexible lining surface.

Further, in the step S01, the water-based pipeline filter is placed in a water bath, and a water bath is used to heat or cool the water-based filter tube. The temperature uniformity and stability of the water bath environment are good, which can ensure that the supersaturation state in the water-based filter tube is relatively stable.

Further, it satisfies: when T ₀ <15°C, 45°C≤T ₁ ≤50°C; when 15°C≤T ₀ <20°C, 40°C≤T ₁ <45°C; when 20°C≤T ₀ <26 When the temperature is ℃, 9℃≤T ₁ ≤12℃; when T ₀ ≥26℃, 7℃≤T ₁ <9℃; among them, T ₀ is the ambient temperature, that is, the inlet air temperature of the water-based pipeline filter; _T1 is the water bath temperature. By choosing the temperature of the water bath reasonably, high-efficiency heat exchange can be obtained while constructing a supersaturated environment, so as to achieve a reasonable and comfortable outlet air temperature.

Further, the water supplemented into the water-based filter tube through the water vapor replenishment tube is distilled water added with a disinfectant, so as to avoid the sediment impurities being brought into the water-based filter tube during the replenishment process, and at the same time, the water The interior of the base filter tube is sterilized and sterilized to avoid the breeding of bacteria.

Description of drawings

Fig. 1 is the structural representation of the water-based pipeline filter of the present invention;

In the accompanying drawings: 1. Water-based filter pipe; 2. Microporous flexible lining; 3. Water vapor supplementary pipe; 4. Water vapor supplementary branch pipe.

Detailed ways

Below with reference to the accompanying drawings, through the description of the embodiments, the specific embodiments of the present invention will be described in further detail, the purpose is to help those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solutions of the present invention, and contribute to its implementation.

Example

Referring to FIG. 1 , a water-based pipeline filter is provided in this embodiment, which includes a water-based filter tube 1 and a water vapor supplementary tube 3 , which extend in parallel. The inner wall of the water-based filter tube 1 is provided with a microporous flexible lining 2, and the microporous flexible lining 2 is a filter sponge or felt, and other materials with the same characteristics can also be used. The water vapor supplementary pipe 3 communicates with the outer wall of the water-based filter pipe 1 through several water vapor supplementary branch pipes 4 .

When the above-mentioned water-based pipeline filter is in operation, the water-based filter tube 1 is heated or cooled, so that a suitable temperature difference is generated inside and outside the water-based filter tube 1, and at the same time, the water-based filter tube 1 is supplied to the water-based filter tube 1 through the water vapor supplementary pipe 3 and the water vapor supplementary branch pipe 4. Water is added to make the microporous flexible lining 2 in a wet state, and then the internal environment of the water-based filter tube 1 can be supersaturated with water vapor under a specific temperature difference. After the air enters the water-based filter tube 1, in a supersaturated environment, when the water vapor supersaturation is higher than the critical supersaturation of air particles, the water vapor takes the particles as the condensation nucleus and undergoes phase transformation to form droplet embryos, so that the particle size and The mass increases, so that in the process of flowing through the water-based filter tube 1, the grown particles are captured by the surface of the microporous flexible lining 2 under the action of gravity and other reasons; in addition, due to the existence of temperature difference, the water-based The airflow disturbance inside the filter tube 1 further strengthens the collision, coalescence and growth of the particles and droplets, thereby making the particles more easily and efficiently removed.

Compared with the existing HEPA filter, the water-based pipeline filter not only improves the dust removal efficiency obviously, but also because the inner diameter of the water-based filter tube 1 is much larger than the pore size of the filter layer in the HEPA filter, the airflow resistance is small, the air volume is large, and the noise is small. , and the air passage will not be blocked after long-term use, which greatly reduces the frequency of cleaning and replacement; in addition, the fresh air generated by the water-based pipe filter has a certain humidity, which gives better comfort to the human body.

When the water-based pipe filter purifies the air, the air needs to stay in the water-based filter tube 1 for a certain period of time, so that the particles in the air can fully grow and be trapped, and at the same time, the flow of the air must be maintained, so the water-based filter The length of the tube 1 needs to meet certain requirements, and in theory, the longer the better. However, the increase in the length of the water-based filter tube 1 will inevitably increase the occupied installation space. In order to solve this problem, in this solution, the above water-based filter tube 1 is set as an S-shaped coil or a spiral coil. Compared with the long straight tube, the S-shaped coil and the spiral coil occupy the same length of The installation space is smaller and more practical. In addition, the S-shaped coil and the helical 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 tube 1, thereby being more easily captured.

The above-mentioned water vapor supplementary branch pipes 4 are evenly distributed along the extending direction of the water-based filter tube 1. In the extending direction of the water-based filter tube 1, it can provide uniform water vapor supplement for the microporous flexible lining 2, so as to provide uniform water vapor supplementation for the entire water-based filter tube. 1 Internal build oversaturated environment provides a guarantee.

A more specific embodiment is that the inner diameter of the water-based filter tube 1 is 20-25 mm, and the length is greater than or equal to 6 m. The water-based pipeline filter using the water-based filter tube 1 of this specification is suitable for household use. In order to adapt to the above household water-based pipe filter, the inner diameter of the water vapor supplementary branch pipe 4 is 3-5 mm, and 4 to 6 water vapor supplements are distributed per meter along the extending direction of the water-based filter pipe 1 Branch pipe 4. It can be understood that in different application environments, the specifications of the water-based pipeline filter can be increased or decreased as required.

On the basis of the above-mentioned water-based pipeline filter, a method for indoor air purification is provided in this embodiment, and the steps are:

S01. Use the water vapor replenishing pipe 3 to supplement water into the water-based filter tube 1 to ensure that the microporous flexible lining 2 is in a wet state; at the same time, the water-based filter tube 1 is heated or cooled, and the A water vapor supersaturated environment is constructed inside the filter tube 1;

S02, let the air pass through the water-based filter tube 1, use the water vapor supersaturated environment inside the water-based filter tube 1 to promote the combination of particles in the air and water vapor molecules to condense and grow, and use the microporous flexible lining 2 The surface traps the grown particles, thereby removing the particles from the air to purify the air.

In the above step S01, the water-based pipeline filter is placed in a water bath, and the water-based filter tube 1 is heated or cooled by using the water bath. The temperature uniformity and stability of the water bath environment are good, which can ensure that the supersaturated state in the water-based filter tube 1 is relatively stable at a specific ambient temperature. Specifically, set the ambient temperature as T ₀ and the water bath temperature as T ₁ , and the water bath temperature satisfies: when T ₀ <15°C, 45°C≤T ₁ ≤50°C; when 15°C≤T ₀ <20°C, 40°C ≤T ₁ <45°C; when 20°C≤T ₀ <26°C, 9°C≤T ₁ ≤12°C; when T ₀ ≥26°C, 7°C≤T ₁ <9°C. In this scheme, by reasonably selecting the temperature of the water bath, high-efficiency heat exchange can be obtained while constructing a supersaturated environment, and the outlet air temperature can be heated or lowered to a reasonable temperature range of 18-24°C, improving the comfort of the outlet air.

In the above method, the water replenished in the water-based filter tube 1 through the water vapor replenishment tube 3 is distilled water added with a disinfectant, so as to avoid the sediment impurities being brought into the water-based filter tube 1 during the replenishment process, At the same time, the interior of the water-based filter tube 1 is sterilized and sterilized by using a bactericide, so as to avoid the breeding of bacteria.

As follows, the filtration effect of the above-mentioned water-based pipeline filter is tested and verified. The specifications of the water-based pipeline filter used in the test are: the inner diameter of the water-based filter tube 1 is 20mm and the length is 6m; the inner diameter of the water vapor supplementary branch pipe 4 is 3mm, and there are 4 water vapors per meter along the extension direction of the water-based filter tube 1. Supplement branch 4. Burn mosquito coils in a sealed fume hood for different durations, and then let stand for 30 minutes to make the particle concentration in the fume hood evenly distributed. Then, under the action of the air pump, the gas containing the mosquito coil particles in the fume hood is passed into the water-based air filter tube for purification, and the purified gas is sent back to the inside of the fume hood to circulate the airflow inside the fume hood. After running for a period of time, the concentration of particulate matter inside the fume hood was monitored by a particulate matter detector. The test results are shown in Table 1 below:

Table 1. Purification effect of water-based pipe filter on mosquito coil particles

The present invention and its embodiments have been described above schematically, and the description is not restrictive, and what is shown in the accompanying drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it, without departing from the purpose of the present invention, any structural modes and embodiments similar to this technical solution are designed without creativity, which shall belong to the protection scope of the present invention. .

Claims (10)

1. a water-based pipeline filter, is characterized in that, comprises: A water-based filter tube (1), the inner wall of which is provided with a microporous flexible lining (2); and A water vapor supplement pipe (3), which is communicated with the outer wall of the water-based filter pipe (1) through several water vapor supplement branch pipes (4); The steps to filter and purify the air are: S01. Use a water vapor replenishing pipe (3) to add water to the water-based filter tube (1) to ensure that the microporous flexible lining (2) is in a wetted state; at the same time, the water-based filter tube (1) Heating or cooling is performed to build a water vapor supersaturated environment inside the water-based filter tube (1); S02, let the air pass through the water-based filter tube (1), use the water vapor supersaturated environment inside the water-based filter tube (1) to promote the combination of particles in the air and the water vapor molecules to condense and grow, and use the micropore flexibility The surface of the inner lining (2) captures the grown particulate matter, thereby removing the particulate matter in the air, so as to purify the air. 2 . The water-based pipeline filter according to claim 1 , wherein the microporous flexible inner liner ( 2 ) is a filter sponge or felt. 3 . 3. The water-based pipeline filter according to claim 1, characterized in that, the water-based filter tube (1) is an S-shaped coiled tube or a spiral-shaped coiled tube. 4. The water-based pipeline filter according to claim 1, characterized in that, the water vapor supplementary branch pipes (4) are evenly distributed along the extending direction of the water-based filter pipe (1). 5. The water-based pipeline filter according to any one of claims 1 to 4, wherein the water-based filter tube (1) has an inner diameter of 20-25 mm and a length of ≥ 6 m. 6. The water-based pipeline filter according to claim 5, characterized in that the inner diameter of the water vapor supplementary branch pipe (4) is 3-5 mm, and is distributed per meter along the extending direction of the water-based filter pipe (1). There are 4-6 said water vapor supplementary branch pipes (4). 7 . A method for indoor air purification, characterized in that the water-based pipeline filter according to any one of claims 1 to 6 is used to filter and purify the air. 8 . 8. The indoor air purification method according to claim 7, characterized in that, in the step S01, a water bath is used to heat or cool the water-based filter tube (1). 9. indoor air purification method according to claim 8, is characterized in that, satisfies: When T ₀ <15℃, 45℃≤T ₁ ≤50℃; When 15℃≤T ₀ <20℃, 40℃≤T ₁ <45℃; When 20℃≤T ₀ <26℃, 9℃≤T ₁ ≤12℃; When T ₀ ≥26°C, 7°C≤T ₁ <9°C; Among them, T ₀ is the ambient temperature; T ₁ is the water bath temperature. 10 . The indoor air purification method according to claim 8 , wherein the water supplemented into the water-based filter pipe ( 1 ) through the water vapor supplement pipe ( 3 ) is distilled water added with a disinfectant. 11 .

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