CN211585955U

CN211585955U - Novel indoor multi-pollutant integral type of efficient purifies device

Info

Publication number: CN211585955U
Application number: CN201922056571.8U
Authority: CN
Inventors: 张亚斌; 郝艳红; 马卓慧
Original assignee: Shanxi University
Current assignee: Shanxi University
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-09-29
Anticipated expiration: 2029-11-26

Abstract

The utility model belongs to the technical field of indoor air purification, concretely relates to novel indoor multiple pollutant integral type of efficient purifies device. Comprises a casing; an airflow circulation assembly disposed within the enclosure; the filter assembly is arranged in the machine shell and comprises a primary filter layer and a secondary filter layer; the photocatalytic reaction subassembly, it sets up in the casing, the photocatalytic reaction subassembly includes illuminating part, reactor sleeve, base and the sleeve that is in the light, reactor sleeve lateral wall part distribution has a plurality of intake pipe inside it along its body tangential link up down. The inner wall of the reactor sleeve is distributed with a photocatalyst; and the U-shaped air duct is used for communicating the inside of the reactor sleeve with the upper space of the shell. The utility model discloses simple structure, the performance optimization can get rid of in the house especially just decorate the volatile organic compounds and the particle pollutant that have very big poison in the room in step, realizes the thorough purification of room air.

Description

Novel indoor multi-pollutant integral type of efficient purifies device

Technical Field

The utility model belongs to the technical field of indoor air purification, concretely relates to novel indoor multiple pollutant integral type of efficient purifies device.

Background

According to statistics, about 60% -90% of the time of human being in room rest or work a day, and the indoor air pollution degree is far higher than that of the outdoor air, so the influence of the environment on human health is obvious. Indoor pollutants mainly comprise particulate matters (including suspended particulate matters and inhalable particulate matters), Volatile Organic Compounds (VOCs), bacteria, viruses and the like, have the characteristics of concealment, accumulation, diversity, durability and the like, and are imperceptibly threatening the health of people. Among them, volatile organic pollutants are most concealed and harmful, and are also most difficult to eradicate effectively. At present, the main removal methods comprise a chemical method, a physical adsorption method, an air negative ion purification technology, a plant purification method, a photocatalyst technology and the like. There are a number of problems with these prior art techniques. For example: various trapping agents with strong oxidizing property have short effective period and are harmful to human health. The activated carbon product has obvious adsorption effect, but the adsorption is not decomposed, and the activated carbon product is easy to release again after saturated adsorption to cause secondary pollution. The air negative ion purification technology is easy to generate ozone to cause secondary pollution, and the plant purification is slow. With the development of the national indoor environment standard becoming perfect, the living standard of people is improved and the environmental awareness is strengthened, and the indoor environment management becomes the common consensus, inevitable demand and development trend of the whole society.

The photocatalysis technology is a green energy-saving high-efficiency purification technology, wherein, TiO₂The photocatalyst is a widely applied semiconductor photocatalyst, and the generated free radicals play a decisive role in photocatalytic oxidation. TiO2₂The photocatalytic oxidation reaction has the advantages of mild reaction conditions, universality, simple equipment, low cost, no pollution of products and the like, and is highly concerned by various purification technology manufacturers and environment workers. However, TiO is used in the application process₂Some problems are also exposed, such as nanoparticlesThe particles are very fine, easily enter human bodies to influence health, and are very difficult to recover; TiO2₂The solar energy utilization rate of the photocatalyst is low (below 5 percent), and the photocatalyst is directly placed at each position of a room, so that the photocatalytic efficiency is low; the relatively low concentration of volatile organic pollutants in the chamber makes the adsorption process on the surface of the catalyst slow, thereby resulting in a slow reaction process; excessive indoor particulate pollutants and water vapor molecules are continuously accumulated on the surface of the catalyst, so that catalytic active sites are blocked, and TiO is caused₂And the inactivation is rapid.

The application of Localized Surface Plasmon Resonance (LSPR) to photocatalytic technology has attracted considerable attention in recent years. At present, many researches are carried out around different noble metals and semiconductors at home and abroad, and the noble metals, metal oxides, non-metal oxides and the like are compounded to prepare various novel plasma resonance catalysts. The strengthening mechanism is that nano-structure materials (mainly Ag, Au and the like) with LSPR effect and high free electron mobility are loaded on a semiconductor, the noble metal nano-particles have strong light-substance interaction characteristics, and the local surface plasmon resonance phenomenon can occur when the nano-structure materials interact with photons matched with the surface valence electron collective oscillation frequency. In this case, a strong electromagnetic field and high-energy carriers are generated on the surface of the nanostructure, thereby effectively improving photocatalytic efficiency. More importantly, when a very strong electromagnetic gradient is formed between two adjacent metal nanoparticles, an electromagnetic gradient force is generated to capture and move micro particles, particularly organic molecules containing benzene rings, and the optical capture force is obtained. The capture force of the plasmon resonance metal enables rapid adsorption capture of VOCs, which ensures rapid degradation of volatile organic contaminants in a very short contact time of the contaminants with the catalyst. The adsorption process caused by the illumination is reversible, and when the illumination is stopped, the product is easy to desorb, so that the photocatalyst is not easy to deactivate. The method has high stability, low cost, remarkable adsorption effect, and no adverse side effect. If metal nanoparticles having plasmon resonance effect are loaded on TiO₂The catalyst is used for catalyzing and degrading VOCs and killing bacteria and viruses by ultraviolet light and then mixing with particle pollutantsThe purification device is integrated, so that the integrated removal of indoor pollutants is realized.

In summary, in the current indoor pollutant treatment process, especially in the purification process of the VOCs, due to the special physicochemical characteristics and the existing technologies, there are many problems, and reports similar to the novel efficient integrated indoor pollutant treatment technology are also few. Therefore, the development of an efficient indoor pollutant purification technology and device has application prospect, not only accords with the environmental protection policy of energy conservation and emission reduction in China, but also accords with the development trend of an indoor pollutant integrated treatment technology.

Disclosure of Invention

The indoor purification device aims to solve the problems that the existing indoor purification technology and the existing indoor purification device are difficult to synchronously remove various pollutants in the process of treating indoor pollutants, and particularly, volatile organic pollutants are difficult to effectively clear and have the danger of releasing again.

The utility model provides a novel high-efficiency indoor pollutant collaborative removing technology and a device, comprising a casing, wherein the top of the casing is provided with an exhaust port, the side wall of the casing is distributed with air inlet holes, and a clapboard for dividing the inside of the casing into an upper cavity and a lower cavity is arranged in the casing; the airflow circulating assembly is arranged in the shell and positioned in the upper space of the shell; the filter assembly is arranged in the machine shell and positioned in the lower layer space of the machine shell, and the filter assembly comprises a first-stage filter layer and a second-stage filter layer; photocatalytic reaction subassembly, it sets up in the casing, be located in the lower floor space of casing, just be located the filtering component is inboard, photocatalytic reaction subassembly includes illuminating part, reactor sleeve, base and the sleeve that is in the light, reactor sleeve lateral wall part distribution has a plurality of intake pipe inside it of lining up along its body tangential down (the purpose is realized gaseous spiral rising motion in reactor sleeve, improves the effective contact of pollutant and interior wall photocatalyst). The light emitting part is arranged on the base, the reactor sleeve is arranged on the base and wraps the light emitting part, the light blocking sleeve shields the reactor sleeve, and only the bottom of the light blocking sleeve is provided with a gap for gas circulation; the inner wall of the reactor sleeve is distributed with a photocatalyst; the U-shaped air duct penetrates through the partition plate and is used for communicating the interior of the reactor sleeve with the upper space of the shell (aiming at effectively reducing the turbulence of air flow in the reactor sleeve caused by directly connecting the air flow circulation assembly with the interior of the reactor sleeve and effectively reducing the influence of ultraviolet light on the indoor environment).

Further, the photocatalyst is AgCo/TiO2, wherein the metal part consists of Ag with a typical plasma resonance effect and an auxiliary agent Co, the Ag loading is 0.5-2% of the mass of TiO2, and the auxiliary agent Co loading is 0.5-5%; the metal oxide was selected from commercial TiO2 type P25, which contains 80% anatase and 20% rutile. The metal loading mode is selected from an immersion reduction method.

The filter comprises a first-stage filter layer, a second-stage filter layer, a high-density nylon woven net and a nano activated carbon fiber interwoven net, wherein the first-stage filter layer and the second-stage filter layer are both cylindrical, the second-stage filter layer is located on the inner side of the first-stage filter layer and is tightly attached to the inner side of the first-stage filter layer, the first-stage filter layer is the high-density nylon woven net, and the second.

The outer primary filter layer is a high-strength compact nylon fabric, and can effectively filter suspended particles such as dust, hair and the like; the inner-layer secondary filter layer is high-density filter cloth made of nano-active carbon fiber wires with the diameter of 5-10 microns, the filter cloth is folded and arranged to increase the contact area with pollutants and reduce wind resistance, and micron-sized particle pollutants can be effectively removed by the filter screen.

Further, the photocatalyst is fixed on the inner surface of the reactor sleeve through an inorganic binder, the inorganic binder is aluminum phosphate, and the mass of the aluminum phosphate is 10% of the mass of the photocatalyst.

Further, the airflow circulation assembly comprises an electric motor and a conical air duct, and turbine fan blades are arranged on the electric motor.

Furthermore, the end of the conical air duct with the relatively large diameter is connected with the exhaust port, and the conical air duct is positioned above the U-shaped air duct.

Further, the light emitting part is a four-tube single-ended ultraviolet lamp, and the light emitting part is located in the center of the reactor sleeve.

Furthermore, the top end of the light blocking sleeve is connected with the partition plate, and the inner wall of the light blocking sleeve is connected with the reactor sleeve in a sealing mode.

The light blocking sleeve is connected and sealed with the upper layer partition plate, the lower end of the light blocking sleeve is close to the inner bottom of the machine shell, and a gap of 5mm is reserved, so that the filter assembly is communicated with the sleeve of the photocatalytic reactor, and the purpose is to reduce the leakage of ultraviolet light and enable the air in a room to be treated to enter the sleeve of the photocatalytic reactor at a stable flow rate and pollutant concentration.

Compared with the prior art, the invention has the advantages that:

1. the utility model provides a pair of novel indoor multiple pollutants of efficient integral type purification device compares in single system on indoor multicomponent pollutant handles, and purification system has more advantages in coordination, has both overcome the problem that traditional family air purifier is difficult to eradicate volatile organic pollutant, has also solved organic pollutant removal methods such as photocatalyst simultaneously and has been difficult long, imitate easy deactivation and inefficiency scheduling problem, finally realizes the purpose of synchronous particle pollutant (including suspension pollutant and inhalable pollutant), bacterial virus and volatile organic pollutant of getting rid of.

2. The utility model discloses a special design's ultraviolet ray catalytic reaction ware and the novel integration system in coordination that multilayer carbon fiber filter screen of outer parcel constitutes handles indoor pollutant, especially there is fabulous treatment effect to new decoration house, the carbon fiber network who has both utilized high adsorption capacity effectively adsorbs the advantage of particle pollutant, the high-efficient clean system of ultraviolet ray of the noble metal catalyst that has also utilized the load to have plasma resonance effect simultaneously gets rid of quick travel's volatile organic pollutant, indoor particle pollutant has both been eliminated to human respiratory track, organic pollutant and bacterial virus can high-efficiently be got rid of again to the harm of lung, reduce human pathological change, really realize the high-efficient quick purification of indoor air.

Drawings

Fig. 1 is a schematic structural diagram of a novel efficient indoor multi-pollutant integrated purification device.

In the figure: 1-an exhaust port; 2-an electric motor; 3-turbine blades; 4-a tapered air duct; 5-a machine shell; 6-U-shaped air guide tube; 7-a separator; 8-air inlet holes; 9-first-stage filtering layer; 10-a secondary filtration layer; 11-a base; 12-a light-blocking sleeve; 13-a reactor sleeve; 14-a photocatalyst; 15-a light-emitting part; 16-air inlet pipe.

Detailed Description

The invention is described in detail below with reference to the accompanying drawings:

a novel efficient indoor multi-pollutant integrated purification device comprises a machine shell 5, wherein the top of the machine shell 5 is provided with an exhaust port 1, air inlet holes 8 are distributed on the side wall of the machine shell, and a partition plate 7 for dividing the interior of the machine shell into an upper cavity and a lower cavity is arranged in the machine shell 5; an air circulation assembly disposed in the cabinet 5 in an upper space of the cabinet 5; the filter assembly is arranged in the machine shell 5 and positioned in the lower layer space of the machine shell 5, and comprises a primary filter layer 9 and a secondary filter layer 10; the photocatalytic reaction subassembly, it sets up in casing 5, be located in 5 lower floor's space of casing, and be located the second grade filter layer 10 is inboard, the photocatalytic reaction subassembly includes illuminating part 15, reactor sleeve 13, base 11 and the sleeve 12 that is in the light, and power supply line integrates in base 11. A plurality of air inlet pipes 16 which penetrate through the reactor sleeve 13 along the tangential direction of the body are distributed at the lower part of the side wall of the reactor sleeve 13, the light-emitting part 15 is arranged on the base 11, the reactor sleeve 13 is arranged on the base 11 and wraps the light-emitting part 15, the reactor sleeve 13 is shielded by the light-blocking sleeve 12, and only the bottom of the light-blocking sleeve is provided with a gap for gas circulation; the inner wall of the reactor sleeve 13 is distributed with a photocatalyst 14; the material of the reactor sleeve 13 is black ABS high-strength plastic. And the U-shaped air duct 6 penetrates through the partition plate 7 and is used for communicating the inside of the reactor sleeve 13 with the upper space of the shell 5.

The photocatalyst 14 is AgCo/TiO 2. TiO2 is a commercial P25 type, an amorphous crystalline material containing 80% anatase and 20% rutile, having photocatalytic efficiency far superior to those of the two forms, and being inexpensive. The photocatalyst 14 is made of Ag with typical plasma resonance effect as noble metal, and the noble metal loading is equivalent to that of photocatalysisTiO in agent 14₂0.5-2% of the mass, and 0.5-5% of auxiliary agent Co is loaded. The noble metal loading mode is selected from an immersion reduction method. The rapid adsorption of volatile organic pollutants relies on the plasma resonance effect, namely, the electromagnetic field gradient between the nano noble metal particles enables the organic pollutants to be rapidly captured and adsorbed between the two noble metal particles.

The first-level filter layer 9 and the second-level filter layer 10 are both cylindrical, the second-level filter layer 10 is located on the inner side of the first-level filter layer 9 and is tightly attached to the inner side of the first-level filter layer, the first-level filter layer 9 is a high-density nylon woven net, and the second-level filter layer 10 is a highly-folded nano activated carbon fiber woven net.

The photocatalyst 14 is fixed by an inorganic binder, the inorganic binder is aluminum phosphate, and the aluminum phosphate contains an adhesive bonding component, so that the aluminum phosphate has a bonding effect, the aluminum phosphate can be bonded by chemical bonds and can also form a stable chemical structure through surface reaction of substances to play a bonding effect, and the adding mass of the aluminum phosphate is 10% of the mass of the photocatalyst 14.

The airflow circulating assembly comprises a motor 2 and a conical air duct 4, wherein turbine fan blades 3 are arranged on the motor 2. The motor 2 has a rated power of 35W.

The one end that the diameter of toper wind channel 4 is relative big is connected with gas vent 1, toper wind channel 4 is located U type air duct 6 top.

The light emitting portion 15 is a four-tube single-ended ultraviolet lamp, and the light emitting portion 15 is located at the center of the reactor sleeve 13. The pipe diameter is 12mm or 26mm, the pipe length is 200mm, and the single-pipe power range is 7-50W.

The top end of the light blocking sleeve 12 is connected with the partition plate 7, and the inner wall of the light blocking sleeve is connected with the reactor sleeve 13 in a sealing manner.

The action mechanism of the utility model is as follows: the motor 2 drives the turbine fan blade 3 to rotate, air in the upper space of the partition board 7 in the casing 5 is pumped out, then air pressure in the upper space of the casing 5 is far smaller than air pressure in the lower space, the upper space is communicated with the reactor sleeve 13 through the U-shaped air duct 6, and under the action of negative pressure in the upper space of the casing 5, suction is generated in the lower space of the casing 5 and outside air of the casing 5.

After the indoor air is sucked from the air inlet 8, suspended and inhalable pollutants in the indoor air are sequentially adsorbed and trapped by the first-stage filter layer 9 and the second-stage filter layer 10, then the air bypasses the light blocking sleeve 12 and enters the reactor sleeve 13 from the tangential air inlet pipe 16 at the bottom of the device to spirally rise, so that the purposes of longer retention time and more contact with the inner-layer photocatalyst 14 are achieved, at the moment, the optical trapping force of the titanium dioxide photocatalyst 14 loaded with noble metal is uniformly fixed by virtue of an inorganic adhesive on the inner wall of the reactor sleeve 13 and is cooperated with photocatalysis to rapidly degrade VOCs and kill germs by utilizing ultraviolet rays; the purified air is discharged from the top opening to the U-shaped air duct 6 below the side; the air is then discharged through the tapered air duct 4. The utility model discloses make the room air accord with environmental standard, VOCs then with CO₂、H₂And O and other gases are released, so that various indoor pollutants are efficiently removed, and the purposes of purifying indoor air and eliminating environmental pollution are achieved.

The utility model is suitable for indoor air with the concentration of particle pollutants between 0.01-0.5 ppm and the concentration of volatile organic pollutants between 0.01-30 ppm, the removal process of the particle pollutants is mainly completed in the filtering component inside the purifying device, and the removal rate is between 85-95%; in the central ultraviolet light catalysis area, the air inlet flow speed is regulated and controlled to be 0.01-0.08 m³And/s, the removal rate of formaldehyde and VOCs can reach 85-95% and more than 80-90%, and the removal rate of bacteria and viruses can reach more than 90%.

Claims

1. The utility model provides a novel indoor multiple pollutant integral type of efficient purification device which characterized in that includes: the air conditioner comprises a machine shell (5), wherein the top of the machine shell (5) is provided with an air outlet (1), the side wall of the machine shell (5) is provided with an air inlet (8), and a clapboard (7) for dividing the interior of the machine shell into an upper cavity and a lower cavity is arranged in the machine shell (5);

the airflow circulating assembly is arranged in the shell (5) and is positioned in the upper space of the shell (5);

the filter assembly is arranged in the machine shell (5) and positioned in the lower layer space of the machine shell (5), and comprises a primary filter layer (9) and a secondary filter layer (10);

the photocatalytic reaction assembly is arranged in the machine shell (5), is positioned in the lower-layer space of the machine shell (5) and is positioned on the inner side of the filtering assembly, and comprises a light emitting part (15), a reactor sleeve (13), a base (11) and a light blocking sleeve (12), wherein a plurality of air inlet pipes (16) penetrating through the side wall of the reactor sleeve (13) along the tangential direction of the body are distributed on the lower portion of the side wall of the reactor sleeve (13), the light emitting part (15) is arranged on the base (11), the reactor sleeve (13) is arranged on the base (11) and wraps the light emitting part (15), and the light blocking sleeve (12) blocks the reactor sleeve (13) and only has a gap for gas circulation at the bottom; the inner wall of the reactor sleeve (13) is distributed with a photocatalyst (14);

and the U-shaped air duct (6) penetrates through the partition plate (7) and is used for communicating the inside of the reactor sleeve (13) with the upper space of the shell (5).

2. The novel high-efficiency integrated indoor multi-pollutant purification device as claimed in claim 1, wherein the photocatalyst (14) is AgCo/TiO2, wherein the metal part comprises Ag with typical plasma resonance effect and Co as an auxiliary agent, the Ag loading is 0.5-2% of the mass of TiO2, and the Co loading as an auxiliary agent is 0.5-5%.

3. The novel efficient indoor multi-pollutant integrated purification device as claimed in claim 1, wherein the primary filter layer (9) and the secondary filter layer (10) are both cylindrical, the secondary filter layer (10) is located inside the primary filter layer (9) and closely attached to the primary filter layer, the primary filter layer (9) is a high-density nylon woven net, and the secondary filter layer (10) is a nano activated carbon fiber woven net which is arranged in a high-density folding manner along the vertical direction of the cylinder wall.

4. The novel high-efficiency integrated indoor multi-pollutant purification device as claimed in claim 2, wherein the photocatalyst (14) is fixed on the inner surface of the reactor sleeve (13) through an inorganic binder, the inorganic binder is aluminum phosphate, and the adding mass of the aluminum phosphate is 10% of the mass of the photocatalyst (14).

5. The novel high-efficiency indoor multi-pollutant integrated purification device as claimed in claim 1, wherein the airflow circulation assembly comprises an electric motor (2) and a conical air duct (4), and turbine blades (3) are arranged on the electric motor (2).

6. A novel high-efficiency integrated indoor multi-pollutant purification device as claimed in claim 5, wherein one end of the conical air duct (4) with a relatively large diameter is connected with the exhaust port (1), and the conical air duct (4) is positioned above the U-shaped air duct (6).

7. The new and effective indoor multi-pollutant integrated purification device according to claim 1, wherein the light emitting part (15) is a four-tube single-ended ultraviolet lamp, and the light emitting part (15) is located in the center of the reactor sleeve (13).

8. A new and effective indoor multi-pollutant integrated purification device according to claim 1, characterized in that the top end of the light blocking sleeve (12) is connected with the partition (7), and the inner wall is connected with the reactor sleeve (13) in a sealing manner.