阅读说明：本技术 一种除湿和光热催化协同的空气净化系统 (Dehumidification and photo-thermal catalysis synergistic air purification system ) 是由 王佳慧 王伟琪 卜钟鸣 袁建红 杨英 丁伟翔 文壮强 高娟 于 2021-10-08 设计创作，主要内容包括：本发明涉及一种除湿和光热催化协同的空气净化系统,包括用于供待净化空气通过的净化管道,所述净化管道沿长度方向依次包括输入端、光催化段、热催化段和输出端,所述光催化段内设置有用于促使空气进行光催化反应的光催化装置,所述热催化段内设有用于促使空气进行热催化反应的热催化装置。本发明具有净化效果好的特点。(The invention relates to an air purification system with dehumidification and photo-thermal catalysis synergistic effects, which comprises a purification pipeline for allowing air to be purified to pass through, wherein the purification pipeline sequentially comprises an input end, a photocatalytic section, a thermo-catalytic section and an output end along the length direction, a photocatalytic device for promoting air to perform photocatalytic reaction is arranged in the photocatalytic section, and a thermo-catalytic device for promoting air to perform thermo-catalytic reaction is arranged in the thermo-catalytic section. The invention has the characteristic of good purification effect.)

1. The utility model provides a dehumidification and light and heat catalysis collaborative air purification system which characterized in that: including being used for supplying treating the clean air pipeline (1) that the air that purifies passes through, clean pipeline (1) includes input (16), photocatalysis section (11), thermal catalysis section (12) and output (19) in proper order along length direction, be provided with in photocatalysis section (11) and be used for making the air carry out photocatalytic reaction's photocatalytic device (111), be equipped with in thermal catalysis section (12) and be used for making the air carry out the photocatalytic reaction's thermal catalysis device.

2. The coordinated dehumidification and photothermal catalysis air purification system as recited in claim 1, wherein: a dehumidification section (14) is arranged between the input end (16) and the photocatalysis section (11), and a first cooling device (141) used for condensing moisture in air to be purified is arranged in the dehumidification section (14).

3. The coordinated dehumidification and photothermal catalysis air purification system as recited in claim 2, wherein: a preheating section (15) is arranged between the dehumidification section (14) and the photocatalysis section (11), and a first heating device (151) for heating air to be purified is arranged in the preheating section (15).

4. The coordinated dehumidification and photothermal catalysis air purification system as recited in claim 3, wherein: the dehumidification section (14) with be equipped with semiconductor refrigeration piece (2) in preheating section (15), semiconductor refrigeration piece (2) are including refrigeration end and heating end, the refrigeration end is first cooling device (141), the heating end is first heating device (151).

5. The coordinated dehumidification and photothermal catalysis air purification system as recited in claim 3, wherein: a transition chamber (3) is arranged between the dehumidification section (14) and the preheating section (15), and the transition chamber (3) is used for inhibiting heat transfer between the dehumidification section (14) and the preheating section (15).

6. The coordinated dehumidification and photothermal catalysis air purification system as recited in claim 5, wherein: at least one group of baffle groups (31) are arranged in the transition chamber (3), each baffle group (31) comprises two baffle plates (311) which are arranged at intervals along the length direction of the purification pipeline (1), and the two baffle plates (311) are vertically and oppositely connected to the purification pipeline (1).

7. The coordinated dehumidification and photothermal catalysis air purification system as recited in claim 6, wherein: the adjacent two baffle plates (311) are intersected with the figure of any cross section of the purification pipeline (1) along the axial projection.

8. The system of claim 1, wherein the system comprises: be equipped with at least a set of guide plate group (123) in hot catalysis section (12), guide plate group (123) include a plurality of blocks along guide plate (1231) that the length direction spiral of purifying tube (1) was arranged, a plurality of guide plate (1231) along the axial projection extremely the figure of any cross section of purifying tube (1) with the cross section of purifying tube (1) inner wall is coincide, adjacent two be connected with spoiler (1232) between guide plate (1231), guide plate (1231) with spoiler (1232) combination forms the echelonment, and guide plate (1231), spoiler (1232) with the inner wall of purifying tube (1) is formed with the spiral channel that is used for supplying the one-way flow of air, guide plate (1231) with the coating has hot catalyst on spoiler (1232).

9. The system of claim 1, wherein the system comprises: a cooling section (18) is arranged between the thermocatalytic section (12) and the output end (19), and a second cooling device (181) for cooling the purified air is arranged in the cooling section (18).

10. The system of claim 2, wherein the system comprises: be equipped with dustproof filter segment (13) between input (16) and dehumidification section (14), be equipped with high efficiency filter (131) in dustproof filter segment (13).

Technical Field

The invention relates to the field of air purification, in particular to an air purification system with the cooperation of dehumidification and photo-thermal catalysis.

Background

In recent decades, the modernization and urbanization of our country are very rapid, the newly increased building area is over 10 hundred million square meters every year, and the pollution of indoor volatile organic compounds (namely VOC) is very serious due to the use of a large amount of furniture and building decoration materials. Research shows that at present, people in China have considerable health risks caused by indoor VOC exposure, wherein a plurality of high-risk pollutants in the front row comprise formaldehyde, benzene, dichlorobenzene, butadiene, acetaldehyde and the like. Most VOCs have mucous membrane irritation, can cause continuous irritation to human skin and respiratory system, and seriously affect the health and working efficiency of indoor personnel. The continuous VOC exposure not only causes sensory stimulation to human bodies, but also causes severe consequences such as hypomnesis and the like because people feel headache, nausea, vomiting, hypodynamia and the like in a short time and catch twitches and coma in severe cases when the VOC in a room reaches a certain concentration and can injure the liver, the kidney, the brain and the nervous system of people. In addition, formaldehyde has been identified by the world health organization as a carcinogenic and teratogenic substance, which may cause several serious diseases including leukemia, lung cancer, etc., causing great attention to the whole society.

At present, there are various treatment methods for VOC indoors, and they are roughly classified into adsorption, thermal catalysis, photocatalysis, plasma discharge catalysis, and composite methods according to basic principles. Wherein, because the purification material is easy to regenerate, the degradation efficiency is high, the reaction condition is simple, and the photocatalysis and the thermocatalysis are two purification technologies with great potential. The photocatalysis method is to utilize light energy as the original driving force and VOC molecules generate a series under the promotion of a photocatalystCatalytic oxidation of the column to form CO₂、H₂O, and the like; thermocatalysis refers to the conversion of organic matter into carbon dioxide and water at a certain temperature by using a solid catalyst and oxygen.

Although the photocatalysis technology has good effect on degrading macromolecular VOCs (volatile organic compounds) such as toluene, xylene and the like, micromolecular byproducts such as formaldehyde, acetaldehyde and the like can be generated, so that secondary pollution is formed; the thermocatalysis technology generally has a good purification effect on indoor small-molecule VOCs, but is difficult to treat large-molecule VOCs (limited by reaction temperature). Thus, there are limitations to the single photocatalytic or thermocatalytic techniques.

Disclosure of Invention

In order to solve the limitations of the photocatalysis technology and the thermal catalysis technology and improve the purification effect of VOC in indoor air, the invention provides an air purification system with the cooperation of dehumidification and photo-thermal catalysis.

The invention provides an air purification system with cooperation of dehumidification and photo-thermal catalysis, which adopts the following technical scheme:

the utility model provides a dehumidification and light and heat catalysis collaborative air purification system, is including being used for supplying the clean pipe that treats that the air-purifying passes through, clean pipe includes input, photocatalysis section, thermal catalysis section and output along length direction in proper order, be provided with the photocatalysis unit who is used for making the air carry out the photocatalytic reaction in the photocatalysis section, be equipped with the thermal catalysis device who is used for making the air carry out the photocatalytic reaction in the thermal catalysis section.

Optionally, a dehumidification section is arranged between the input end and the photocatalytic section, and a first cooling device for condensing moisture in the air to be purified is arranged in the dehumidification section.

Optionally, a preheating section is arranged between the dehumidification section and the photocatalytic section, and a first heating device for heating air to be purified is arranged in the preheating section.

Optionally, semiconductor refrigeration modules are arranged in the dehumidification section and the preheating section, each semiconductor refrigeration module comprises a refrigeration end and a heating end, the refrigeration end is the first cooling device, and the heating end is the first heating device.

Optionally, a transition chamber is arranged between the dehumidification section and the preheating section, and the transition chamber is used for inhibiting heat transfer between the dehumidification section and the preheating section.

Optionally, at least one baffle group is arranged in the transition chamber, the baffle group comprises two baffle plates which are arranged at intervals along the length direction of the purification pipeline, and the two baffle plates are connected to the purification pipeline in an up-down opposite manner.

Optionally, the two adjacent baffles are intersected with a figure projected to any cross section of the purification pipeline along the axial direction.

Optionally, at least one guide plate group is arranged in the thermocatalysis section, the guide plate group comprises a plurality of guide plates which are spirally arranged along the length direction of the purification pipeline, the guide plates axially project to the cross section of any cross section of the purification pipeline and are matched with the cross section of the inner wall of the purification pipeline, a spoiler is connected between every two adjacent guide plates, the guide plates and the spoilers are combined to form a ladder shape, a spiral channel for unidirectional air flow is formed on the inner walls of the purification pipeline, and a thermocatalyst is coated on the guide plates and the spoilers.

Optionally, a cooling section is arranged between the thermocatalysis section and the output end, and a second cooling device for cooling the purified air is arranged in the cooling section.

Optionally, the input with be equipped with dustproof filter segment between the dehumidification section, be equipped with high efficiency filter in the dustproof filter segment.

In summary, the invention includes at least one of the following beneficial technical effects:

1. the purifying pipeline comprises a photocatalysis section and a thermocatalysis section, and after the air to be purified enters the purifying pipeline, the air firstly passes through the photocatalysis section for photocatalysis reaction and then passes through the thermocatalysis section for thermocatalysis reaction, so that macromolecular VOCs in the air are catalyzed and degraded in the photocatalysis section, and generated micromolecular byproducts such as formaldehyde and acetaldehyde and micromolecular VOCs originally existing in the air can enter the thermocatalysis section for degradation together, thereby overcoming the limitations of the photocatalysis technology and the thermocatalysis technology and improving the purifying effect of the VOC in the air;

2. air to be purified enters the dehumidification section, water molecules in the air are condensed and removed under the cooling effect of the first cooling device, competitive adsorption of water molecules and VOC (volatile organic compound) molecules on the surface of a catalyst in the photo-thermal catalysis process of the air is avoided as far as possible, the photo-thermal catalysis reaction efficiency is ensured, and the influence of water vapor on the service life of an ultraviolet light source in the photo-catalytic section is reduced;

3. the whole temperature of the dehumidified air is raised back by arranging the preheating section, so that the degradation effect of the photocatalytic section on macromolecular VOC in the air is improved;

4. the semiconductor refrigeration module is a cooling device made of semiconductor materials, based on the Peltier effect, namely, when current passes through, heat transfer occurs inside the semiconductor refrigeration module, so that a refrigeration end and a heating end are formed, the refrigeration end is used for cooling and condensing moisture in air in a dehumidification section and a cooling section, the heating end is used for respectively preheating and reheating the air after temperature reduction and dehumidification in a preheating section and a mixing section, and an independent refrigeration system and a heating system or a heat pump system can be replaced by one or one group of semiconductor refrigeration modules, so that the purposes of energy conservation and emission reduction can be achieved, a refrigerant is not needed, the integration effect is strong, the power consumption is low, noise is avoided, maintenance is avoided, and the semiconductor refrigeration module is good in integration effect;

5. the transition chamber is arranged and used for inhibiting heat transfer of the dehumidification section and the preheating section, so that a heat insulation effect is achieved, and mutual influence of the dehumidification section and the preheating section is avoided as far as possible;

6. by arranging the baffle group in the transition chamber, when air passes through the transition chamber, the air can flow in a winding manner in the transition chamber due to the blocking effect of the baffles, so that the flow path of the air is increased, and the heat insulation effect of the transition chamber is further improved;

7. because the projection patterns of two adjacent baffle plates are intersected, the two baffle plates have an overlapped part, and after air enters the transition chamber, the air must flow in a winding manner in the transition chamber, so that the flow path of the air is further increased, and the heat insulation effect is improved;

8. by arranging the mixing section, the air is heated again before entering the thermocatalysis cavity, so that the effect of subsequent thermocatalysis reaction is improved;

9. the guide plate group is arranged in the thermal catalysis section, and the guide plate and the spoiler are integrally in the spiral step shape, so that air spirally flows in the thermal catalysis section along a single path, the length of a purification pipeline is shortened, the air purification effect is improved, more thermal catalysts can be coated, and the thermal catalysis reaction is promoted to be fully carried out;

10. the temperature of the air is increased after the air is reacted in the hot catalysis section, the content of water vapor of a reaction product is increased, and the cooling section is used for cooling and dehumidifying the air again, so that the temperature and the humidity of the air output from the purification pipeline are not too high, and the thermal comfort of the air supply flow is ensured;

11. the high efficiency filter in the dustproof filter can effectively remove dust or other impurities in the air, avoids the dust or other impurities to enter and accumulate in the purifying pipeline as far as possible, and reduces the influence of the dust or other impurities on the whole purifying process.

Therefore, the invention has the characteristic of good purification effect.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a schematic view showing the structure of the inside of a purge line in an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of the inner wall of the dehumidification section in the embodiment of the invention.

Description of reference numerals: 1. purifying the pipeline; 11. a photocatalytic section; 111. a photocatalytic device; 112. ribs; 12. a thermocatalytic stage; 122. a temperature detection module; 123. a flow guide plate group; 1231. a baffle; 1232. a spoiler; 13. a dust-proof filtering section; 131. a high efficiency filter; 14. a dehumidification section; 141. a first cooling device; 142. a water condensation tray; 143. a drain hole; 144. a needle-like projection structure; 15. a preheating section; 151. a first heating device; 16. an input end; 17. a mixing section; 18. a cooling section; 181. a second cooling device; 19. an output end; 2. a semiconductor refrigeration module; 21. aluminum sheets; 22. a heat pipe; 23. a fin; 24. a heat radiation fan; 3. a transition chamber; 31. a set of baffles; 311. and (7) a baffle plate.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiment of the invention discloses an air purification system with the cooperation of dehumidification and photo-thermal catalysis.

Referring to fig. 1 and 2, an air purification system with dehumidification and photo-thermal catalysis in cooperation comprises a purification pipeline 1 for passing through gas to be purified, wherein the purification pipeline 1 sequentially comprises an input end 16, a photocatalytic section 11, a thermo-catalytic section 12 and an output end 19 along the length direction of the purification pipeline, a photocatalytic device 111 is arranged in the photocatalytic section 11, and a thermo-catalytic device (not shown in the figure) is arranged in the thermo-catalytic section 12. The photocatalytic device 111 is used for promoting the air to be purified to generate photocatalytic reaction, and the thermal catalytic device is used for promoting the air to be purified to generate thermal catalytic reaction.

The embodiment of the invention aims to degrade macromolecular VOC substances in the air, such as toluene, xylene and the like, by arranging the photocatalysis section 11 and the thermocatalysis section 12 and carrying out photocatalytic reaction on the air to be purified through the photocatalysis section 11; then, air is introduced into the thermal catalysis section 12 to carry out thermal catalysis reaction, and micromolecule byproducts such as formaldehyde, acetaldehyde and the like generated by the photocatalytic reaction and original micromolecule VOC in the air are degraded and removed in the thermal catalysis reaction process; therefore, compared with the single photocatalytic reaction and the single thermocatalytic reaction, the air purification process can effectively improve the purification effect of the VOC in the air.

Referring to fig. 2 and 3, the inner cavity of the purification pipeline 1 may be a circular tube, a square tube, or another tube with an irregular cross section, and in the embodiment of the present invention, the inner cavity of the purification pipeline 1 is a circular tube. The purifying pipeline 1 further comprises a dustproof filtering section 13, a dehumidifying section 14 and a preheating section 15, and after air is introduced through an input end 16 of the purifying pipeline 1, the air sequentially passes through the dustproof filtering section 13, the dehumidifying section 14 and the preheating section 15 and then passes through a subsequent photocatalysis section 11 and a subsequent thermocatalysis section 12. The dust-proof filtering section 13 is provided with the high-efficiency filter 131, the high-efficiency filter 131 generally adopts superfine glass fiber paper as a filtering material, a galvanized plate, a stainless steel plate or an aluminum alloy section bar is used as an outer frame, and the appearance size of the high-efficiency filter 131 is matched with the inner diameter of the purifying pipeline 1. The high efficiency filter 131 can trap particles, dust and various suspended matters with a particle size of more than 0.3 μm, and prevent the particles or other suspended matters from being retained in the purifying pipe 1, thereby preventing the air purifying effect from being affected.

Referring to fig. 2 and 4, the dehumidification section 14 is provided with a first cooling device 141 (see fig. 3) for cooling air, and the inner wall of the dehumidification section 14 is bilaterally symmetrically provided with staggered needle-shaped protrusion structures 144, the tips of which are close to the central line of the section of the pipe, so as to increase the convection heat transfer area in the pipe and enhance the cooling and dehumidification effects. The bottom wall in the dehumidification section 14 is provided with a water condensation tray 142, the water condensation tray 142 is integrally arc-shaped, and the water condensation tray 142 is provided with a drain hole 143 penetrating through the purification pipeline 1. Because the high temperature and high humidity in summer in most areas of China cause the indoor VOC emission intensity to be obviously increased, the water vapor in the high humidity environment not only influences the service life of photocatalytic equipment (such as a UV lamp), but also causes the problem of catalytic reaction efficiency reduction because of water molecule competitive adsorption, and the problem can be effectively solved by arranging the dehumidification section 14. The preheating section 15 is provided with a first heating device 151 (see fig. 3) for preheating and warming the air passing through the dehumidifying section 14 so that the air can be returned to a normal temperature state. In the embodiment of the invention, the photocatalytic device 111 is a conventional ultraviolet light source, and when the air is usually at normal temperature, the ultraviolet light has a good effect of degrading macromolecular VOCs (volatile organic compounds) such as toluene in the air. Therefore, the preheating section 15 can increase the temperature of the air, thereby improving the purification effect of VOC.

Referring to fig. 2 and 3, the dehumidification section 14 and the preheating section 15 are provided with at least two groups of semiconductor refrigeration modules 2, each group of refrigeration modules is composed of 4 semiconductor refrigeration pieces (adopting a conventional semiconductor refrigeration piece, model TEC-12706) which are connected in series and in parallel, each semiconductor refrigeration module 2 comprises a refrigeration end and a heating end, and the working voltage is direct current 36V. The semiconductor refrigeration module 2 is a refrigeration device adopting semiconductor materials, and based on the Peltier effect, when the semiconductor refrigeration module 2 is electrified, the heat inside the semiconductor refrigeration module is transferred, so that a refrigeration end and a heating end are formed. In the embodiment of the present invention, the cooling end of the semiconductor refrigeration module 2 is the first cooling device 141, and the heating end is the first heating device 151, so that the semiconductor refrigeration module 2 simultaneously cools and dehumidifies the air in the dehumidification section 14, and heats the air in the preheating section 15. Two sets of semiconductor refrigeration modules 2 are all installed on purifying pipeline 1, and are located the both sides of dehumidification section 14 respectively, and the refrigeration end of semiconductor refrigeration module 2 is towards dehumidification section 14, and the end of heating dorsad dehumidification section 14. The two groups of semiconductor refrigeration modules 2 are respectively provided with two aluminum sheets 21 at the outer sides thereof, so that the heating ends of the semiconductor refrigeration modules 2 are abutted against the inner sides of the aluminum sheets 21, and the aluminum sheets 21 can be fixed by fasteners such as bolts or rivets. One end of each aluminum sheet 21 close to the photocatalytic section 11 is connected with a heat pipe 22, a first end of the heat pipe 22 is embedded in the aluminum sheet 21, and a second end of the heat pipe extends into the preheating section 15 of the purifying pipeline 1, so that heat at the heating end of the semiconductor is guided into the preheating section 15. The second end of each heat pipe 22 is provided with a plurality of fins 23, and the heat pipe 22 is further provided with a heat dissipation fan 24, so that the energy in the heat pipe 22 is rapidly led out to the preheating section 15.

A transition chamber 3 is provided between the preheating section 15 and the dehumidifying section 14 for separating the preheating section 15 and the dehumidifying section 14. Two sets of baffle groups 31 are arranged in the transition chamber 3, and each set of baffle groups 31 comprises two baffles 311 arranged at intervals along the length direction of the purification pipe 1. In the embodiment of the present invention, the baffle 311 is a large semi-circular plate formed by a section of major arc and a straight edge, and the arc-shaped portion of the baffle 311 is attached to the inner wall of the purification pipeline 1. The baffles 311 in the same set of baffles 31 are arranged such that one baffle 311 is installed on the inner top wall of the purge conduit 1, the other baffle 311 is installed on the inner bottom wall of the purge conduit 1, and the straight edges of the two baffles 311 are arranged in parallel. In the prior art, a common baffle 311 is also arranged in the pipeline, the baffle 311 is mainly used for performing transverse scouring on the tube bundle in the pipeline, and the baffle 311 in the embodiment of the invention has an effect of blocking the air flow, so that the flow path of the air in the transition chamber 3 is increased, and the heat transfer of the dehumidification section 14 and the preheating section 15 is inhibited. It is understood that there is at least one, two, three, four, etc. set of baffle groups 31.

The photocatalytic device 111 is a common UV lamp and is cylindrical, a plurality of ribs 112 are arranged in the photocatalytic section 11, the ribs 112 are arranged around the photocatalytic device 111 in a circumferential and equidistant manner, the first ends of the ribs 112 are connected to the outer wall of the photocatalytic device 111, and the second ends of the ribs 112 are connected to the inner wall of the purification pipeline 1, so that the photocatalytic device 111 is supported by the plurality of ribs 112 and fixed on the axis position of the purification pipeline 1. All the fins 112 are coated with a photocatalyst, which may be common and cheap nano titanium dioxide, or a noble metal catalyst added with noble metal elements such as platinum and palladium, and in the embodiment of the present invention, nano titanium dioxide is used as the photocatalyst.

The purifying pipeline 1 further comprises a mixing section 17 and a cooling section 18, the mixing section 17 is arranged between the photocatalytic section 11 and the thermocatalytic section 12, and the cooling section 18 is arranged between the thermocatalytic section 12 and an output end 19 of the purifying pipeline 1. In the embodiment of the present invention, the cooling section 18 and the dehumidifying section 14 of the purifying pipeline 1 are both made of thin aluminum alloy, the material of the rest part of the purifying pipeline 1 is not particularly limited, and the outer wall of the purifying pipeline 1 needs to be subjected to heat preservation treatment, such as coating with common rock wool. The cooling section 18 is provided with a second cooling device 181 for cooling air, and the inner wall of the cooling section 18 is also provided with needle-shaped protrusion structures 144 (see fig. 4) which are arranged symmetrically left and right and staggered, and the tips of the needle-shaped protrusion structures are close to the center line of the section of the pipe, so as to enhance the cooling and dehumidifying effects. Similarly to the dehumidification section 14 and the preheating section 15, the cooling section 18 is also provided with two sets of semiconductor refrigeration modules 2, with the refrigeration ends of the semiconductor refrigeration modules 2 facing the cooling section 18 and the heating ends facing away from the cooling section 18. The outer side of the cooling section 18 is provided with an aluminum sheet 21, the aluminum sheet 21 can be fixed by fasteners such as bolts and rivets, and the heating end of the semiconductor refrigeration module 2 is abutted against the inner side of the aluminum sheet 21, so that the heat of the semiconductor refrigeration module 2 is transferred to the aluminum sheet 21. One end of the aluminum sheet 21 close to the mixing section 17 is connected with a heat pipe 22, a first end of the heat pipe 22 is embedded in the aluminum sheet 21, and a second end of the heat pipe 22 extends into the mixing section 17 and is arranged close to the thermocatalytic section 12. The bottom wall of the cooling section 18 is also provided with a condensate tray 142 which is also provided with a drain hole 143 extending through the conduit.

The second end of the heat pipe 22 is provided with a plurality of fins 23, and is further provided with a heat radiation fan 24, the fins 23 are beneficial to accelerating heat conduction, and the heat radiation fan 24 introduces heat into the thermal catalysis section 12, so that the air is reheated. And heat-conducting silicone grease is coated between the semiconductor refrigeration module 2 and the purification pipeline 1 and between the semiconductor refrigeration module 2 and the aluminum sheet 21, so that good contact between the semiconductor refrigeration module 2 and the purification pipeline 1 and between the semiconductor refrigeration module 2 and the aluminum sheet 21 is ensured, and the heat exchange effect is improved.

The thermocatalysis section 12 is provided with two groups of guide plate groups 123 which are continuously arranged along the length direction of the purification pipeline 1, each group of guide plate group 123 comprises three guide plates 1231 which are spirally arranged along the axial direction of the purification pipeline 1, each guide plate 1231 is fan-shaped, and the included angle between two straight edges is 120 degrees, so that the graph of any cross section of the purification pipeline 1 projected by the three guide plates 1231 along the axial direction is a whole circle. It can be understood that the same guide plate group 123 includes at least three guide plates 1231, which may be four guide plates, an included angle between two straight sides of each guide plate 1231 is 90 °, or five guide plates, an included angle between two straight sides of each guide plate 1231 is 72 °, and so on; the number of the guide plate groups 123 is at least one, two, three, four, or the like, and the number of the guide plate groups 123 may not be an integer, and only the number of the guide plates 1231 needs to be an integer. A rectangular spoiler 1232 is connected between two adjacent deflectors 1231, two ends of the spoiler 1232 are respectively connected with two adjacent straight edges of the two deflectors 1231, so that the deflectors 1231 and the spoiler 1232 are combined to form a ladder shape, a spiral channel for one-way circulation of air is formed between the deflectors 1231, the spoiler 1232 and the inner wall of the purification pipeline 1, and the deflectors 1231 and the spoiler 1232 are both coated with a thermal catalyst.

In the prior art, a spiral guide plate 1231 may exist in the pipeline, and the main purpose is to perform lateral washing on a tube bundle in the pipeline, but in the embodiment of the present invention, the guide plate 1231 and the spoiler 1232 are provided to increase a reaction path of air, so that VOC molecules in the air can fully react in a shorter purification pipeline 1, which is beneficial to improving the purification effect of the air while shortening the length of the purification pipeline 1; due to the existence of the spoiler 1232, the air can only flow along a single spiral channel, and compared with the case that the spoiler 1232 is not arranged, the spiral channel formed by the scheme is longer, which is beneficial to increasing the flow path of the air, and can be coated with more thermal catalysts to promote the thermal catalytic reaction to be fully performed.

The thermal catalyst can be metal oxide supporting noble metal, and can also be metal oxide supporting non-noble metal. When a noble metal-supported metal oxide is selected as the thermal catalyst, the thermal catalytic reaction can be performed at a lower temperature, but the catalyst is high in cost and is easily deactivated; when the metal oxide loaded with non-noble metal is selected as the thermal catalyst, the thermal catalytic reaction needs to be carried out at a higher temperature, and the method has the advantages of cost saving and high thermal catalyst activity. Because the heating end of the semiconductor refrigeration module 2 has an upper temperature limit, which is usually not more than 90 ℃, if the non-noble metal-loaded metal oxide is used as the thermal catalyst, the upper temperature limit is lower than the thermal catalytic reaction temperature of the VOC molecules, and therefore the heating end of the semiconductor refrigeration module 2 cannot completely provide the energy required by thermal catalysis. In the embodiment of the present invention, the thermal catalytic device is provided to raise the ambient temperature in the thermal catalytic section 12 to the reaction temperature, thereby solving the above-mentioned problems.

The above-mentioned flow guide plate 1231 and the flow blocking plate 1232 together form a thermal catalytic device, the thermal catalytic device includes a sheet-like metal plate and a heater wire embedded inside the metal plate, the metal plate may be made of copper or other metals with good heat conduction effects, and the embodiment of the present invention is not limited to this specifically. A temperature detection module 122 is further disposed in the thermocatalytic section 12, and the temperature detection module 122 is electrically connected to the thermocatalytic device and is a common thermocouple temperature sensor. When the temperature detection module 122 detects that the temperature in the thermal catalysis section 12 is lower than the optimal reaction temperature of the thermal catalyst, the temperature detection module 122 sends a signal to the thermal catalysis device to control the thermal catalysis device to work, so as to raise the temperature to the optimal reaction temperature.

The air after the photocatalytic reaction enters the mixing section 17, the air passes through the heating end of the semiconductor refrigeration module 2 for reheating and heating, and then directly enters the thermal catalysis section 12, the thermal catalysis device further heats and heats the air, and the thermal catalysis reaction process is completed under the catalysis of the thermal catalyst; after the air is subjected to the thermocatalytic reaction, the air continuously flows to the cooling section 18, and the cooling end of the semiconductor cooling module 2 cools and cools the purified air, so that the condition that the temperature of the air discharged from the output end 19 is too high is avoided. When the thermal catalytic reaction selects noble metal catalysts such as platinum, gold and the like, VOC molecules can react at a lower temperature, a thermal catalytic device usually does not need to work, the temperature of the purified air is lower and carries water vapor generated by the reaction, the temperature of the air is reduced again when the air passes through the cooling section 18, condensate water is separated out, and therefore the cooling section 18 also plays a role in dehumidification. By arranging the temperature detection module 122, the reaction temperature in the thermal catalysis section 12 is monitored in real time, and when the monitored environment temperature is deviated from the optimal reaction temperature, the environment temperature is adjusted to the optimal range by controlling the thermal catalysis device, so that the reaction efficiency of thermal catalysis is improved.

For convenience of understanding, the embodiment of the present invention provides a more specific implementation scenario. Firstly, air to be purified is input from an input end 16 of the purifying pipeline 1, and the air firstly passes through the dustproof filtering section 13, so that particulate matters or other suspended matters in the air are retained in the high-efficiency filter 131; then the air enters the dehumidification section 14, the refrigeration end of the semiconductor refrigeration module 2 condenses the moisture in the air into liquid water, and the liquid water flows into the water condensation disc 142 and is discharged from the water discharge port; air enters the preheating section 15 along the transition chamber 3, heat of the heating end of the semiconductor refrigeration module 2 is guided into the preheating section 15 through the heat pipe 22 and the fins 23, and the temperature of the air rises after passing through the preheating section 15.

Then, the air enters the photocatalytic section 11, the VOC molecules in the air fully contact with the photocatalyst on the fins 112, and the photocatalytic reaction is carried out under the irradiation of ultraviolet rays; then, the air enters the mixing section 17 and is mixed together, the heat of the heating end of the semiconductor refrigeration module 2 is introduced into the mixing section 17 through the heat pipe 22 and the fins 23, the heat dissipation fan 24 on the heat pipe 22 introduces the air and the heat into the thermal catalysis section 12, the air spirally flows in the thermal catalysis section 12, and the air fully contacts with the thermal catalysts on the flow guide plate 1231 and the flow blocking plate 1232 to generate a thermal catalysis reaction. The temperature detection module 122 is capable of monitoring the reaction temperature of the thermocatalytic stage 12 in real time to facilitate adjustment of the temperature to a suitable range. The purified air passes through the cooling section 18 and is finally discharged from the output end 19 of the purification channel, and the refrigeration end of the semiconductor refrigeration module 2 is used for cooling the purified air so as to prevent the temperature of the discharged air from being too high.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.