An air purification unit

Abstract

The present invention relates to an air purification unit, comprising a cyclone module arranged in an air flow channel facing the wind, the cyclone module being a plurality of cyclone tubes arranged in an array, a guide blade being provided on the air inlet side of the cyclone tube, a photocatalyst material layer being provided at least partially on the inner surface of the cyclone tube, an ultraviolet light source being provided on the air outlet side of the cyclone tube, the ultraviolet light emitted by the ultraviolet light source being irradiated on the photocatalyst material layer in the cyclone tube, and the air being spirally guided out of the cyclone tube by the guide blades. The present invention effectively solves the technical problems in the existing photocatalytic technology, such as the short contact time between air and photocatalyst material, small contact area, low purification efficiency, poor protection of light source, short service life, high cost and frequent maintenance. The purification unit of the present invention greatly improves the purification efficiency of photocatalytic purification, extends the service life of the purification unit, and reduces the maintenance frequency, thereby greatly promoting the popularization of environmentally friendly and clean photocatalytic purification technology.

Description

Technical Field

[0001] The present invention relates to the field of air purification, and in particular to an air purification unit for an air flow channel. Background Art

[0002] With the improvement of production and living quality, more and more people are beginning to pay attention to the air environment. Affected by the epidemic, people are paying more and more attention to the indoor air environment in places where people gather. However, the existing purification technology is limited by the environment, cost and side effects, and cannot fully meet people's requirements for respiratory health.

[0003] At present, the main purification technologies include photocatalytic purification, UV sterilization purification and ozone disinfection, electrostatic dust removal, negative ion purification, HEPA fiber mesh filtration, activated carbon adsorption purification and other physical purification methods, high-temperature sintering and other technologies. Among these technologies, UV purification is generally effective against bacteria and viruses, but ineffective against particulate matter and VOCs. Generally, ultraviolet lamps are effective in the short term, but long-term use requires regular maintenance and dust removal. Ozone disinfection is generally not suitable for use in the presence of people (long-term high-concentration inhalation of ozone will irritate the human respiratory mucosa), and is corrosive to rubber products such as sofas, medical rubber gloves, and rubber tubes. There are great limitations on its use; among traditional physical purification methods, technologies such as electrostatic dust removal, HEPA fiber mesh filtration, and activated carbon adsorption purification have high efficiency in purifying particulate matter, but poor purification effect on sterilization and disinfection, and the resistance of the entire system is large; negative ion purification is often used to reduce the concentration of particulate matter in the air, and has no effect on bacteria and viruses, nor can it decompose pollutants. Its main function is to refresh the air, and it cannot fundamentally solve air pollution; and purification methods such as high-temperature sintering are generally used for the purification of industrial treatment of organic matter, etc. Under the action of high temperature, organic matter, bacteria, viruses, etc. are killed. This method is very expensive and is only suitable for industrial exhaust purification.

[0004] Relatively speaking, the use of photocatalytic purification can effectively sterilize and disinfect without generating secondary pollution. Compared with other purification methods, this purification method is more environmentally friendly. However, photocatalytic technology requires the synergistic effect of photocatalyst materials and effective light sources to be triggered. In addition, photocatalytic purification requires sufficient contact time to achieve high-efficiency purification. The photocatalytic technology currently used is generally used in combination with physical purification methods, using fiber filters and activated carbon to purify particulate matter and VOCs to protect subsequent photocatalyst light sources and photocatalyst materials. Due to the limited purification effect on fine particulate matter, it is generally necessary to replace the filter regularly to ensure that the subsequent photocatalyst material has a continuous sterilization and disinfection effect.

[0005] In the traditional photocatalyst purification method, the air flow rate in the flow channel is relatively fast, and the air is output without sufficient contact with the photocatalyst material, so the actual purification efficiency is low. In actual applications, a composite module composed of several technologies is installed in the air flow channel. The wind speed is relatively high, and the photocatalyst material and light source are generally blown directly. The protection of the light source is poor, the sterilization and disinfection effect is poor, the service life is short, and it is only effective in the short term. This has led to the stagnation of photocatalyst purification technology and the purification effect is difficult to specifically reflect.

[0006] Therefore, in order to solve the technical difficulties in existing photocatalytic technology such as short contact time between air and photocatalyst materials, small contact area, low purification efficiency, poor protection of light sources, short service life, high cost and frequent maintenance, it is necessary to study a purification module with a long service life and the ability to meet daily efficient sterilization and disinfection, and solve the shortcomings of traditional photocatalytic technology. Summary of the Invention

[0007] The purpose of the present invention is to address the technical difficulties in traditional photocatalyst purification technology, such as short contact time between air and photocatalyst material, small contact area, short life of purification unit, poor protection of light source, low purification efficiency and high maintenance cost. An air purification unit for air flow channel is proposed to extend the contact time and contact area between air and photocatalyst material, protect the light source in photocatalyst purification, improve purification efficiency, extend the service life of purification unit, reduce maintenance frequency, and promote the popularization of environmentally friendly and clean photocatalyst purification technology.

[0008] To achieve the above-mentioned objectives, the present invention provides an air purification unit, which is characterized in that it includes a cyclone module arranged in an air flow channel facing the wind, the cyclone module is a plurality of cyclone tubes arranged in an array, guide blades are arranged on the air inlet side of the cyclone tube, a photocatalyst material layer is at least partially arranged on the inner surface of the cyclone tube, an ultraviolet light source is arranged on the air outlet side of the cyclone tube, the ultraviolet light emitted by the ultraviolet light source is irradiated on the photocatalyst material layer in the cyclone tube, and the air is spirally guided out of the cyclone tube through the guide blades.

[0009] Preferably, the ultraviolet light source is a plurality of ultraviolet lamp beads arranged in an array, and the ultraviolet lamp beads correspond coaxially to the cyclone tubes one by one.

[0010] In particular, the cyclone module and the ultraviolet light source are modularly assembled, the optical power of the ultraviolet lamp beads is greater than or equal to 5mW, the light-emitting angle is 15° to 150°, and the wavelength range of the ultraviolet light emitted by the ultraviolet light source is 240nm to 420nm.

[0011] Preferably, the inner diameter of the cyclone tube is 10-20 mm, the length of the cyclone tube is 50-100 mm, and the air flow rate of each cyclone tube is 0.3-2 m 3 / h, and the air flow deviation in different cyclone tubes is less than or equal to 20%.

[0012] Preferably, the photocatalyst material layer includes one or both of a nano zinc oxide coating and a nano titanium dioxide coating.

[0013] Preferably, the photocatalyst material layer is fixed in the cyclone tube by coating, spraying or dipping nano-photocatalyst sol.

[0014] Particularly, the content of nano titanium dioxide in the nano photocatalyst sol is 0.5% to 5%.

[0015] In particular, a plurality of ultraviolet lamp beads arranged in an array form an ultraviolet lamp board as a whole. The cyclone tube is sealed and fixed in a stepped manner along the direction of air circulation, and the gap between the sealed and fixed part of the cyclone tube and the ultraviolet lamp board gradually decreases from the outside to the inside. The air is guided out of the cyclone tube through the gap between the sealed and fixed part of the cyclone tube and the ultraviolet lamp board and then flows out from the surrounding areas of the ultraviolet lamp board.

[0016] Preferably, the cyclone module is made of a plurality of cyclone tubes sealed and fixed by a stepped mounting frame, and the ends of adjacent cyclone tubes are aligned.

[0017] Preferably, the cyclone module is made of a plurality of cyclone tubes which are sealed and fixed by integral injection molding, and the ends of adjacent cyclone tubes are aligned.

[0018] Based on the above technical solution, the advantages of the present invention are:

[0019] The present invention purifies air through a combination of a cyclone module and an ultraviolet light source. On the one hand, a stable cyclone is formed when the air passes through the cyclone module, and the air moves centrifugally along the side wall of the cyclone tube, which greatly prolongs the residence time of the air in the cyclone module and promotes full contact between the air and the photocatalyst material layer. Under the irradiation of ultraviolet light, the purification efficiency of the entire purification module will be greatly improved; on the other hand, the air discharged by the cyclone module is a cyclone, which has almost no impact force on the axial position of the end of the cyclone tube, which can also effectively protect the ultraviolet light source; the air purification unit composed of the two modules effectively improves the purification efficiency of pollutants. At the same time, ultraviolet light is combined with photocatalyst material to purify the airflow, which is particularly effective for purifying bacteria, viruses and organic matter, greatly improving the purification efficiency of the entire purification unit.

[0020] The present invention takes a different approach and effectively solves the technical problems in existing photocatalytic technology, such as short contact time between air and photocatalyst materials, small contact area, low purification efficiency, poor protection of light sources and frequent maintenance. The purification unit of the present invention greatly improves the purification efficiency of photocatalytic purification, extends the service life of the purification unit, and reduces the maintenance frequency, thereby greatly promoting the popularization of environmentally friendly and clean photocatalytic purification technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 is a schematic diagram of an air purification unit;

[0023] Figure 2 This is a schematic diagram of the cyclone module of the air purification unit;

[0024] Figure 3 Schematic diagram of the ultraviolet light source of the air purification unit. DETAILED DESCRIPTION

[0025] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments.

[0026] The present invention provides an air purification unit, such as Figure 1 As shown, a preferred embodiment of the present invention is shown. It includes a cyclone module 1 arranged in an air flow channel facing the wind, the cyclone module 1 is a plurality of cyclone tubes 2 arranged in an array, the array arrangement is convenient for production and modular assembly, can effectively and evenly purify pollutants, and ensure the wind speed flowing through the purification module, the air inlet side of the cyclone tube 2 is provided with a guide fan blade, the guide fan blade can effectively guide the passing airflow into a centrifugal cyclone, the inner surface of the cyclone tube 2 is at least partially provided with a photocatalyst material layer, the photocatalyst material layer is used as a trigger material for sterilization and purification of organic matter, and can greatly improve the purification efficiency of the entire purification unit, the air outlet side of the cyclone tube 2 is provided with an ultraviolet light source 4, the ultraviolet light emitted by the ultraviolet light source 4 is irradiated on the photocatalyst material layer in the cyclone tube 2, the ultraviolet light source effectively provides energy to the trigger material, triggering the photocatalyst material to purify, and at the same time, the ultraviolet light source can also effectively purify the entire device to a large extent, and the air is spirally guided out of the cyclone tube 2 by the guide fan blade.

[0027] like Figure 1 As shown, the UV light source 4 is a plurality of UV lamp beads 3 arranged in an array, and the UV lamp beads 3 correspond coaxially with the cyclone tube 2. The centrifugal force generated by the cyclone module 1 can also effectively protect the UV light source 4 at the axis position, thereby extending the service life of the lamp beads. The air purification unit composed of the two modules effectively improves the purification efficiency of pollutants.

[0028] In particular, the cyclone module 1 and the ultraviolet light source 4 are modularly assembled. The cyclone module 1 and the ultraviolet light source 4 are modular units arranged in an array and coaxial. The two correspond to each other and can achieve modular assembly. At the same time, modular assembly can also be achieved between the air purification units. The purification units are spliced together for easy production and installation. The optical power of the ultraviolet lamp bead 3 is greater than or equal to 5mW, the luminous angle is 15° to 150°, and the ultraviolet light emitted by the ultraviolet light source 4 has a wavelength range of 240nm to 420nm. The ultraviolet light wavelength range is 240nm to 420nm. The ultraviolet light energy within this range is relatively high, and the triggering effect on the photocatalyst material is good. At the same time, the ultraviolet light within this range has a good killing effect on bacteria and viruses. When the air flow rate is slow and there is sufficient contact, it can effectively kill microorganisms in the air.

[0029] Preferably, the inner diameter of the cyclone tube 2 is 10-20 mm, the length of the cyclone tube 2 is 50-100 mm, and the air flow rate of each cyclone tube 2 is 0.3-2 m 3 / h, and the air flow rate deviation within different cyclone tubes 2 is less than or equal to 20%. Setting the flow rate within the cyclone tubes 2 can ensure the air flow rate flowing through each cyclone tube 2. The flow rate deviation is less than or equal to 20%, which ensures uniform air flow rate within the cyclone tubes 2, thereby ensuring uniform air flow rate within the entire cyclone module 1, forming a uniform air flow field, avoiding excessive local wind speeds that shorten the contact time between pollutant gases and photocatalysts, and ensuring the purification effect.

[0030] Preferably, the photocatalyst material layer comprises one or both of a nano-zinc oxide coating and a nano-titanium dioxide coating. Both nano-zinc oxide and nano-titanium dioxide are photocatalyst materials with large specific surface areas and can effectively serve as light-triggered materials for air purification. The two materials can be used individually or in combination. When used in combination, the nano-titanium dioxide coating is generally placed on top of the nano-zinc oxide coating, significantly enhancing the purification effect.

[0031] Preferably, the photocatalyst material layer is fixed in the cyclone tube by coating, spraying or dipping nano-photocatalyst sol.

[0032] In particular, the content of nano titanium dioxide in the nano photocatalyst sol is 0.5% to 5%. This ratio is more economical and can reduce the use cost while ensuring that the photocatalyst material layer achieves the purification effect.

[0033] Preferably, the guide fan blades are arranged in the cyclone tube 2. This arrangement can effectively guide the air to form a cyclone with centrifugal force, prompting the air to move in a spiral manner along the side wall, so that the air is in full contact with the photocatalyst material under ultraviolet light. The spiral movement of the air extends the trajectory of air circulation, thereby extending the time for the photocatalyst material to contact gaseous pollutants and microorganisms, thereby improving the reaction time and ensuring the purification efficiency of the photocatalyst material.

[0034] Further, if Figure 3 As shown in FIG, a plurality of UV lamp beads 3 arranged in an array form a UV lamp panel as a whole. Figure 1 、 Figure 2 As shown, the cyclone tube 2 is sealed and fixed in a stepped manner along the air flow direction, and the gap between the sealing and fixing part of the cyclone tube 2 and the UV lamp panel gradually decreases from the outside to the inside to ensure a relatively uniform air flow field, thereby ensuring uniform flow rate in different cyclone tubes 2. Figure 1 As shown, the air is guided out from the cyclone tube 2 through the gap between the sealing fixing portion of the cyclone tube 2 and the ultraviolet lamp panel, and then flows out from around the ultraviolet lamp panel. The entire air flow field is relatively uniform.

[0035] like Figure 2 As shown, the cyclone module 1 is constructed from several cyclone tubes 2, sealed and secured together via a stepped mounting frame. The ends of adjacent cyclone tubes 2 are aligned, meaning they are fixed at different locations and their ends are flush, facilitating installation. The stepped mounting frame ensures a uniform air velocity after passing through the cyclone tubes 2, ensuring a constant air velocity between the cyclone module 1 and the UV light source 4, further enhancing purification effectiveness and protecting the UV light source.

[0036] In particular, the cyclone module 1 is made of several cyclone tubes 2 sealed and fixed by integral injection molding, with the ends of adjacent cyclone tubes 2 aligned. The cyclone tubes can be integrally injection molded, which facilitates modular production and assembly and can greatly improve the production efficiency of the cyclone module.

[0037] The technical principle of the present invention is:

[0038] The polluted air is transported to the air purification unit through the air flow channel under the action of the fan power. Since the cyclone tube 2 in the cyclone module is provided with a guide fan blade, the airflow of the polluted air begins to rotate against the wall when passing through the cyclone tube. Under the action of the cyclone in the cyclone tube 2, the polluted air fully adheres to the wall and moves in a spiral manner. The inner wall of the cyclone tube 2 is provided with a photocatalyst material layer, and under the action of the ultraviolet light source at the end, the polluted air fully contacts the photocatalyst material layer and triggers catalytic purification. Since the air is in full contact with the photocatalyst material and the ultraviolet light source is continuously irradiated, the spiral motion path greatly prolongs the contact time between the air and the photocatalyst material and the time of ultraviolet light sterilization, thereby greatly improving the purification efficiency of the entire purification unit. At the same time, the centrifugal force generated by the cyclone module has almost no impact force on the axial position of the end of the cyclone tube 2, which can also effectively protect the ultraviolet light source and extend the service life of the ultraviolet light source.

[0039] The purified clean air flows out from the end of the cyclone tube 2 and is continuously irradiated by the ultraviolet light source, and flows out from all sides of the purification module. Since the ends of the cyclone tubes 2 are aligned, and the fixed frames of each cyclone tube 2 or the integrated frames injection-molded with the cyclone tubes 2 are arranged in a stepped manner, the air flow rate after flowing through the cyclone tubes 2 is uniform, ensuring that the air flow rate between the cyclone module 1 and the ultraviolet light source 4 is constant, further ensuring the purification effect, and also protecting the ultraviolet light source.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention. They should all be included in the scope of the technical solution for protection of the present invention.

Claims

1. An air purification unit, characterized in that: The invention comprises a cyclone module (1) arranged in an air flow channel facing the wind, wherein the cyclone module (1) is a plurality of cyclone tubes (2) arranged in an array, a guide blade is arranged on the air inlet side of the cyclone tube (2), a photocatalyst material layer is at least partially arranged on the inner surface of the cyclone tube (2), and the photocatalyst material layer includes one or both of a nano zinc oxide coating and a nano titanium dioxide coating, and an ultraviolet light source (4) is arranged on the air outlet side of the cyclone tube (2), and the ultraviolet light emitted by the ultraviolet light source (4) is irradiated on the photocatalyst material layer in the cyclone tube (2), and the air is spirally guided by the guide blade. The cyclone tube (2) is provided with a plurality of ultraviolet lamp beads (3) arranged in an array. The ultraviolet lamp beads (3) correspond to the cyclone tube (2) one by one and are coaxial. The plurality of ultraviolet lamp beads (3) arranged in an array form an ultraviolet lamp board as a whole. The cyclone tube (2) is sealed and fixed in a stepped manner along the direction of air flow, and the gap between the sealing and fixing part of the cyclone tube (2) and the ultraviolet lamp board gradually decreases from the outside to the inside. The air is guided out of the cyclone tube (2) through the gap between the sealing and fixing part of the cyclone tube (2) and the ultraviolet lamp board and then flows out from the periphery of the ultraviolet lamp board.

2. The air purification unit according to claim 1, characterized in that: The cyclone module (1) and the ultraviolet light source (4) are modularly assembled, the optical power of the ultraviolet lamp bead (3) is greater than or equal to 5 mW, the luminous angle is 15° to 150°, and the wavelength range of the ultraviolet light emitted by the ultraviolet light source (4) is 240 nm to 420 nm.

3. The air purification unit according to claim 1, characterized in that: The inner diameter of the cyclone tube (2) is 10-20 mm, the length of the cyclone tube (2) is 50-100 mm, and the air flow rate of each cyclone tube (2) is 0.3-2 m 3 / h, and the deviation of the air flow in different cyclone tubes (2) is less than or equal to 20%.

4. The air purification unit according to claim 1, characterized in that: The photocatalyst material layer is fixed in the cyclone tube by coating, spraying or dipping the nano photocatalyst sol.

5. The air purification unit according to claim 4, characterized in that: The content of nano titanium dioxide in the nano photocatalyst sol is 0.5% to 5%.

6. The air purification unit according to claim 1, characterized in that: The cyclone module (1) is made of a plurality of cyclone tubes (2) that are sealed and fixed via a stepped mounting frame, with the ends of adjacent cyclone tubes (2) aligned.

7. The air purification unit according to claim 1, characterized in that: The cyclone module (1) is made of a plurality of cyclone tubes (2) which are sealed and fixed by integral injection molding, and the ends of adjacent cyclone tubes (2) are aligned.

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