CN110743360A - Photocatalytic air purifier - Google Patents

Photocatalytic air purifier Download PDF

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Publication number
CN110743360A
CN110743360A CN201911151567.8A CN201911151567A CN110743360A CN 110743360 A CN110743360 A CN 110743360A CN 201911151567 A CN201911151567 A CN 201911151567A CN 110743360 A CN110743360 A CN 110743360A
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CN
China
Prior art keywords
photocatalytic
air
filter screen
light source
shell
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911151567.8A
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Chinese (zh)
Inventor
王宇骅
周家德
王康
王科琴
葛云飞
王龙生
宋维广
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Shanghai Yi Nai New Material Science And Technology Ltd
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Shanghai Yi Nai New Material Science And Technology Ltd
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Publication date
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Priority to CN201911151567.8A priority Critical patent/CN110743360A/en
Publication of CN110743360A publication Critical patent/CN110743360A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8678—Removing components of undefined structure
    • B01D53/8687—Organic components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
    • B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/80—Type of catalytic reaction
    • B01D2255/802—Photocatalytic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B01D2258/0283—Flue gases

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Catalysts (AREA)

Abstract

The embodiment of the invention discloses a photocatalytic air purifier, which comprises a shell, a preposed filter screen, a blower, a light source, a photocatalytic component and a tail end filter screen, wherein the shell is cylindrical, the bottom of the shell is provided with an air inlet, the preposed filter screen is arranged on the inner side of the air inlet, the blower is arranged above the preposed filter screen, the photocatalytic component is hollow and cylindrical, the middle of the photocatalytic component is an air channel, the light source is vertically arranged in the middle of the air channel, the tail end filter screen is arranged on the outer ring of the photocatalytic component, a flow homogenizing plate is arranged between the tail end filter screen and the photocatalytic component, the side of the flow homogenizing plate close to the photocatalytic component is coated with a light reflecting coating, the shell comprises an air outlet plate, the air outlet plate is positioned on the inner ring of the tail end filter screen, and the inner side of the air outlet plate is provided, and the photocatalytic reaction area is large, the airflow passes uniformly and the number of light sources is small.

Description

Photocatalytic air purifier
Technical Field
The invention relates to the field of air purification equipment, is used for purifying organic pollutants and filtering solid particulate pollutants, and particularly relates to a photocatalytic air purifier.
Background
The rapid development of industrialization and urbanization in China brings better living conditions for the majority of people, and simultaneously, the sources and the types of air pollution become very complicated. In daily life, the problem of diversification of organic pollutants is faced, and the harm of solid particulate pollutants such as PM 2.5 and the like to the health of people is also faced.
At present, the main methods for treating solid particulate pollutants include a mechanical filtration method, an anion adsorption method and an electrostatic adsorption method. Wherein the mechanical filtration method can achieve 99.97% interception filtration efficiency on particles with particle size of more than 0.3 micron by using a high-efficiency air particulate filter (HEPA filter screen). For organic pollutants, the main processes currently used for treatment include high-temperature catalytic oxidation, activated carbon adsorption, microbial adsorption degradation and photocatalytic decomposition purification. Wherein the high-temperature catalytic oxidation technology, the activated carbon adsorption technology and the microbial adsorption degradation technology respectively have one or more problems of high-temperature condition requirement, high regeneration investment, poor material selectivity and treatment effect and the like.
Photocatalytic decomposition techniques, particularly of titanium dioxide (TiO)2) The photocatalytic decomposition and purification technology has the following technical characteristics: (1) thoroughness: the organic pollutants are efficiently and completely oxidized into carbon dioxide and water, and secondary pollution is not left; (2) low-temperature deep reaction: the oxidation reaction can be carried out at room temperature; (3) broad spectrum property: effective against a wide variety of organic species ranging from hydrocarbons to carboxylic acids; (4) durability: TiO 22The lifetime of the photocatalyst is infinite. General TiO2The photocatalytic air cleaner uses a catalyst carrier having a square shape and/or a flat shape, so that there are problems in that the light source receiving is not uniform, the photocatalytic reaction area is limited, and the air flow passes through the air flow non-uniformly. Meanwhile, in order to allow the light source to cover all the catalyst carriers, a plurality of light sources are generally used, from whichTo produce TiO2High energy consumption of the photocatalytic air purifier.
At present, few existing air purification devices simultaneously use a photocatalytic decomposition purification technology and a mechanical filtration method to respectively treat organic and solid particulate pollutants. Therefore, it is of interest to design a photocatalytic air purifier that is efficient, low energy consuming and capable of both purifying organic pollutants and filtering solid particulate pollutants.
Disclosure of Invention
In view of this, the embodiment of the present invention provides a photocatalytic air purifier, which not only can treat two kinds of pollutants, namely organic pollutants and solid particles, efficiently, but also has the advantages of uniform light receiving and receiving of a photocatalytic component, large photocatalytic reaction area, uniform airflow passing and small number of light sources.
The embodiment of the invention discloses a photocatalytic air purifier, which comprises a shell, a front filter screen, a blower and a light source, the air inlet is installed at the bottom of the shell, the front filter screen is installed on the inner side of the air inlet, the air blower is installed above the front filter screen, the photocatalytic component is hollow and cylindrical, an air channel is formed in the middle of the photocatalytic component, the diameter of the air channel is equal to that of an air outlet of the air blower, the light source is vertically installed in the middle of the air channel, the tail filter screen is installed on the outer ring of the photocatalytic component, a flow equalizing plate is arranged between the tail filter screen and the photocatalytic component, a light reflecting coating is coated on the side, close to the photocatalytic component, of the flow equalizing plate, the tail filter screen, the photocatalytic component and the flow equalizing plate are coaxial, a sealing cover is installed at the top of the shell, the shell comprises an air outlet plate, the air outlet plate is located on the inner.
In one embodiment of the invention, the air inlet can be opened and closed, the sealing piece is arranged on the opening and closing edge, the size of the front filter screen is smaller than the opening and closing part of the air inlet, and the front filter screen is detached from the air inlet after the air inlet is opened.
In an embodiment of the invention, the casing further includes a base, the front filter screen, the photocatalytic assembly, the uniform flow plate and the tail end filter screen are mounted on the base, the height of the air outlet plate is equal to that of the tail end filter screen, and the air outlet plate is provided with a plurality of air outlet holes which are uniformly distributed.
In an embodiment of the invention, the air blower further comprises 2 parallel fixing frames, the light source is arranged between the two fixing frames, the fixing frames are respectively arranged on the base and the top of the shell, the air blower is arranged below the fixing frame at the lower end, the fixing frames are composed of a plurality of cross rods, the cross rods are distributed circumferentially, and the tail ends of the cross rods are connected and arranged at the shaft of the air duct.
In one embodiment of the invention, the photocatalytic assembly comprises a mesh and a structural support frame, wherein the mesh is coated with a photocatalyst, the mesh is pleated in a zigzag shape and forms a regular circular ring shape, the zigzag folds are uniformly distributed, so that the angular bisector of each fold always coincides with one diameter of the circular ring, the span of one fold is 2-8 cm, the height is 2-6 cm, the opening angle is 19-127 degrees, and the structural support frame is provided with 2 meshes and is arranged at the top and the bottom of the mesh.
In one embodiment of the invention, the joint of the sealing cover and the shell is sealed by a sealing element.
In one embodiment of the present invention, a control module is installed in the sealing cover, and the control module is electrically connected to the light source, the organic pollutant sensor and the solid particle pollutant sensor.
In an embodiment of the present invention, a control panel is installed on the outer side of the top of the sealing cover, and the control panel is connected with the control module.
In an embodiment of the invention, the end filter is a HEPA filter.
In an embodiment of the present invention, the bottom of the air inlet is provided with casters.
In one embodiment of the invention, the light source is an LED visible light source, and the distance between the light source and the photocatalytic component is 5-20 cm.
Compared with the prior art, the invention has the following beneficial effects:
1. by combining the photocatalytic decomposition purification technology and the mechanical filtration method, the organic pollutants and the solid particle pollutants can be treated efficiently at the same time. Compared with the common activated carbon adsorption technology, the photocatalytic decomposition and purification technology has the advantages of longer service life, lower replacement cost and less secondary pollutants;
2. the cylindrical photocatalytic component and the light source positioned in the middle of the cylindrical photocatalytic component are used for realizing symmetrical structure of the photocatalytic component, so that the photocatalytic net piece can uniformly receive illumination, the decomposition and purification effect is more stable, and the waste of light energy is reduced;
3. through the cylindrical photocatalytic component structure, the formed air duct is also cylindrical, and the problem that four corners of the square air duct are wasted due to cylindrical airflow caused by the fact that fan blades of an air blower are circular in the square air duct structure is solved; compared with a square air duct structure, the air flow distribution of the circular air duct is more uniform, and the utilization rate of the photocatalytic component decomposition and purification net piece and the subsequent tail end filter screen is improved;
4. the photocatalytic net piece is pleated in a zigzag manner, so that the surface area of the net piece in the same space is increased; the zigzag pleat is opened at a certain angle, so that each position of the pleated net sheet can receive a central light source, the utilization rate of the light source is improved, the number of required light sources is reduced, and the energy consumption is reduced;
5. through the cylindrical air channel structure and the air outlet plate arranged on the side surface of the shell, the flow direction of the gas is greatly changed, so that the flow velocity of the gas is reduced, the air to be treated stays in the photocatalytic assembly for a longer time, and the effect of decomposing and purifying organic pollutants is improved; meanwhile, the speed of air passing through the tail end filter screen is reduced, so that the effect of intercepting and filtering solid particle pollutants is improved.
Drawings
Fig. 1 is a schematic view of an embodiment of the present invention.
Fig. 2 is a sectional view a-a in fig. 1.
Fig. 3 is a schematic structural view of a photocatalytic module.
The device comprises a shell 1, a front filter screen 2, a blower 3, a light source 4, a photocatalytic assembly 5, a mesh 51, a structural support 52, a tail filter screen 6, an organic pollutant sensor 7, a solid pollutant sensor 8, a control module 9, a control panel 10, an air inlet 11, an air outlet plate 12, an air homogenizing plate 13, a sealing cover 14, a caster 15, an air duct 16, an air duct 17, a base and a fixing frame 18.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in the figure, the embodiment of the invention discloses a photocatalytic air purifier, which comprises a shell 1, a front filter screen 2, an air blower 3, a light source 4, a photocatalytic component 5 and a tail end filter screen 6, wherein the shell 1 is cylindrical or in other shapes, the bottom of the shell 1 is provided with an air inlet 11, the front filter screen 2 is arranged on the inner side of the air inlet 11, the air blower 3 is arranged above the front filter screen 2, the photocatalytic component 5 is hollow and cylindrical, the middle of the photocatalytic component 5 is provided with an air duct 16, the diameter of the air duct 16 is equal to that of an air outlet of the air blower 3, the light source 4 is vertically arranged in the middle of the air duct 16, the tail end filter screen 6 is arranged on the outer ring of the photocatalytic component 5, a flow equalizing plate 13 is arranged between the tail end filter screen 6 and the photocatalytic component 5, the side of the flow equalizing plate 13 close to the photocatalytic component 5 is coated, the top of the shell 1 is provided with a sealing cover 14, the shell 1 comprises an air outlet plate 12, the air outlet plate 12 is positioned at the inner ring of the tail end filter screen 6, and the inner side of the air outlet plate 12 is provided with an organic pollutant sensor 7 and a solid particle pollutant sensor 8.
The model number of the organic pollutant sensor is ZE08-CH2O, and the model number of the solid particle pollutant sensor is GP2Y1014 AU.
The air blower extracts air to be treated from the air inlet and inputs the air upwards into the air channel.
In the embodiment, the structure of the photocatalytic component is symmetrical through the cylindrical photocatalytic component and the light source positioned in the center of the photocatalytic component, so that the photocatalytic net piece can uniformly receive light, the decomposition and purification effect is more stable, and the waste of light energy is reduced;
in the embodiment, the formed air duct is also cylindrical through the cylindrical photocatalytic component structure, so that the problem of four corners waste of the square air duct caused by cylindrical airflow due to the fact that fan blades of the air blower are circular in the square air duct structure is solved; compared with a square air duct structure, the air flow distribution of the circular air duct is more uniform, and the utilization rate of the photocatalytic component decomposition and purification net piece and the subsequent tail end filter screen filtration is improved.
In an embodiment of the present invention, the air inlet 11 is openable, the sealing member is installed on the edge of the opening and closing, the size of the front filter screen 2 is smaller than the openable portion of the air inlet 11, and when the air inlet 11 is opened, the front filter screen 2 is detached from the air inlet 11. The openable design of the air inlet facilitates the replacement of the front filter screen.
In an embodiment of the present invention, the housing 1 further includes a base 17, the front filter 2, the photocatalytic assembly 5, the uniform flow plate 13 and the end filter 6 are mounted on the base 17, the height of the air outlet plate 12 is equal to the height of the end filter 6, and the air outlet plate 12 is provided with a plurality of air outlets uniformly distributed.
The holes of the air outlet plate are fine meshes, so that the air flow at the air outlet plate is uniform.
In an embodiment of the present invention, the air conditioner further includes 2 parallel fixing frames 18, the light source 4 is installed between the two fixing frames 18, the fixing frames 18 are respectively installed on the base 17 and the top of the housing 1, the blower is installed below the fixing frame at the lower end, the fixing frames 18 are composed of a plurality of cross bars, the cross bars are circumferentially distributed, and the ends of the cross bars are connected and arranged at the axis of the air duct 16.
In one embodiment of the present invention, the photocatalytic assembly 5 comprises a mesh 51 and a structural support 52, the mesh 51 is coated with a photocatalyst, the mesh 51 is pleated in a zigzag shape to form a regular circular ring, the zigzag-shaped pleats are uniformly distributed, so that the bisector of each pleat always coincides with one diameter of the circular ring, the span of one pleat is 2-8 cm, the height is 2-6 cm, the opening angle is 19-127 °, and the structural support 52 is provided with 2 pleats and is arranged at the top and the bottom of the mesh.
The structural support 52 is a ring, and the top and bottom of the mesh are fixed to the ring.
In an embodiment of the present invention, the connection between the sealing cover 14 and the housing 1 is sealed by a sealing member. The air inlet duct 16 is ensured to be exhausted from the air outlet plate 12 only after passing through the photocatalytic component 5 and the end filter screen 6 under the condition that the sealing cover 14 is tightly closed.
In one embodiment of the present invention, a control module 9 is installed in the sealing cover 14, and the control module 9 is electrically connected to the light source 4, the organic contaminant sensor 7 and the solid particulate contaminant sensor 8.
The control module 9 regulates the power of the light source and/or blower to the function of regulating air remediation efficiency and/or speed.
In an embodiment of the present invention, a control panel 10 is installed on the top outer side of the sealing cover 14, and the control panel 10 is connected with the control module.
The organic contaminant sensor 7 and the solid particulate contaminant sensor 8 detect the air quality and are displayed on the control panel.
The terminal filter screen is the HEPA filter screen.
In one embodiment of the present invention, the bottom of the air inlet is provided with casters 15.
The truckle is convenient for transport and transportation.
In an embodiment of the present invention, the light source 4 is an LED visible light source, and the distance between the light source 4 and the photocatalytic component 5 is 5-20 cm.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and the like that are within the spirit and principle of the present invention are included in the present invention.

Claims (10)

1. A photocatalytic air purifier is characterized by comprising a shell, a front filter screen, a blower and a light source, the air inlet is installed at the bottom of the shell, the front filter screen is installed on the inner side of the air inlet, the air blower is installed above the front filter screen, the photocatalytic component is hollow and cylindrical, an air channel is formed in the middle of the photocatalytic component, the diameter of the air channel is equal to that of an air outlet of the air blower, the light source is vertically installed in the middle of the air channel, the tail filter screen is installed on the outer ring of the photocatalytic component, a flow equalizing plate is arranged between the tail filter screen and the photocatalytic component, a light reflecting coating is coated on the side, close to the photocatalytic component, of the flow equalizing plate, the tail filter screen, the photocatalytic component and the flow equalizing plate are coaxial, a sealing cover is installed at the top of the shell, the shell comprises an air outlet plate, the air outlet plate is located on the inner.
2. The photocatalytic air cleaner of claim 1, wherein the inlet opening is openable, the sealing member is installed at an edge of the opening, the size of the pre-filter is smaller than that of the openable portion of the inlet opening, and the pre-filter is detached from the inlet opening when the inlet opening is opened.
3. The photocatalytic air purifier as recited in claim 1, wherein the housing further comprises a base, the pre-filter, the photocatalytic assembly, the uniform flow plate and the end filter are mounted on the base, the outlet plate has a height equal to that of the end filter, and the outlet plate has a plurality of uniformly distributed outlet holes.
4. The photocatalytic air purifier of claim 3, further comprising 2 parallel fixing frames, wherein the light source is installed between the two fixing frames, the fixing frames are respectively installed on the base and the top of the housing, the blower is installed below the fixing frame at the lower end, the fixing frames are composed of a plurality of cross rods which are circumferentially distributed, and the ends of the cross rods are connected and arranged at the axis of the air duct.
5. A photocatalytic air cleaner as set forth in claim 1, characterized in that the photocatalytic module comprises a mesh coated with photocatalyst and a structural support frame, the mesh being pleated in zigzag form to define a perfect circle, the zigzag pleats being uniformly distributed so that the angular bisector of each pleat always coincides with a diameter of the circle, one pleat having a span of 2-8 cm and a height of 2-6 cm and being opened at an angle of 19 ° -127 °, and 2 structural support frames being provided and being installed at the top and bottom of the mesh.
6. A photocatalytic air cleaner as set forth in claim 1, wherein the joint of the sealing cover and the housing is sealed by a sealing member.
7. A photocatalytic air cleaner as recited in claim 1, wherein the sealing cover has a control module mounted therein, the control module being electrically connected to the light source, the organic contaminant sensor and the solid particulate contaminant sensor.
8. A photocatalytic air cleaner as set forth in claim 7, wherein the control panel is installed on the outside of the top of the sealing cover, and the control panel is connected to the control module.
9. The photocatalytic air cleaner of claim 1, wherein the bottom of the air inlet is provided with casters.
10. The photocatalytic air purifier of claim 1, wherein the light source is an LED visible light source, and the light source is spaced from the photocatalytic assembly by 5-20 cm.
CN201911151567.8A 2019-11-21 2019-11-21 Photocatalytic air purifier Pending CN110743360A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911151567.8A CN110743360A (en) 2019-11-21 2019-11-21 Photocatalytic air purifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911151567.8A CN110743360A (en) 2019-11-21 2019-11-21 Photocatalytic air purifier

Publications (1)

Publication Number Publication Date
CN110743360A true CN110743360A (en) 2020-02-04

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114506082A (en) * 2022-01-26 2022-05-17 嘉兴数字三维智能制造研究院有限公司 3D prints and uses wind field system
CN114891986A (en) * 2022-05-20 2022-08-12 佛山市百燊工业科技有限公司 Aging furnace

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114506082A (en) * 2022-01-26 2022-05-17 嘉兴数字三维智能制造研究院有限公司 3D prints and uses wind field system
CN114891986A (en) * 2022-05-20 2022-08-12 佛山市百燊工业科技有限公司 Aging furnace
CN114891986B (en) * 2022-05-20 2024-06-11 佛山市百燊工业科技有限公司 Aging furnace

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Inventor after: Wang Yuhua

Inventor after: Song Weiguang

Inventor after: Hu Chuanjia

Inventor after: Wang Ping

Inventor after: Zhang Jiajia

Inventor after: Wang Xianying

Inventor after: Zhou Jiade

Inventor after: Wang Kang

Inventor after: Wang Keqin

Inventor after: Ge Yunfei

Inventor after: Wang Longsheng

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