CN210079256U - Integrated waste gas treatment equipment - Google Patents
Integrated waste gas treatment equipment Download PDFInfo
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- CN210079256U CN210079256U CN201920691544.5U CN201920691544U CN210079256U CN 210079256 U CN210079256 U CN 210079256U CN 201920691544 U CN201920691544 U CN 201920691544U CN 210079256 U CN210079256 U CN 210079256U
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Abstract
The utility model discloses an integrated form exhaust-gas treatment equipment, including the equipment main frame, set up air inlet and gas outlet in the relative both sides of equipment main frame, the equipment main frame includes LEP lighting fixture subassembly, microwave source subassembly, fan subassembly and gives integrated form exhaust-gas treatment equipment provides the automatically controlled subassembly of electric power. The microwave source assembly comprises a microwave power supply and an LEP microwave assembly which are fixedly arranged on the shell of the main frame of the equipment. The LEP lamp holder assembly is fixedly arranged in the equipment main frame shell, and microwaves generated by the microwave source assembly are transmitted into the LEP lamp holder assembly through the waveguide window. The fan assembly includes a centrifugal fan. The utility model discloses integrated microwave, ultraviolet ray and the multiple exhaust purification mode of plasma photocatalysis, purification efficiency is high, and the transportation of integrated form equipment is convenient, can realize nimble module installation, and exhaust-gas treatment application scope is wide.
Description
Technical Field
The utility model relates to a waste gas treatment equipment field especially relates to an integrated form exhaust-gas treatment equipment.
Background
Since the last 40 years, with the rapid development of the manufacturing of the Chinese industry, a great deal of air pollutant emission is brought about. So far, most production equipment in the industries of printing, spraying, machining and the like in China basically does not collect and treat waste gas, and the national technical standard for treating the waste gas generated in production by adopting any method does not exist, so that the concentration of harmful waste gas in a production workshop is high, the body health of workers is influenced, and a large amount of waste gas pollutants are directly discharged to form haze in the atmosphere, so that the problem of waste gas treatment is very urgent.
The existing waste gas treatment technology mainly comprises the following steps: adsorption absorption, catalytic oxidation, biological treatment, and the like. The adsorption and absorption method is to utilize an adsorption absorbent with adsorption or absorption capacity to absorb toxic and harmful substances in the transferred waste gas, and the method is simple and easy to implement, but the consumption of the adsorbent is large and difficult to recycle, a large amount of industrial solid wastes can be generated in the later period, the treatment cost is increased, and the potential hazard of secondary release of pollutants exists. The catalytic oxidation method is to make organic waste gas undergo oxidation reaction under the action of oxidation catalyst and completely degrade the organic waste gas into inorganic micromolecules such as carbon dioxide, water and the like, but the treatment efficiency is lower because most of the organic waste gas with large air volume and low concentration is discharged in the production process. The biological treatment method is a new technology, and the reactor involves gas, liquid and solid mass transfer and biochemical degradation processes, so the influence factors are many and the control is difficult.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide an integrated form exhaust-gas treatment equipment, the waste gas that this equipment can effectively collect production facility production is and concentrate the emission after handling in addition, reaches the purpose that subducts exhaust pollutant in a large number, maintains ecological environment and guarantee that the workman is healthy.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides an integrated form exhaust-gas treatment equipment, includes the equipment main frame, sets up air inlet and gas outlet in the relative both sides of equipment main frame, the equipment main frame includes LEP lighting fixture subassembly, microwave source subassembly, fan subassembly and gives integrated form exhaust-gas treatment equipment provides the automatically controlled subassembly of electric power.
The LEP lamp holder assembly is arranged in the equipment main frame shell and is positioned on the air inlet side.
The microwave source subassembly sets up the casing outside of equipment main frame, the microwave source subassembly includes fixed mounting microwave power supply and LEP microwave subassembly on the casing of equipment main frame, the microwave power supply is connected with LEP microwave subassembly electricity, LEP microwave subassembly with LEP lighting fixture subassembly communicates with each other through setting up waveguide window on the casing of equipment main frame.
The fan assembly is arranged in the equipment main frame shell and positioned on the air outlet side, and the fan assembly comprises a centrifugal fan.
Adopt above-mentioned technical scheme, through setting up LEP lighting fixture subassembly and microwave source subassembly, the microwave source arouses LEP lighting fixture subassembly to produce ultraviolet ray and plasma light, and the pollutant in the waste gas is in LEP lighting fixture subassembly, under microwave, ultraviolet ray and plasma photocatalysis combined action, is discharged from the gas outlet after being degraded into inorganic micromolecules such as carbon dioxide and water fast. And a centrifugal fan is arranged on the side of the air outlet to provide power for the circulation of waste gas. In addition, the electric control assembly is arranged to supply power to the whole equipment.
As a further aspect of the present invention: the electric control assembly is arranged in the shell of the equipment main frame and comprises a power distribution cabinet, wherein a main power switch, a centrifugal fan switch and a microwave power switch are arranged in the power distribution cabinet.
The main power switch is electrically connected with a switch of the centrifugal fan and a switch of the microwave power supply, the centrifugal fan is electrically connected with the switch of the centrifugal fan, and the microwave power supply is electrically connected with the switch of the microwave power supply.
Adopt above-mentioned technical scheme, through setting up automatically controlled subassembly, including the switch board, set up total switch, centrifugal fan's switch and microwave power supply's switch in the switch board, the switch board carries out distribution and control to the power consumption part, and when overload, short circuit or electric leakage appear in the circuit, the switch board can provide power-off protection, has further guaranteed the utility model discloses the normal work of equipment.
As a further aspect of the present invention: the LEP microwave component comprises a magnetron and a waveguide, the magnetron is electrically connected with a microwave power supply, and the waveguide is communicated with the waveguide window.
By adopting the technical scheme, the microwave power supply is connected with the magnetron to generate microwaves, the microwaves are transmitted to the waveguide window on the shell of the main frame of the equipment through the waveguide, and finally the microwaves are transmitted to the LEP lamp holder component through the waveguide window.
As a further aspect of the present invention: the LEP microwave assembly further comprises a cooling kit, wherein the cooling kit comprises a fan and a radiating fin, and the radiating fin is attached to the magnetron.
By adopting the technical scheme, the cooling sleeve dissipates heat of the magnetron, the heat generated in the working process of the magnetron is guided out to the heat dissipation fins through the heat dissipation fins and the magnetron in a laminating mode, then the heat dissipation fins are dissipated through the fan, and equipment damage caused by overhigh temperature in the working process of the magnetron is avoided.
As a further aspect of the present invention: and a protective panel is arranged on the outer side of the microwave source assembly, and rain-proof heat dissipation structures are arranged around the protective panel.
By adopting the technical scheme, the protection panel is arranged on the outer side of the microwave source assembly, so that the mechanical damage to the microwave source in the use process of the equipment is avoided. In addition, set up rain-proof heat radiation structure around the protection panel, protect the microwave source on the one hand and avoid receiving the destruction of rainwater, on the other hand avoids the harm that the high temperature that produces caused equipment in the LEP microwave subassembly working process.
As a further aspect of the present invention: the LEP lamp holder assembly comprises a support and an electrodeless ultraviolet lamp tube which is perpendicular to the direction of a gas passage, and the electrodeless ultraviolet lamp tube is fixedly arranged on the support.
By adopting the technical scheme, the microwave is transmitted into the main frame shell of the equipment, and the electrodeless ultraviolet lamp tube is excited by the microwave to generate ultraviolet rays and plasma light, so that the effect of catalytically degrading pollutants in the waste gas is achieved. In addition, the electrodeless ultraviolet lamp tube is fixedly arranged on the bracket, and when the equipment moves, the electrodeless ultraviolet lamp tube is prevented from being damaged by collision. The electrodeless ultraviolet lamp tube is arranged to be vertical to the direction of the gas passage, so that the catalytic degradation efficiency of pollutants in the waste gas is further improved.
As a further aspect of the present invention: an overhaul panel is arranged on the position, relative to the LEP lamp holder assembly, of the equipment main frame shell, and the overhaul panel is movably connected to the equipment main frame.
By adopting the technical scheme, the maintenance panel is arranged on the equipment main frame shell, so that the maintenance panel is convenient for workers to move away when the LEP lamp holder assembly in the equipment breaks down, and the maintenance is carried out.
As a further aspect of the present invention: the material of the bracket is selected from one of glass, plastic or ceramic.
By adopting the technical scheme, the bracket uses the glass, plastic or ceramic material which is not absorbed and penetrates through the microwave, so that the microwave generated by the microwave source is not absorbed in an ineffective way in the LEP lamp holder assembly, and the microwave plays the greatest role.
As a further aspect of the present invention: the fan assembly further comprises a variable frequency controller electrically connected with the centrifugal fan.
By adopting the technical scheme, the working power of the centrifugal fan can be adjusted by arranging the variable frequency controller, and the speed of the waste gas flowing from the equipment is controlled.
As a further aspect of the present invention: the bottom of the main frame of the equipment is provided with a sliding component.
By adopting the technical scheme, the sliding component is arranged at the bottom of the main frame of the equipment, so that the equipment is convenient to carry and move, the waste gas in each area is treated by the equipment, and the operation is flexible.
The utility model has the advantages that: under centrifugal fan's power, waste gas gets into LEP lighting fixture subassembly from the air inlet of equipment main frame, and the pollutant in the waste gas is through microwave, ultraviolet and plasma photocatalytic oxidation, is degraded into inorganic micromolecule such as carbon dioxide, water fast, and the waste gas after the purification is concentrated through centrifugal fan's gas outlet and is discharged.
The utility model discloses integrated microwave, ultraviolet and the multiple exhaust purification mode of plasma photocatalytic oxidation, purification efficiency is high, and the transportation of integrated form equipment is convenient, can realize nimble module installation, and exhaust-gas treatment application scope is wide.
Drawings
Fig. 1 is an exploded schematic view of an integrated exhaust gas treatment device according to an embodiment of the present invention;
fig. 2 is a front view of an integrated exhaust gas treatment device according to an embodiment of the present invention;
fig. 3 is a top view of an integrated exhaust treatment device according to an embodiment of the present invention;
fig. 4 is a left side view of an integrated exhaust treatment device according to an embodiment of the present invention;
fig. 5 is a right side view of an integrated exhaust treatment device according to an embodiment of the present invention;
in the figure: 1-a protective panel; 2-a microwave power supply; 3-the equipment main frame; 4-centrifugal fan; 5-a sliding member; 6-an electronic control component; 7-maintenance panel; 8-LEP lamp holder assembly; 9-LEP microwave assembly; 10-an air inlet; 11-gas outlet; 12-a waveguide window; 13-electrodeless ultraviolet lamp tube; 14-bracket.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
In the present invention, the directions of up, down, left and right in the drawings are regarded as up, down, left and right of the integrated exhaust gas treatment device described in the present specification.
The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.
Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.
Referring to fig. 1, 2, 3, 4 and 5, an integrated exhaust gas treatment device includes a device main frame 3, an air inlet 10 and an air outlet 11 disposed at opposite sides of the device main frame 3, and the device main frame 3 includes an LEP lamp holder assembly 8, a microwave source assembly, a fan assembly, and an electronic control assembly 6 for supplying power to the integrated exhaust gas treatment device. The main frame 3 of the equipment is of a box structure, and is made of metal materials such as stainless steel and the like, and boxes with different sizes are manufactured according to the requirement of waste gas treatment.
The microwave source assembly is arranged outside the casing of the main frame 3 of the equipment, the microwave source assembly comprises a microwave power supply 2 and an LEP microwave assembly 9 which are fixedly installed on the casing of the main frame 3 of the equipment, and the microwave power supply 2 is electrically connected with the LEP microwave assembly 9. In order to avoid the collision damage to the microwave source assembly in the use process of the equipment, a protective panel 1 is arranged on the outer side of the microwave source assembly, and in addition, in order to avoid the damage to the equipment caused by the heat generated by the LEP microwave assembly 9 in the working process, a rainproof heat dissipation structure is arranged around the protective panel 1. The preferred microwave source assembly is arranged at the top outside the casing of the equipment main frame 3, the protective panel 1 is arranged on the microwave source assembly, and the periphery of the protective panel 1 is wrapped by materials with good waterproof and heat dissipation effects in the prior art. The LEP microwave assembly 9 includes a magnetron electrically connected to the microwave power supply 2 and a waveguide communicating with a waveguide window 12 provided on the casing of the main frame 3 of the apparatus. The microwave power supply 2 is connected with the magnetron to generate microwave, the microwave is transmitted to the waveguide window 12 through the waveguide and finally transmitted to the LEP lamp holder assembly 8 in the casing of the main frame 3 of the equipment. In order to avoid the too high damage to the magnetron of magnetron operating temperature, the utility model discloses still set up the cooling external member, the cooling external member includes fan and fin, and the fin sets up with the magnetron laminating, derives the heat of magnetron to the fin on, opens the fan and dispels the heat to the fin. Wherein, the power of the magnetron is 100kw, 30kw, 15kw, 10kw, 1.5kw, 1kw, 900w, 700w, 300w, the frequency is 2.4GHz, and the number of magnetrons is 1-200. The user can select different numbers of magnetrons according to the concentration of pollutants in the waste gas, thereby achieving the effect of controlling and adjusting the microwave intensity. The waveguide is made of metal materials such as copper, iron, aluminum alloy, stainless steel and the like, and the cross section of the waveguide is rectangular.
The LEP lamp holder assembly 8 is disposed within the apparatus main frame 3 housing on the air inlet 10 side. The LEP lamp holder assembly 8 comprises a support 14 and an electrodeless ultraviolet lamp tube 13, and in order to increase the contact of pollutants in the waste gas with the electrodeless ultraviolet lamp tube 13, the electrodeless ultraviolet lamp tube 13 is fixedly arranged on the support 14 in a mode of being vertical to the passage direction of the gas. In addition, in order to facilitate maintenance and overhaul of the LEP lamp holder assembly 8 by workers, an overhaul panel 7 is arranged on the casing of the main equipment frame 3 at a position relative to the LEP lamp holder assembly 8, the overhaul panel 7 is movably connected to the main equipment frame 3, and the movable connection mode is preferably hinged. The holder 14 is made of a non-absorptive and microwave-transparent material, and may be made of one of glass, plastic, or ceramic, so as to prevent the microwave from being inefficiently absorbed in the LEP lamp holder assembly 8, and maximize the microwave effect. The electrodeless ultraviolet lamp tube 13 is selected from a low-pressure mercury lamp, a low-pressure bromine lamp or a low-pressure iodine lamp, and the lamp tube material can be selected from quartz with the purity of more than 99.99%, fluoride (barium fluoride, calcium fluoride, lithium fluoride and the like), UBK7 glass, sapphire, borosilicate glass, ultraviolet-transmitting glass and the like. 13 electrodeless ultraviolet tubes with the number of 1-300 have the length of 30-300cm and the diameter of 1-10 cm. A user can set different specifications of the electrodeless ultraviolet lamp tube 13 according to the concentration of pollutants in the waste gas, and ultraviolet rays with different intensities can be generated under the excitation of microwaves, so that the waste gas containing pollutants with different concentrations is catalytically degraded.
The fan subassembly sets up in 3 casings on the equipment main frame, is located gas outlet 11 side, and fixed mounting has the centrifugal fan 4 that provides power for waste gas in the fan subassembly. In order to reach the purpose of controlling 4 operating power of centrifugal fan, the utility model discloses still be provided with the variable frequency controller who is connected with 4 electricity of centrifugal fan, the staff can be through adjusting variable frequency controller and then adjusting 4 operating power of centrifugal fan, reaches the speed of circulation in the control waste gas slave unit.
The electric control assembly 6 is arranged in the shell of the main frame 3 of the equipment, the electric control assembly 6 comprises a power distribution cabinet, and a main power switch, a switch of the centrifugal fan 4 and a switch of the microwave power supply 2 are arranged in the power distribution cabinet. The main power switch is electrically connected with a switch of the centrifugal fan 4 and a switch of the microwave power supply 2, the centrifugal fan 4 is electrically connected with the switch of the centrifugal fan 4, and the microwave power supply 2 is electrically connected with the switch of the microwave power supply 2. The switch board carries out distribution and control to the power consumption part, and when the circuit overload appears, short circuit or electric leakage, the switch board can provide power-off protection, has guaranteed the utility model discloses the normal work of equipment.
In addition, in order to facilitate the carrying and moving of the equipment, the utility model discloses be provided with slide part 5 in the bottom of equipment main frame 3, slide part 5 is preferably the universal wheel. The purification of waste gas in each area is processed by utilizing equipment, and the operation is flexible.
The working principle of the utility model is as follows: the utility model discloses a set up microwave source subassembly and LEP lighting fixture subassembly 8, microwave source power 2 connects the magnetron and produces the microwave, transmits waveguide window 12 on the casing of equipment main frame 3 through the waveguide, finally transmits the microwave to LEP lighting fixture subassembly 8 in through waveguide window 12, arouses LEP lighting fixture subassembly 8 to produce ultraviolet ray and plasma light. Waste gas enters the LEP lamp holder assembly 8 from the air inlet 10 of the main frame 3 of the equipment under the power of the centrifugal fan 4, pollutants in the waste gas are rapidly degraded into inorganic micromolecules such as carbon dioxide, water and the like in the LEP lamp holder assembly 8 under the catalytic oxidation action of microwave, ultraviolet rays and plasma light, and the purified waste gas is intensively discharged through the air outlet 11 of the centrifugal fan 4.
Example 2:
in this embodiment, the main frame 3 of the apparatus is made of 304 stainless steel materials to form a box structure, the magnetron is a samsung air-cooled magnetron OM75P (31), the power is 1kw, the frequency is 2.4GHz, and the number of magnetrons is 100. The waveguide is made of aluminum alloy, the cross section of the waveguide is rectangular, and the microwave power supply 2 is a YB-MP1000 type 1000W magnetron power supply of the Xian-factor variable photoelectric technology limited company. The LEP lamp holder assembly 8 comprises a support 14 and electrodeless ultraviolet lamps 13, wherein the support 14 is made of polytetrafluoroethylene plastics, the electrodeless ultraviolet lamps 13 are low-pressure mercury lamps, the lamps are made of high-purity quartz, the purity of the high-purity quartz is greater than 99.99%, the number of the lamps is 100, the length of each lamp is 80cm, and the diameter of each lamp is 5 cm.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (10)
1. An integrated waste gas treatment equipment, includes equipment main frame (3), sets up air inlet (10) and gas outlet (11) in the opposite sides of equipment main frame (3), its characterized in that: the equipment main frame (3) comprises an LEP lamp holder assembly (8), a microwave source assembly, a fan assembly and an electric control assembly (6) for providing electric power for the integrated waste gas treatment equipment;
the LEP lamp holder assembly (8) is fixedly arranged in the shell of the main frame (3) of the equipment and is positioned at the side of the air inlet (10);
the microwave source assembly is arranged outside the shell of the main equipment frame (3), the microwave source assembly comprises a microwave power supply (2) and an LEP microwave assembly (9), the microwave power supply (2) is fixedly mounted on the shell of the main equipment frame (3), the LEP microwave assembly (9) is electrically connected with the LEP microwave assembly (2), and the LEP microwave assembly (9) is communicated with the LEP lamp holder assembly (8) through a waveguide window (12) arranged on the shell of the main equipment frame (3);
the fan assembly is arranged in the shell of the main frame (3) of the equipment and positioned at the side of the air outlet (11), and the fan assembly comprises a centrifugal fan (4).
2. The integrated exhaust treatment device of claim 1, wherein: the electric control assembly (6) is arranged in a shell of the equipment main frame (3), the electric control assembly (6) comprises a power distribution cabinet, and a main power switch, a switch of the centrifugal fan (4) and a switch of the microwave power supply (2) are arranged in the power distribution cabinet;
the main power switch is electrically connected with a switch of the centrifugal fan (4) and a switch of the microwave power supply (2), the centrifugal fan (4) is electrically connected with the switch of the centrifugal fan (4), and the microwave power supply (2) is electrically connected with the switch of the microwave power supply (2).
3. The integrated exhaust treatment device of claim 1, wherein: the LEP microwave component (9) comprises a magnetron and a waveguide, the magnetron is electrically connected with a microwave power supply (2), and the waveguide is communicated with the waveguide window (12).
4. The integrated exhaust treatment device of claim 3, wherein: LEP microwave subassembly (9) still include the cooling external member, the cooling external member includes fan and fin, the fin sets up with the magnetron laminating.
5. The integrated exhaust treatment device of claim 1, wherein: the outer side of the microwave source component is provided with a protective panel (1), and the periphery of the protective panel (1) is provided with a rainproof heat dissipation structure.
6. The integrated exhaust treatment device of claim 1, wherein: the LEP lamp holder assembly (8) comprises a support (14) and an electrodeless ultraviolet lamp tube (13) which is perpendicular to the direction of a gas passage, wherein the electrodeless ultraviolet lamp tube (13) is fixedly arranged on the support (14).
7. The integrated exhaust treatment device of claim 1, wherein: an overhaul panel (7) is arranged on the shell of the main equipment frame (3) in a position relative to the LEP lamp holder assembly (8), and the overhaul panel (7) is movably connected to the main equipment frame (3).
8. The integrated exhaust treatment device of claim 6, wherein: the material of the bracket (14) is selected from one of glass, plastic or ceramic.
9. The integrated exhaust treatment device of claim 1, wherein: the fan assembly further comprises a variable frequency controller electrically connected with the centrifugal fan (4).
10. The integrated exhaust treatment device of claim 1, wherein: the bottom of the equipment main frame (3) is provided with a sliding component (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920691544.5U CN210079256U (en) | 2019-05-14 | 2019-05-14 | Integrated waste gas treatment equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920691544.5U CN210079256U (en) | 2019-05-14 | 2019-05-14 | Integrated waste gas treatment equipment |
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| CN210079256U true CN210079256U (en) | 2020-02-18 |
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| CN201920691544.5U Active CN210079256U (en) | 2019-05-14 | 2019-05-14 | Integrated waste gas treatment equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113757888A (en) * | 2021-09-26 | 2021-12-07 | 中国科学院长春光学精密机械与物理研究所 | Air purifier |
| WO2022016565A1 (en) * | 2020-07-23 | 2022-01-27 | 江苏万贤环境工程有限公司 | Microwave electrodeless discharging ultraviolet exhaust gas treatment device |
| CN114326451A (en) * | 2020-09-29 | 2022-04-12 | 陕西青朗万城环保科技有限公司 | Online monitoring system of waste gas treatment equipment and device thereof |
-
2019
- 2019-05-14 CN CN201920691544.5U patent/CN210079256U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022016565A1 (en) * | 2020-07-23 | 2022-01-27 | 江苏万贤环境工程有限公司 | Microwave electrodeless discharging ultraviolet exhaust gas treatment device |
| CN114326451A (en) * | 2020-09-29 | 2022-04-12 | 陕西青朗万城环保科技有限公司 | Online monitoring system of waste gas treatment equipment and device thereof |
| CN113757888A (en) * | 2021-09-26 | 2021-12-07 | 中国科学院长春光学精密机械与物理研究所 | Air purifier |
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