CN110906446A - Integrated air conditioning device with functions of filtering and capturing indoor carbon dioxide - Google Patents
Integrated air conditioning device with functions of filtering and capturing indoor carbon dioxide Download PDFInfo
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- CN110906446A CN110906446A CN201911188364.6A CN201911188364A CN110906446A CN 110906446 A CN110906446 A CN 110906446A CN 201911188364 A CN201911188364 A CN 201911188364A CN 110906446 A CN110906446 A CN 110906446A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
- F24F1/0014—Indoor units, e.g. fan coil units characterised by air outlets having two or more outlet openings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
- F24F1/0073—Indoor units, e.g. fan coil units with means for purifying supplied air characterised by the mounting or arrangement of filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0087—Indoor units, e.g. fan coil units with humidification means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/20—Casings or covers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/50—Air quality properties
- F24F2110/65—Concentration of specific substances or contaminants
- F24F2110/70—Carbon dioxide
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Separation Of Gases By Adsorption (AREA)
Abstract
The invention provides an integrated air conditioning device with functions of filtering and capturing indoor carbon dioxide, which comprises a shell, wherein the shell internally comprises a first cavity and a second cavity which are mutually independent, and the shell is provided with a first air inlet and a first air outlet which are communicated with the first cavity, and a second air inlet and a second air outlet which are communicated with the second cavity; the first cavityAnd the inside of the second cavity comprises a filter net film rotating frame on which two groups of wet process regeneration CO are arranged2The filter net membrane comprises a first cavity, a second cavity and a filter net membrane, wherein one group of filter net membranes are positioned in the first cavity, the other group of filter net membranes are positioned in the second cavity, and the second cavity further comprises an atomizing device and a water collector. The device can realize the indoor CO control2Uninterrupted filtration and removal of CO by wet regeneration2The filter screen membrane material is cheap, environmental protection, the device carries out the small-scale repacking on the original basis of air conditioner can, the air intake sharing of first air intake and air conditioner can not additionally increase the air conditioner energy consumption and can realize CO2The filtering is economical and applicable, and can be adapted to various types of air conditioners in the existing market.
Description
Technical Field
The invention relates to the field of air purification of air conditioners, in particular to an integrated air conditioning device with functions of filtering and capturing indoor carbon dioxide.
Background
With the development of current scientific technology and the improvement of the living standard of people, the requirements of people on living environment are higher and higher, and the application of air-conditioning systems in buildings is wider and wider. Because of the requirement of energy conservation, the doors and windows of a room using an air conditioner are often tightly closed, and the breathing of indoor personnel can cause CO2The concentration rises in a rapid accumulation manner when the indoor CO2When the accumulated concentration exceeds the standard, indoor personnel can have many diseases related to the air conditioner, such as closed building syndrome, sick building syndrome and the like, wherein the diseases are headache, dyspnea, fatigue and the like. In a non-ventilated air-conditioned room, to CO2Is cleaned to remove indoor CO2The concentration is controlled below a certain level, which is beneficial to creating good indoor air quality and is an important problem concerning the health of indoor personnel.
The existing air-conditioning air purification equipment has a mature method for purifying particle pollutants, but can be used for purifying gaseous pollutants, particularly CO2Practical and efficient purification means are also lacking.
In addition, as the greenhouse effect is increased, how to control the reaction with CO2The emission of predominant greenhouse gases has attracted widespread worldwide attention. Working in opposite directionsHigh concentration of CO produced in industrial processes2Has been relatively mature, but moves the CO emitted by mobile and small sources worldwide2Accounts for 30-50% of the total emission, and at present, people gradually pay attention to CO emitted by mobile emission sources and small-sized emission sources in production and life2The problem of trapping. Air conditioners are widely applied all over the world, and are used for capturing CO in indoor air2And the carbon dioxide is converted into storable synthetic fuel or other products, so that the large-scale negative carbon emission effect can be realized, and the carbon dioxide has great significance for energy conservation, emission reduction, greenhouse effect control and low carbon and environmental protection.
Disclosure of Invention
In view of the above, the present invention provides an integrated air conditioning apparatus with the functions of filtering and capturing indoor carbon dioxide, which can realize the indoor CO removal2The continuous removal is carried out so as to control it below a certain concentration, and more importantly, the device can even remove indoor CO2Controlling CO in outdoor air2The concentration level is lower, which is beneficial to creating good indoor air quality.
In order to achieve the purpose, the invention adopts the following technical scheme:
an integrated air conditioning device with functions of filtering and capturing indoor carbon dioxide comprises a shell 1, a partition plate 9 arranged on the shell 1, and a first cavity 6 and a second cavity 7 which are separated from each other by the partition plate 9; the shell 1 is provided with a first air inlet 2 and a first air outlet 4 which are communicated with a first cavity 6, a second air inlet 3 and a second air outlet 5 which are communicated with a second cavity 7, and an atomizing device 11 and a water collector 12 which are communicated with the second cavity 7;
a filter net film rotating frame 8 in an integrated structure is arranged in the first cavity 6 and the second cavity 7;
two groups of wet-process regenerated CO are contained in the filter net film rotating frame 82 Filter net film 13, a group of wet process regenerated CO2The filter net membrane is positioned in the first cavity 6, and the other group of wet-process regenerated CO2The filter net membrane is positioned in the second cavity 7;
the partition board 9 is connected with a rotary driving device 10 outside the shell 1, the partition board 9 is turned over by controlling the rotary driving device 10, the filter net film rotating frame 8 is driven to turn over, and therefore two groups of wet-process regenerated CO on the filter net film rotating frame 82The filter mesh membranes 13 are alternately arranged inside the first cavity 6 and the second cavity 7; wet regenerated CO inside the first chamber 62The filter net film 13 adsorbs CO2Wet regenerated CO inside the second chamber 72The filter net film 13 desorbs CO under the action of atomized water vapor2(ii) a Thus, both adsorption and desorption are carried out without interruption.
The first air inlet 2 is arranged at one side of the first cavity 6 and is shared with an air inlet of an air conditioner to suck indoor air, the first air outlet 4 is arranged at the other side of the first cavity 6, and CO is regenerated from the air sucked indoors through a wet method in the filter net film rotating frame 82After filtering the net film, the net film is discharged from the first air outlet 4 and then discharged into a room after passing through a cooling system of an air conditioner.
The second air inlet 3 is arranged on one side of the second cavity 7, the second air inlet 3 is connected to the outside, outdoor air is introduced during working, the second air outlet 5 is arranged on the other side of the second cavity 7, and the air in the second cavity 7 is discharged to the outside through the second air outlet 5.
The wet method for regenerating CO2The filter net film 13 is loaded with CO3 2-The anion exchange resin membrane or the anion exchange resin particle is CO based on humidity control2The cyclic adsorption/desorption material, anion exchange resin membrane or anion exchange resin particles can automatically adsorb CO in dry environment2After adsorption saturation, the catalyst can automatically desorb CO in a humid environment2。
The anion exchange resin membrane or the anion exchange resin particles can be placed in various ways according to the sizes of indoor spaces and air conditioner internal spaces, and can be set in different shapes.
The atomization device 11 atomizes the water condensed by the air conditioner into the second cavity 7 to wet the wet-process regenerated CO in the second cavity 72Filtering the mesh 13, thereby allowing wet regeneration of CO2Regeneration of the filter screen 13, CO2Is released out; the water collector 12 collects water in the second cavity 7, and the recovered water is sent back to the atomization device 11 for recycling through a pipeline.
The partition plate 9 further comprises sealing pieces arranged on two sides of the partition plate 9, so that the first cavity 6 and the second cavity 7 are mutually independent through the partition plate 9, and the sealing performance is good.
After uninterrupted continuous adsorption-desorption cycle, indoor CO is separated2The concentration is controlled below a preset level and even lower than that of CO in outdoor air2The concentration of (c).
An air conditioner comprises an air conditioner indoor unit 14, wherein the air conditioner indoor unit 14 comprises the integrated air conditioner device, and the integrated air conditioner device is arranged between an air inlet and an evaporator of the air conditioner indoor unit 14.
Compared with the prior art, the invention has the beneficial effects that:
1. the wet method of the invention is used for regenerating CO2The filter net film can be applied to CO in indoor air of an air conditioner2High efficiency, rapid filtration and capture, and reduction of indoor CO2Concentration, adsorption of CO2The saturated material can realize the recycling of the material by a humidifying mode (such as atomization and humidification in the invention), and has the advantages of low energy consumption, low price of the adsorption material, environmental protection and good performance.
2. The integrated air conditioning device can be completed by simple modification on the basis of the original air conditioner, and CO can be realized almost without additionally increasing the energy consumption of the air conditioner2The filtering, the installation is simple, the maintenance, the change process is convenient, economic and applicable, can adapt to the air conditioners of various models in the existing market.
3. The integrated air conditioning device can realize indoor CO2Continuously filtering and removing CO2The concentration is controlled below a certain level and can be even lower than that of CO in outdoor air2The concentration of the carbon dioxide can realize indoor ultra-low carbon breathing environment.
Drawings
Fig. 1 is a schematic view of an integrated air conditioning apparatus having functions of filtering and trapping indoor carbon dioxide according to the present invention.
FIG. 2 is a wet process CO regeneration of the present invention2A schematic view of the placement of the filter screen.
Fig. 3 is a block diagram of the air conditioning components of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be further illustrated and described below with reference to the accompanying drawings of the present invention, and it should be understood that the embodiments described in this section are some embodiments of the present invention, but not all embodiments. The implementation conditions adopted in the examples can be further adjusted according to the specific conditions of the air conditioner manufacturer, and the implementation conditions not noted are generally routine experimental conditions.
In the description of the embodiments of the present invention, it should be noted that the terms "one side" and "the other side" or the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings of the present invention or the orientation or positional relationship which the present invention product is conventionally placed when in use, and are intended to facilitate the description of the present invention, and the device or the component does not have to have a specific orientation, and thus, the system of the present invention is not to be interpreted as being limited thereto. The terms "first" and "second" in the description are used for distinguishing similar objects or elements in the invention, and are not used for describing a particular order or sequence, so the system of the invention is not limited.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "disposed" and "including" are used broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; the connection can be mechanical connection or electromagnetic connection; they may be directly connected to each other, indirectly connected to each other through an intermediate member, or connected to each other through the inside of two members. The specific meaning of the above terms in the system of the present invention can be understood by those of ordinary skill in the art as appropriate.
In the description of the embodiments of the present invention, it should also be noted that the figures illustrate examples2 shows that the wet method of the invention regenerates CO2One way of placing the filter mesh membrane, not the wet process for regenerating CO2The filter web material is placed in only one, and not only three layers, and therefore should not be construed as limiting the system of the present invention. It will be apparent to one of ordinary skill in the art that modifications may be made as appropriate to the particular situation.
The invention is described in detail below with reference to the figures and specific embodiments.
As shown in fig. 1, the present invention provides an integrated air conditioning device with functions of filtering and capturing indoor carbon dioxide, comprising a housing 1, a partition 9 disposed on the housing 1, and a first cavity 6 and a second cavity 7 separated from each other by the partition 9; the shell 1 is provided with a first air inlet 2 and a first air outlet 4 which are communicated with a first cavity 6, a second air inlet 3 and a second air outlet 5 which are communicated with a second cavity 7, and an atomizing device 11 and a water collector 12 which are communicated with the second cavity 7;
a filter net film rotating frame 8 in an integrated structure is arranged in the first cavity 6 and the second cavity 7; two groups of wet-process regenerated CO are contained in the filter net film rotating frame 82 Filter net film 13, a group of wet process regenerated CO2The filter net membrane is positioned in the first cavity 6, and the other group of wet-process regenerated CO2The filter net membrane is positioned in the second cavity 7;
the partition board 9 is connected with a rotary driving device 10 outside the shell 1, the partition board 9 is turned over by controlling the rotary driving device 10, the filter net film rotating frame 8 is driven to turn over, and therefore two groups of wet-process regenerated CO on the filter net film rotating frame 82The filter mesh membranes 13 are alternately arranged inside the first cavity 6 and the second cavity 7; wet regenerated CO inside the first chamber 62The filter net film 13 adsorbs CO2Wet regenerated CO inside the second chamber 72The filter net film 13 desorbs CO under the action of atomized water vapor2(ii) a Thus, both adsorption and desorption are carried out without interruption.
As a preferred embodiment of the present invention, the first air inlet 2 is installed at one side of the first cavity 6, and is shared with an air inlet of an air conditioner to supply indoor airThe first air outlet 4 is arranged at the other side of the first cavity 6, and air sucked from the room passes through the wet method regenerated CO in the filter net film rotating frame 82After filtering the net film, the net film is discharged from the first air outlet 4 and then discharged into a room after passing through a cooling system of an air conditioner. The first air inlet and the air inlet of the air conditioner are shared, so that the processing and manufacturing cost is saved.
As a preferred embodiment of the present invention, the second air inlet 3 is installed at one side of the second cavity 7, the second air inlet 3 is connected to the outside of the room, and when the air conditioner works, outdoor air is introduced, and the second air outlet 5 is installed at the other side of the second cavity 7, so that air in the second cavity 7 is discharged to the outside of the room through the second air outlet 5.
As a preferred embodiment of the present invention, the wet regeneration of CO2The filter net film 13 is loaded with CO3 2-The anion exchange resin membrane or the anion exchange resin particle is CO based on humidity control2The cyclic adsorption/desorption material, anion exchange resin membrane or anion exchange resin particles can automatically adsorb CO in dry environment2After adsorption saturation, the catalyst can automatically desorb CO in a humid environment2. The anion exchange resin membrane material is low in price, environment-friendly and good in performance.
In this embodiment, the anion exchange resin membrane or the anion exchange resin particles may be placed by various methods according to the size of the indoor space, and the material may be provided in various shapes. To ensure CO, the anion exchange resin membrane has poor gas permeability2The anion exchange resin membrane can be honeycomb (as shown in figure 2), or other shapes, and can be arranged in single layer or multiple layers, and in the specific implementation process, the anion exchange resin membrane can be arranged according to the size of the indoor space and the air conditioner internal space, and the CO in the indoor space2The amount of the anion exchange resin membrane or the anion exchange resin particles is appropriately added or reduced in concentration.
As a preferred embodiment of the invention, the atomization device 11 is toThe water condensed by the air conditioner is atomized and sprayed into the second cavity 7, and tap water can be introduced into the water receiving pipe to wet the wet-process regenerated CO in the second cavity 72 Filter mesh 13, thereby regenerating the filter mesh, CO2Is released out; the water collector 12 collects water in the second cavity 7, and the recovered water is sent back to the atomization device 11 for recycling through a pipeline.
In order to make the first cavity and the second cavity independent from each other and have good sealing performance, in this embodiment, the partition plate 9 further includes sealing members disposed on two sides of the partition plate 9. The partition 9 is connected to a rotary drive 10 outside the housing 1.
Specifically, the output end of the rotary driving device 10 passes through the housing and is arranged outside the housing, and this arrangement makes it easier and simpler for a worker or a user to maintain or replace the rotary driving device, thereby reducing the labor intensity of the worker.
As shown in fig. 3, in this embodiment, an air conditioner is further provided, which includes an indoor air conditioner unit 14, where the indoor air conditioner unit 14 includes the integrated air conditioner provided above, and the integrated air conditioner is disposed between an air inlet of the indoor air conditioner unit 14 and an evaporator.
From the above description, it can be seen that the following technical effects are achieved in the above-described embodiments of the present invention: the used adsorbing material is cheap, environment-friendly and good in performance; the device is simple to install, convenient and quick in maintenance and replacement processes, economical and applicable, and can be adapted to various types of air conditioners in the existing market; the integrated air conditioning device can efficiently and quickly filter and capture CO in indoor air2Introduction of CO into2The concentration is controlled below a preset level and can be even lower than the CO in the outdoor air2Concentration, and indoor ultra-low carbon breathing environment is realized.
The above embodiments are only for illustrating the technical idea and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to practice the technology according to the present invention, and it should be noted that all embodiments obtained by only making certain modifications to the present invention within the principle of the present invention without making creative efforts by those skilled in the art are within the protection scope of the present invention.
Claims (9)
1. An integrated air conditioning device with functions of filtering and capturing indoor carbon dioxide is characterized by comprising a shell (1), a partition plate (9) arranged on the shell (1) and a first cavity (6) and a second cavity (7) which are separated from each other by the partition plate (9); the shell (1) is provided with a first air inlet (2) and a first air outlet (4) which are communicated with the first cavity (6), a second air inlet (3) and a second air outlet (5) which are communicated with the second cavity (7), and an atomizing device (11) and a water collector (12) which are communicated with the second cavity (7);
a filter net film rotating frame (8) with an integrated structure is arranged in the first cavity (6) and the second cavity (7); the filter net film rotating frame (8) comprises two groups of wet-process regenerated CO2A filter net film (13), a group of wet-process regenerated CO2The filter net film is positioned in the first cavity (6), and the other group of wet-process regenerated CO2The filter net membrane is positioned in the second cavity (7);
the partition plate (9) is connected with a rotary driving device (10) outside the shell (1), the partition plate (9) is turned over by controlling the rotary driving device (10), the filter net film rotating frame (8) is driven to turn over, and two groups of wet-process regenerated CO on the filter net film rotating frame (8) are enabled to be regenerated2The filter net films (13) alternately appear in the first cavity (6) and the second cavity (7); wet process CO regeneration inside the first chamber (6)2The filter net film (13) adsorbs CO2Wet regenerated CO inside the second chamber (7)2The filter net film (13) desorbs CO under the action of atomized water vapor2(ii) a Thus, both adsorption and desorption are carried out without interruption.
2. The integrated air conditioner with indoor carbon dioxide filtering and capturing function as claimed in claim 1, wherein: the first air inlet (2) is arranged on one side of the first cavity (6) and is shared with the air inlet of the air conditioner to suck indoor air, the first air outlet (4) is arranged on the other side of the first cavity (6), and wet-process regeneration CO in the filter net film rotating frame (8) is carried out on the air sucked from the indoor2After the net membrane is filtered, the air is discharged from the first air outlet (4) and then is discharged into a room after passing through a cooling system of an air conditioner.
3. The integrated air conditioner with indoor carbon dioxide filtering and capturing function as claimed in claim 1, wherein: the second air inlet (3) is arranged on one side of the second cavity (7), the second air inlet (3) is connected to the outside, outdoor air is introduced during working, the second air outlet (5) is arranged on the other side of the second cavity (7), and the air in the second cavity (7) is discharged to the outside through the second air outlet (5).
4. The integrated air conditioner with indoor carbon dioxide filtering and capturing function as claimed in claim 1, wherein: the wet method for regenerating CO2The filter net film (13) is loaded with CO3 2-The anion exchange resin membrane or the anion exchange resin particle is CO based on humidity control2The cyclic adsorption/desorption material, anion exchange resin membrane or anion exchange resin particles can automatically adsorb CO in dry environment2After adsorption saturation, the catalyst can automatically desorb CO in a humid environment2。
5. The integrated air conditioner with indoor carbon dioxide filtering and capturing function as claimed in claim 1, wherein: the anion exchange resin membrane or the anion exchange resin particles can be placed in various ways according to the sizes of indoor spaces and air conditioner internal spaces, and can be set in different shapes.
6. The integrated air conditioner with indoor carbon dioxide filtering and capturing function as claimed in claim 1, wherein: the atomization device (11) atomizes water condensed by the air conditioner into the second cavity (7) to wet the wet-process regenerated CO in the second cavity (7)2Filtering the mesh (13) so as to allow wet regeneration of CO2Regeneration of the filter screen (13), CO2Is released out; the water collector(12) And collecting water in the second cavity (7), and sending the recovered water back to the atomization device (11) for recycling through a pipeline.
7. The integrated air conditioner with indoor carbon dioxide filtering and capturing function as claimed in claim 1, wherein: the partition plate (9) further comprises sealing pieces which are arranged on two sides of the partition plate (9) so that the first cavity (6) and the second cavity (7) are mutually independent through the partition plate (9) and are complete in sealing performance.
8. The integrated air conditioning unit with the function of filtering and capturing indoor carbon dioxide according to claim 1. The method is characterized in that: after uninterrupted continuous adsorption-desorption cycle, indoor CO is separated2The concentration is controlled below a preset level and even lower than that of CO in outdoor air2The concentration of (c).
9. Air conditioner comprising an indoor unit (14) of the air conditioner, characterized in that the indoor unit (14) of the air conditioner comprises an integrated air conditioning device according to any one of claims 1 to 8, the integrated air conditioning device being arranged between an air inlet and an evaporator of the indoor unit (14) of the air conditioner.
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| CN113075949A (en) * | 2021-03-24 | 2021-07-06 | 西北大学 | Fruit vegetables storeroom CO2Automatic concentration regulating and controlling device and working method thereof |
| CN115200137A (en) * | 2022-07-14 | 2022-10-18 | 珠海横琴润霖生物科技有限公司 | Ultraviolet ray sterilizer |
| CN115200137B (en) * | 2022-07-14 | 2023-09-01 | 珠海横琴润霖生物科技有限公司 | Ultraviolet sterilizer |
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