CN114543242A - Air duct opening structure with ultraviolet germicidal lamp - Google Patents

Air duct opening structure with ultraviolet germicidal lamp Download PDF

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Publication number
CN114543242A
CN114543242A CN202011338287.0A CN202011338287A CN114543242A CN 114543242 A CN114543242 A CN 114543242A CN 202011338287 A CN202011338287 A CN 202011338287A CN 114543242 A CN114543242 A CN 114543242A
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CN
China
Prior art keywords
air
opening
germicidal lamp
air duct
lamp
Prior art date
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
CN202011338287.0A
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Chinese (zh)
Inventor
朱官柏
谢秀明
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APM Communication Inc
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APM Communication Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by APM Communication Inc filed Critical APM Communication Inc
Priority to CN202011338287.0A priority Critical patent/CN114543242A/en
Publication of CN114543242A publication Critical patent/CN114543242A/en
Pending legal-status Critical Current

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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
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/16—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filtering; by sterilisation; by ozonisation
    • 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
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)

Abstract

An air pipe opening structure with an ultraviolet germicidal lamp comprises an air pipe opening, a first air pipe opening and a second air pipe opening, wherein the air pipe opening is arranged in an indoor space and used for exhausting air or supplying air, and the air pipe opening is used for being connected with an air pipe during installation; the air pipe port comprises two openings, one opening is an inner end opening close to the inner side of the air pipe, and the other opening is an outer end opening close to the outer side of the air pipe; one of the two openings is used for air intake, and the other opening is used for air exhaust; at least one UV germicidal lamp is arranged in the air duct opening and used for irradiating ultraviolet rays to kill bacteria in the air; the projection angle of the UV germicidal lamp must be such that the ultraviolet light does not reach directly below the air duct opening. This tuber pipe mouth inside still can dispose an at least deep bead, and at the inside runner that forms of this tuber pipe mouth, can prolong the air at the intraoral path length that flows of this tuber pipe to and avoid the wind gap too big to cause the air not enough at the intraoral dwell time of tuber pipe and lead to this UV bactericidal lamp's bactericidal effect to reduce.

Description

Air duct opening structure with ultraviolet germicidal lamp
Technical Field
The present invention relates to an air duct opening structure, and more particularly, to an air duct opening structure with an ultraviolet germicidal lamp.
Background
In the prior art, a plurality of UV germicidal lamp devices are arranged in offices or other artificial work spaces, and ultraviolet rays are irradiated to sterilize the work spaces. Because the ultraviolet rays projected by the UV germicidal lamp can cause harm to human bodies, the UV germicidal lamp must be turned off when people or animals exist in a room, and the UV germicidal lamp must be turned on when no people or animals exist.
However, frequent turning on and off of the UV germicidal lamp causes the operator to be rather tired. If the UV germicidal lamp is turned on and off automatically by applying an automatic operation mode instead, on the one hand, the cost is increased, and in addition, the service life of the UV germicidal lamp is reduced. And the indoor space often all is that someone is in the inside for a long time, if only detect that the indoor space nobody can open the UV bactericidal lamp, will make most of time all can't open the UV bactericidal lamp. For example, during the working hours of the office, most of the time is that people are in the office, so the proper sterilization purpose cannot be achieved in practice.
The present invention is intended to provide a new design, which can still turn on the UV germicidal lamp for a long time when there is a person in the indoor space, so as to achieve a better germicidal effect, and to solve the above technical drawbacks.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides an air duct opening structure with an ultraviolet germicidal lamp, wherein the UV germicidal lamp is arranged inside the air duct opening, when air of an air conditioning system passes through the air duct opening, the passing air can be sterilized by the UV germicidal lamp and then discharged into a room, and the UV germicidal lamp is arranged inside the air duct opening and cannot irradiate the indoor space, so that the UV germicidal lamp can be continuously turned on for a long time even if people exist in the indoor space, and the due purpose of sterilization can be achieved. And the UV germicidal lamp does not need to be manually switched on and off, and the use is quite convenient. The invention can also arrange a wind shield in the air duct opening to form a flow passage, can prolong the length of the flow path of air, increases the irradiation efficiency of the UV germicidal lamp and achieves the better sterilization purpose. The structure of the invention is quite simple, and the UV germicidal lamp does not need to be automatically switched on and off by a detector sensing personnel, thereby greatly saving the cost. The wind shield of the invention can also adopt materials which can be penetrated by ultraviolet rays, and can increase the irradiation range of the ultraviolet rays in the air duct opening. The invention can also form a reflecting layer on the inner side wall surface of the air duct opening for reflecting ultraviolet rays so as to increase the irradiation utilization rate of the ultraviolet rays.
The invention provides an air duct opening structure with an ultraviolet germicidal lamp, which comprises an air duct opening, a first air duct opening and a second air duct opening, wherein the air duct opening is arranged in an indoor space and used for exhausting air or intaking air, and the air duct opening is used for being connected with an air duct during installation; the air pipe port comprises two openings, one opening is an inner end opening close to the inner side of the air pipe, and the other opening is an outer end opening close to the outer side of the air pipe; one of the two openings is used for air intake, and the other opening is used for air exhaust; the UV sterilizing lamp is arranged in the air duct opening and used for irradiating ultraviolet rays to kill bacteria in the air; wherein the projection angle of the UV germicidal lamp must be such that the ultraviolet rays do not reach directly below the air duct opening.
Wherein, the air duct also comprises at least one wind screen which is arranged inside the air duct opening and forms a flow passage inside the air duct opening; the UV germicidal lamp is arranged in the flow passage; one end of the flow channel is arranged at one opening of the air pipe opening, and the other end of the flow channel is arranged at the other opening of the air pipe opening; the path length of the air flowing in the air duct opening can be extended.
The at least one wind screen is a plurality of wind screens to form a curved flow channel so as to prolong the whole length of the flow channel, and a plurality of UV germicidal lamps are arranged.
Wherein the UV germicidal lamp is an ultraviolet lamp or an ultraviolet LED lamp.
Wherein this UV bactericidal lamp is the form of fluorescent tube or the form of lamp pearl tandem, perhaps this UV bactericidal lamp is the form of lamp pearl tandem, and is the bank lamp that a plurality of lamp pearls formed in tandem.
Wherein when this deep bead was installed at this tuber pipe mouth inside, this UV bactericidal lamp was not disposed in this outer end opening part near this tuber pipe mouth to avoid this UV bactericidal lamp to shine outside personnel.
Wherein the UV germicidal lamp is parallel to the air flowing direction in the air duct opening and can have larger irradiation sectional area.
Wherein, the air pipe also comprises an indicator light which is arranged outside the air pipe opening and is used for displaying the running state of the UV germicidal lamp.
The control unit is connected with the at least one UV germicidal lamp and used for controlling the starting time period of the UV germicidal lamp.
The wind shield is made of a material which can enable ultraviolet rays to penetrate through, so that the ultraviolet rays of the UV germicidal lamp can penetrate through the wind shield to irradiate other positions inside the air duct opening, and the irradiation range of the ultraviolet rays is enlarged.
Wherein the wind shield is made of glass, transparent material or semitransparent material.
Wherein the inside wall face of this tuber pipe mouth has a reflection stratum, comprises the ultraviolet material of reflexibility, and this reflection stratum is used for reflecting the ultraviolet ray of this UV bactericidal lamp for ultraviolet ray can continuously shine this tuber pipe mouth inside after being reflected, and improves this ultraviolet ray and shine the utilization ratio in this tuber pipe mouth.
A further understanding of the nature and advantages of the present invention will become apparent from the following description when read in conjunction with the accompanying drawings.
Drawings
FIG. 1 is a schematic view of the combination of elements of the present invention;
FIG. 2 is a schematic view of a windshield and UV germicidal lamp configuration of the present invention;
FIG. 3 is a schematic view of another arrangement of the windshield and UV germicidal lamp of the present invention;
FIG. 4 is a schematic view of another arrangement of the windshield and UV germicidal lamp of the present invention;
FIG. 5 is a schematic view of another arrangement of the windshield and the UV germicidal lamp of the present invention;
FIG. 6 is a schematic view of a bank of lamps when the UV germicidal lamp of the present invention is an ultraviolet LED lamp;
FIG. 7 is a schematic view of the irradiation range of the UV germicidal lamp of the present invention when the UV germicidal lamp is an ultraviolet LED lamp;
FIG. 8 is a schematic view of the connection blocks of the control unit, the UV germicidal lamp and the indicator lamp according to the present invention;
FIG. 9 is a schematic view of the ultraviolet light transmitting wind guard of the present invention;
FIG. 10 is a schematic view of the inner side wall of the tuyere of the present invention having a reflective layer.
Description of the reference numerals
1 air duct 30 wind shield
10 air pipe port 40 flow passage
11 inner end opening 50 indicator lamp
12 outer end opening 60 control unit
13-opening 100-row lamp
15 reflection layer 201 lamp tube
20 UV germicidal lamp 202 lamp bead
21 ultraviolet lamp 205 ultraviolet
22 ultraviolet LED lamp.
Detailed Description
The present invention will now be described in detail with reference to the drawings, wherein the same reference numerals are used to designate the same elements, components, and advantages thereof.
Referring to fig. 1 to 10, the air duct structure with an ultraviolet germicidal lamp according to the present invention is shown, which includes the following components:
and the air pipe opening 10 is arranged in the indoor space and used for exhausting or intaking air, and the air pipe opening 10 is used for connecting an air pipe 1 during installation. Preferably an air outlet. The air duct opening 10 comprises two openings 13, one opening 13 being an inner end opening 11 near the inner side of the air duct 1, the other opening 13 being an outer end opening 12 near the outer side of the air duct 1, typically the outer end opening 12 being closer to the person concerned. One opening 13 of the two openings 13 can be used for air intake, and the other opening 13 can be used for air exhaust, and is not limited to the inner end opening 11 or the outer end opening 12.
At least one UV germicidal lamp 20 in the air duct opening 10 for irradiating ultraviolet rays to kill bacteria in the air. The UV germicidal lamp 20 may be a general ultraviolet lamp 21 or an ultraviolet LED lamp 22. The UV germicidal lamp 20 may be in the form of a lamp tube 201 or a string of lamp beads 202. When the UV germicidal lamp 20 is in the form of a string of lamp beads 202, the UV germicidal lamp can be a bank of lamps formed by a plurality of strings of lamp beads 202 for better germicidal effect. Wherein the projection angle of the UV germicidal lamp 20 must be such that the ultraviolet rays do not reach directly below the air duct opening 10.
At least one wind deflector 30 is disposed inside the air duct 10, and a flow passage 40 is formed inside the air duct 10, one end of the flow passage 40 is located at one of the openings 13 of the air duct 10, and the other end of the flow passage 40 is located at the other opening 13 of the air duct 10, so that air can flow from one of the openings 13 to the other opening 13 of the air duct 10 along the flow passage 40. The overall length of the path for air to flow within the air hose port 10 can be extended. And the air baffle 30 is arranged in the air duct opening 10 to prolong the flow passage 40, so that the phenomenon that the sterilizing effect of the UV sterilizing lamp 20 is reduced due to insufficient air retention time in the air duct opening 10 caused by overlarge air openings can be avoided.
Wherein the UV germicidal lamp 20 is disposed in the flow channel 40, preferably the at least one UV germicidal lamp 20 can be disposed along the flow channel 40, so as to achieve a better germicidal effect. When the wind screen 30 is installed inside the air duct opening 10, it is preferable that the UV germicidal lamp 20 is not disposed near the outer end opening 12 of the air duct opening 10 to prevent the UV germicidal lamp 20 from irradiating the outside person, so that the UV germicidal lamp 20 can be turned on for a long time.
As shown in fig. 5, the at least one wind deflector 30 may be a plurality of wind deflectors 30 to form a curved flow channel 40, so as to extend the entire length of the flow channel 40, and a plurality of UV germicidal lamps 20 are disposed.
With the above configuration, since the UV germicidal lamp 20 does not directly irradiate the person under the air duct opening 10, the person is not injured. And in case of human, the UV germicidal lamp 20 can still be turned on for use. The UV germicidal lamp 20 cannot be used without a person. When nobody uses the UV sterilizing lamp, the installation effect of the UV sterilizing lamp is not good.
Fig. 1 to 5 show different configurations of the windshield 30 and the UV germicidal lamp 20, wherein arrows indicate the air flow direction.
As shown in fig. 1, a wind screen 30 and a UV germicidal lamp 20 are disposed inside the air duct opening 10, wherein the UV germicidal lamp 20 is a general ultraviolet lamp 21 and is in the form of a lamp tube 201 (or in the form of a string of lamp beads), and the UV germicidal lamp 20 is perpendicular to the air flowing direction inside the air duct opening 10, so that the air duct opening has a better sterilizing effect than that when the wind screen 30 is not disposed.
As shown in fig. 2 and 3, two wind shields 30 and a UV germicidal lamp 20 are disposed inside the air duct 10, wherein the UV germicidal lamp 20 is a general ultraviolet lamp 21 and is in the form of a lamp tube 201 (or in the form of a string of lamp beads), the UV germicidal lamp 20 is perpendicular to the air flowing direction inside the air duct 10, and the length of the flow channel 40 can be extended by using two wind shields 30, so the configuration of fig. 2 and 3 has a better germicidal effect compared with the configuration of fig. 1.
As shown in fig. 4, a wind screen 30 and a UV germicidal lamp 20 are disposed inside the air duct 10, wherein the UV germicidal lamp 20 is a general ultraviolet lamp 21 and is in the form of a lamp tube 201 (or in the form of a string of lamp beads), and the UV germicidal lamp 20 is parallel to the air flowing direction inside the air duct 10, so as to have a larger irradiation cross-sectional area and achieve a better sterilization purpose.
As shown in fig. 5, four wind shields 30 and a plurality of UV germicidal lamps 20 are arranged inside the air duct opening 10, the plurality of UV germicidal lamps 20 are arranged along the flow channel 40, each UV germicidal lamp 20 is an ultraviolet LED lamp 22 and is in a form of a string of lamp beads 202, the air flowing direction in each UV germicidal lamp 20 and the air duct opening 10 is vertical, and the configuration mode of the lamp beads 202 of the plurality of UV germicidal lamps 20 is applied, so that a better germicidal effect is achieved.
When the UV germicidal lamp 20 is an ultraviolet LED lamp 22 and is in the form of a string of lamp beads 202, the lamp bank 100 is composed of a plurality of lamp beads 202 in a string, the arrangement is as shown in fig. 6, wherein each lamp bead 202 has a specific irradiation range, and therefore, an array arrangement must be formed to achieve the required irradiation intensity, and fig. 7 shows that the included angle between the irradiation range of each lamp bead 202 and the vertical direction is 70 degrees, so the irradiation angle must be considered when designing the ultraviolet LED lamp of the present invention.
As shown in fig. 9, the wind shield 30 is preferably made of a material (e.g., glass, a transparent material, a translucent material, etc.) that can be penetrated by ultraviolet rays, so that the ultraviolet rays 205 of the UV germicidal lamp 20 can penetrate the wind shield 30 to irradiate other positions inside the air duct 10, thereby increasing the irradiation range of the ultraviolet rays. The ultraviolet rays 205 of the UV germicidal lamp 20 are indicated by dashed lines in fig. 9.
As shown in fig. 10, the inner sidewall of the air duct opening 10 preferably has a reflective layer 15 made of a material capable of reflecting ultraviolet rays, and the reflective layer 15 is used for reflecting the ultraviolet rays 205 of the UV germicidal lamp 20, so that the ultraviolet rays 205 can continuously irradiate the inside of the air duct opening 10 after being reflected, thereby improving the irradiation utilization rate of the ultraviolet rays in the air duct opening 10. The ultraviolet rays 205 of the UV germicidal lamp 20 are indicated by dashed lines in fig. 10.
An indicator light 50 is provided outside the air duct port 10 for indicating the operation state of the UV germicidal lamp 20.
A control unit 60 is connected to the at least one UV germicidal lamp 20 (shown in fig. 8) for controlling the start-up period of the UV germicidal lamp 20. The UV germicidal lamp 20 may thus be turned on at a certain time, for example the UV germicidal lamp 20 may be turned on during a period of time between 30 minutes before work and up to the time of work.
The air conditioner air-conditioning system has the advantages that the UV sterilizing lamp is arranged inside the air duct opening, when air of the air-conditioning system passes through the air duct opening, the passing air can be sterilized by the UV sterilizing lamp and then discharged into a room, and the UV sterilizing lamp is arranged inside the air duct opening and cannot irradiate the indoor space, so that the UV sterilizing lamp can be continuously turned on for a long time even if people exist in the indoor space, and the due sterilization purpose can be achieved. And the UV germicidal lamp does not need to be manually switched on and off, so the use is quite convenient. The invention can also arrange a wind shield in the air duct opening to form a flow passage, can prolong the length of the flow path of air, increases the irradiation efficiency of the UV germicidal lamp and achieves the better sterilization purpose. The structure of the invention is quite simple, and the detector sensing personnel is not needed to automatically switch on and off the UV germicidal lamp, thereby greatly saving the cost. The wind shield of the invention can also adopt materials which can be penetrated by ultraviolet rays, and can increase the irradiation range of the ultraviolet rays in the air duct opening. The invention can also form a reflecting layer on the inner side wall surface of the air duct opening for reflecting ultraviolet rays so as to increase the irradiation utilization rate of the ultraviolet rays.
The detailed description is specific to one possible embodiment of the invention, but the embodiment is not intended to limit the scope of the invention, and equivalent implementations or modifications without departing from the scope of the invention are intended to be included in the scope of the invention.

Claims (12)

1. The utility model provides an air pipe mouth structure with sterilamp which characterized in that includes:
the air pipe opening is arranged in the indoor space and used for exhausting air or intaking air, and the air pipe opening is used for connecting an air pipe when the air pipe opening is arranged; the air pipe port comprises two openings, one opening is an inner end opening close to the inner side of the air pipe, and the other opening is an outer end opening close to the outer side of the air pipe; one of the two openings is used for air intake, and the other opening is used for air exhaust; and
at least one UV germicidal lamp, which is positioned in the air duct opening and is used for irradiating ultraviolet rays to kill bacteria in the air; wherein the projection angle of the UV germicidal lamp prevents ultraviolet rays from directly reaching the lower part of the air pipe opening.
2. The air duct with UV germicidal lamp as in claim 1, further comprising at least one air baffle inside the air duct, wherein a flow channel is formed inside the air duct; the UV germicidal lamp is arranged in the flow passage; one end of the flow passage is arranged at one opening of the air pipe opening, and the other end of the flow passage is arranged at the other opening of the air pipe opening.
3. The air duct opening structure with ultraviolet germicidal lamps as claimed in claim 2, wherein the at least one air blocking plate is a plurality of air blocking plates, a curved flow channel is formed inside the air duct opening to extend the entire length of the flow channel, and a plurality of UV germicidal lamps are disposed in the flow channel.
4. The air duct opening structure with UV germicidal lamp as claimed in claim 2, wherein when the wind screen is installed inside the air duct opening, the UV germicidal lamp is not disposed at the outer end opening near the air duct opening to prevent the UV germicidal lamp from irradiating to external personnel.
5. The air duct port structure with the ultraviolet germicidal lamp as claimed in claim 2, wherein the wind screen is made of a material that can be penetrated by ultraviolet rays, so that the ultraviolet rays of the UV germicidal lamp can penetrate the wind screen to irradiate other positions inside the air duct port, thereby increasing the irradiation range of the ultraviolet rays.
6. The air duct with UV germicidal lamp as claimed in claim 5, wherein the wind screen is made of glass, transparent material or translucent material.
7. The air duct port structure with UV germicidal lamp as claimed in claim 1, wherein the UV germicidal lamp is a UV lamp or a UV LED lamp.
8. The air duct port structure with the ultraviolet germicidal lamp as claimed in claim 1, wherein the UV germicidal lamp is in the form of a lamp tube or a lamp bead string, or the UV germicidal lamp is in the form of a lamp bead string and is a row lamp formed by a plurality of lamp bead strings.
9. The air duct port structure with ultraviolet germicidal lamp as claimed in claim 1, wherein the UV germicidal lamp is parallel to the air flow direction in the air duct port and has a larger irradiation cross-sectional area.
10. The air duct port structure with UV germicidal lamp as claimed in claim 1, further comprising an indicator light outside the air duct port for indicating the operation status of the UV germicidal lamp.
11. The air duct with UV germicidal lamp as claimed in claim 1, further comprising a control unit connected to the at least one UV germicidal lamp for controlling the activation period of the UV germicidal lamp.
12. The air duct opening structure with ultraviolet germicidal lamp as claimed in claim 1, wherein an inner sidewall of the air duct opening has a reflective layer made of a material capable of reflecting ultraviolet rays, and the reflective layer is used for reflecting the ultraviolet rays of the UV germicidal lamp, so that the ultraviolet rays can continuously irradiate the inside of the air duct opening after being reflected, thereby improving the irradiation utilization rate of the ultraviolet rays in the air duct opening.
CN202011338287.0A 2020-11-25 2020-11-25 Air duct opening structure with ultraviolet germicidal lamp Pending CN114543242A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011338287.0A CN114543242A (en) 2020-11-25 2020-11-25 Air duct opening structure with ultraviolet germicidal lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011338287.0A CN114543242A (en) 2020-11-25 2020-11-25 Air duct opening structure with ultraviolet germicidal lamp

Publications (1)

Publication Number Publication Date
CN114543242A true CN114543242A (en) 2022-05-27

Family

ID=81659427

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011338287.0A Pending CN114543242A (en) 2020-11-25 2020-11-25 Air duct opening structure with ultraviolet germicidal lamp

Country Status (1)

Country Link
CN (1) CN114543242A (en)

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