CN215994923U - Ultraviolet sterilization system and ultraviolet sterilization equipment - Google Patents
Ultraviolet sterilization system and ultraviolet sterilization equipment Download PDFInfo
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- CN215994923U CN215994923U CN202120538401.8U CN202120538401U CN215994923U CN 215994923 U CN215994923 U CN 215994923U CN 202120538401 U CN202120538401 U CN 202120538401U CN 215994923 U CN215994923 U CN 215994923U
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Abstract
The utility model discloses an ultraviolet sterilization system and an ultraviolet sterilization device, wherein the ultraviolet sterilization system comprises a power management circuit, a switch timing circuit and an ultraviolet sterilization circuit; the switch timing circuit is connected with the power management circuit and comprises a control switch and a timing chip connected with the control switch, wherein the control switch is used for forming a control signal, and the timing chip is used for forming a timing signal according to the control signal; and the ultraviolet sterilization circuit is connected with the timing chip and the power management circuit and is used for performing timing sterilization according to the timing signal. According to the technical scheme, when a user uses the ultraviolet sterilization equipment, ultraviolet rays irradiated by the ultraviolet light source are prevented from irradiating a human body, and the safety of the ultraviolet sterilization system is improved.
Description
Technical Field
The utility model relates to the technical field of ultraviolet sterilization, in particular to an ultraviolet sterilization system and ultraviolet sterilization equipment.
Background
Public facilities such as toilets and trash cans installed in public places such as hospitals, hotels and shopping malls and sold in the market rarely have a sterilization function, and since various bacteria are easily generated in the public facilities due to frequent cross-sharing of people, the sanitary problems of the public facilities such as the toilets and trash cans bring great troubles to the lives of people.
In order to solve the above problems, the prior art generally installs an ultraviolet sterilization system on the public facilities, and sterilizes the public facilities using the ultraviolet sterilization function of the ultraviolet sterilization system. The existing ultraviolet sterilization system is simply composed of a driving power supply and an ultraviolet light source, has a simple structure, and can enable the ultraviolet light source to work normally by converting commercial power into voltage required by the ultraviolet light source through the driving power supply. However, the existing ultraviolet sterilization system needs to use the commercial power as a power supply, has no portability, is not beneficial to being used in occasions without the commercial power, has no corresponding human ultraviolet protection function, and has the risk of irradiating human bodies by ultraviolet rays in the using process, thereby causing potential safety hazards to human bodies.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides an ultraviolet sterilization system and ultraviolet sterilization equipment, and aims to solve the problem that the existing ultraviolet sterilization system is poor in safety.
An ultraviolet sterilization system comprises a power management circuit, a switch timing circuit and an ultraviolet sterilization circuit;
the switch timing circuit is connected with the power management circuit and comprises a control switch and a timing chip connected with the control switch, wherein the control switch is used for forming a control signal, and the timing chip is used for forming a timing signal according to the control signal;
the ultraviolet sterilization circuit is connected with the timing chip and the power management circuit and is used for performing timing sterilization according to the timing signal.
Further, the power management circuit comprises a charging and discharging circuit and a power management chip;
the charging and discharging circuit is connected with the power management chip and the switch timing circuit;
and the power supply management chip is connected with the ultraviolet sterilization circuit.
Further, the charging and discharging circuit comprises a charging and discharging battery and an external charger;
the positive pole of the charge-discharge battery is connected with the switch timing circuit and the first end of the power management chip, and the negative pole of the charge-discharge battery is connected with the grounding end;
and the external charger is connected with the second end of the power management chip.
Furthermore, the charging and discharging circuit further comprises a first filter capacitor and a second filter capacitor;
one end of the first filter capacitor is connected with the first end of the power management chip, and the other end of the first filter capacitor is connected with a grounding end;
and one end of the second filter capacitor is connected with the second end of the power management chip, and the other end of the second filter capacitor is connected with the grounding end.
Further, the control switch is an angle switch.
Further, the ultraviolet sterilization circuit comprises a driving resistor, a control switch tube and an ultraviolet sterilization lamp;
the driving resistor is connected with the timing chip and the control switch tube;
the control switch tube is connected with the ultraviolet germicidal lamp;
and the ultraviolet germicidal lamp is connected with the third end of the power management chip.
Furthermore, the ultraviolet sterilization circuit also comprises a current-limiting resistor;
one end of the current-limiting resistor is connected with the control switch tube, and the other end of the current-limiting resistor is connected with the grounding end.
Further, the ultraviolet sterilization system comprises a third filter capacitor and a fourth filter capacitor;
one end of the third filter capacitor is connected with the fourth end of the power management chip, and the other end of the third filter capacitor is connected with a grounding end;
one end of the fourth filter capacitor is connected with the charging and discharging circuit, and the other end of the fourth filter capacitor is connected with the grounding end.
Further, the power management chip comprises a charging management circuit and a boost conversion circuit;
the charging management circuit is connected with the external charger and the charging and discharging battery;
and the boost conversion circuit is connected with the charge-discharge battery and the ultraviolet sterilization circuit.
An ultraviolet sterilization device comprises the ultraviolet sterilization system.
The ultraviolet sterilization system and the ultraviolet sterilization equipment have the advantages that the switch timing circuit comprises the control switch and the timing chip connected with the control switch, and the control switch can form a control signal under a specific condition so that the timing chip is used for forming the timing signal according to the control signal; the ultraviolet sterilization circuit performs timed sterilization according to the timing signal, so that when a user uses the ultraviolet sterilization equipment, ultraviolet rays irradiated by the ultraviolet light source are prevented from irradiating a human body, and the safety of the ultraviolet sterilization system is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic circuit diagram of an ultraviolet sterilization system according to an embodiment of the present invention.
In the figure: 10. a power management circuit; 11. a charge and discharge circuit; 12. a power management chip; 20. a switching timing circuit; 21. a timing chip; 30. an ultraviolet sterilization circuit.
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 some, not all, embodiments of the present invention. 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.
It is to be understood that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art. In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity to indicate like elements throughout.
In the following description, for purposes of explanation, specific details are set forth in order to provide a thorough understanding of the present invention. The following detailed description of the preferred embodiments of the utility model, however, the utility model is capable of other embodiments in addition to those detailed.
The embodiment provides an ultraviolet sterilization system, which is applied to an ultraviolet sterilization device, wherein the ultraviolet sterilization device comprises but is not limited to public facilities such as a toilet and a trash can or other devices with ultraviolet sterilization requirements, and is used for improving the safety of the ultraviolet sterilization device when people use the ultraviolet sterilization device.
The present embodiment provides an ultraviolet sterilization system, as shown in fig. 1, including a power management circuit 10, a switch timing circuit 20 and an ultraviolet sterilization circuit 30; the switch timing circuit 20 is connected with the power management circuit 10 and comprises a control switch Key and a timing chip 21 connected with the control switch Key, wherein the control switch Key is used for forming a control signal, and the timing chip 21 is used for forming a timing signal according to the control signal; and the ultraviolet sterilization circuit 30 is connected with the timing chip 21 and the power management circuit 10 and is used for performing timing sterilization according to the timing signal.
The ultraviolet sterilization equipment includes but is not limited to public facilities such as a toilet and a garbage bin. The control switch Key includes, but is not limited to, an angle switch or a Key switch. Preferably, the control switch Key may be an angle switch, which facilitates the formation of the control signal when the ultraviolet sterilization system is applied to the ultraviolet sterilization apparatus. For example, the angle switch is mounted on a toilet lid or a trash can lid, and when the toilet lid or the trash can lid is opened or closed, the angle switch can trigger the control signal. The ultraviolet sterilization circuit 30 includes at least one ultraviolet light source. The plurality of ultraviolet light sources are connected in series. For example, the ultraviolet light source includes, but is not limited to, an ultraviolet germicidal lamp D or other light source capable of irradiating ultraviolet light. The control signals include an on control signal and an off control signal. For example, the turn-on control signal is a signal that is triggered when the control switch Key is turned on. The closing control signal is a signal triggered when the control switch Key is closed.
As an example, the switch timing circuit 20 is connected to the power management circuit 10, and is configured to obtain the power supply from the power management circuit 10. The switch timing circuit 20 includes a control switch Key and a timing chip 21 connected to the control switch Key. The control switch Key is used for forming a control signal, and the timing chip 21 is used for forming a timing signal according to the control signal; and the ultraviolet sterilization circuit 30 is connected with the timing chip 21 and the power management circuit 10 and is used for performing timing sterilization according to the timing signal. For example, the angle switch is installed on the toilet lid or the garbage can lid, when the toilet lid or the garbage can lid is closed, the angle switch is opened to trigger the start control signal, at this time, the timing chip 21 acquires the start control signal, forms a timing signal according to the start control signal, sends the timing signal to the ultraviolet sterilization circuit 30, and meanwhile, the timing chip 21 starts timing; the ultraviolet sterilization circuit 30 lights the ultraviolet light source according to the timing signal to start sterilization and disinfection of the closestool or the garbage can; before the timing chip 21 finishes timing, if the toilet lid or the garbage can lid is not opened, that is, the angle switch is not closed, the timing chip 21 continuously sends a timing signal to the ultraviolet sterilization circuit 30, until the timing chip 21 finishes timing, the timing chip 21 stops sending the timing signal to the ultraviolet sterilization circuit 30, the ultraviolet sterilization circuit 30 turns off the ultraviolet light source, and ultraviolet sterilization is finished. It can be understood that, when the toilet lid or the garbage can lid is closed, the timing chip 21 forms a timing signal and starts timing, so that the ultraviolet sterilization circuit 30 performs timing sterilization according to the timing signal, thereby avoiding ultraviolet rays irradiated by the ultraviolet light source from irradiating human bodies, reducing energy loss of the ultraviolet light source, improving safety of the ultraviolet sterilization system, and reducing electric quantity loss.
As another example, if during the timing process of the timing chip 21, the toilet lid or the garbage can lid is opened, that is, the angle switch is closed, the closing control signal is triggered, the timing chip 21 stops sending the timing signal to the ultraviolet sterilization circuit 30, the ultraviolet sterilization circuit 30 closes the ultraviolet light source, and the ultraviolet sterilization is ended in advance, that is, the ultraviolet light source is closed along with the opening of the toilet lid or the garbage can lid, until the toilet lid or the garbage can lid is closed again, that is, the angle switch is opened, the opening control signal is triggered, the ultraviolet light source is turned on again, and the timing chip 21 starts timing again, so that the ultraviolet light can be prevented from irradiating the human body, and the safety of the ultraviolet sterilization system can be improved.
In the present embodiment, the switch timing circuit 20 includes a control switch Key and a timing chip 21 connected to the control switch Key, the control switch Key is capable of forming a control signal under a specific condition, so that the timing chip 21 is used for forming a timing signal according to the control signal; the ultraviolet sterilization circuit 30 performs sterilization at regular time according to the timing signal, so that when a user uses the ultraviolet sterilization device, ultraviolet rays irradiated by the ultraviolet light source can be prevented from irradiating a human body, and the safety of the ultraviolet sterilization system can be improved.
In one embodiment, as shown in fig. 1, the power management circuit 10 includes a charging and discharging circuit 11 and a power management chip 12; the charging and discharging circuit 11 is connected with the power management chip 12 and the switch timing circuit 20; and the power management chip 12 is connected with the ultraviolet sterilization circuit 30.
Specifically, the power management circuit 10 includes a charge and discharge circuit 11 and a power management chip 12. And the charging and discharging circuit 11 is connected with the power management chip 12 and the switch timing circuit 20, can be charged through the power management chip 12 and supplies power to the power management chip 12 and the switch timing circuit 20, so that the convenience and the application range of the ultraviolet sterilization system are improved. And the power management chip 12 is connected with the ultraviolet sterilization circuit 30, and when the charging and discharging circuit 11 is charged, the power management chip 12 charges the charging and discharging circuit 11 through an external power supply. When the charging and discharging circuit 11 discharges, the discharging voltage of the charging and discharging circuit 11 is converted into the power voltage required by the ultraviolet light source in the ultraviolet sterilization circuit 30. For example, the discharge voltage of the charge/discharge circuit 11 is boosted or reduced to obtain the power supply voltage required for the ultraviolet light source.
In the present embodiment, the power management circuit 10 includes a charging and discharging circuit 11 and a power management chip 12; the charging and discharging circuit 11 is connected with the power management chip 12 and the switch timing circuit 20, can be charged through the power management chip 12 and supplies power to the power management chip 12 and the switch timing circuit 20, so that the convenience and the application range of the ultraviolet sterilization system are improved; the power management chip 12 is connected to the ultraviolet sterilization circuit 30, and can perform voltage conversion on the discharge voltage of the charge and discharge circuit 11 to adapt to different ultraviolet light sources in the ultraviolet sterilization circuit 30.
In one embodiment, as shown in fig. 1, the charging and discharging circuit 11 includes a charging and discharging battery BAT and an external charger Vcc; the positive pole of the charge-discharge battery BAT is connected with the first end of the switch timing circuit 20 and the power management chip 12, and the negative pole is connected with the grounding end; and the external charger Vcc is connected with the second end of the power management chip 12.
Specifically, the charge and discharge circuit 11 includes a charge and discharge battery BAT and an external charger Vcc. The positive electrode of the charge-discharge battery BAT is connected with the switch timing circuit 20 and the first end of the power management chip 12, is externally connected with a charger Vcc and is connected with the second end of the power management chip 12; when the charge and discharge battery BAT is sufficient in electric quantity, the switch timing circuit 20 and the power management chip 12 are powered, and the power management chip 12 performs voltage conversion on the discharge voltage of the charge and discharge battery BAT to convert the discharge voltage into the power voltage required by the ultraviolet light source in the ultraviolet sterilization circuit 30; when the charge/discharge battery BAT is insufficient in electric quantity, the external charger Vcc charges the charge/discharge battery BAT through the power management chip 12.
In this embodiment, the charging and discharging circuit 11 includes a charging and discharging battery BAT and an external charger Vcc; the positive pole of the charge-discharge battery BAT is connected with the first end of the switch timing circuit 20 and the power management chip 12, and the negative pole is connected with the grounding end; the external charger Vcc is connected with the second end of the power management chip 12, so that the power supply to the ultraviolet sterilization system by the commercial power is avoided, and the convenience and the application range of the ultraviolet sterilization system are improved.
In an embodiment, as shown in fig. 1, the charging and discharging circuit 11 further includes a first filter capacitor C1 and a second filter capacitor C2; one end of the first filter capacitor C1 is connected to the first end of the power management chip 12, and the other end is connected to the ground terminal; one end of the second filter capacitor C2 is connected to the second end of the power management chip 12, and the other end is connected to the ground.
Specifically, one end of the first filter capacitor C1 is connected to the first end of the power management chip 12, and when the external charger Vcc supplies power to the power management chip 12, the first filter capacitor C1 can filter the voltage input by the external charger Vcc, thereby improving the stability of the power management chip 12. One end of the second filter capacitor C2 is connected to the second end of the power management chip 12, and when the power management chip 12 charges the charge/discharge battery BAT, the voltage output by the power management chip 12 is filtered, so as to improve the stability of the charge/discharge battery BAT during the charging process.
In this embodiment, one end of the first filter capacitor C1 is connected to the first end of the power management chip 12, and the other end is connected to the ground end; one end of the second filter capacitor C2 is connected to the second end of the power management chip 12, and the other end is connected to the ground, so as to improve the stability of the power management chip 12 and the ultraviolet sterilization circuit 30.
In one embodiment, as shown in fig. 1, the control switch Key is an angle switch.
In this embodiment, the control switch Key may be an angle switch, and when the ultraviolet sterilization system is applied to the ultraviolet sterilization apparatus, the angle switch is convenient for forming the control signal. For example, the angle switch is mounted on the toilet lid or the garbage bin lid, and when the toilet lid or the garbage bin lid is opened or closed, the control signal can be triggered, so that the usability of the ultraviolet sterilization system is improved.
In one embodiment, as shown in fig. 1, the uv sterilizing circuit 30 includes a driving resistor R1, a control switch Q1 and a uv sterilizing lamp D; the driving resistor R1 is connected with the timing chip 21 and the control switch tube Q1; the control switch tube Q1 is connected with the ultraviolet germicidal lamp D; and the ultraviolet germicidal lamp D is connected with the third end of the power management chip 12.
Specifically, the control switch Q1 is specifically a MOS transistor or a triode. Preferably, the control switch Q1 is a MOS transistor.
As an example, the control switch Q1 is a MOS transistor, one end of the driving resistor R1 is connected to the timing chip 21, the other end is connected to the gate of the MOS transistor, the source of the MOS transistor is connected to the ultraviolet germicidal lamp D, and the drain of the MOS transistor is connected to the ground; and the ultraviolet germicidal lamp D is connected with the third end of the power management chip 12. When the timing chip 21 sends a timing signal to the gate of the MOS transistor, the MOS transistor is turned on, and the power management chip 12 supplies power to the ultraviolet germicidal lamp D, so that the ultraviolet germicidal lamp D performs ultraviolet sterilization. When the timing chip 21 stops sending timing signals to the grid electrode of the MOS tube, the MOS tube is cut off, the ultraviolet sterilizing lamp D is turned off, and ultraviolet sterilization is finished.
As another example, the number of the ultraviolet germicidal lamps D is one or more. The plurality of ultraviolet germicidal lamps D may be arranged in series or in parallel between the power management chip 12 and the control switch Q1.
In the embodiment, the driving resistor R1 is connected with the timing chip 21 and the control switch tube Q1; the control switch tube Q1 is connected with the ultraviolet germicidal lamp D; the ultraviolet sterilizing lamp D is connected with the third end of the power management chip 12 and can perform ultraviolet sterilization according to the timing signal of the timing chip 21, so that potential safety hazards of ultraviolet rays to a human body are avoided, and the safety of an ultraviolet sterilizing system is improved.
In one embodiment, as shown in fig. 1, the ultraviolet sterilization circuit 30 further includes a current limiting resistor R2; one end of the current limiting resistor R2 is connected with the control switch tube Q1, and the other end is connected with the ground terminal.
In this embodiment, the control switch Q1 may be a MOS transistor. The ultraviolet sterilization circuit 30 further includes a current limiting resistor R2, wherein one end of the current limiting resistor R2 is connected to the drain of the MOS transistor, and the other end is connected to the ground. When the MOS transistor is turned on, the current limiting resistor R2 limits the current of the ultraviolet sterilization circuit 30 to adjust the ultraviolet intensity of the ultraviolet sterilization lamp D in the ultraviolet sterilization circuit 30, so that the ultraviolet sterilization system can be applied to different scenes.
In one embodiment, as shown in fig. 1, the uv sterilization system includes a third filter capacitor C3 and a fourth filter capacitor C4; one end of the third filter capacitor C3 is connected to the fourth end of the power management chip 12, and the other end is connected to the ground end; one end of the fourth filter capacitor C4 is connected to the charge and discharge circuit 11, and the other end is connected to the ground.
In this embodiment, one end of the third filter capacitor C3 is connected to the fourth end of the power management chip 12, and is used for filtering the power voltage when the power management chip 12 outputs the power voltage to the ultraviolet sterilization circuit 30, so as to improve the stability of the ultraviolet sterilization circuit 30. One end of the fourth filter capacitor C4 is connected to the charge and discharge circuit 11, and the other end is connected to the ground terminal, so that when the charge and discharge circuit 11 supplies power to the timing chip 21, the voltage output by the charge and discharge circuit 11 is filtered, thereby improving the stability of the timing chip 21.
In one embodiment, the power management chip 12 includes a charge management circuit and a boost conversion circuit; the charging management circuit is connected with an external charger Vcc and a charging and discharging battery BAT; and the boost conversion circuit is connected with the charge-discharge battery BAT and the ultraviolet sterilization circuit 30.
In this embodiment, the charging management circuit is connected to the external charger Vcc and the charging/discharging battery BAT, and charges the charging/discharging battery BAT when the charging/discharging battery BAT is insufficient in power; and the boost conversion circuit is connected with the charge-discharge battery BAT and the ultraviolet sterilization circuit 30 and is used for performing voltage conversion on the discharge voltage of the charge-discharge battery BAT to convert the discharge voltage into power supply voltage required by an ultraviolet light source in the ultraviolet sterilization circuit 30, so that the phenomenon that the power is directly supplied to the ultraviolet sterilization system by mains supply is avoided, and the convenience and the application range of the ultraviolet sterilization system are improved.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. An ultraviolet sterilization system is characterized by comprising a power supply management circuit, a switch timing circuit and an ultraviolet sterilization circuit;
the switch timing circuit is connected with the power management circuit and comprises a control switch and a timing chip connected with the control switch, wherein the control switch is used for forming a control signal, and the timing chip is used for forming a timing signal according to the control signal;
the ultraviolet sterilization circuit is connected with the timing chip and the power management circuit and is used for performing timing sterilization according to the timing signal.
2. The UV sterilization system of claim 1, wherein the power management circuit comprises a charge and discharge circuit and a power management chip;
the charging and discharging circuit is connected with the power management chip and the switch timing circuit;
and the power supply management chip is connected with the ultraviolet sterilization circuit.
3. The UV sterilization system of claim 2, wherein the charge-discharge circuit comprises a charge-discharge battery and an external charger;
the positive pole of the charge-discharge battery is connected with the switch timing circuit and the first end of the power management chip, and the negative pole of the charge-discharge battery is connected with the grounding end;
and the external charger is connected with the second end of the power management chip.
4. The UV sterilization system of claim 3, wherein said charge and discharge circuit further comprises a first filter capacitor and a second filter capacitor;
one end of the first filter capacitor is connected with the first end of the power management chip, and the other end of the first filter capacitor is connected with a grounding end;
and one end of the second filter capacitor is connected with the second end of the power management chip, and the other end of the second filter capacitor is connected with the grounding end.
5. The uv sterilization system of claim 1, wherein said control switch is an angle switch.
6. The UV sterilization system of claim 2, wherein the UV sterilization circuit comprises a driving resistor, a control switch tube and a UV sterilization lamp;
the driving resistor is connected with the timing chip and the control switch tube;
the control switch tube is connected with the ultraviolet germicidal lamp;
and the ultraviolet germicidal lamp is connected with the third end of the power management chip.
7. The uv sterilization system of claim 6, wherein said uv sterilization circuit further comprises a current limiting resistor;
one end of the current-limiting resistor is connected with the control switch tube, and the other end of the current-limiting resistor is connected with the grounding end.
8. The uv sterilization system of claim 2, wherein said uv sterilization system comprises a third filter capacitor and a fourth filter capacitor;
one end of the third filter capacitor is connected with the fourth end of the power management chip, and the other end of the third filter capacitor is connected with a grounding end;
one end of the fourth filter capacitor is connected with the charging and discharging circuit, and the other end of the fourth filter capacitor is connected with the grounding end.
9. The UV sterilization system of claim 3, wherein the power management chip comprises a charge management circuit and a boost converter circuit;
the charging management circuit is connected with the external charger and the charging and discharging battery;
and the boost conversion circuit is connected with the charge-discharge battery and the ultraviolet sterilization circuit.
10. An ultraviolet sterilization apparatus comprising the ultraviolet sterilization system of any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120538401.8U CN215994923U (en) | 2021-03-15 | 2021-03-15 | Ultraviolet sterilization system and ultraviolet sterilization equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120538401.8U CN215994923U (en) | 2021-03-15 | 2021-03-15 | Ultraviolet sterilization system and ultraviolet sterilization equipment |
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| CN215994923U true CN215994923U (en) | 2022-03-11 |
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| CN202120538401.8U Active CN215994923U (en) | 2021-03-15 | 2021-03-15 | Ultraviolet sterilization system and ultraviolet sterilization equipment |
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