WO2023056680A1

WO2023056680A1 - A uv germicidal lamp

Info

Publication number: WO2023056680A1
Application number: PCT/CN2021/129712
Authority: WO
Inventors: Huabing LAN; Brian Eustace
Original assignee: Cob Technology Limited
Priority date: 2021-10-08
Filing date: 2021-11-10
Publication date: 2023-04-13

Abstract

The utility model is involved with the technical field of germicidal lamp, disclosing a safely filtered ultraviolet sterilization lamp with stable output of narrow band (200-230nm). The hollow hinged housing (101) has 1 st opening on one side, and 2 nd and 3 rd openings on the other side. The base plate (102) is capped on the 1 st opening of housing (101). At least one UVC tube component (104) which is removable is set in the 2 nd opening of housing (101), with the coated glass lens in the front end of tube component. The smart Wi-Fi dimming switch (106) to adjust the output power of the UVC tube component (104) is set in the 3 rd opening of housing (101).

Description

A UV germicidal lamp

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the benefit of priority from Chinese Provisional Application No. 202122423556. X, filed October 8, 2021

Technical field

The utility model is involved with technical field of germicidal lamp, specifically with UV type.

Technical background

Up to now most technology for disinfecting germs airborne and surface in commercial and medical establishments has been the use of UVGI lamps to create UV-C energy with an electrical discharge through a low-pressure gas (including mercury vapor) enclosed in a soft glass or quartz tube, similar to fluorescent lamps. Roughly 95%of the energy produced by these lamps is emitted at a near-optimal wavelength of 253.7 nm. Conventional 254nm germicidal UV light, the kind that is used to disinfect unoccupied spaces like hospital operating rooms, penetrates the live layer of skin and leads to lupus or bums probably. It is unsafe for exposure to people.

Thus, the urgent issue is how to improve the germicidal performance of short wavelength lamp in the public and usage safety.

Summary

The present disclosure in accordance with one embodiment provides a safely filtered UV germicidal lamp of stable narrowband output.

BRIEF DESCRIPTION OF THE DRAWINGS

Please check further explanation with illustration:

Fig. 1 shows stereogram.

Fig. 2 shows sectional view.

Fig. 3 shows one explosive view.

Fig. 4 shows the other explosive view.

Fig. 5 shows another explosive view.

Fig. 6 shows control circuit theory view.

Technical solution is to construct a UV germicidal lamp with:

The hollow housing has 1 st opening on one side, and 2nd and 3rd openings on the other side.

The base plate is capped on the 1 st opening of housing.

At least one UVC tube component which is removable is set in the 2nd opening of housing, with the coated glass lens in the front end of tube component.

The smart dimming Wi-Fi switch to adjust the output power of UVC tube component is set in the 3rd opening of housing.

In some embodiment, the coating for the quartz glass lens in front of the UVC tube component is used for filtering 221～222nm UV light in narrow band 200～230nm.

In some embodiment, the removable lamp bracket with opening is set in the inner side of 2nd housing opening. The tube component is inserted into the opening of bracket and extends to the housing.

In some embodiment, extending outward convex ribs are set on both sides of tube component.

In some embodiment, the convex ribs are set in the referred location symmetrically or asymmetrically.

In some embodiment, the interlock switch set in the housing is linked with tube component electrically.

In some embodiment, the transfer power supply set in the housing is linked with smart Wi-Fi dimming switch, tube component and interlock switch electrically.

In some embodiment, the smart dimming switch has the WIFI/Cloud dimmer and the receiving module of app based IOS/android, which realizes the remote control according to the exterior signal.

In some embodiment, the array of vents set on both sides of the housing is used for convection dissipation for the tube component.

It contains housing with 2 ^nd and 3 ^rd opening on the other side, base plate capped on the 1 ^st opening of housing, removable tube component set in the 2 ^nd opening of housing with the coated lens in the front end and smart Wi-Fi dimming switch to adjust output power set in the 3 ^rd housing opening. Compared with the current technology, on the one hand, the tube component is removable in the housing, which ensures faster maintenance or replacement even in the confined space. On the other hand, the device with smart dimming enables 222nm to control the human dosage per hour by adjusting power level from 2-20Watts with smart phone connected app, so as to protect the eye or skin with the suitable power.

Specific implementation mode

For better understanding of technical features, purpose and effect, specific embodiment mode is illustrated here.

In the 1 ^st case as shown in picture 1-5, the UV germicidal lamp (10) includes housing (101) , base plate (102) , bracket (103) , tube component (104) and dimming switch (106) .

Specifically, the hollow housing (101) shaped in cuboid or cube holds bracket (103) , tube component (104) and others.

The square in the upper of housing (101) is the 1 st opening (101 a) on the one side.

The 2nd (10lb) and 3 ^rd (101c) adjacent opening are in the bottom of housing (101) on the other side.

Relative square enclosed structure forms when the base plate (102) with many holes (unshown) is fixed to the 1 ^st opening (101a) through screw (unshown) .

Opening in juxtaposed groups on the side of tube component (104) is used for 222nm UV light output.

It’s specially noted that harmful wavelength above 230nm cannot be removed without the filter.

The tube component (104) is removable in the 2 ^nd opening (101b) by hinged, clamping or jaw installation.

At least one layer of coatings set inside/outside/into the glass tube (unshown) in the front end of the tube component (104) are used for filtering narrowband 222nm UV in the range of 200-230nm to improve the reliability and safety.

UV duty ratio/output power (2-20W/2-30W/2-40W/2-50W) is adjusted by dimming switch (106) in the 3rd opening (101c) with slider or screw on the power supply or remotely controlled by smart phone or tablet for different scenes.

The tube component is removable in the housing, which ensures faster maintenance or replacement even in the confined space. On the other hand, the coated tube with dimming switch enables 222nm to not only kill the bacteria/pathogen like 254nm, but also protect the eye or skin with the suitable power to improve the safety.

In some embodiment, square removable bracket (103) with a opening (103a) in the middle is fixed in the inner side of 2 ^nd opening (101b) with screw (108) to improve the installation reliability of tube component (104) .

The side without opening of tube component (104) is embedded in the bracket opening (103a) , and left and right sides are clamped in the bracket opening.

In some embodiment, extending outward convex ribs are set in the middle of left and right sides of tube component (104) in the symmetrically or asymmetrically to improve the installation reliability of tube component (104) .

The base plate for the tube component (104) uses the hollow aluminum panel for heat dissipation and tube (104a) life improvement.

When tube (104a) fails, replacement can be achieved by taking out and in the tube from the tube opening between the dissipated base plates, without removing the screw.

In some embodiment, interlock switch (107) in the side wall of housing (101) is linked with tube component (104) electrically to improve the reliability to turn off the power when in maintenance. Thus, no screw needs to be removed free from high voltage shock, faster and more convenient.

In some embodiment, transfer power supply (105) is set in the housing (101) , with screw fixed on the base plate (102) and output terminal linked with dimming switch (106) , tube component (104) and interlock switch (107) electrically, to improve working stability.

In some embodiment, to improve the smart effect, Wi-Fi/cloud dimmer and receiving module of switch/motion sensor is added in the dimming switch (106) to remote control the lamp according to the exterior signal. The user can adjust the daily working time with mobile/tablet and power with manual or remote dimmer, to meet the max exposure dose required by IEC62471 or suggested by ACGIH.

Frequent switch doesn’t harm the usage life. The max output power is turn on/off instantaneously to reduce the virus, bacteria, and spores effectively.

In some embodiment, to improve heat dissipation for tube component (104) , vent array (101d) is set in the left and right sides of housing (101) for convection.

In some embodiment, shown in the Pic. 6, control circuit (100) includes smart switch (110) integrating at least one IR motion sensor (which senses/measures thermal image information on the body surface temperature, and triggers/controls back circuit on-off with IR’s physical properties) and Wi-Fi/cloud dimmer, interlock switch (120) and power supply (130) for tube (104a) .

More specifically, the input of smart switch (110) is connected with the AC output electrically, and the signal output is connected with the input of power supply (130) to receive the smart switch output control signal. The input of interlock (120) is connected with the negative AC output, and the output is connected with power supply (130) ’s input. That’s to say, smart switch (110) and interlock switch (120) control power supply (130) signal respectively. Only when both are on will the tube component (104) receive the power signal.

The transformer output runs at about 5000-10000V, 30mA 35-40kHz without ballast. The power supply can pass UL/CE with ground protection, open circuit protection, and optional built-in Wi-Fi dimming switch.

The specific embodiment above serves as the examples and don’t exclude other variants under the utility model objective and claim protection.

Claims

An UV germicidal lamp is featured with:

The hollow housing has 1st opening on one side, and 2nd and 3rd openings on the other side.

The base plate is capped on the 1st opening of housing.

At least one UVC tube component which is removable is set in the 2nd opening of housing, with the coated glass lens in the front end of tube component.

The smart Wi-Fi dimming switch to adjust the output power with no flicker of the UVC tube component is set in the 3rd opening of housing.
According to the claiml, the lamp is featured with:

A coating for the glass lens in front of the UVC tube component is used for filtering a peak of 221-222nm UV light in a narrow band 200～230nm.
According to the claim2, the lamp is featured with:

The removable lamp bracket with opening is set in the inner side of 2nd housing opening. The tube component is inserted into the opening of bracket and extends to the housing.
According to the claim 3, the lamp is featured with:

Extending outward convex ribs are set on both sides of tube component.
According to the claim 4, the lamp is featured with:

The convex ribs are set in the referred location symmetrically or asymmetrically.
According to the claim 5, the lamp is featured with:

The interlock mechanical/electrical switch set in the housing is linked with tube component electrically.
According to the claim 6, the lamp is featured with:

The transfer power supply set in the housing is linked with smart wifi dimming switch on AC input to power supply, tube component and interlock switch electrically.
According to the claim 7, the lamp is featured with:

The smart dimming switch has the WIFI/Cloud dimmer and the receiving module of switch/motion sensor, which realizes the remote control according to the exterior signal through internet on app for IOS/Android. It can be switched on and off by app anywhere in the world.
According to the claim 1-7, the lamp is featured with:

The array vent set in both sides of housing is used for convection dissipation for the tube component.