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    ELECTRON OVERFLOW OF AIGaN DEEP ULTRAVIOLET LIGHT EMITTING DIODES
    1.
    发明公开
    ELECTRON OVERFLOW OF AIGaN DEEP ULTRAVIOLET LIGHT EMITTING DIODES 审中-公开

    公开(公告)号：US20240304754A1

    公开(公告)日：2024-09-12

    申请号：US18569162

    申请日：2022-06-13

    Applicant: THE REGENTS OF THE UNIVERSITY OF MICHIGAN

    Inventor： Ayush PANDEY ,  Zetian MI

    IPC: H01L33/14 ,  A61L2/10 ,  A61L2/26 ,  A61L9/20 ,  B82Y20/00 ,  C02F1/32 ,  H01L33/06 ,  H01L33/32

    CPC classification number: H01L33/145 ,  A61L2/10 ,  A61L2/26 ,  A61L9/20 ,  C02F1/325 ,  H01L33/06 ,  H01L33/325 ,  A61L2202/11 ,  A61L2209/12 ,  B82Y20/00 ,  C02F2201/3222 ,  C02F2303/04

    Abstract: Various embodiments are based on the study of the design, epitaxy, and performance characteristics of deep ultraviolet (UV) AlGaN light emitting diodes (LEDs). By combining tunnel junction and polarization-engineered AlGaN electron blocking layer, a maximum external quantum efficiency and wall-plug efficiency of 0.35% and 0.21%, respectively, were measured for devices operating at approximately 245 nanometers (nm), which are over one order of magnitude higher than previously reported tunnel junction devices at this wavelength. Severe efficiency droop, however, was measured at very low current densities (approximately 0.25 A/cm2), which, together with the transverse magnetic (TM) polarized emission, are identified to be the primary limiting factors for the device performance. Detailed electrical and optical analysis further show that the observed efficiency droop is largely due to an electrical effect, instead of an optical phenomenon. Studies based on various embodiments suggest that AlGaN deep UV LEDs with efficiency comparable to InGaN blue-emitting quantum wells can be potentially achieved, if issues related to electron overflow and TM polarized emission are effectively addressed.

    DRINKING WATER DISPENSER WITH ULTRAVIOLET DISINFECTION DEVICE
    3.
    发明公开
    DRINKING WATER DISPENSER WITH ULTRAVIOLET DISINFECTION DEVICE 审中-公开

    公开(公告)号：US20240239691A1

    公开(公告)日：2024-07-18

    申请号：US18564014

    申请日：2021-05-25

    Applicant: Scandinavian Innovation Group Oy

    Inventor： Andrzej PAWLOW ,  Arturs PAVLOVS

    IPC: C02F1/32 ,  B67D3/00

    CPC classification number: C02F1/325 ,  B67D3/0093 ,  B67D2210/00015 ,  C02F2201/3222 ,  C02F2201/3228 ,  C02F2307/10

    Abstract: A drinking water dispenser includes a body, including: an inlet pipe for connecting the external water source, a cold water tank having a lower part filled with water and an upper part in which an air cavity is formed, when the tank is filled with water, a water inlet connected to the inlet pipe, and water outlet connected to an outlet pipe, an outlet valve for dispensing water to consumers, connected to the outlet pipe, and a UV radiation source installed in the cold water tank. The water inlet is made in a form of a vertical pipe, placed in the cold water tank, and having an open upper end and a lower end connected to the inlet pipe; and the UV radiation source is installed in the upper part of the cold water tank above the open upper end of the vertical pipe of the water inlet.

    UV LED ASSEMBLY AND WATER PURIFIER EQUIPPED WITH SAME
    6.
    发明公开
    UV LED ASSEMBLY AND WATER PURIFIER EQUIPPED WITH SAME 审中-公开

    公开(公告)号：US20230373821A1

    公开(公告)日：2023-11-23

    申请号：US17836960

    申请日：2022-06-09

    Applicant: Kyung Ah SEO

    Inventor： Kyung Ah SEO

    IPC: C02F1/32 ,  A61L2/26 ,  A61L2/10

    CPC classification number: C02F1/325 ,  A61L2/26 ,  A61L2/10 ,  C02F2303/04 ,  C02F2201/3222 ,  A61L2202/11

    Abstract: Disclosed is an UV LED assembly and a water purifier capable of killing harmful bacteria existed in a water tank. The water purifier includes a water purifier including a through-hole formed through a side wall of a water tank such that the inside and outside of the water tank communicate with each other; a body pipe inserted in the through-hole to be installed inside and outside the water tank, in which the end of the body pipe inside the water tank may be closed; and a stop nut seating the UV LED sub-assembly in the hollow section by being thread-fastened to a side of the end of the body pipe disposed outside the water tank after a body of a UV LED sub-assembly, which is integrated with urethane, is inserted and fitted in a hollow section of the body pipe from the outside of the water tank.

    Low power liquid purifier
    8.
    发明授权
    Low power liquid purifier 有权

    公开(公告)号：US11786070B2

    公开(公告)日：2023-10-17

    申请号：US17222117

    申请日：2021-04-05

    Applicant: BEDFORD SYSTEMS LLC

    Inventor： Joseph Damigella

    IPC: A47J31/60 ,  C02F1/32 ,  A47J31/46

    CPC classification number: A47J31/60 ,  A47J31/46 ,  C02F1/325 ,  C02F2201/3222 ,  C02F2301/028 ,  C02F2303/04 ,  C02F2307/12

    Abstract: Described herein includes sample liquid purification apparatus, systems, and techniques of use. The purification apparatus generally can operate to reduce a temperature of a precursor liquid within a beverage machine or appliance. For example, a thermally conductive body can define a heat sink having a tortuous path for propagation of the precursor therethough, facilitating temperature reduction. The purification apparatus can further generally operate to sanitize or otherwise reduce a level of contaminants in the precursor liquid. For example, an energy source, such as a light emitting diode, can be arranged or integrated with the thermally conductive body to emit ultraviolet radiation toward the precursor liquid within the thermally conductive body.

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