Portable sterilization system and method

Abstract

To provide system and method for portable sterilization.SOLUTION: A system and a method for portable sterilization include a sterilization head including an ultraviolet (UV) lamp. The UV lamp is configured to emit UV light having a wavelength of 200-230 nm in order to sterilize a surface.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This application is related to and claims the benefit of priority to U.S. Provisional Patent Application No. 63 / 021,984, entitled "Portable Sanitizing Systems and Methods," filed May 8, 2020, which is incorporated herein by reference in its entirety.

[0002] SUMMARY OF THE INVENTION Embodiments of the present disclosure generally relate to sterilization systems that may be used to sterilize structures and areas within vehicles such as, for example, commercial aircraft. [Background technology]

[0003] Vehicles such as commercial aircraft are used to transport passengers between various points, and systems are currently being developed that use, for example, ultraviolet (UV) light to sterilize or disinfect surfaces within the aircraft.

[0004] To disinfect the surface of a structure, known UV light disinfection methods irradiate the structure with broad-spectrum UVC light. However, UVC light typically takes a significant amount of time (e.g., 3 minutes) to kill many bacteria. Also, many bacteria may not be vulnerable to UVC light, meaning they may be able to withstand exposure to UVC light.

[0005] Also, some bacteria may be resistant to UVC light. For example, with continued exposure over time, certain species of bacteria may become resistant to UVC light and be able to withstand exposure to UVC light, even though UVC light may initially kill them.

[0006] Additionally, direct exposure to certain types of UV light can be dangerous to humans. For example, some known UV systems emit UV light with a wavelength of 254 nm, which can be dangerous to humans. As such, some known UV light disinfection systems and methods operate in unoccupied areas. For example, a UV light disinfection system in a restroom can be activated when no one is in the restroom and deactivated when someone is in the restroom.

[0007] Additionally, known UV light disinfection systems are typically large and bulky, often requiring a fixed, stationary base. Summary of the Invention [Problem to be solved by the invention]

[0008] There is a need for a system and method that effectively disinfects surfaces within the interior passenger compartment of a vehicle. Additionally, there is a need for a portable, compact, easy-to-use, and safe system and method that uses UV light to sterilize surfaces within the interior passenger compartment. [Means for solving the problem]

[0009] In light of this need, some embodiments of the present disclosure provide a portable sterilization system that includes a sterilization head that includes an ultraviolet (UV) lamp. The UV lamp is configured to emit UV light with a wavelength of 200 nm to 230 nm to sterilize surfaces. In at least one embodiment, the UV lamp is configured to emit UV light with a wavelength of 222 nm.

[0010] In at least one embodiment, the wand assembly includes a sterilization head. In at least one embodiment, the wand assembly further includes a handle coupled to the sterilization head. The wand assembly may include a coupler that movably couples the handle to the sterilization head. For example, the sterilization head is configured to move linearly or pivotally, or both, relative to the handle. Additionally, the handle may be configured to move linearly.

[0011] In at least one embodiment, the germicidal head includes a shroud that holds the UV lamps, hi at least one embodiment, the shroud has one or more openings configured to allow air to enter the shroud.

[0012] In at least one embodiment, a reflector is secured to the underside of the shroud and is configured to reflect a portion of the UV light emitted by the UV lamp.

[0013] In at least one embodiment, a bumper may be secured to the exposed lower peripheral edge of the shroud.

[0014] In at least one embodiment, the portable sterilization system includes a backpack assembly and a hose connecting the backpack assembly to the sterilization head. In at least one embodiment, the backpack assembly includes an airflow device configured to generate airflow to cool the UV lamps, to pump air through the sterilization head, or to remove ozone from the sterilization head. The at least one air filter may be configured to filter the air pumped through the sterilization head. The backpack assembly may include one or more batteries to power the UV lamps.

[0015] In at least one embodiment, the sterilization head further comprises a reflector and a cover plate, the UV lamp being secured within an interior chamber defined between the reflector and the cover plate.

[0016] Some embodiments of the present disclosure provide a portable sterilization method comprising: irradiating a surface with ultraviolet (UV) light having a wavelength of 200 nm to 230 nm from a sterilization head including a UV lamp; and sterilizing the surface by said irradiating. [Brief explanation of the drawings]

[0017] [Figure 1] 1 shows a perspective view of a portable sterilization system worn by a user, according to an embodiment of the present disclosure. FIG. [Figure 2] FIG. 1 illustrates a side and top perspective view of a wand assembly according to an embodiment of the present disclosure. [Figure 3] FIG. 3 shows a rear perspective view of the wand assembly of FIG. 2. [Figure 4] 3 shows a side perspective view of the wand assembly of FIG. 2. [Figure 5] 1 shows a perspective view of a portable sterilization system in a small, deployed position according to an embodiment of the present disclosure. FIG. [Figure 6] FIG. 1 shows a perspective view of a portable sterilization system with a sterilization head in an extended position according to an embodiment of the present disclosure. [Figure 7] FIG. 1 shows a perspective view of a portable sterilization system with a sterilization head in an extended position and a handle in an extended position according to an embodiment of the present disclosure. [Figure 8] FIG. 1 shows a perspective view of a portable sterilization system with the sterilization head rotated relative to the handle, according to an embodiment of the present disclosure. [Figure 9] FIG. 1 illustrates an end perspective view of a UV lamp and reflector of a germicidal head according to an embodiment of the present disclosure. [Figure 10] FIG. 10 shows another end perspective view of a UV lamp and reflector of a germicidal head according to an embodiment of the present disclosure. [Figure 11] FIG. 10 illustrates yet another end perspective view of a UV lamp and reflector of a germicidal head according to an embodiment of the present disclosure. [Figure 12] FIG. 1 shows a top perspective view of the sterilization head. [Figure 13] FIG. 1 shows a bottom perspective view of the sterilization head. [Figure 14]14 shows an axial cross-section of the sterilization head taken along line 14-14 of FIG. 12. [Figure 15] 1 illustrates an end perspective view of a UV lamp secured to a mounting bracket according to an embodiment of the present disclosure. [Figure 16] 1 illustrates an exploded perspective view of a backpack assembly according to an embodiment of the present disclosure. [Figure 17] FIG. 1 illustrates a front perspective view of a harness coupled to a backpack assembly according to an embodiment of the present disclosure. [Figure 18] 1 shows the ultraviolet light spectrum. [Figure 19] 1 illustrates a front perspective view of an aircraft according to an embodiment of the present disclosure. [Figure 20A] 1 illustrates a top plan view of an interior cabin of an aircraft, according to an embodiment of the present disclosure. [Figure 20B] 2 illustrates another top plan view of an interior cabin of an aircraft, according to an embodiment of the present disclosure. [Figure 21] 1 illustrates an interior perspective view of an interior cabin of an aircraft, according to an embodiment of the present disclosure. [Figure 22] 1 illustrates a perspective interior view of a lavatory in an interior cabin of an aircraft, according to an embodiment of the present disclosure. [Figure 23] 1 shows a flowchart of a portable sterilization method according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0018] The foregoing summary, as well as the following detailed description of specific embodiments, will be better understood when read in conjunction with the accompanying drawings. As used herein, elements or steps enumerated in the singular and preceded by the words "a" or "an" do not necessarily exclude a plurality of elements or steps. Furthermore, the use of "one embodiment" is not intended to be interpreted as excluding the existence of additional embodiments that also incorporate the recited features. Furthermore, unless expressly stated to the contrary, embodiments "comprising" or "having" an element or elements having a particular condition can include additional elements that do not have that condition.

[0019] Some embodiments of the present disclosure provide sterilization systems and methods that include ultraviolet (UV) lamps (e.g., excimer lamps) that emit UV light in the far-UV light spectrum, such as at 222 nm wavelength, which deactivates (e.g., kills) germs (e.g., viruses and bacteria) without posing a risk to humans. The UV lamps can be used in interior passenger compartments to detoxify and kill pathogens. Embodiments of the present disclosure provide safer and more effective sanitation than some known UV systems. The UV lamps may be used in portable or stationary sterilization systems. For example, operating a UV lamp to emit germicidal UV light at a wavelength of 222 nm may be used in portable or stationary systems.

[0020] Some embodiments of the present disclosure provide a portable disinfection system for disinfecting surfaces, such as within the interior passenger compartment of a vehicle. The portable disinfection system includes a wand assembly and a backpack assembly. The wand assembly includes a housing, a UV lamp, a reflector, a mount for securing the UV lamp to the housing, an inlet for allowing air to be directed into the UV lamp, and an extension handle configured to extend the length of the wand assembly. The backpack assembly includes a body or housing, a power source, one or more batteries (such as rechargeable batteries), a plug for charging the backpack, a blower, a carbon filter, an exhaust vent, and a harness that allows a user to wear the portable disinfection system.

[0021] 1 shows a perspective view of a portable sterilization system 100 worn by a user 101, according to an embodiment of the present disclosure. The portable sterilization system 100 includes a wand assembly 102 coupled to a backpack assembly 104 that is removably secured to the user by a harness 105. The wand assembly 102 includes a sterilization head 106 coupled to a handle 108. In at least one embodiment, the sterilization head 106 is movably coupled to the handle 108 by a coupler 110.

[0022] 1, wand assembly 102 is in a stowed position in which it is removably secured to a portion of backpack assembly 104 by, for example, one or more rails, clips, latches, belts, straps, etc.

[0023] 2 shows a side and top perspective view of a wand assembly 102 according to an embodiment of the present disclosure. The disinfectant head 106 is coupled to a handle 108 via a coupler 110. The disinfectant head 106 includes a shroud 112 having an outer cover 114 extending from a proximal end 116 to a distal end 118. The shroud 112 contains a UV lamp, as described herein.

[0024] A port 120 extends from the proximal end 116. The port 120 couples to a hose 122, which in turn couples to the backpack assembly 104 (see FIG. 1). The hose 122 includes an electrical cord, cable, wire, etc. that connects a power source (such as one or more batteries) within the backpack assembly 104 (see FIG. 1) to the UV lamp 140 within the shroud 112. Optionally, the electrical cord, cable, wire, etc. may be external to the hose 122. The hose 122 further includes an air line, such as an air tube, that fluidly couples the interior chamber of the shroud 112 to a blower, vacuum generator, air filter, etc. within the backpack assembly 104.

[0025] Coupler 110 is secured to outer cover 114 of shroud 112, such as near proximal end 116. Coupler 110 may include a fixed beam 124 secured to outer cover 114 by, for example, one or more fasteners, adhesive, or the like. An extension beam 126 extends outwardly from fixed beam 124, thereby spacing handle 108 from shroud 112. A bearing assembly 128 extends from extension beam 126 in the opposite direction from fixed beam 124. Bearing assembly 128 may include one or more bearings, rails, or the like, and may enable handle 108 to move linearly relative to coupler 110 in the direction of arrow A and / or pivot in an arc B about pivot axis 129. Optionally, the fixed beam 124 may include a bearing assembly that allows the sterilization head 106 to move in the direction of arrow A and / or rotate (e.g., pivot) in the direction of arc B in addition to or in place of the handle 108 coupled to the bearing assembly 128 (e.g., the handle 108 may be fixed to the coupler 110).

[0026] In at least one embodiment, the handle 108 comprises a rod, pole, beam, etc. 130, which may be longer than the shroud 112. Optionally, the rod 130 may be shorter than the shroud 112. One or more handgrips 132 are secured to the rod 130. The handgrips 132 are configured to be grasped and held by a user. The handgrips 132 may include ergonomic haptic features 134.

[0027] Optionally, wand assembly 102 may be sized and shaped differently than that shown. For example, in at least one embodiment, handle 108 may be fixed relative to shroud 112. Also, handle 108 may or may not be configured to move relative to itself and / or shroud 112. For example, handle 108 and shroud 112 may be integrally molded and formed as a single unit.

[0028] Figure 3 shows a rear perspective view of the wand assembly 102 of Figure 2. Figure 4 shows a side perspective view of the wand assembly 102 of Figure 2. With reference to Figures 3 and 4, the handle 108 may be pivotally coupled to the coupler 110 via a bearing 136 having a pivot axis 138 that pivotally couples the handle 108 to the coupler 110. The handle 108 may further be configured to move linearly in and out of the bearing 136. For example, the handle 108 may be configured to telescope in and out. Optionally, or alternatively, in at least one embodiment, the handle 108 may include a telescoping body that allows the handle 108 to extend outward and retract inward.

[0029] Figure 5 shows a perspective view of the portable sterilization system 100 in a compact, deployed position, according to an embodiment of the present disclosure. As shown in Figure 5, the wand assembly 102 is detached from the backpack assembly 104 (as shown in Figure 1) and is in the compact, deployed position. A hose 122 connects the wand assembly 102 to the backpack assembly 104. In the compact, deployed position, the sterilization head 106 is fully retracted relative to the handle 108.

[0030] FIG. 6 shows a perspective view of the portable sterilization system 100 with the sterilization head 106 in an extended position, according to an embodiment of the present disclosure. To extend the sterilization head 106 relative to the handle 108, the sterilization head 106 slides outward relative to the handle 108 in the direction of arrow A' (or the handle 108 slides backward relative to the sterilization head 106). As previously described, the sterilization head 106 can move linearly relative to the handle 108 in the direction of arrow A' via the coupler 110. Extending the sterilization head 106 outward, as shown in FIG. 6, allows the portable sterilization system 100 to easily reach distal areas. Alternatively, the sterilization head 106 does not have to move linearly relative to the handle 108.

[0031] 7 shows a perspective view of a portable sterilization system 100 with a sterilization head 106 in an extended position and a handle 108 in an extended position, according to an embodiment of the present disclosure. To achieve a greater reach, the handle 108 may be configured to move linearly, for example via a telescoping portion, to allow the sterilization head 106 to reach further outward. Alternatively, the handle 108 may not be configured to extend or retract.

[0032] In at least one embodiment, the handle 108 may include a lock 109. The lock 109 is configured to be selectively operated to secure the handle 108 in a desired extended (or retracted) position.

[0033] 8 shows a perspective view of the portable sterilization system 100 with the sterilization head 106 rotated relative to the handle 108, according to an embodiment of the present disclosure. As previously described, the sterilization head 106 is configured to rotate relative to the handle 108 via the coupler 110. By rotating the sterilization head 106 relative to the handle 108, the sterilization head 106 can be moved to a desired position, allowing for access to or reaching areas that would be difficult to reach if the sterilization head 106 were rigidly attached to the handle 108. Alternatively, the sterilization head 106 may not be rotatable relative to the handle 108 .

[0034] 9 shows an end perspective view of a UV lamp 140 and a reflector 142 of a sterilization head 106, according to an embodiment of the present disclosure. The UV lamp 140 and the reflector 142 are secured within a shroud 112 (e.g., as shown in FIG. 2) of the sterilization head 106. In at least one embodiment, the reflector 142 is secured to an underside 141 of the shroud 112, such as by one or more adhesives. As another example, the reflector 142 is an integral part of the shroud 112. For example, the reflector 142 may be or provide the underside 141 of the shroud 112. The reflector 142 provides a reflective surface 143 (e.g., formed of Teflon, a mirrored surface, etc.) configured to reflect UV light emitted by the UV lamp 140 outward. In at least one example, the shroud 112 may be or comprise a fiberglass shell, and the reflector 142 may be formed from Teflon with a reflectivity of 98%.

[0035] The reflector 142 may extend along the entire length of the underside 141 of the shroud 112. Optionally, the reflector 142 may extend along less than the entire length of the underside 141 of the shroud 112.

[0036] The UV lamp 140 may extend along the entire length (or substantially along the entire length, such as between end 116 and end 118). The UV lamp 140 is secured to the reflector 142 and / or shroud 112, for example, via one or more brackets. The UV lamp 140 includes one or more sources of UV light radiation, such as one or more light bulbs, light emitting components (e.g., light emitting diodes), etc. In at least one embodiment, the UV lamp 140 is configured to emit UV light in the far UV spectrum, between 200 nm and 230 nm wavelengths. In at least one embodiment, the UV lamp 140 is configured to emit UV light at a wavelength of 222 nm. For example, the UV lamp 140 may be or include a 300 W light bulb configured to emit UV light at a wavelength of 222 nm.

[0037] As shown, the reflector 142 includes flat, upright side walls 144 joined together via a curved top wall 146. The curved top wall 146 may be curved outwardly away from the UV lamp 140. For example, the curved top wall 146 may have a parabolic cross section or profile.

[0038] It has been found that straight, linear sidewalls 144 provide a desired reflection and / or focus of UV light emitted from UV lamps 140 toward and to desired locations. Alternatively, sidewalls 144 do not have to be straight and flat.

[0039] Figure 10 shows an end perspective view of a UV lamp 140 and reflector 142 of a germicidal head according to an embodiment of the present disclosure. The reflector 142 shown in Figure 10 is similar to the reflector 142 shown in Figure 9, except that the side walls 144 may slope outward from a curved top wall 146.

[0040] 11 shows an end perspective view of a UV lamp 140 and reflector 142 of a germicidal head according to an embodiment of the present disclosure. In this embodiment, the side walls 144 may be curved to follow the curvature of the curved top wall 146.

[0041] FIG. 12 shows a top perspective view of the sterilizing head 106. FIG. 13 shows a bottom perspective view of the sterilizing head 106. FIG. 14 shows an axial cross-sectional view of the sterilizing head 106 taken along line 14-14 in FIG. 12. Referring to FIGS. 12-14, the sterilizing head 106 is configured to receive air 150 through one or more openings 152 (or simply open chambers) in the shroud 112. The air 150 is forced into the sterilizing head 106 via a vacuum generator, for example, located within the backpack assembly 104 (shown in FIG. 1). The air 150 is forced into the shroud 112 and cools the UV lamps 140 as it passes over and around them. The air 150 passes through the port 120 and into the hose 122, for example, into an air tube within the hose 122. The air 150 not only cools the UV lamps 140 within the shroud 112, but also removes ozone that may be generated by the operation of the UV lamps 140. The air 150 may be forced through an air filter, such as an activated carbon filter, within the backpack assembly 104.

[0042] In at least one embodiment, the portable sterilization system 100 may include an alternative ozone mitigation system. By way of example, the ozone mitigation system may be located in the shroud 112 or another portion of the system and may include an inert gas bath or a face inert gas system, such as that described in U.S. Pat. No. 10,232,954.

[0043] 13, in particular, a bumper 153 may be secured to the exposed lower peripheral edge 155 of the shroud 112. The bumper 153 may be formed of a resilient material such as rubber, another elastomeric material, open-cell foam, or closed-cell foam. The bumper 153 protects the sterilizing head 106 from damage if the sterilizing head 106 inadvertently contacts a surface. The bumper 153 further protects the surface from damage.

[0044] The openings 152 may be spaced near the bottom of the shroud 112 to avoid direct view of the UV lamps 140. For example, the openings 152 may be located at a lower portion spaced apart from the UV lamps 140.

[0045] 14 , in particular, the sterilization head 106 may include a cover plate 154 below the UV lamps 140. The cover plate 154 may be formed of, for example, glass and may be configured to filter the UV light emitted by the UV lamps 140. The UV lamps 140 may be secured within an interior chamber 156 defined between the reflector 142 and the cover plate 154. In at least one embodiment, the cover plate 154 is or includes a far-UV bandpass filter. For example, the cover plate 154 may be a 222 nm bandpass filter that filters the UV light emitted by the UV lamps 140 to a wavelength of 222 nm. In this manner, the UV light emitted from the sterilization head 106 may be emitted at a wavelength of 222 nm.

[0046] 13 and 14, a rim 157 (such as a 0.020" thick titanium rim) may couple the cover plate 154 to the shroud 112. The rim 157 may distribute impact loads through and / or around it.

[0047] In at least one embodiment, a ranging light emitting diode (LED) 159 may be located proximate the end of the UV lamp 140. The ranging LED 159 may be used, for example, to determine a desired range for the structure to be sterilized. In at least one embodiment, the ranging LED 159 may be located on or within the rim 157 and / or cover plate 154.

[0048] FIG. 15 shows an end perspective view of a UV lamp 140 secured to a mounting bracket or clamp 160, according to an embodiment of the present disclosure. Each end of the UV lamp 140 may be coupled to a mounting bracket or clamp 160, which secures the UV lamp 140 to the shroud 112 (as shown in FIGS. 12-14 ). A buffer, such as a thin sheet of silicone (e.g., 0.040″), may be placed between the end of the UV lamp 140 and the bracket 160. Optionally, the UV lamp 140 may be secured to the shroud 112 by a bracket or clamp of a different size and shape than that shown. As another example, the UV lamp 140 may be secured to the shroud 112 via adhesive, fasteners, or the like.

[0049] 16 shows an exploded perspective view of a backpack assembly 104 according to an embodiment of the present disclosure. The backpack assembly 104 includes a front wall 170 coupled to a rear shell 172, a base 174, and a top cap 176. An interior chamber 178 is defined between the front wall 170, the rear shell 172, the base 174, and the top cap 176. One or more batteries 180, such as rechargeable lithium batteries, are housed within the interior chamber 178. An air generation subsystem 182 is also housed within the interior chamber 178. The air generation subsystem 182 is in fluid communication with an air tube within the hose 122 (shown, for example, in FIG. 2). The air generation subsystem 182 may include an air flow device, such as a vacuum generator, a blower, or the like. The airflow device is configured to generate an airflow that cools the UV lamps, forces air from the sterilization head 106 into the backpack assembly 104 and exhausts it through the exhaust port, draws or removes generated ozone from the shroud 112, etc.

[0050] One or more air filters 183, such as carbon filters, are located within backpack assembly 104. Air filter 183 is in communication with an air tube or other such air duct or line that draws air into backpack assembly 104 through hose 122. Air filter 183 is configured to filter air delivered to backpack assembly 104 from shroud 112. For example, air filter 183 may be configured to remove, deactivate, or neutralize ozone.

[0051] A battery 180 and / or power source within the backpack assembly 104 provides power for operation of the UV lamps 140 of the sterilization head 106 (e.g., shown in FIG. 2). A top cap 176 may be removably coupled to the front wall 170 and the rear shell 172. For example, the top wall 176 may be removed to provide access to the battery 180 (e.g., to remove and / or charge the battery). Additional space may be provided within the backpack assembly 104 for supply storage, additional batteries, additional components, etc. In at least one embodiment, the front wall 170, rear shell 172, base 174, and top cap 176 may be formed of fiberglass epoxy.

[0052] 17 shows a front perspective view of a harness 105 coupled to a backpack assembly 104 according to an embodiment of the present disclosure. The harness 105 may include shoulder straps 190 and / or a waist or hip belt or strap 192 to allow the backpack assembly 104 to be worn comfortably by a user.

[0053] 1-17 , in operation, a user may walk through an area while wearing the backpack assembly 104. Once they locate a structure to be sterilized, the user may grasp and position the handle 108, for example, by extending and / or rotating the sterilizing head 106 relative to the handle 108, and position the sterilizing head 106 as desired. The user may then, for example, press an activation button on the handle 108 to activate the UV lamps 140 and emit germicidal UV light at the structure. When the UV lamps 140 are activated, air 150 is forced into the shroud 112 to cool the UV lamps 140 and divert any generated ozone into the backpack assembly 104, where it is filtered by the air filter 183.

[0054] The extendable wand assembly 102 allows the germicidal head 106 to reach areas as far away as, for example, a row in the interior cabin of a commercial aircraft, across three passenger seats.

[0055] Figure 18 illustrates the ultraviolet light spectrum. Referring to Figures 1-18, in at least one embodiment, the germicidal head 106 is configured to emit germicidal UV light (through operation of the UV lamps 140) in the far UV spectrum, such as in the wavelength range of 200 nm to 230 nm. In at least one embodiment, the germicidal head 106 emits germicidal UV light at a wavelength of 222 nm.

[0056] Germicidal UV light at 222 nm has been shown to kill germs (such as viruses and bacteria) rather than inactivate them. In contrast, UVC light at 254 nm inactivates pathogens by interfering with their DNA, resulting in a temporary inactivation state, but may not kill the pathogen. In fact, pathogens may reactivate with exposure to normal white light at a rate of 10% per hour. Thus, 254 nm UVC light may be ineffective in irradiated areas, such as the interior passenger compartment of a vehicle. Furthermore, 254 nm UVC light can penetrate human cells, so human exposure is not recommended.

[0057] In contrast, 222 nm germicidal UV light is safe for human exposure and kills bacteria, and can be emitted at full power within 1 millisecond of UV lamp 140 activation (in contrast, 254 nm UVC light can take several seconds or minutes to reach full power).

[0058] 19 shows a front perspective view of an aircraft 210 according to an embodiment of the present disclosure. The aircraft 210 includes a propulsion system 212, which may include, for example, engines 214. Optionally, the propulsion system 212 may include more engines 214 than are shown. The engines 214 are carried by wings 216 of the aircraft 210. In other embodiments, the engines 214 may be carried by the airframe 218 and / or the tail section 220. The tail section 220 may also support a horizontal stabilizer 222 and a vertical stabilizer 224.

[0059] The fuselage 218 of the aircraft 210 defines an interior cabin 230, which may include a flight deck or cockpit, one or more work areas (such as a galley, crew carry-on baggage areas, etc.), one or more passenger compartments (e.g., first class, business class, and economy compartments), one or more restrooms, etc. As described herein, the interior cabin 230 comprises one or more restroom systems, restroom units, or restrooms.

[0060] Alternatively, embodiments of the present disclosure may be used in various other vehicles instead of aircraft, such as automobiles, buses, locomotive and train cars, ships, etc. Embodiments of the present disclosure may also be used in fixed structures, such as commercial or residential buildings.

[0061] FIG. 20A shows a top plan view of an interior cabin 230 of an aircraft in accordance with an embodiment of the present disclosure. The interior cabin 230 may be located within a fuselage 232 of an aircraft, such as the fuselage 218 of FIG. 19 . For example, one or more fuselage walls may define the interior cabin 230. The interior cabin 230 includes multiple compartments, including a forward compartment 233, a first class compartment 234, a business class compartment 236, a forward galley station 238, an extended economy compartment 240, a standard economy compartment 242, and an aft compartment 244, which may include multiple lavatories and galley stations. It will be understood that the interior cabin 230 may include more or fewer compartments than shown. For example, the interior cabin 230 may not include a first class compartment or may include more or fewer galley stations than shown. Each compartment may be separated by a cabin transition area 246, which may include a class divider assembly between two aisles 248.

[0062] As shown in Figure 20A, interior passenger compartment 230 includes two passageways 250 and 252 that lead to rear compartment 244. Optionally, interior passenger compartment 230 may have fewer or more passageways than shown. For example, interior passenger compartment 230 may include one passageway that extends through the center of interior passenger compartment 230 and leads to rear compartment 244.

[0063] The aisles 248, 250, and 252 extend to an exit aisle or doorway 260. The exit door 262 is located at the end of the exit aisle 260. The exit aisle 260 may be perpendicular to the aisles 248, 250, and 252. The interior cabin 230 may have more exit aisles 260 at different locations than shown. The portable sterilization system 100 shown and described in Figures 1-18 may be used to sterilize various structures within the interior cabin 230, such as passenger seats, monuments, bin assemblies, lavatory and lavatory components, galley equipment and components, etc.

[0064] 20B shows another top plan view of an interior cabin 280 of an aircraft, in accordance with an embodiment of the present disclosure. Interior cabin 280 is an example of interior cabin 230 shown in FIG. 19 . Interior cabin 280 may be within a fuselage 281 of an aircraft. For example, one or more fuselage walls may define interior cabin 280. Interior cabin 280 includes multiple compartments, including a main cabin 282 having passenger seats 283 and an aft compartment 285 behind main cabin 282. It will be understood that interior cabin 280 may include more or fewer compartments than shown.

[0065] The interior passenger compartment 280 may include a passageway 284 that leads to an aft compartment 285. The passageway 284 may extend through the center of the interior passenger compartment 280 and lead to the aft compartment 285. For example, the passageway 284 may be aligned coaxially with a central longitudinal plane of the interior passenger compartment 280.

[0066] The aisle 284 extends to an exit aisle or doorway 290. An exit door 292 is located at the end of the exit aisle 290. The exit aisle 290 may be perpendicular to the aisle 284. The interior cabin 280 may include more exit aisles than shown. The portable sterilization system 100 shown and described in Figures 1-18 may be used to sterilize various structures within the interior cabin 230, such as passenger seats, monuments, bin assemblies, lavatory and lavatory components, and galley equipment and components.

[0067] FIG. 21 shows an interior perspective view of an interior cabin 300 of an aircraft, in accordance with an embodiment of the present disclosure. Interior cabin 300 includes an outboard wall 302 that connects to a ceiling 304. A window 306 may be formed in outboard wall 302. A floor 308 supports a row of seats 310. As shown in FIG. 21 , row 312 may have two seats 310 on either side of an aisle 313. However, row 312 may have more or fewer seats 310 than shown. Interior cabin 300 may also have more aisles than shown.

[0068] Passenger service units (PSUs) 314 are secured between the outboard walls 302 and the ceiling 304 on either side of the aisle 313. The PSUs 314 extend between the forward and aft ends of the interior cabin 300. For example, a PSU 314 may be located above each seat 310 in a row 312. Each PSU 314 may have a housing 316 above each seat 310 (or group of seats) in a row 312 that typically contains controls such as air vents, reading lights, oxygen mask drop panels, flight attendant call buttons, and the like.

[0069] Overhead bin assemblies 318 are secured to the ceiling 304 and / or outboard wall 302 above and inboard of the PSU 314 on either side of the aisle 313. The overhead bin assemblies 318 are secured above the seats 310. The overhead bin assemblies 318 extend between the forward and aft ends of the interior cabin 300. Each bin assembly 318 may include a pivoting shelf or bucket 320 pivotally secured to a strongback (not visible in FIG. 21 ). The overhead bin assemblies 318 may be located above and inboard of the underside of the PSU 314. The overhead bin assemblies 318 are configured to pivot open, for example, to receive a passenger's carry-on baggage or personal belongings.

[0070] As used herein, the term "outboard" means further away from the central longitudinal plane 322 of the interior passenger compartment 300 than another component. The term "inboard" means closer to the central longitudinal plane 322 of the interior passenger compartment 300 than another component. For example, the underside of PSU 314 may be outboard in relation to storage shelf assembly 318.

[0071] The portable sterilization system 100 shown and described in Figures 1 through 18 may be used to sterilize various structures shown within the interior cabin 300. By way of example, the portable sterilization system 100 may be used to sterilize various components within the cockpit or flight deck of an aircraft.

[0072] When not in use, the portable sterilization system 100 may be stored, for example, in a closet, galley cart bay, or galley cart within the interior passenger compartment of the vehicle.

[0073] FIG. 22 shows a perspective interior view of a restroom 330 within an interior cabin of a vehicle, such as any of the interior cabins described herein. The restroom 330 is an example of an enclosed space, monument, or room, for example, within the interior cabin of a vehicle. The restroom 330 may be installed on an aircraft, as previously described. Optionally, the restroom 330 may be installed on various other vehicles. In other embodiments, the restroom 330 may be located within a fixed structure, such as a commercial or residential building. The restroom 330 includes a toilet 332, a cabinet 334, and a base floor 331 supporting a sink 336 or vanity. The restroom 330 may be arranged differently than shown. The restroom 330 may include more or fewer components than those shown. The portable sterilization system 100 shown and described in FIGS. 1-18 may be used to sterilize various structures, parts, and surfaces within the restroom 330.

[0074] 23 shows a flowchart of a portable sterilization method according to an embodiment of the present disclosure. The method includes emitting (400) ultraviolet (UV) light at a wavelength of 200 nm to 230 nm from a sterilization head including a UV lamp onto a surface, and sterilizing (402) the surface via said emitting (400). In at least one embodiment, said emitting (400) includes emitting UV light at a wavelength of 222 nm.

[0075] In at least one embodiment, the portable sterilization method further includes movably coupling a handle to the sterilization head, for example, the movably coupling step includes one or both of linearly moving or pivoting the sterilization head relative to the handle.

[0076] In at least one embodiment, the portable sterilization method further includes coupling the backpack assembly to the sterilization head via a hose.

[0077] 1-23, the portable sterilization system 100 can be safely and effectively used to sterilize high-touch surfaces within the flight deck and interior cabin in a timely and cost-effective manner. UV sterilization allows for rapid and effective sterilization of the interior cabin, for example, between flights. In at least one embodiment, the portable sterilization system 100 is used to enhance the cleaning process, for example, after manual cleaning.

[0078] The present disclosure also includes embodiments based on the following clauses:

[0079] Item 1. Equipped with a sterilization head including an ultraviolet (UV) lamp, The UV lamp is configured to emit UV light with a wavelength of 200 nm to 230 nm to sterilize surfaces. Portable sterilization system.

[0080] Item 2. The portable sterilization system according to Item 1, wherein the UV lamp is configured to emit UV light with a wavelength of 222 nm.

[0081] Item 3. The portable sterilization system according to Item 1 or 2, further comprising a wand assembly, the wand assembly comprising the sterilization head.

[0082] Item 4. The portable sterilization system of item 3, wherein the wand assembly further comprises a handle coupled to the sterilization head.

[0083] Item 5. The portable sterilization system described in Item 4, wherein the wand assembly further comprises a coupler that movably couples the handle to the sterilization head.

[0084] Item 6. A portable sterilization system according to item 4 or 5, wherein the sterilization head is configured to move linearly or pivotally, or both, relative to the handle.

[0085] Item 7. The portable sterilization system according to any one of Items 4 to 6, wherein the handle is configured to move linearly.

[0086] Item 8. The portable sterilization system of any one of items 1 to 7, wherein the sterilization head comprises a shroud that holds the UV lamp.

[0087] Item 9. The portable sterilization system of item 8, wherein the shroud has one or more openings configured to allow air to enter the shroud.

[0088] Item 10. The portable sterilization system of item 8 or 9, further comprising a reflector fixed to an underside of the shroud, the reflector configured to reflect a portion of the UV light emitted by the UV lamp.

[0089] Item 11. The portable sterilization system of any one of items 8 to 10, further comprising a bumper secured to the exposed lower peripheral edge of the shroud.

[0090] Item 12. A backpack assembly; a hose connecting the backpack assembly to the sterilization head. Item 12. The portable sterilization system according to any one of items 1 to 11.

[0091] Item 13. The portable sterilization system of item 12, wherein the backpack assembly includes an airflow device configured to do one or more of: generate airflow to cool the UV lamps, force air through the sterilization head, or remove ozone from the sterilization head.

[0092] Item 14. The portable sterilization system of items 12 or 13, wherein the backpack assembly includes at least one air filter configured to filter air delivered from the sterilization head.

[0093] Item 15. The portable sterilization system of any one of items 12 to 14, wherein the backpack assembly includes one or more batteries that power the UV lamp.

[0094] Item 16. The sterilization head, A reflector; a cover plate; The UV lamp is fixed within an interior chamber defined between the reflector and the cover plate. Item 16. The portable sterilization system according to any one of items 1 to 15.

[0095] Item 17. A step of emitting UV light having a wavelength of 200 nm to 230 nm onto a surface from a sterilization head including an ultraviolet (UV) lamp; and disinfecting the surface by said irradiating step. Portable sterilization method.

[0096] Item 18. The portable sterilization method according to Item 17, wherein the irradiating step includes emitting the UV light having a wavelength of 222 nm.

[0097] Item 19. A portable sterilization method according to Item 17 or 18, further comprising the step of movably connecting a handle to the sterilization head.

[0098] Item 20. A portable sterilization method described in any one of items 17 to 19, wherein the movably coupling step includes one or both of linearly moving or pivoting the sterilization head relative to the handle.

[0099] Item 21. A portable sterilization method described in any one of items 17 to 20, further comprising the step of connecting a backpack assembly to the sterilization head via a hose.

[0100] Item 22. A wand assembly comprising a sterilizing head having a shroud for holding an ultraviolet (UV) lamp, a handle movably coupled to the sterilizing head, and a coupler for movably coupling the handle to the sterilizing head, wherein the sterilizing head is configured for one or both of linear movement and pivoting relative to the handle, the handle is configured for linear movement, and the shroud has one or more openings configured to allow air to enter the shroud; a backpack assembly including one or more batteries for powering the UV lamps, at least one air filter configured to filter air drawn from the sterilization head, and an airflow device configured to one or more of: generate an airflow for cooling the UV lamps, draw air from the sterilization head, or remove ozone from the sterilization head; a hose connecting the backpack assembly to the sterilization head; The UV lamp is configured to emit UV light at a wavelength of 222 nm to sterilize surfaces. Portable sterilization system.

[0101] As described herein, embodiments of the present disclosure provide systems and methods for efficiently sterilizing surfaces, components, structures, etc. within the interior passenger compartment of a vehicle. Additionally, embodiments of the present disclosure provide compact, easy-to-use, and safe systems and methods that use UV light to sterilize surfaces within the interior passenger compartment.

[0102] Various spatial and directional terms, such as top, bottom, lower, middle, side, horizontal, vertical (lengthwise), front, etc., may be used to describe embodiments of the present disclosure, but it is understood that such terms are used solely with respect to the orientation shown in the figures. The orientation may be flipped, rotated, or otherwise changed, such as top becoming bottom or vice versa, horizontal becoming vertical, etc.

[0103] As used herein, a structure, constraint, or element that is "configured to" perform a task or operation is particularly structurally shaped, constructed, or adapted in a manner corresponding to that task or operation. For clarity and avoidance of doubt, an object that is merely capable of being modified to perform a task or operation is not "configured to" perform that task or operation as used herein.

[0104] It is to be understood that the above description is intended to be illustrative, and not limiting. For example, the above-described embodiments (and / or aspects thereof) can be used in combination with each other. Additionally, many modifications can be made to adapt a particular situation or material to the teachings of the various embodiments of the present disclosure without departing from the scope of the present disclosure. The dimensions and types of materials described herein are intended to define the parameters of the various embodiments of the present disclosure, and the present embodiments are exemplary rather than limiting. Many other embodiments will be apparent to those skilled in the art upon review of the above description. The scope of the various embodiments of the present disclosure should, therefore, be determined with reference to the appended claims, along with the full range of equivalents to which such claims are entitled. In the appended claims and the detailed description herein, the terms "including" and "in which" are used as the plain-English equivalents of the respective terms "comprising" and "wherein." Furthermore, terms such as "first," "second," and "third" are used merely as labels and are not intended to constrain numerical requirements thereto. Also, the following claim limitations are not written in means-plus-function form, and such claim limitations are not intended to be construed under 35 U.S.C. §112(f) unless the phrase "means for" is expressly used followed by a recitation of a function without further structure.

[0105] This specification uses examples to disclose various embodiments of the present disclosure, including the best mode, and also to enable those skilled in the art to practice various embodiments of the present disclosure, including making and using any devices or systems, and performing any incorporated methods. The patentable scope of the various embodiments of the present disclosure is defined by the claims, and may include other examples that occur to those skilled in the art. Such other examples are intended to be within the scope of the claims if the examples have structural elements that do not differ from the claim language, or if the examples include equivalent structural elements that differ only insignificantly from the claim language. [Explanation of symbols]

[0106] 100 Portable Sterilization System 101 User 102 Wand assembly 104 Backpack Assembly 105 Harness 106 Sterilization Head 108 Handle 109 Rock 110 Combiner 112 Shroud 114 Outer cover 116 Proximal end 118 Distal end 120 port 122 Hose 124 Fixed Beam 126 Extension Beam 128 Bearing Assembly 129 Pivot axis 130 rods 132 nigiri 134 Tactile Shape 136 Bearings 138 Pivot axis 140 UV lamps 141 Lower side 142 Reflector 143 Reflective surface 144 Side wall 146 Upper Wall 150 air 152 Opening 153 Bumper 154 Cover plate 155 Lower periphery 156 Inner room 157 rims 159 Ranging LED 160 Mounting bracket (clamp) 170 Front wall 172 rear shell 174 Base 176 Upper cap (top wall) 178 Inner room 180 Battery 182 Air Generation Subsystem 183 Air Filter 190 shoulder straps 192 Waist or hip belts or straps 210 Aircraft 212 Propulsion System 214 Engine 216 Wings 218 aircraft 220 Tail 222 Horizontal stabilizer 224 vertical stabilizer 230 interior rooms 232 aircraft 233 Front compartment 234 First Class Section 236 Business Class Section 238 Forward Galley Station 240 Expanded Economy Section 242 standard economy compartment 244 Rear compartment 246 Guest room transition area 248 Passage 250 aisles 252 Passage 260 Exit passage 262 Exit Door 280 interior rooms 281 aircraft 282 Main guest room 283 passenger seats 284 Passage 285 rear compartment 290 Exit passage 292 Exit Door 300 interior rooms 302 Outer wall 304 Ceiling 306 Window 308 beds 310 seats Column 312 313 Passage 314 PSU 316 Housing 318 Storage shelf assembly 320 Bucket 322 Central longitudinal section 330 Restroom 331 Base Floor 332 Toilet 334 Cabinet 336 Sink

Claims

1. a wand assembly (102) having a germicidal head (106) including an ultraviolet (UV) lamp; a backpack assembly (104) coupled to the sterilization head (106); the ultraviolet (UV) lamp (140) is configured to emit UV light with a wavelength of 200 nm to 230 nm for sterilizing surfaces; the backpack assembly (104) includes an airflow device configured to generate airflow for cooling the ultraviolet (UV) lamps and / or to direct air away from the sterilization head (106) and / or to remove ozone from the sterilization head (106); A portable sterilization system (100).

2. 10. The portable sterilization system of claim 1, wherein the ultraviolet (UV) lamp is configured to emit UV light at a wavelength of 222 nm.

3. The portable sterilization system (100) of claim 1, wherein the wand assembly (102) further comprises a handle (108) coupled to the sterilization head.

4. 4. The portable sterilization system (100) of claim 3, wherein the wand assembly (102) further comprises a coupler that movably couples the handle (108) to the sterilization head.

5. 5. The portable sterilization system (100) of claim 3 or 4, wherein the sterilization head (106) is configured for one or both of linear movement and pivotal movement relative to the handle (108).

6. The portable sterilization system (100) of any one of claims 3 to 5, wherein the handle (108) is configured for linear movement.

7. The portable sterilization system (100) of any one of claims 1 to 6, wherein the sterilization head (106) comprises a shroud (112) that holds the ultraviolet (UV) lamp (140).

8. 8. The portable sterilization system (100) of claim 7, wherein the shroud (112) has one or more openings configured to allow air to enter the shroud (112).

9. 9. The portable sterilization system (100) of claim 7 or 8, further comprising a reflector (142) fixed to an underside (141) of the shroud (112), the reflector (142) configured to reflect a portion of the ultraviolet (UV) light emitted by the UV lamp (140).

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