Integrated UVC Cash Drawer for Real-Time Currency Sterilization
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Solution Overview
Problem
Existing ultraviolet sterilization systems for currency and surfaces are impractically designed, inefficient, and require long exposure times, failing to ensure complete decontamination of high-risk items like currency during routine transactions, which increases the risk of microbial transmission in retail and other industries.
Innovation Solution
An integrated ultraviolet cash drawer system that uses UVC lamps to irradiate currency within a cash drawer, ensuring efficient and safe decontamination during routine transactions, with a modular design for easy maintenance and integration into existing check-out stations, along with a caddy device for comprehensive germicidal protection in retail, hospital, and restaurant settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If prior ultraviolet sterilization devices are used, then microbial decontamination is achieved, but UV exposure time is long and manipulation is cumbersome, delaying the purchasing process
Solution Approach 1:
The UV lamps are pre-installed within the cash drawer structure, positioned to automatically irradiate currency when the drawer is closed. This preliminary arrangement eliminates the need for manual positioning and extended exposure time, as the sterilization action is prepared in advance and activated automatically during normal drawer operation
Solution Approach 2:
The cash drawer system performs self-sterilization through integrated UV lamps that automatically activate when the drawer closes. The system serves itself by combining the currency storage function with the sterilization function, eliminating the need for separate manual sterilization operations and reducing both exposure time and manipulation complexity
2Reliability
If prior ultraviolet sterilization systems are integrated into cash drawers, then germicidal protection is provided, but the design becomes commercially impractical and manufacturing becomes expensive
Solution Approach 1:
The cash drawer is designed to serve multiple functions simultaneously: currency storage, currency transport, and UV sterilization. By integrating the UV lamps into the existing drawer structure rather than adding a separate sterilization device, the system achieves multi-functionality without significantly increasing manufacturing complexity or cost
Solution Approach 2:
The sterilization function is merged with the cash drawer structure by installing UV lamps within the drawer compartment. This combination integrates two previously separate functions (storage and sterilization) into a single unit, reducing the number of separate components that would need to be manufactured and assembled, thereby lowering overall manufacturing cost and complexity
3Productivity
If employees manually handle currency without sterilization, then operational efficiency is maintained, but microbial transmission risk increases
Solution Approach 1:
The UV sterilization operates continuously and automatically each time the cash drawer is closed, providing uninterrupted germicidal protection during all transaction activities. This continuous action ensures that every batch of currency processed through the drawer undergoes sterilization without interrupting the flow of transactions, maintaining productivity while eliminating microbial transmission risk
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Significantly reduces or eliminates microbial transmission with real-time UV irradiation during currency exchange, providing effective germicidal protection without altering normal operations or requiring additional training, and is applicable in various industries where microbial control is crucial.
Implementation Method 1
ultraviolet lamps operating at a wavelength of 253.7 nanometers
Data Source
AI summary
The invention relates to a system, methods and apparatus for efficiently and cost-effectively preventing the transfer of microbes, such as, for example, bacteria and viruses seamlessly during commercial transactions typically occurring at a full service check-out station in a large retail store. The invention further considers the application of the methods and apparatus in other industrial disciplines where, for example, medical equipment and surgical tools may be susceptible to cross-contamination of microbes. One preferred embodiment incorporates a slide able drawer within a cash box where currency is stored, taken, or added randomly over a period of time. Especially designed lamps allow for a rapid switching means to control the time period for activating or deactivating lamps, thus regulating UV exposure. Exposure time with UVC and the orientation of the UV lamps provides complete germicidal decontamination within seconds. A caddy containing natural botanical cleaning components, method of use and a microbe testing method are described to provide retail stores, hospitals and restaurants a highly efficient and cost-effective means to reduce or eliminate microbes on store surfaces.