Sterilization Lamp with UV Segmentation for Safe Air Purification

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Solution Overview

Problem

Existing methods for air disinfection are either harmful to humans, ineffective when people are present, or require frequent reactivation, as they rely on chemical disinfectants or ultraviolet irradiation that can cause damage and ozone generation.

Innovation Solution

A sterilizing lamp with a built-in fan and filter screen bracket that circulates air through a multi-layer filter and ultraviolet light emitting device, preventing ultraviolet leakage and allowing continuous operation while people are in the room, using a lamp body module with air inlets and outlets and wall-mounted accessories for versatile installation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If ultraviolet fluorescent lamps are used for disinfection, then sterilization effect is improved, but harmful effects to human body (ultraviolet damage, ozone generation) worsen

Engineering Contradiction:

Improvesterilization effectVSAvoidultraviolet damage to human body

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent segments the ultraviolet light into two distinct components: a lower wavelength component (200-280nm) for sterilization and a higher wavelength component (300-400nm) for illumination. This segmentation allows the sterilization function to be performed without exposing humans to harmful ultraviolet rays, as the illumination component does not cause damage while still providing visible light.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies local quality by directing different wavelength components to different functions: the lower wavelength ultraviolet component is directed at pathogens for sterilization, while the higher wavelength component provides safe illumination. This localized functional assignment ensures that harmful ultraviolet radiation is confined to where it is needed for sterilization only.

Inventive Principle:

Principle #3Local quality

2Reliability

If chemical disinfectants are sprayed into air, then disinfection is achieved, but excessive disinfection and harm to human body worsen

Engineering Contradiction:

Improvedisinfection effectVSAvoidexcessive disinfection and chemical harm

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent replaces the chemical disinfection mechanism with a physical one: ultraviolet radiation. This substitution eliminates the need for chemical substances that can cause excessive disinfection and harm to the human body, while still achieving effective pathogen elimination through radiation-based sterilization.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If ultraviolet irradiation is used for air disinfection, then sterilization is achieved, but continuous operation is prevented due to safety concerns

Engineering Contradiction:

Improvesterilization effectVSAvoidcontinuous operation time

Core Design Contradiction:

ReliabilityVSDuration of action of moving object

Solution Approach 1:

The patent changes the wavelength parameter of the ultraviolet light to a safer range (300-400nm) for the illumination component, allowing continuous operation without the safety concerns associated with traditional ultraviolet disinfection. This parameter change enables the lamp to run continuously in occupied spaces while maintaining sterilization effectiveness.

Inventive Principle:

Principle #35Parameter changes

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

The lamp effectively filters and sterilizes indoor air continuously, preventing bacterial and viral contamination, ensuring safety and real-time air purification without ultraviolet light leakage, and allowing multiple uses such as a table, bed, or ceiling lamp.

Implementation Method 1

irradiated for sterilization in the ultraviolet light emitting device

Methodology Applied

Scientific EffectUltraviolet irradiation: Radiation

Implementation Method 2

when the air passes through the air filtering device, viruses, bacteria and fine particulate matter are filtered and retained by the air filtering device

Methodology Applied

Scientific EffectFiltration: Filter (physical)

Implementation Method 3

the fan is used for sucking outside air from the air inlet into an inner cavity of the filter screen bracket, which passes the airflow channel opening

Methodology Applied

Scientific EffectForced convection: Forced Convection

Data Source

PatentUS11813379B2Sterilization and disinfection lamp

Publication Date: 2023.11.14 CE LIGHTING

AI summary

A sterilizing lamp comprises a lamp body module having an air inlet and an air outlet at the-bottom and top of the module, respectively, a circuit board module, an ultraviolet light emitting device, a fan and a filter screen bracket. The filter screen bracket wraps and covers the ultraviolet light emitting device. An airflow channel opening is arranged on the filter screen bracket. An air filtering device is wrapped on the filter screen bracket to cover the airflow channel opening. The outside air is suctioned by the fan into the module and is filtered by the air filtering device and then is discharged from the air outlet. When the air passes through the air filtering device fine particulate matter are filtered and retained by the air filtering device, and are irradiated for sterilization in the ultraviolet light emitting device.