Instantaneous sterilization system for ventilation and air conditioning

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Solution Overview

Problem

Current ventilation and air conditioning systems face challenges in instantaneously sterilizing air of bacteria and viruses, particularly in manned environments like hospitals and public spaces, due to limitations in existing filtration technologies and disinfection methods, which are either ineffective or pose health risks.

Innovation Solution

An instantaneous sterilization system incorporating a combination of ULPA or HEPA filters with hydrogen peroxide silver ion disinfection, ultraviolet, microwave, infrared, X-ray, or γ-ray technologies, along with air-liquid mixing and spraying methods, to effectively block and kill bacteria and viruses within seconds while ensuring safety for occupants.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If ultraviolet ray or ozone disinfection devices are used to kill bacteria and viruses, then disinfection effectiveness is improved, but disinfection time is extended and human safety is compromised

Engineering Contradiction:
Improvedisinfection effectivenessVSAvoiddisinfection time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent replaces traditional mechanical/chemical disinfection methods (ultraviolet lamps, ozone generators) with an electrostatic field-based instantaneous sterilization device. The device uses high-voltage electrostatic fields to generate corona discharge and plasma, which instantly inactivate bacteria and viruses without requiring prolonged exposure time or harmful chemicals.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the fundamental parameter of disinfection from low-energy gradual processes (ultraviolet irradiation, ozone diffusion) to high-energy instantaneous processes (electrostatic field, corona discharge). This parameter change enables disinfection to occur in seconds rather than minutes or hours, and allows operation in occupied spaces.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If ultraviolet disinfection lamps are used in manned environments, then disinfection capability is improved, but human health is seriously harmed

Engineering Contradiction:
Improvedisinfection capabilityVSAvoidhuman health impact
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent converts the harmful effects of high-voltage electrostatic fields and corona discharge (which would be dangerous under normal circumstances) into a beneficial sterilization mechanism. The plasma and reactive oxygen species generated by the electrostatic field instantly destroy pathogens while the brief exposure time and controlled application prevent harm to humans.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The patent substitutes ultraviolet radiation (which causes DNA damage and eye injury) with electrostatic field-based sterilization. The electrostatic method uses physical field forces and plasma chemistry rather than ionizing radiation, eliminating the harmful effects on human tissue while maintaining disinfection effectiveness.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If high efficiency particle air filters are used to block bacteria, then filtration capability is improved, but bacteria breed on filters and replacement frequency increases

Engineering Contradiction:
Improvefiltration capabilityVSAvoidfilter service life
Core Design Contradiction:
ReliabilityVSDuration of action of stationary object

Solution Approach 1:

The patent applies preliminary sterilization to the air stream before it reaches the filter. By using the electrostatic field to inactivate bacteria and viruses upstream, the filter is protected from biological contamination and odor generation, extending its service life and maintaining performance.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent introduces an intermediary sterilization step between the air source and the filter. The electrostatic field acts as a mediator that neutralizes pathogens before they can colonize the filter, preventing the filter from becoming a breeding ground for bacteria.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Productivity

If wind speed of ventilation systems is increased to reduce transmission time, then air circulation efficiency is improved, but bacteria and viruses cannot be killed within the reduced time

Engineering Contradiction:
Improveair circulation efficiencyVSAvoidsterilization effectiveness
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The patent replaces time-dependent sterilization mechanisms (which require slow air flow for adequate exposure) with instantaneous sterilization using electrostatic fields. This allows high wind speeds to be maintained while still achieving complete pathogen inactivation in fractions of a second.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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 system achieves real-time sterilization of air in ventilation systems, preventing the propagation of bacteria and viruses, ensuring a safe atmosphere in environments where traditional methods are hazardous or ineffective, and supports unmanned operation for enhanced safety and efficiency.

Implementation Method 1

an instantaneous sterilization device, comprising: an air inlet communicated with air and configured as an input end of the instantaneous sterilization device; an instantaneous sterilization device... a negative high voltage electrode and a positive high voltage electrode... a corona discharge zone between the negative high voltage electrode and the positive high voltage electrode

Methodology Applied
Scientific EffectCorona discharge: Corona Discharge

Implementation Method 2

a corona discharge zone between the negative high voltage electrode and the positive high voltage electrode, an output end of the instantaneous sterilization device provided with a sterilized air outlet communicated with air and configured as an output end of the instantaneous sterilization device

Methodology Applied
Scientific EffectIonization: Ionisation

Implementation Method 3

an instantaneous sterilization device being one or more of a chlorine dioxide disinfector, a hydrogen peroxide or hydrogen peroxide silver ion disinfector, an ultraviolet disinfector

Methodology Applied
Scientific EffectUltraviolet irradiation: Photodissociation

Implementation Method 4

an instantaneous sterilization device being one or more of a chlorine dioxide disinfector, a hydrogen peroxide or hydrogen peroxide silver ion disinfector, an ultraviolet disinfector, an ULPA ultra-efficient air filter, a HEPA high efficiency particle air filter, a laser disinfector, a microwave disinfector

Methodology Applied
Scientific EffectMicrowave radiation: Microwave Radiation

Implementation Method 5

a laser disinfector, a microwave disinfector, an infrared disinfector, an X-ray disinfector and a γ-ray disinfector

Methodology Applied
Scientific EffectInfrared radiation: Infrared Radiation

Implementation Method 6

a microwave disinfector, an infrared disinfector, an X-ray disinfector and a γ-ray disinfector

Methodology Applied
Scientific EffectX-ray radiation: X-Ray

Implementation Method 7

an infrared disinfector, an X-ray disinfector and a γ-ray disinfector

Methodology Applied
Scientific EffectGamma radiation: Radiation

Implementation Method 8

an ULPA ultra-efficient air filter, a HEPA high efficiency particle air filter

Methodology Applied
Scientific EffectPhysical filtration: Filter (physical)

Data Source

PatentUS11911538B2Instantaneous sterilization system for ventilation and air conditioning
Publication Date: 2024.02.27 WANG QUANLING
  • US11911538B2 patent drawing
  • US11911538B2 patent drawing
  • US11911538B2 patent drawing

AI summary

An instantaneous sterilization system for ventilation and air conditioning comprises: an air inlet; an instantaneous sterilization device being one or more of a chlorine dioxide disinfector, a hydrogen peroxide or hydrogen peroxide silver ion disinfector, an ultraviolet disinfector, an ULPA ultra-efficient air filter, a HEPA high efficiency particle air filter, a laser disinfector, a microwave disinfector, an infrared disinfector, an X-ray disinfector and a γ-ray disinfector, an output end of the instantaneous sterilization device being provided with a sterilized air outlet, and the sterilized air outlet being communicated with air and serves as an output end of the instantaneous sterilization system for ventilation and air conditioning; and a fan, an air inlet end of the fan being connected with the air inlet, and an air exhaust end of the fan being connected with the input end of the instantaneous sterilization device.