Air purifier and operating method of the same

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Solution Overview

Problem

Air purifiers face a significant challenge in maintaining filter longevity when exposed to contaminants like cigarette smoke or oil mist, as they intensively suck these pollutants, drastically shortening the filter's lifespan.

Innovation Solution

An air purifier system that uses sensors and artificial neural networks to detect situations where filter protection is necessary, suspending the air purifying function and initiating ventilation operations to prevent excessive strain on the filter, utilizing a home automation server to communicate with sensors and ventilation devices to manage airflow and pollution levels.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the air purifier intensively sucks air to remove contaminants, then the air purifying performance is improved, but the filter life is drastically shortened

Engineering Contradiction:
Improveair purifying performanceVSAvoidfilter life
Core Design Contradiction:
ProductivityVSDuration of action of stationary object

Solution Approach 1:

The air purifier dynamically adjusts its operation mode based on real-time sensor data. When contaminants like cigarette smoke or oil mist are detected, the system switches from intensive suction mode to ventilation mode, optimizing both air purification effectiveness and filter longevity through adaptive operational dynamics

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes operational parameters by switching between different modes (air purifying function vs. ventilation function) based on detected contaminant types. This parameter change allows the system to handle different situations optimally, protecting the filter from contaminants that would cause drastic shortening while maintaining effective purification for suitable contaminants

Inventive Principle:
Principle #35Parameter changes

2Reliability

If the air purifier operates continuously to maintain air quality, then the air quality improvement is achieved, but the filter degradation accelerates in certain situations

Engineering Contradiction:
Improveair quality maintenanceVSAvoidfilter degradation
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The air purifier incorporates sensor feedback mechanisms that continuously monitor indoor air quality and contaminant types. Based on this feedback, the controller intelligently decides whether to activate the air purifying function or ventilation function, creating a closed-loop system that balances air quality maintenance with filter protection

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The controller acts as an intermediary between the sensors and the airflow generator, processing sensor information about indoor situations and mediating the appropriate operational response. This intermediary function enables intelligent decision-making that protects the filter from harmful contaminants while maintaining air quality

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS11480351B2Air purifier and operating method of the same
Publication Date: 2022.10.25 LG ELECTRONICS INC
  • US11480351B2 patent drawing
  • US11480351B2 patent drawing
  • US11480351B2 patent drawing

AI summary

Disclosed is a method of operating an air purifier by executing an artificial intelligence (AI) algorithm and/or a machine learning algorithm in a fifth generation (5G) environment connected for the Internet of Things. A method for operating an air purifier comprises determining whether an indoor situation is a situation in which protection of a filter is necessary based on sensor information from at least one sensor, in response to a determination that the indoor situation is the situation in which protection of the filter is necessary, suspending an air purifying function, and operating one or more ventilation devices. According to the present disclosure, it is possible to protect the air purifier from a situation in which a life of the filter of the air purifier can be drastically shortened.