Electrostatic precipitating apparatus and air conditioning system having same

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Solution Overview

Problem

Air conditioning systems face challenges in efficiently removing fine dust while minimizing pressure loss and reducing vibration, especially when using electrostatic precipitators, which can lead to decreased air blowing efficiency and increased pressure loss.

Innovation Solution

An electrostatic precipitating apparatus is integrated into the air conditioning system, featuring a prestressing locking member that resiliently supports the electrostatic precipitator, a washing water supply system to remove dust, and a washing water treatment section with an adsorption belt and scraper to separate dust, minimizing pressure loss and vibration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If an electrostatic precipitator is installed to remove fine dust, then dust removal efficiency is improved, but pressure loss increases and air blowing efficiency decreases

Engineering Contradiction:
Improvedust removal efficiencyVSAvoidpressure loss
Core Design Contradiction:
ReliabilityVSLoss of energy

Solution Approach 1:

The electrostatic precipitator is divided into multiple electrode assemblies arranged in parallel, with discharge electrodes and precipitating electrodes segmented into separate modular units. This segmentation reduces the overall resistance to air flow while maintaining effective dust collection across multiple zones, thereby reducing pressure loss without compromising dust removal efficiency.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The electrode surfaces are designed with specific local characteristics including corona enhancement structures at critical regions and optimized gap distances between electrodes. The discharge electrodes feature pointed or ridged configurations to concentrate electric field intensity locally, improving ion generation efficiency and reducing the voltage required, which in turn reduces energy consumption and pressure loss.

Inventive Principle:
Principle #3Local quality

2Reliability

If an electrostatic precipitator is installed to remove fine dust, then dust removal efficiency is improved, but air blowing efficiency decreases

Engineering Contradiction:
Improvedust removal efficiencyVSAvoidair blowing efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The precipitator is configured with multiple parallel electrode assemblies that create separate dust collection channels. This allows air to flow through multiple paths simultaneously, reducing the overall flow resistance and maintaining higher air blowing efficiency while still achieving effective dust removal through the cumulative effect of all electrode pairs.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The electrode assemblies are designed with adjustable spacing and configurable activation patterns. By dynamically optimizing the operational configuration based on dust load conditions, the system can maintain high air flow efficiency during low-dust periods while maximizing dust collection during high-load conditions, thus resolving the trade-off between productivity and reliability.

Inventive Principle:
Principle #15Dynamics

3Reliability

If washing water is sprayed to the electrostatic precipitator to remove dust, then dust removal is improved, but vibration increases

Engineering Contradiction:
Improvedust removalVSAvoidvibration
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

A damping support structure serves as an intermediary element between the electrostatic precipitator and the air conditioning system housing. This support structure absorbs and dissipates vibration generated during washing operations, preventing transmission to the overall system while allowing the washing function to proceed effectively for dust removal.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The precipitator is mounted on vibration-damping supports and isolated mounting elements before washing operations begin. These pre-installed cushioning elements are designed to specifically counteract the frequency and magnitude of vibrations expected during water spraying, thereby protecting the system from harmful vibrations while maintaining effective dust removal through washing.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

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 solution efficiently removes fine dust from the air while minimizing pressure loss and reducing vibration, maintaining air blowing efficiency and extending the service life of the washing water by purifying it.

Implementation Method 1

an electrostatic precipitator including a plurality of discharge electrodes to which a voltage is applied and a plurality of electrostatic precipitating electrodes each disposed between the discharge electrodes and grounded

Methodology Applied
Scientific EffectElectrostatic precipitation: Electrostatic Deposition

Implementation Method 2

a washing water supply spraying the washing water to the electrostatic precipitator

Methodology Applied
Scientific EffectFluid spray: Fluid Spray

Implementation Method 3

an adsorption belt formed in an endless track and accommodated in the water reservoir

Methodology Applied
Scientific EffectAdsorption: Adsorption

Data Source

PatentUS11654386B2Electrostatic precipitating apparatus and air conditioning system having same
Publication Date: 2023.05.23 DOOSAN HEAVY IND & CONSTR CO LTD
  • US11654386B2 patent drawing
  • US11654386B2 patent drawing
  • US11654386B2 patent drawing

AI summary

An electrostatic precipitating apparatus for an air conditioning system is disclosed. The precipitating apparatus includes an electrostatic precipitator including a plurality of discharge electrodes to which a voltage is applied and a plurality of electrostatic precipitating electrodes each disposed between the discharge electrodes and grounded, a washing water supply spraying the washing water to the electrostatic precipitator, and a frame assembly fixed to the duct to support the electrostatic precipitator. The frame assembly is fixed to the duct to support the electrostatic precipitator, and includes a prestressing locking member fixed to inside of the duct in a state in which a pressing force is applied to the electrostatic precipitator.