Compact Stove ESP Layout for Cleanable Particle Filtration
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Solution Overview
Problem
Existing stoves with electrostatic precipitators (ESPs) are bulky, difficult to clean, and prone to electrical discharge due to ash-like layers forming on collection electrodes, which compromises their operation.
Innovation Solution
The stove design incorporates a compact ESP with a discharge electrode holder that closes off one side of the channel, an insulating electrode holder to prevent electrical current, and a configuration that allows particles to precipitate on the collection electrode walls, including features like varying cross-sections and releasable attachment for easy cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the ESP is positioned on top of the stove with a conventional configuration, then the ESP can effectively filter particles from exhaust gases, but the stove occupies a significant amount of space and becomes unsuitable for small living rooms
Solution Approach 1:
The discharge electrode holder is nested within the channel defined by the collection electrode wall, closing off one side of the channel. This nested configuration allows the ESP to maintain its particle filtration effectiveness while occupying significantly less space, making the stove suitable for small living rooms.
Solution Approach 2:
The invention changes the spatial arrangement from a conventional linear configuration to a compact three-dimensional arrangement where the discharge electrode holder closes off one side of the channel. This dimensional reorganization maintains filtration effectiveness while reducing the overall volume occupied by the stove.
2Productivity
If the ESP operates for an extended period, then more particles are filtered from the exhaust gases, but the ash-like layer on the collection electrode becomes thicker and increases the risk of electrical discharge
Solution Approach 1:
The discharge electrode holder is extracted and positioned outside the channel, closing off one side. This separation prevents the holder from being covered by the ash-like layer, eliminating the source of electrical discharge while maintaining the channel's particle filtration capacity over extended operation periods.
Solution Approach 2:
The discharge electrode holder acts as an intermediary structure that closes off the channel at one side, creating a configuration where exhaust gases flow through the channel but cannot cover the holder. This intermediary position prevents electrical discharge while allowing continuous particle filtration.
3Productivity
If the ESP is designed with a conventional open-channel configuration, then exhaust gases can flow freely through the channel, but the discharge electrode holder becomes difficult to clean and accumulates ash-like layers
Solution Approach 1:
The discharge electrode holder is extracted from the interior of the channel and positioned to close off one side from the exterior. This extraction makes the holder easily accessible for cleaning while maintaining the channel's open configuration for efficient exhaust gas flow.
Solution Approach 2:
The discharge electrode holder closing off the channel creates a configuration where the holder is naturally exposed and accessible, enabling easy self-cleaning maintenance without requiring disassembly or special access procedures, while the channel remains open for continuous exhaust gas flow.
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 design maintains ESP effectiveness while keeping the stove compact, reduces the risk of electrical discharge, and facilitates easy cleaning, ensuring reliable operation and reduced environmental impact.
Implementation Method 1
The discharge electrode and collection electrode are configured to, when the ESP is in operation, cause particles in the exhaust gases to ionize and precipitate on the wall
Implementation Method 2
The potential difference between the discharge electrode and collection electrode causes a corona discharge between the discharge electrode and collection electrode. Fine particles in the exhaust gases that travel in the longitudinal direction through the channel and through the corona discharge, ionize and precipitate on the collection electrode
Implementation Method 3
The potential difference between the discharge electrode and collection electrode causes a corona discharge between the discharge electrode and collection electrode
Data Source
Figure 1A~1C
Figure 2A~2B
Figure 3
AI summary
A stove is disclosed herein. The stove comprises an exhaust system for discharging exhaust gases from the stove. The exhaust system comprises an electrostatic precipitator, ESP. The ESP comprises a discharge electrode having a length extending along a longitudinal direction. The ESP also comprises a collection electrode extending along the longitudinal direction and comprising a wall that at least partially surrounds the discharge electrode. The wall defines a channel for accommodating a flow of exhaust gases along the longitudinal direction. The discharge electrode and collection electrode are configured to, when the ESP is in operation, cause particles in the exhaust gases to ionize and precipitate on the wall. The ESP further comprises an electrically insulating discharge electrode holder that holds the discharge electrode. The discharge electrode holder closes off the channel at one side of the channel for preventing a longitudinally directed flow of exhaust gases out of or into the channel at said one side of the channel. Further, the wall comprises an opening for letting exhaust gases out of or into the channel.