Fireplace with electrostatic particle separator
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Solution Overview
Problem
Existing wood-burning stoves require significant installation space and complex electrical wiring for electrostatic dust separators, which are typically installed outside the stove or chimney, limiting their practicality and ease of retrofitting.
Innovation Solution
The smoke deflection chamber and its outlets in the fireplace are designed as separation electrodes, with a spray electrode insulated from the blind cover, using the chamber walls and outlets as collection electrodes, and a high-voltage supply line through a tubular insulator to electrostatically charge and collect dust particles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If electrostatic dust separators are installed outside the stove in the area behind its flue outlet or at the chimney, then dust separation function is achieved, but installation space requirement increases and device complexity increases
Solution Approach 1:
The patent merges the electrostatic dust separator with the existing smoke deflection chamber by integrating the spray electrode into the blind cover and using the chamber walls as collection electrodes. This combination eliminates the need for separate external dust separator units, thereby reducing installation space while maintaining dust separation functionality.
Solution Approach 2:
The smoke deflection chamber is given dual functionality: it continues to serve its original purpose of directing smoke flow while simultaneously functioning as an electrostatic dust separator. The blind cover is transformed from a simple closure to a multi-component assembly housing the spray electrode and high-voltage supply connection, demonstrating universal design where existing structures perform multiple functions.
2Object-affected harmful factors
If electrostatic dust separators are installed outside the stove, then dust separation function is achieved, but wiring complexity and installation complexity increase
Solution Approach 1:
The high-voltage supply line is integrated directly into the blind cover structure, which is already part of the stove assembly. This merging of the electrical supply system with the existing structural component simplifies wiring by eliminating separate external electrical connections and reduces installation complexity by utilizing pre-existing mounting points and pathways within the stove structure.
3Volume of stationary object
If the spray electrode is positioned close to surrounding components, then installation space is saved, but spark discharges may occur between high-voltage components and zero potential components
Solution Approach 1:
The tubular insulator acts as an intermediary element between the high-voltage spray electrode and the surrounding zero-potential components (chamber walls, deflection plates, blind cover). This insulating barrier allows the spray electrode to be positioned within the smoke deflection chamber while maintaining sufficient electrical clearance, thus preventing spark discharges while still achieving compact integration within the existing stove structure.
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
This design minimizes installation space requirements and allows easy retrofitting of existing stoves with electrostatic dust separation, ensuring safe operation by maintaining a safe distance from surrounding components.
Implementation Method 1
a spray electrode arranged in the interior of the smoke deflection chamber, which is electrically insulated from the blind cover
Implementation Method 2
the walls of the smoke deflection chamber and the subsequent smoke outlets are designed as separating electrodes of an electrostatically acting dust separator
Data Source
Figure 1
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AI summary
The invention relates to a wood-burning stove with a smoke deflection chamber (4) arranged above its combustion chamber (2), which is provided with two identically designed smoke outlets (5, 6), the first (5) of which exits upwards and the second (6) to the rear of the wood-burning stove, wherein one of these smoke outlets (5 or 6) is connected to a flue pipe (7) leading to the chimney, while the other smoke outlet (6 or 5) is closed by a blind cover (8).In order to equip such a fireplace with an electrostatic dust separation system in a simple and space-saving manner, the invention proposes that the walls of the smoke deflection chamber (4) and the adjoining smoke outlets (5, 6) are designed as separation electrodes of an electrostatic dust separation device, and that a spray electrode (12) is arranged in the interior of the smoke deflection chamber (4), which is electrically insulated from the blind cover (8).