Filter for electric dust collector, electric dust collector, and air conditioner
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Solution Overview
Problem
Existing air filters in air conditioners struggle to increase airflow cleanliness without increasing airflow resistance, particularly in capturing fine dust particles smaller than the mesh size, as they either allow these particles to pass through or require smaller mesh sizes that increase resistance, and existing electrostatic filters fail to catch uncharged dust particles.
Innovation Solution
A filter for an electric dust collector featuring a conductive filter frame and a mesh sheet with a conductive material on its surface, where the mesh sheet is electrically connected to the frame, allowing for efficient charging and adherence of fine particles, and a repelling electrode is used to change the trajectory of charged particles, ensuring they adhere to the filter without increasing airflow resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a smaller mesh size is used to capture fine dust particles, then the cleanliness degree of airflow is improved, but the air flow resistance is increased
Solution Approach 1:
The patent changes the physical state of the filter material by applying conductive coating to the mesh sheet, transforming it from a purely mechanical filter to an electrostatic filter. This parameter change allows the filter to capture fine particles through electrostatic attraction rather than mechanical blocking, thereby maintaining larger mesh size while achieving high cleanliness degree without increasing air flow resistance
Solution Approach 2:
The patent uses composite materials by combining the mesh sheet structure with conductive coating material. The mesh sheet provides the structural framework and basic filtration capability, while the conductive coating adds electrostatic properties that enhance fine particle capture. This composite approach enables the filter to achieve both low resistance and high efficiency by leveraging the strengths of both materials
2Manufacturing precision
If electrostatic filter is used to catch fine particles, then the cleanliness degree is improved, but uncharged dust particles are not caught
Solution Approach 1:
The patent applies local quality by creating regions with different electrostatic properties on the filter surface. The conductive coating creates localized electric fields that can attract and hold charged particles, while the mesh structure provides mechanical filtration for uncharged particles. This local differentiation of function allows the filter to handle both charged and uncharged dust particles effectively
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 effectively increases airflow cleanliness by capturing both larger and smaller dust particles without increasing airflow resistance, as the conductive filter ensures efficient charging and adherence of fine particles, and the repelling electrode enhances particle capture efficiency.
Implementation Method 1
a conductive material at least partially on a surface of the mesh sheet, the conductive material being connected to the filter frame
Implementation Method 2
a repelling electrode is used to change the trajectory of charged particles
Data Source
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AI summary
A filter (35) for an electric dust collector includes: a conductive filter frame (58) for surrounding a passage of airflow along a transverse plane that traverses the passage by being supported by a casing of the electric duct collector; and a mesh sheet (59) arranged along the transverse plane, coupled to the filter frame, and having a conductive material at least partially on a surface of the mesh sheet, the conductive material being connected to the filter frame.