Ion Generation Apparatus with Opposing Needle Electrodes
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Solution Overview
Problem
Conventional ion generation apparatuses with discharge needles arranged on the same wall surface result in uneven ion distribution, making it difficult to achieve a high concentration of ions over a wide range, especially when using a sirocco fan to blow air into a room.
Innovation Solution
The apparatus includes four needle-like electrodes arranged such that their tips protrude from opposing walls of an air flow path, with specific intervals and orientations to generate both positive and negative ions, ensuring even ion distribution across a wider area by using a boosting transformer to apply high voltage and an induction electrode to facilitate corona discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If discharge needles are arranged on the same wall surface, then the structure is simple, but ion distribution becomes uneven
Solution Approach 1:
The patent transitions from arranging all discharge needles on a single wall surface (2D arrangement) to distributing needles across opposing wall surfaces (3D spatial arrangement). Specifically, first and second needle-like electrodes are arranged on a first wall surface, while third and fourth needle-like electrodes are arranged on a second wall surface opposing the first, creating a more uniform ion distribution throughout the air flow path.
2Ease of manufacture
If discharge needles are arranged on the same wall surface, then installation is easy, but ion concentration cannot be maintained over a wide range
Solution Approach 1:
The patent distributes discharge needles across opposing wall surfaces rather than confining them to a single surface. This spatial distribution allows ions to be generated throughout a wider cross-sectional area of the air flow path, enabling high ion concentration to be maintained over a broader range when air is blown into the room.
Solution Approach 2:
The patent creates different functional zones by placing discharge needles at specific positions on opposing walls. The first and second needle-like electrodes on the first wall surface and the third and fourth needle-like electrodes on the second wall surface are positioned to generate ions in complementary regions, ensuring comprehensive coverage throughout the air flow path.
3Power
If a plate-like induction electrode is added to face needle tips, then ion generation mechanism is enhanced, but ion distribution remains uneven toward discharge needle side
Solution Approach 1:
The patent replaces the single-sided plate-like induction electrode configuration with a distributed arrangement of multiple needle-like electrodes on opposing wall surfaces. This creates a more balanced electric field distribution and prevents ion concentration from being skewed toward the discharge needle side, achieving uniform ion distribution while maintaining strong ion generation capability.
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 configuration allows for a high concentration of positive and negative ions to be present over a wide range, effectively improving ion distribution and concentration in the air flow path, enhancing air purification and sterilization capabilities.
Implementation Method 1
Many of the ion generation apparatuses generate positive ions and negative ions by corona discharge
Data Source
AI summary
Each of first to fourth needle-like electrodes is arranged such that a direction of extension thereof is parallel, and generates ions by discharge. Through a space, a gas for conveying the ions generated by the first to fourth needle-like electrodes flows. Needle tips of the first needle-like electrode and the second needle-like electrode protrude from a first wall surface that forms the space, are spaced apart from each other, and are arranged in line in the space. Needle tips of the third needle-like electrode and the fourth needle-like electrode protrude from a second wall surface that forms the space and faces the first wall surface, are spaced apart from each other, and are arranged in line in the space. The first needle-like electrode and the fourth needle-like electrode generate positive ions, and the second needle-like electrode and the third needle-like electrode generate negative ions.