Capacitive Element Liquid Dielectric Bubble Exhaust Structure
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Solution Overview
Problem
Capacitive elements using liquids as dielectrics face reliability issues due to air bubbles adhering to electrodes, causing changes in capacitance.
Innovation Solution
A capacitive element with a storage container featuring an inlet and outlet for the liquid dielectric and an upper wall with an opening section to exhaust air bubbles, along with a bubble guide portion to ensure reliable bubble removal, preventing capacitance changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a liquid is used as the dielectric in a capacitive element, then the capacitance can be adjusted and maintained, but air bubbles may flow into the container or be generated inside and adhere to the electrodes, causing capacitance changes and reducing reliability
Solution Approach 1:
The invention extracts and removes air bubbles from the liquid dielectric by providing a vent hole in the container wall and a discharge hole in the lid, allowing bubbles to escape from the capacitive element while maintaining the liquid dielectric between the electrodes
Solution Approach 2:
The invention introduces an intermediary structure (vent hole and discharge hole) that mediates between the liquid dielectric and the external environment, allowing air bubbles to be removed while preventing direct contact between the electrodes and external factors
2Ease of operation
If air bubbles are present in the storage container, then the liquid flow may be disrupted and vortexes generated, but the bubbles will not escape and will adhere to electrodes, changing capacitance
Solution Approach 1:
The invention extracts air bubbles from the liquid flow path by providing a vent hole in the container wall and a discharge hole in the lid positioned to capture and remove bubbles that form during liquid circulation
Solution Approach 2:
The invention performs preliminary action by providing bubble removal pathways before bubbles can adhere to the electrodes and cause capacitance changes, ensuring continuous reliable operation
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 prevents capacitance changes by ensuring air bubbles are exhausted, maintaining reliability and stability in capacitive elements.
Implementation Method 1
air bubbles floating inside the storage container are guided to the opening section
Implementation Method 2
an inner surface of the upper wall may be provided with a bubble guide portion which is inclined upward as it goes from the outer peripheral portion of the upper wall toward the opening section and guides air bubbles to the opening section
Data Source
AI summary
A capacitive element using a liquid as a dielectric, whereby the capacitance is prevented from changing. The capacitive element is equipped with: a storage container that has an inlet port for introducing a liquid serving as a dielectric, has an outlet port for discharging the liquid, and is filled with the liquid; and at least one pair of electrodes that are provided in the storage container and face each other, wherein an opening section for exhausting air bubbles in the storage container is formed in an upper wall of the storage container.