Printing Device Wall Structure for Electrolysis Liquid Containment
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Solution Overview
Problem
In printing devices, the scattering of electrolysis liquid from an electrolytic capacitor within the casing is a concern due to the explosion-proof valve's opening, which can lead to internal pressure release and liquid dispersion.
Innovation Solution
The design incorporates a specific region with a recessed or protruding portion on the second wall to guide and accumulate the electrolysis liquid discharged from the explosion-proof valve, preventing it from scattering within the casing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an electrolytic capacitor with an explosion-proof valve is mounted on the circuit board, then the reliability of the printing device is improved, but the electrolysis liquid may scatter within the casing when the explosion-proof valve opens
Solution Approach 1:
A guide wall is introduced as an intermediary structure between the electrolytic capacitor and the casing. The guide wall has a guide portion that directs the electrolysis liquid from the explosion-proof valve toward a collection portion, preventing the liquid from scattering freely within the casing while maintaining the capacitor's reliability function
Solution Approach 2:
The harmful effect of electrolysis liquid scattering is extracted and isolated by creating a separate collection portion in the guide wall. This collection portion captures the liquid at its source and contains it, removing the scattering problem from the main casing environment while preserving the capacitor's operational reliability
2Stability of the object's composition
If the explosion-proof valve opens to release internal pressure, then the safety of the electrolytic capacitor is improved, but the electrolysis liquid disperses within the casing
Solution Approach 1:
The guide wall acts as a mediator structure that intercepts the electrolysis liquid immediately after it exits the explosion-proof valve. The guide portion channels the liquid along a controlled path to the collection portion, preventing uncontrolled dispersion while allowing the safety function of the explosion-proof valve to operate
Solution Approach 2:
The potentially harmful scattering of electrolysis liquid is converted into a controlled flow by the guide wall structure. The liquid's natural discharge path is redirected to follow the guide portion into the collection portion, transforming the harmful dispersion into a contained, predictable flow that can be managed within the designed structure
Data Source
AI summary
A printing device includes: a casing, a circuit board, an electrolytic capacitor, an explosion-proof valve, a first wall, a second wall, and a specific region. The electrolytic capacitor is connected to the circuit board. The electrolytic capacitor includes a sleeve portion containing electrolysis liquid therein and has an axis defining an axial direction. The sleeve portion has one end portion, another end portion, and a peripheral surface extending therebetween. The explosion-proof valve is provided at the one end portion. The first wall is disposed in the casing and faces the explosion-proof valve. The second wall extends from the first wall and faces at least a portion of the peripheral surface. The specific region is provided in the second wall and has one of a recessed portion and a protruding portion. The recessed portion is recessed away from the peripheral surface. The protruding portion protrudes toward the peripheral surface.