Ejection Surge Absorber Module with Low-Melting Contact
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Solution Overview
Problem
Conventional surge absorbers can overheat and cause explosions or fires due to delayed activation, failing to quickly open the circuit and protect electrical equipment from surge damage.
Innovation Solution
An explosion-proof and flameproof ejection type safety surge-absorbing module featuring a resilient metallic plate welded to an electrode via a contact component with a low melting point, which is ejected when overheated, creating an open circuit and preventing further damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a thermal fuse is added to cause an open circuit when surge or high temperature is detected, then the surge absorber can be protected, but the circuit may not open in a short period of time allowing the surge absorber to overheat and cause explosion or fire
Solution Approach 1:
The patent changes the melting point parameter of the contact component to a low temperature range, enabling rapid response when surge occurs. The resilient metallic plate is designed to be ejected when the contact component melts at this low temperature, achieving fast circuit opening without waiting for thermal fuse activation.
Solution Approach 2:
The contact component acts as an intermediary element between the surge absorber and the circuit. It transfers the thermal effect of surge to the resilient metallic plate, which then physically ejects to open the circuit. This intermediary mechanism enables faster response than direct thermal fuse activation.
2Speed
If the surge absorber is designed to cause open circuit quickly, then protection speed is improved, but the risk of overheating and explosion increases without proper containment
Solution Approach 1:
The protective member (base and upper lid) is pre-installed to contain the surge absorber and contact components. When surge causes rapid heating and ejection of the resilient metallic plate, the protective member prevents explosion and fire by containing the thermal energy and physical movement, cushioning the harmful effects before they can spread.
Solution Approach 2:
The protective member is designed in advance to counteract the potential explosion and fire hazards. The structure includes a base with partitions forming a chamber and an upper lid that together create a containment system that actively prevents the spread of thermal energy and physical debris when surge absorption fails.
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 module effectively prevents overheating and explosion by quickly opening the circuit without damaging the surge-absorbing module, ensuring the safety of electrical equipment and preventing fires or explosions.
Implementation Method 1
the contact component which shall be melted when the electrode is overheated
Data Source
AI summary
An explosion-proof and flameproof ejection type safety surge-absorbing module includes a protective member and a surge-absorbing unit. The protective member includes a base and an upper lid coupled with the base. The base has two corresponding partitions extending upwards. The surge-absorbing unit includes a body, two connecting leads, and a resilient metallic plate. The body has two sides defining two electrode surfaces. One of the electrode surfaces is connected with one of the connecting leads. The resilient metallic plate has a first end welded to the electrode surface with a contact component and a second end curved and striding across an outer side of one of the partitions to penetrate through the bottom of the base. When the body of the surge-absorbing unit is overheated due to high temperature caused by a surge, the contact component will melt so the resilient metallic plate is ejected away from the electrode.