Barrel-Shaped Surge Protector With Integrated Temperature Sensor
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Solution Overview
Problem
Traditional surge protection devices occupy large space, are not fireproof or explosion-proof, and fail to effectively protect power systems from transient overvoltage, often resulting in circuit cutoff or fire.
Innovation Solution
A barrel-shaped surge protection device with a varistor and cylindrical temperature protector, featuring a compact design that is fireproof and explosion-proof, incorporating a barrel-shaped housing, varistor chip, and temperature protector with independent leading feet for over-temperature protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If traditional planar surge protection devices are used, then the protective function against transient surge is provided, but the occupied space is large
Solution Approach 1:
The patent applies spheroidality by transforming the traditional planar rectangular surge protection device into a barrel-shaped (cylindrical) structure. This curved geometry reduces the occupied space from a flat planar form to a compact three-dimensional cylindrical form, while maintaining the core protective function through the integrated varistor and temperature protector components arranged within the curved housing.
2Reliability
If traditional surge protection devices are used, then the device structure is simple, but the device is not fireproof or explosion-proof
Solution Approach 1:
The patent employs composite materials by combining the varistor chip, temperature protector, and housing into an integrated barrel-shaped assembly. The housing material and internal component arrangement create a composite structure that provides both fireproof and explosion-proof capabilities while maintaining a relatively simple overall device form factor.
3Reliability
If traditional surge protection devices are used, then the basic protective function is provided, but over-temperature protection is not available
Solution Approach 1:
The patent merges multiple protective functions into a single integrated barrel-shaped device. The temperature protector is combined with the varistor chip and housing to form one unified component that simultaneously provides surge protection and over-temperature protection, eliminating the need for separate protective devices and simplifying the overall circuit configuration.
4Measurement precision
If the temperature protector is arranged in the barrel space of the barrel-shaped varistor, then accurate temperature sensing is achieved, but the device complexity increases
Solution Approach 1:
The patent applies the nested doll principle by placing the temperature protector inside the barrel space of the barrel-shaped varistor. This nested arrangement allows the temperature sensing component to be positioned centrally within the varistor structure, enabling accurate temperature measurement of the varistor chip while utilizing the existing barrel-shaped geometry to minimize additional device complexity.
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 provides enhanced security and reliability by ensuring the device is fireproof and explosion-proof, effectively protecting against overtemperature conditions without occupying excessive space, and allowing for accurate temperature sensing without external interference.
Implementation Method 1
the cylindrical temperature protector is arranged in the barrel space of the barrel-shaped varistor... providing over-temperature protection
Implementation Method 2
The existing ZnO varistor (Metal Oxide Varistors, MOV) has specific nonlinear current-voltage characteristic... current (I) has a nonlinear relationship with voltage (V), which is called nonlinearity parameter
Data Source
AI summary
The invention provides a barrel-shaped fireproof and explosion-proof surge protection device with the function of over-temperature protection, comprising a barrel-shaped housing, a barrel-shaped varistor and a cylindrical temperature protector, wherein the barrel-shaped housing houses the outer wall of the barrel-shaped varistor, the barrel-shaped varistor comprises a barrel-shaped varistor chip, an outer electrode, and an inner electrode, wherein the outer electrode is connected with an outer pin while the inner electrode is connected with an inner pin, the cylindrical temperature protector is arranged in the barrel space of the barrel-shaped varistor and is provided with two leading foots which are led out independently, or one of which is connected with the inner electrode of the barrel-shaped varistor and is led out, or one of which is connected with the inner electrode of the barrel-shaped varistor but is not led out.