Tensioned Cord Sensor Positioning for Heat Treatment Accuracy
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Solution Overview
Problem
Conventional temperature sensors face challenges in accurately fixing temperature detecting elements, leading to inaccuracies in temperature measurement and control during high-accuracy heat treatments, due to the weight and positioning issues of heat receiving bodies, which affect the reliability and precision of temperature control.
Innovation Solution
A temperature sensor with a positioning supporting mechanism that uses tensioned cords to accurately position and support temperature detecting elements within a protective tube, ensuring precise placement and direction, thereby improving temperature measurement and control accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a heat receiving body is provided to improve detection accuracy, then temperature measurement accuracy is improved, but the heat receiving body's weight makes it difficult to arrange with high accuracy and may cause breakage
Solution Approach 1:
The patent introduces a positioning supporting mechanism as an intermediary between the heat receiving body and the protective tube. This mechanism includes positioning members that extend from the protective tube to support the heat receiving body at a predetermined position, thereby eliminating the need for the heat receiving body to be self-supported and arranged with high precision through its own weight distribution.
2Measurement precision
If the size of the heat receiving body is increased to reduce temperature characteristic difference, then temperature control accuracy is improved, but its weight increases making accurate arrangement difficult
Solution Approach 1:
The positioning supporting mechanism serves as a mediator that decouples the relationship between the heat receiving body size and arrangement difficulty. By providing external support through positioning members, the system can use appropriately sized heat receiving bodies for accurate temperature control without suffering from the arrangement difficulties that would result from increasing their size and weight.
3Adaptability or versatility
If thermocouples are provided at tip end portions of branch tubes in a multipoint temperature sensor, then temperature measurement at multiple points is enabled, but it is not easy to fix the thermocouples at accurate positions reliably
Solution Approach 1:
The patent applies segmentation by dividing the temperature measurement function into multiple independent branch tubes, each with its own positioning supporting mechanism. This allows each thermocouple to be independently positioned and supported at accurate locations, maintaining manufacturing precision while enabling multipoint measurement capability.
Solution Approach 2:
The positioning supporting mechanism acts as an intermediary that facilitates reliable fixation of thermocouples at accurate positions in each branch tube. The positioning members provide structured support that ensures precise positioning, solving the problem of difficult thermocouple fixation while maintaining multipoint measurement versatility.
Data Source
AI summary
A temperature detecting element is fixed reliably at an accurate position to enable improvement in a rising characteristic of a temperature and high-accuracy temperature control. Provided is a temperature sensor including a temperature detecting element detecting a temperature in a branch tube branched from a main tube and a positioning supporting mechanism positioning and supporting the temperature detecting element. Tension is applied to a cord of the temperature detecting element. The positioning supporting mechanism is supported by the tensioned cord to position and support the temperature detecting element. The positioning supporting mechanism includes a supporting tube supporting the temperature detecting element, a positioning member supporting the supporting tube and fixed at a set position, and a tensioner applying tension to the cord of the temperature detecting element.