Embedded Thermocouple Heater for Uniform Cigarette Vaporization
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Solution Overview
Problem
Conventional cigarette-type electronic cigarette devices face challenges in uniformly controlling the heating temperature of their heat generating heaters due to inaccuracies in temperature sensor design, leading to inconsistent vapor production and misuse risks of nicotine solutions.
Innovation Solution
A heat generating heater with a ceramic main body and embedded temperature sensing unit, such as a thermocouple or spiral bimetal, is designed to accurately measure and control the heating temperature, ensuring uniform heating by integrating the sensing unit directly into the heater's structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a thin film type temperature sensor is disposed on the circumferential surface of the heat generating heater to control heating temperature, then the device can sense temperature based on resistance value, but it is difficult to accurately design the sensor pattern according to the temperature to be controlled, resulting in non-uniform temperature control
Solution Approach 1:
The temperature sensing unit is merged with the heat generating heater by embedding it inside the heater body rather than disposing it on the external surface. This integration ensures that the sensing element is positioned at the exact location where temperature control is critical, allowing accurate measurement of the actual heating temperature and enabling uniform temperature control throughout the heater.
Solution Approach 2:
The patent introduces a thermal conductor as an intermediary substance to fill the space between the heat generating heater and the temperature sensing unit. This thermal conductor mediates heat transfer from the heater to the sensing element, ensuring that the sensor accurately reflects the heater's temperature while maintaining proper thermal coupling.
2Reliability
If a cigarette-type electronic cigarette device is designed to heat a cigarette through a heat generating heater to generate smoking vapor, then the taste similar to conventional cigarettes can be felt and misuse of liquid nicotine solution is prevented, but the temperature of the heat generating heater cannot be uniformly controlled due to sensor design issues
Solution Approach 1:
The temperature sensing unit is integrated directly into the heat generating heater structure, allowing the system to maintain reliable prevention of nicotine solution misuse through the cigarette heating mechanism while simultaneously achieving uniform temperature control through accurate embedded sensing.
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
This solution allows for precise and uniform heating temperature control, enhancing vapor production consistency and reducing the risk of nicotine solution misuse by embedding a reliable temperature sensing mechanism within the heater.
Implementation Method 1
a heat generating unit disposed to surround a circumferential surface of the main body to generate heat so that the inside of the cigarette is heated
Implementation Method 2
the thin film type temperature sensor senses a temperature based on a resistance value
Implementation Method 3
the temperature sensing unit may be a thermocouple
Implementation Method 4
the spiral bimetal may include a stem portion having a predetermined length, a wound portion wound many times along a longitudinal direction of the stem portion from an end portion of the stem portion, and an extending portion extending from an end portion of the wound portion to protrude to the outside of the arrangement hole by a predetermined length, and the extending portion may come into contact with or not come into contact with a contact terminal formed in an outer surface of the heat generating heater by being bent in one direction or return to an original according to a temperature of the heat generating unit
Data Source
AI summary
Provided is a heat generating heater for a cigarette-type electronic cigarette device. A heat generating heater for a cigarette-type electronic cigarette device is configured by at least a portion of the length being inserted into a cigarette and comprises: a main body which is made of a ceramic material and has an end portion pointed for penetration into the cigarette; a heat generating unit which is disposed to surround the circumferential surface of the main body to generate heat for heating the inside of the cigarette; an arrangement hole which is formed in the main body along the longitudinal direction thereof; and a temperature sensing unit which is disposed in the arrangement hole for measuring a heating temperature of the heat generating unit.