PVT Heating and Cooling Device with Expanded Cooling Channel
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Solution Overview
Problem
Current PVT measuring instruments suffer from poor cooling efficiency due to limited airflow, heat leakage during heating, and instability during pressurization, leading to inaccurate measurements.
Innovation Solution
A heating and cooling device with a conductive structure and separate housing forming a large cooling flow channel, combined with a heat insulation structure and four struts for improved stability, enhances heating and cooling capabilities and machine stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If airflow is introduced through a narrow groove in the heating and cooling unit, then the structure is simple, but the cooling effect is poor due to limited airflow
Solution Approach 1:
The heating and cooling unit is divided into separate components: a conductive structure with test space and a housing with cooling flow channel. This segmentation allows the cooling channel to be independently designed with larger cross-section for improved airflow, while the conductive structure maintains its heating function through the attached heating pipe.
Solution Approach 2:
The cooling flow channel is designed as a three-dimensional space between the conductive structure and the housing, rather than a two-dimensional groove. This dimensional expansion significantly increases the airflow capacity and cooling efficiency while maintaining structural simplicity.
2Device complexity
If the heating and cooling unit is designed with only a groove for heating pipe installation, then the device complexity is low, but heat leakage occurs during heating process
Solution Approach 1:
The conductive structure serves as an intermediary between the heating pipe and the test space. It efficiently conducts heat from the heating pipe to the plastic material while its integrated design with the housing provides thermal insulation, preventing heat leakage to the surrounding environment.
3Device complexity
If the PVT measuring instrument lacks proper structural support, then the device complexity is low, but the machine stability is poor during pressurization
Solution Approach 1:
The structural support system is segmented into multiple struts distributed around the test space. This segmentation provides balanced structural reinforcement, preventing machine shaking during pressurization while maintaining ease of assembly and reasonable 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 effective and rapid cooling, maintains temperature stability, and improves measurement accuracy by preventing heat dissipation and enhancing structural integrity.
Implementation Method 1
an electric heating pipe attached on the main body for heating the testing plastic material in the test space through the main body
Implementation Method 2
a housing disposed outside the conductive structure and separated from the main body to form a cooling flow channel, wherein the housing has an air inlet and an air outlet for cooling airflow to enter and exit the cooling flow channel to cool the testing plastic material
Data Source
AI summary
A heating and cooling device includes a conductive structure, an electric heating pipe and a housing. The housing has a main body and a test space formed in the main body, the electric heating pipe is attached on the main body and used for heating a testing plastic material in the test space, and the housing is covered outside the conductive structure and separated from the main body to form a cooling flow channel. The housing and the main body are separated without contacting each other, so that the dissipation of the heat energy of the electric heating pipe through the housing can be reduced in the heating process, and the function of thermal preservation can be provided. Moreover, the cooling effect can be improved through the larger cooling flow channel during the cooling process. A PVT equipment using the heating and cooling device is further provided.