Thermostatic container
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Solution Overview
Problem
Thermostatic containers with vacuum heat insulating materials face challenges in transmitting radio wave information due to the aluminum layer's reflection of radio waves, making it difficult to monitor and manage temperature-controlled items like investigational drugs during transport.
Innovation Solution
Incorporating a phase change material made of paraffin on the bottom and wall portions of the thermostatic container, covered with resin, and using a radio wave transmissive organic substance on the path from the inside to the outside, allowing radio waves to pass through while maintaining heat insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a vacuum heat insulating material with aluminum layer is used, then heat insulating property is improved, but radio wave transmissivity deteriorates
Solution Approach 1:
The container is divided into multiple compartments: an outer container with vacuum heat insulating material for thermal insulation, and an inner container for storing items. This segmentation allows the aluminum layer to be confined to specific regions while creating radio wave transmission paths through strategic material placement and compartment design.
Solution Approach 2:
Different regions of the container are assigned different material properties: the vacuum heat insulating material with aluminum layer provides thermal insulation in specific areas, while radio wave transmissive organic substances are placed in strategic locations to enable communication. This local differentiation resolves the contradiction by allowing both functions to coexist in different spatial zones.
2Temperature
If aluminum layer is used in cover material, then heat reflection is improved, but radio wave communication is blocked
Solution Approach 1:
A radio wave transmissive organic substance acts as an intermediary material that allows radio waves to pass through while maintaining the overall thermal insulation structure. This intermediary substance is strategically placed between the aluminum layer and the external environment to enable communication without compromising heat reflection capabilities.
Solution Approach 2:
The container employs composite material construction combining vacuum heat insulating material with aluminum layer and radio wave transmissive organic substances. This composite structure integrates materials with complementary properties: aluminum for heat reflection and organic substances for radio wave transmission, allowing both functions to operate simultaneously.
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
Enables efficient transmission of information, such as temperature data, from inside the container to the outside using cellular phones or RFID, while maintaining the temperature range of 2° C. to 8° C., facilitating effective management and quality control during transport.
Implementation Method 1
a phase change material provided on a bottom portion and a wall portion of the box body and the box lid
Implementation Method 2
a phase change material provided on a bottom portion and a wall portion of the box body and the box lid
Implementation Method 3
A vacuum heat insulating material is used in the thermostatic container to improve a heat insulating property
Implementation Method 4
a cover material including an aluminum layer formed by vapor deposition or lamination
Data Source
AI summary
Provided is a thermostatic container that improves both the communication radio wave transmissivity and keeping cold performance of a thermostatic container. A thermostatic container includes: a vacuum heat insulating container; a vacuum heat insulating lid configured to close the vacuum heat insulating container; a box body housed inside the vacuum heat insulating container; a box lid configured to close the box body; and a phase change material provided on a bottom portion and a wall portion of the box body and the box lid. An area made of a radio wave transmissive organic substance is provided on a path leading from inside of the box body to outside of the heat insulating container.