Evaporation Pipe Layout for Stable Ultra-Low Temperature Refrigeration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional refrigeration devices for low-temperature storage struggle to maintain stable temperatures due to inefficiencies in heat exchange and refrigerant circulation, leading to potential temperature rises during tilting or power outages.
Innovation Solution
A refrigeration device with a heat pipe system that includes a condensation unit connected to a refrigerator, a pipe unit for circulating refrigerant between the condensation and evaporation units, and an evaporation unit extending along the storage chamber walls, featuring first and second pipe conduits with specific circumference parts and junctions to enhance heat exchange and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional single pipe thermosiphon is used, then the structure is simple, but temperature stability deteriorates during tilting or power outages
Solution Approach 1:
The heat pipe is divided into multiple independent pipe conduits (first and second pipe conduits), each capable of functioning independently. This segmentation ensures that if one conduit is blocked or malfunctioning, the other can still maintain temperature stability, thereby improving reliability during tilting or power outages.
Solution Approach 2:
Different sections of the pipe conduits are positioned at different heights and locations within the storage chamber. The first pipe conduit has its evaporating section positioned higher than the second pipe conduit's evaporating section, creating local variations in heat exchange characteristics that improve overall temperature stability.
2Productivity
If the evaporation unit extends along all wall surfaces, then heat exchange efficiency is improved, but device complexity increases
Solution Approach 1:
The evaporation unit is segmented into first and second pipe conduits with distinct pathways. The first pipe conduit extends along first, second, and third wall surfaces, while the second pipe conduit extends along fourth, fifth, and sixth wall surfaces. This segmentation allows comprehensive wall surface coverage for efficient heat exchange while maintaining manageable structural complexity through modular design.
Solution Approach 2:
The pipe conduits are arranged in different spatial dimensions and orientations. The first pipe conduit is positioned higher and follows a different route than the second pipe conduit, utilizing three-dimensional space effectively to cover multiple wall surfaces without excessive complexity.
3Reliability
If pipe conduits are positioned at different heights, then refrigerant circulation is improved during tilting, but manufacturing precision requirements increase
Solution Approach 1:
The first and second pipe conduits are positioned at different local heights within the storage chamber. The first pipe conduit's evaporating section is positioned higher than the second pipe conduit's evaporating section. This local variation in positioning facilitates refrigerant circulation during tilting conditions while using achievable manufacturing tolerances.
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 system provides improved temperature stability and uniform cooling of the storage chamber by optimizing refrigerant circulation and heat exchange, even when the storage is tilted or during power outages, ensuring the preservation of sensitive materials at ultra-low temperatures.
Implementation Method 1
a condensation unit, a pipe unit, and an evaporation unit, in which the condensation unit is connected with the refrigerator such that heat exchange therewith can be performed to condense a refrigerant
Implementation Method 2
the evaporation unit extends along wall surfaces of a storage chamber, which houses a preservation object, and is attached to the wall surfaces such that heat exchange therewith can be performed to evaporate the refrigerant
Implementation Method 3
heat exchange therewith can be performed to evaporate the refrigerant
Data Source
AI summary
An evaporation unit includes a first and second pipe conduits. The first and second pipe conduits each include a near-end part, a long circumference part, a junction part, a short circumference part, and a far-end part. Around a storage chamber, the first long circumference part extends in a first direction, the first junction part turns, and the first short circumference part extends in the first or second direction. The second short circumference part extends in the first direction, the second junction part turns, and the second long circumference part extends in the first or second direction. The first and second turning part located at the same position counted from the respective near-end part sides are disposed respectively on wall surfaces facing each other.