Cold-End Heat Exchanger Layout Using Perpendicular Evaporation Pipes
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Solution Overview
Problem
Traditional semiconductor refrigerators face inefficiencies in heat exchange at the cold end, leading to low heat conduction and exchange efficiency, bulky designs, increased noise, and reduced reliability due to the use of heat radiators for forced convection.
Innovation Solution
A cold end heat exchanging device with a configuration of refrigerant pipelines that allow phase-change heat exchange, featuring evaporation sections arranged in perpendicular planes for enhanced evaporation area and efficient heat transfer, integrated into a semiconductor refrigerator to improve cold dissipation efficiency and energy efficiency while minimizing space usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a heat radiator with forced convection is used at the cold end, then heat exchange capability is improved, but the device becomes bulky and occupies much space
Solution Approach 1:
The refrigerant pipelines are arranged in two perpendicular planes (first plane perpendicular to rear surface, second plane parallel to rear surface), transforming the heat exchange structure from a single-plane bulky radiator into a multi-dimensional compact pipeline network that achieves high heat exchange capability while minimizing occupied space
2Power
If a heat radiator with forced convection is used, then heat exchange capability is improved, but noise increases and reliability reduces due to continuous fan operation
Solution Approach 1:
The invention replaces the mechanical forced convection system (heat radiator + fan) with a phase-change heat exchange system using refrigerant pipelines. The refrigerant undergoes phase change (liquid to gas) in the evaporation sections, providing high heat exchange capability without requiring mechanical moving components, thereby eliminating fan noise and improving reliability
3Power
If traditional heat exchange methods are used, then heat exchange function is achieved, but heat conduction and exchange efficiency is low
Solution Approach 1:
The invention utilizes phase change (evaporation) of the refrigerant in the evaporation sections of the pipelines. The refrigerant absorbs heat from the cold end heat exchanging part during phase change from liquid to gas, achieving high heat conduction and exchange efficiency that overcomes the limitations of traditional solid-to-solid heat conduction methods
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 significantly enhances heat dissipation efficiency and energy efficiency of the semiconductor refrigerator by maximizing the effective evaporation area and simplifying the production and assembly processes, reducing noise, and improving reliability.
Implementation Method 1
a cold end heat exchanging part (10) which defines an inner cavity or conduit for containing a refrigerant existing in both gas and liquid phases and is configured to allow the refrigerant to flow therein and undergo phase-change heat exchange
Implementation Method 2
an evaporation section (21) which is downwardly bent and extends in a vertical plane and has a closed tail end
Implementation Method 3
The cold end heat exchanging device comprises: a cold end heat exchanging part (10) which defines an inner cavity or conduit for containing a refrigerant existing in both gas and liquid phases and is configured to allow the refrigerant to flow therein and undergo phase-change heat exchange
Data Source
AI summary
A cold end heat exchanging device and a semiconductor refrigerator having the cold end heat exchanging device. The cold end heat exchanging device comprises a cold end heat exchanging part and a plurality of refrigerant pipelines. The cold end heat exchanging part defines an inner cavity or a conduit for containing a gas-phase and liquid-phase co-existing refrigerant. Each refrigerant pipeline is provided with an evaporation section that is downwards bent and extends in a vertical plane and has a closed tail end, and a connection section that is upwards bent and extends from a starting end of the evaporation section and is connected to the inner cavity or the conduit. Evaporation sections of at least some refrigerant pipelines of the plurality of refrigerant pipelines are distributed in two vertical planes that are perpendicular to each other.