Low-Pressure Boiling Cooling System to Reduce Heat Exchanger Volume
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Solution Overview
Problem
Current cooling technologies require large volumes to efficiently discharge heat, leading to increased system size and weight, and are vulnerable to external damage and noise exposure due to the need for large heat exchangers and cooling fans.
Innovation Solution
A low-pressure boiling cooling system that reduces volume and weight by utilizing a sealed chamber with a refrigerant that boils to vapor, a vacuum pump to manage pressure, and a supplementary refrigerant tank, eliminating the need for a large heat sink and minimizing external exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a large heat sink (radiator or condenser) is used to efficiently discharge heat, then heat removal performance is improved, but system volume and weight increase
Solution Approach 1:
The patent utilizes the phase transition of refrigerant from liquid to vapor through boiling at low pressure. The refrigerant absorbs large amounts of heat during phase change within a compact sealed chamber, eliminating the need for large external heat sinks. This directly resolves the contradiction by achieving high heat removal performance through phase transition while maintaining small system volume.
Solution Approach 2:
The patent extracts and eliminates the large heat sink (radiator or condenser) from the traditional cooling system by implementing internal boiling heat transfer. The heat removal function is achieved through the refrigerant's phase change within the sealed chamber, removing the external heat dissipation component that caused volume and weight issues.
2Productivity
If a large heat exchanger and cooling fan are used to discharge heat, then cooling capacity is improved, but vulnerability to external damage and noise exposure increases
Solution Approach 1:
The patent removes the large external heat exchanger and cooling fan from the system by implementing internal boiling heat transfer. The sealed chamber containing the refrigerant is the only external component, which is small in size and not vulnerable to external damage or noise issues, while still achieving high cooling capacity through phase change.
Solution Approach 2:
The patent uses a sealed chamber with a small exhaust duct instead of large exposed heat exchangers. This sealed structure protects the refrigerant system from external damage while minimizing noise exposure, as the small duct does not require large cooling fans that are typically noisy and vulnerable.
3Productivity
If traditional cycle system with refrigerant compression is used, then heat transfer is improved, but system complexity and component count increase
Solution Approach 1:
The patent extracts and eliminates the compressor and condenser from the traditional refrigeration cycle by implementing direct boiling heat transfer. The system uses only a sealed chamber with refrigerant and a small exhaust duct, removing complex compression and phase change components while maintaining effective heat transfer through low-pressure boiling.
Solution Approach 2:
The patent replaces the mechanical compression system with a thermal field-based boiling process. Instead of using a compressor to circulate and compress refrigerant, the system relies on natural convection and phase change within the sealed chamber, eliminating mechanical complexity while achieving effective heat transfer.
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 efficiently removes heat while reducing system size and weight, minimizing damage from external impacts and noise exposure by using a small exhaust duct and optimizing heat transfer through phase change of the refrigerant.
Implementation Method 1
a sealed chamber (100) containing a refrigerant (10) and configured to convert the refrigerant (10) into vapor (11) by boiling the refrigerant (10) therein
Implementation Method 2
convert the refrigerant (10) into vapor (11) by boiling the refrigerant (10) therein
Implementation Method 3
a vacuum pump (300) connected to the sealed chamber (100) and configured to lower pressure inside the sealed chamber (100) by discharging the vapor (11) into an atmosphere
Data Source
AI summary
A low-pressure boiling cooling system is provided. The low-pressure boiling cooling system includes a sealed chamber containing a refrigerant and configured to convert the refrigerant into vapor by boiling the refrigerant therein, a high-temperature portion located inside the sealed chamber and configured to boil the refrigerant, and a heating portion located outside the sealed chamber and configured to generate heat, a vacuum pump connected to the sealed chamber and configured to lower pressure inside the sealed chamber by discharging the vapor into an atmosphere, a refrigerant tank containing a supplementary refrigerant, and a refrigerant transfer portion configured to supply the supplementary refrigerant from the refrigerant tank into the sealed chamber, wherein the high-temperature portion is configured to receive heat generated from the heating portion and directly transfer heat to the refrigerant in the sealed chamber.