Boiling Cooler Structure With Separate Refrigerant Return Paths
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Solution Overview
Problem
Boiling coolers experience a rapid decrease in cooling performance due to refrigerant drying on the inner surface of the boiling part, especially when the external fluid is at a low temperature, leading to inhibited refrigerant liquid movement and reduced heat transfer efficiency.
Innovation Solution
A boiling cooler design with a boiling part and a condensing part that includes a heat conductive portion connecting the first wall to the second wall through an accommodation space, allowing direct heat transfer from the heating elements to an external fluid, and separate paths for refrigerant gas and liquid movement to prevent inhibition and enhance heat exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the amount of heat input increases and external fluid is at low temperature, then the amount of vaporized refrigerant increases, but the inner surface of the boiling part dries due to insufficient condensed refrigerant liquid return
Solution Approach 1:
The patent divides the single refrigerant passage into two separate passages: a refrigerant gas passage for vaporized refrigerant to flow to the condensing part, and a refrigerant liquid passage for condensed refrigerant liquid to return to the boiling part. This segmentation prevents the downward flow of refrigerant liquid from being inhibited by rising refrigerant gas, ensuring sufficient liquid supply to the boiling part even when vaporization increases due to high heat input or low external fluid temperature.
2Device complexity
If refrigerant gas and refrigerant liquid move in the same path, then the structure is simplified, but the downward movement of refrigerant liquid is inhibited by rising refrigerant gas
Solution Approach 1:
The patent segments the refrigerant circulation path into two separate passages within the boiling cooler: one passage for refrigerant gas flow and another for refrigerant liquid flow. This segmentation eliminates the harmful interaction between upward-moving gas and downward-moving liquid, preventing flow inhibition while maintaining a relatively compact structure.
3Power
If the inner surface of the boiling part dries, then vaporization cooling cannot be performed, but this occurs when heat input increases and condensed refrigerant liquid return is insufficient
Solution Approach 1:
By separating the refrigerant gas passage and refrigerant liquid passage, the patent ensures that condensed refrigerant liquid can return to the boiling part without being blocked by rising vapor. This guarantees continuous supply of liquid refrigerant to the inner surface of the boiling part, preventing drying even under high heat input conditions and maintaining reliable vaporization cooling.
Solution Approach 2:
The patent introduces a heat conductive portion as an intermediary element that directly connects the heating element to the external fluid passage. This heat conductive portion provides an alternative heat transfer path, reducing the burden on the refrigerant circulation system and helping maintain stable operation even when vaporization rates increase.
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 design effectively reduces or prevents rapid cooling performance degradation by maintaining refrigerant liquid flow and enhancing heat transfer efficiency even at low external fluid temperatures, ensuring consistent cooling performance.
Implementation Method 1
a boiling part (110) to boil the refrigerant (1)
Implementation Method 2
a condensing part (220) to condense the refrigerant gas (1a)
Implementation Method 3
a heat conductive portion (19) to connect the first wall (14) to the second wall (15) through the accommodation space (11)
Data Source
AI summary
A boiling cooler includes a boiling part including an accommodation space to accommodate a refrigerant, a refrigerant gas outlet, and a refrigerant liquid inlet, and a condensing part including a refrigerant passage and an external passage. The boiling part includes a first wall to which a heating element is mounted, a second wall facing the first wall via the accommodation space and adjacent to the external passage, and a heat conductive portion to connect the first wall to the second wall through the accommodation space.