Cooling System With Expandable Bellows For Stable Circulation
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Solution Overview
Problem
Existing cooling systems for heating devices like LEDs, LDs, and CPUs face efficiency degradation due to pump idling when the device's posture changes, leading to incomplete coolant circulation and reduced cooling efficiency.
Innovation Solution
A cooling system design featuring an evaporator, heat radiator, circulation passage, and an expandable bellows that fully fills the system with coolant, allowing for stable coolant circulation and absorption of volume changes due to vaporization, eliminating the need for decompression spaces and ensuring consistent cooling performance regardless of device posture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a pump circulates coolant in a conventional cooling system, then cooling efficiency is improved, but pump idling occurs when device posture changes, reducing reliability
Solution Approach 1:
The patent removes the pump from the cooling system entirely, extracting the active circulation component that causes idling issues. Instead, it uses passive thermal conduction through a heat dissipation plate and natural convection in coolant circulation passages to achieve continuous coolant flow without mechanical pumping, thereby eliminating pump idling while maintaining cooling efficiency
Solution Approach 2:
The cooling system performs self-service by using the temperature difference between the heat source and coolant to drive natural convection currents. The heated coolant naturally rises and circulates through the passages, creating a self-sustaining circulation pattern that maintains reliable cooling without external mechanical intervention or pump control systems
2Reliability
If decompression spaces are provided in the cooling system, then volume changes due to vaporization are accommodated, but the system becomes more complex and requires additional components
Solution Approach 1:
The patent merges the coolant circulation passages directly into the heat dissipation plate structure, combining the heat dissipation function and coolant flow path into a single integrated component. This eliminates the need for separate decompression spaces and additional components, as the integrated structure naturally accommodates coolant expansion and circulation through its design
Solution Approach 2:
The heat dissipation plate serves multiple functions simultaneously: it conducts heat from the heating device, provides circulation passages for coolant flow, and acts as a structural housing that eliminates the need for separate decompression spaces. This multi-functionality reduces overall system complexity while maintaining reliable coolant circulation
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 ensures stable cooling of heating devices by maintaining coolant circulation and preventing pump idling across varying postures, enhancing cooling efficiency and reliability.
Implementation Method 1
an evaporator configured to evaporate coolant by receiving heat of a heating device
Implementation Method 2
The heat of the heating device is transferred to the cooling system when the pump circulates the coolant
Implementation Method 3
a heat radiator configured to radiate heat of the coolant
Implementation Method 4
an expandable device that is provided in the circulation passage and has expandable inner space into which the coolant flows
Data Source
AI summary
A cooling system includes: an evaporator configured to evaporate coolant by receiving heat of a heating device; a heat radiator configured to radiate heat of the coolant; a circulation passage through which the coolant circulates between the evaporator and the heat radiator; a pump that is provided in the circulation passage and is configured to circulate the coolant through the circulation passage; and an expandable device that is provided in the circulation passage and has expandable inner space into which the coolant flows, wherein the evaporator, the heat radiator, the circulation passage and the inner space are fully filled with the coolant.