Dual Cooling Arrangement With Flow-Loss Backup Protection
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Solution Overview
Problem
Current cooling systems for electronic devices face challenges such as large and bulky flowmeters, inability to detect cooling losses at a component level, and potential rapid failure leading to data loss due to overheating.
Innovation Solution
A cooling arrangement comprising a primary cooling device, a secondary cooling device, and a processor that monitors the flow of cooling fluid and activates the secondary cooling device or initiates a shutdown when insufficient flow is detected, using a compact flow detection device to ensure continuous operation and data safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If current flowmeters are used to monitor cooling fluid flow, then cooling flow can be detected, but the flowmeters are large and bulky, occupying excessive space in racks with limited rack units
Solution Approach 1:
The patent replaces traditional mechanical flowmeters with an optical detection system. A light source emits light through the cooling fluid conduit, and a light detector measures light absorption or transmission changes to determine flow rate. This substitution eliminates bulky mechanical components while maintaining accurate flow measurement capability.
Solution Approach 2:
The patent introduces cooling fluid itself as an intermediary medium for flow detection. By measuring the optical properties (absorption, transmission, scattering) of the cooling fluid under different flow conditions, the system indirectly detects flow rate without requiring direct mechanical interaction with the fluid. This allows for compact sensor integration.
2Measurement precision
If flow indicators monitor cooling flow for the rack as a whole, then overall cooling delivery can be tracked, but cooling losses at the level of a single component cannot be properly detected
Solution Approach 1:
The patent divides the monitoring function into modular optical sensors that can be integrated at individual component levels. Each component equipped with this optical flow detection capability independently monitors its own cooling fluid flow, enabling component-level detection without requiring a complex centralized monitoring system. The segmentation allows parallel, simple monitoring units rather than one complex central unit.
Solution Approach 2:
The patent enables each component to autonomously monitor its own cooling flow status through integrated optical sensors. The component's cooling system self-detects flow abnormalities and can trigger local alarms or shutdown procedures without requiring external monitoring infrastructure. This self-service approach simplifies the overall system architecture while achieving precise component-level monitoring.
3Reliability
If rapid shutdown is implemented upon cooling failure detection, then overheating can be prevented, but important information and customer data may be lost
Solution Approach 1:
The patent implements preliminary cooling verification before critical overheating occurs. Optical flow sensors continuously monitor cooling fluid flow and detect abnormalities in advance, allowing the system to initiate gradual shutdown procedures or alert operators before temperature reaches dangerous levels. This preliminary detection and response prevents the need for abrupt emergency shutdowns that would cause data loss.
Solution Approach 2:
The patent establishes a continuous feedback loop where optical flow sensors provide real-time cooling status information to the control system, which adjusts operation accordingly. When flow degradation is detected, the system can gradually reduce load, activate backup cooling, or initiate controlled shutdown sequences. This feedback-based adaptive response maintains reliability while minimizing data loss compared to fixed rapid shutdown thresholds.
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 effectively prevents overheating and data loss by activating secondary cooling mechanisms or shutting down the device safely, even in cases of primary cooling failure, while being compact and cost-effective.
Implementation Method 1
a primary cooling device adapted to be thermally connected to the electronic device, to receive the cooling fluid from the fluidic input line and to transfer heat from the electronic device to the cooling fluid
Implementation Method 2
a flow detection device operable to monitor a flow of the cooling fluid in the cooling fluid circuit
Implementation Method 3
a secondary cooling device adapted to be thermally connected to the electronic device and operable to absorb and dissipate heat from the electronic device
Data Source
AI summary
A cooling arrangement for an electronic device comprises a primary cooling device and a secondary cooling device. The primary cooling device includes a fluidic input line receiving a cooling fluid from a cooling fluid source and a fluidic output line returning the cooling fluid toward a drain. The primary cooling device is thermally connected to the electronic device, receives the cooling fluid from the fluidic input line and transfers heat from the electronic device to the cooling fluid before returning the cooling fluid via the fluidic output line. A flow detection device monitors a flow of the cooling fluid in the primary cooling device. The secondary cooling device is thermally connected to the electronic device. A processor activates the secondary cooling device to absorb and dissipate heat from the electronic device when the flow detection device detects a lack of flow of the cooling fluid in the primary cooling device.