High-Frequency Jet Impingement Liquid Cooling Plate High-Frequency Jet Impingement Liquid Cooling Plate (also commonly
referred to as Jet Impingement Cold Plate) is a special liquid
cooling solution for ultra-high heat flux and ultra-fast
temperature uniformity. Its core mechanism is to achieve extreme
heat dissipation by directly impinging the inner wall of the
heating surface with high-frequency, high-speed, and high-pressure
micro-jets. I. Core Principle (Essential Difference from Traditional Flow
Channels) Traditional Liquid Cooling Plate: Coolant flows in parallel within enclosed channels for heat
exchange, featuring thick thermal boundary layer, high thermal
resistance, and prone to hot spots at distant positions. High-Frequency Jet Impingement Type: - Coolant passes through a dense array of micro-nozzles (diameter
0.1–1 mm)
- Impinges vertically at high speed onto the inner wall of the cold
plate (heating surface)
- Instantly breaks the thermal boundary layer, increasing local heat
transfer coefficient by 5–10 times
- Fluid diffuses rapidly and drains laterally, achieving extremely
uniform temperature across the whole area (temperature difference
< ±1℃)
II. Typical Structure - Upper Chamber (Distribution Chamber): stabilizes pressure and
distributes coolant evenly to nozzles
- Nozzle Plate: core component with hundreds to thousands of
precision micro-holes (high-frequency jet array)
- Impingement Chamber (Heat Exchange Zone): jet impingement and
intensive convective heat transfer
- Liquid Collection Chamber / Drainage Channel: quickly discharges
the heat-absorbed coolant
III. Key Technical Features Extremely High Heat Dissipation Capacity Heat flux density: 200–1000 W/cm² (ordinary brazed plate approx. 50
W/cm²) Thermal resistance as low as 0.01–0.03 ℃/W Excellent Temperature Uniformity Full-surface temperature difference: ±0.5–±1℃ Completely eliminates local hotspots Fast Response Speed Low thermal inertia, precise temperature control, suitable for
transient high-power and pulse heating scenarios Relatively High Pressure Drop Requires matching high-pressure pump / high-flow cooling system High Manufacturing Precision Requirements Nozzle hole diameter, depth, and position tolerance: ±0.02–±0.05 mm
IV. Main Manufacturing Processes Precision Drilling + Vacuum Brazing Suitable for circular hole arrays with stable mass production Common materials: aluminum alloy / copper alloy, brazed sealing Photolithography / Etching + Diffusion Bonding Suitable for special-shaped nozzles and micro-scale slot jets Finer flow channels and lower thermal resistance (for AI/GPU/laser
applications) 3D Printing (SLM) Integrated forming with complex topological channels + nozzles Lightweight design, suitable for customized aerospace components
V. Application Scenarios (Extreme Thermal Management) - AI / Supercomputing Chips: H100/H200, GPU clusters, TPUs (>500W
chips)
- SiC / GaN Power Modules: 800V electric drives, ultra-fast charging
stations
- High-Power Lasers: fiber / semiconductor / UV lasers (heat flux
> 300W/cm²)
- Radar / Phased Array: military T/R components, 5G/6G base stations
- Medical Imaging: MRI gradient amplifiers, CT detectors (temperature
control accuracy ±0.5℃)
- Aerospace: satellite payloads, missile guidance
(vibration-resistant, lightweight, high heat flux)
VI. Comparison with Conventional Liquid Cooling Plates| Performance | Conventional Flow Channel Liquid Cooling Plate | High-Frequency Jet Impingement Liquid Cooling Plate |
|---|
| Heat Flux Density | < 50 W/cm² | 200–1000 W/cm² | | Thermal Resistance | 0.1–0.5 ℃/W | 0.01–0.03 ℃/W | | Temperature Uniformity | Temperature difference 3–10℃ | Temperature difference < ±1℃ | | Pressure Drop | Low (0.5–2 bar) | High (2–8 bar) | | Application Scenarios | Conventional power devices | Ultra-high heat flux, hotspot-sensitive, high-precision temperature
control |
VII. Summary High-Frequency Jet Impingement Liquid Cooling Plate represents the
state-of-the-art liquid cooling technology in modern industry,
designed specifically for extreme heat flux, ultimate temperature
uniformity, and high-precision temperature control. |
