Multi-step-shaped cooling-fin-type closed cooling device
A technology of heat sink and heat sink, applied in the direction of cooling/ventilation/heating transformation, etc., can solve problems such as temperature imbalance and achieve the effect of temperature balance
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[0031] Specific example 1
[0032] 1) T / R component length dimension L 1 =80mm, width dimension L 2 =37mm, quantity N=34, so the air duct size A=37mm, B=80mm, δ=4mm, flange thickness size d 0 =6mm, L=(L 2 +δ)·N / 2+2·d 0 =709mm.
[0033] 2) T / R component heating power Φ=14W, N=34, C P =0.24kcal / kg·℃, ρ=1.077kg / m 3 , Δt=20℃, substituting into the formula Q=Φ·N / (C P ·Ρ·Δt)=1.3m 3 / min, so the air volume of the fan is ≥Q, the size is 120X120X38mm, and the maximum air volume is 5.7m 3 / min axial flow fan. LF21 anti-rust aluminum is selected for the heat dissipation duct. Through computer simulation, optimization and testing, it is determined that the heat dissipation duct size C=50mm and D=65mm, the thickness of the heat sink d=1mm, and the distance between the heat sink y=2.5mm; Shows that the number of heat sinks in the heat dissipation duct is M=18, the number of steps is K=5, and the step size is a 1 ~a 5 , B 1 ~b 5 , A 1 =210mm, a 2 =135mm, a 3 =100mm, a 4 =110mm, a 5 = 70mm, b 1 =2...
Example Embodiment
[0037] Specific example 2
[0038] 1) T / R component length dimension L 1 =60mm, width dimension L 2 =25mm, quantity N=20, so the air duct size A=25mm, B=60mm, δ=4mm, flange thickness size d 0 =6mm, L=(L 2 +δ)·N / 2+2·d 0 =302mm.
[0039] 2) T / R component heating power Φ=10W, N=20, C P =0.24kcal / kg·℃, ρ=1.077kg / m 3 , Δ=20℃, substituted into the formula Q=Φ·N / (C P ·Ρ·Δt)=0.55m 3 / min, so the air volume of the fan is ≥Q, the size is 60X60X32mm, and the maximum air volume is 1.2m 3 / min axial flow fan. Copper alloy H62 is selected as the heat dissipation air duct. Through computer simulation, optimization and experiment, it is determined that the heat dissipation air duct size C=45mm and D=45mm, the thickness of the heat sink d=1.2mm, and the distance between the heat sink y=3mm; The number of fins in the heat dissipation duct is 10, the number of steps is 4, and the step size a 1 ~a 4 , B 1 ~b 4 , A 1 =50mm, a 2 =100mm, a 3 =90mm, a 4 =50mm, b 1 =5mm, b 2 =12mm, b 3 =18mm, b 4 =20mm.
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