Views: 0 Author: Site Editor Publish Time: 2026-06-03 Origin: Site
IQF Evaporator Fin Spacing for Frozen Meat (Beef/Pork/Mutton/Poultry/Diced Meat)
Freezing temp: -32℃ ~ -40℃, meat releases heavy moisture & fat vapor → wider fin pitch to avoid frost blockage and fat adhesion, standard below：
1. Standard Fixed Fin Pitch (Most common meat IQF tunnel/spiral)
Meat Category | Recommended Fin Spacing | Application Description |
|---|---|---|
Diced meat, minced pork/beef, chicken dices | 8–10 mm | Fluidized bed IQF, small granular meat, moderate moisture, balance heat exchange & anti-frost |
Whole chicken, chicken parts, pork ribs, lamb chops | 10–12 mm | Spiral freezer / impingement tunnel, high water evaporation, frequent defrost risk |
Big beef chunk, whole mutton carcass, high-fat meat | 12–14 mm | Heavy moisture + grease volatilization, prevent fin fouling by fat residue |
2. Variable Gradient Fin Pitch (Premium meat production line, mainstream European design)
Air inlet side: 18~20 mm → Air outlet side:10~12 mm
Inlet: large spacing to catch heavy initial frost & meat moisture; outlet smaller for stable heat transfer
Extend continuous running time between defrost by 30%+, reduce maintenance frequency
3. Custom Special Pitch Options
Ultra high-fat meat (bacon, fatty pork): 14–16 mm full wide pitch, 304/316 stainless steel fin to resist fat corrosion & easy high-pressure washdown
Pre-chilling + two-stage IQF line: pre-cool section 8mm, deep-freeze section 10–12mm
4. Material & Maintenance Correlation
Fin material: High-fat meat processing prefer 304/316 stainless steel fin + stainless tube, vs ordinary aluminum fin easy grease corrosion
Maintenance cost impact:
8–12mm standard pitch: regular annual cleaning cost lower, no frequent fin repair
≥14mm extra-wide pitch: cleaning convenience up, annual maintenance cost ↓10%~18%, heat exchange slightly reduced
5. Compare with Seafood & Cheese for reference
Seafood (shrimp/squid):8–12mm
Cheese:8–10mm
Frozen meat overall wider pitch than dairy, similar or wider than seafood due to fat vapor pollution
