Special explanation of cooling fan waterproof scheme

The waterproof function has always been a technical problem faced by many manufacturers of brushless DC cooling fans, because the products will be used in relatively harsh environments (water, salt spray, oil pollution, corrosive gas) in the later stage.It is necessary for the fan to work stably to ensure long-term effective heat dissipation. Otherwise, it will not only damage the cooling fan, but also the entire circuit system and even the entire set of equipment to be dissipated.

1. Use insulating paint or special glue to fully seal the entire motor part, etc.

2. The whole motor is soaked by insulating liquid coating and then dried and sealed. The fan motor and control circuit are fully sealed with A and B resins. The effects and characteristics of the insulation scheme of vacuum pressure coating after insulating liquid coating and soaking are different. .

3. Parylene is nano-waterproof, dense and free of pinholes, and the protective effect is completely solved. The equipment input cost is relatively high, and the technological process is slightly complicated. The main method is processing by outsourcing professional manufacturers.

process:

Parylene vacuum film is a special method of vacuumization and e-CVD (Chemical Vapor Deposition). Zhang We use the reactive small molecules to crystallize Y on the surface of the substrate to form a special stubby wood tincture file, sharp tanning N-shaped hairpin on the surface of the cherry tree, and 1 μm of the surface. 50 μm, uniform film thickness ①|po hole, transparent oΑ⒏and drapeability, solvent resistance ⒖Guyun|, anti-n, it is the best partner for the generation of LED light aI IP, anti-m, waterproof and moisture-proof.

Processing characteristics:

1. Good coating properties, suitable for Tb filling methods such as Epoxy, Urethane, Silicone, etc.

2. High quality.

3. Good chemical properties, UV resistance, acid resistance.

4. The fontanelle skirt of the cub m200 ℃ to -200 ℃

5. o Hole membrane seal ⒛ ず slug rejuvenation

6. Material o color with high transparency.

Difference:

Parylene vacuum film has e in general T, filling Z, the vacuum film is not hindered by the method of refining e film, and the a product that needs film, all its surfaces are replaced with plutonium and covered with a dense film, and the _ to the fine is uniform. Jie⒏咂burn|'s membrane surface is repaired with Sakura Yizui poisonous S, a product has high recycling and usability, and p reduces labor costs.