a great modification for the yong heng !!

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josepartida

josepartida

Member
Apr 27, 2019
41
8
Jalisco, Mexico
Hello friends I want to share a modification that at least in this forum I have not seen what they do and that it is really worth a try I received my first YH last week at the beginning I was somewhat afraid since it is my first compressor thank you very much to the forum partners for helping me with some tips on how to start on this !! Well, let's get to the point as soon as I started using it. I noticed the high temperature reached by the tubes that go from one stage to another. This is a problem because the hot air is saturated with moisture in the vapor phase. This makes the separator installed at the factory is very inefficient, just like the small cotton filter, so I set to work. I went to find 1.5 meters of 5/16 copper tube and wrapped it in a spiral to make a small condenser. and install it at the exit of the first stage towards the separator use the same nuts and small steel rings that the factory stainless steel tube has after the first test is impressed by how well the separator works now captures a large amount of water in a short time about 2 minutes the line of the first stage is now fresh and the second stage decreases the temperature i did run the compressor for about 10 minutes and the piece of cotton was barely showing signs of moisture when it was almost soaked before, it seems that you do not need an additional filter of large dimensions I will continue to look for some improvements for now I hope this helps someone of you
 
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Hola amigos, quiero compartir una modificación que al menos en este foro no he visto lo que hacen y que realmente vale la pena intentarlo. Recibí mi primer YH la semana pasada al principio. Tenía un poco de miedo, ya que es mi primer compresor, gracias. Muchas gracias a los socios del foro por ayudarme con algunos consejos sobre cómo comenzar con esto. Bueno, vamos al grano tan pronto como empecé a usarlo. Noté la alta temperatura alcanzada por los tubos que van de una etapa a otra. Esto es un problema porque el aire caliente está saturado de humedad en la fase de vapor. Esto hace que el separador instalado en la fábrica sea muy ineficiente, al igual que el pequeño filtro de algodón, así que me puse a trabajar. Fui a buscar 1,5 metros de tubo de cobre 5/16 y lo envolví en espiral para hacer un pequeño condensador.
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and install it at the exit of the first stage towards the separator use the same nuts and small steel rings that the factory stainless steel tube has after the first test is impressed by how well the separator works now captures a large amount of water in a short time about 2 minutes the line of the first stage is now fresh and the second stage decreases the temperature i did run the compressor for about 10 minutes and the piece of cotton was barely showing signs of moisture when it was almost soaked before, it seems that you do not need an additional filter of large dimensions I will continue to look for some improvements for now I hope this helps someone of you
 
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Do you chill the coil with anything like a wet rag or something? What happens to the liquid that collects in the tube? It would need to run uphill to make its way out of the coil. I think it would work better if the coil was vertical with the inlet at the top and the outlet positioned above the separator.
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In my case I cooled it with air and it was very good the water that accumulates should go through the tube due to the air flow although I agree with you that there is a more privileged position and take it into account if you install it in this way it is because it was the only way in which the compressor would continue to be practical for transport in my case maybe in the future I will make an improvement on that
 
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The copper should be able to stand the pressure. It's just that the metal is more prone to fatigue than the original stainless tube. Can fail at the compression fitting due to cyclic stress caused by vibration. Additional support for the big coil may be necessary.
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If the coil has support, keep in mind that it was evident that it would vibrate due to the weight of the coil when you turn on the compressor it has no movement, I will leave it to see what happens over time, after all, it is only an experiment that for me there were good results
 
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With the coil horizontal it would certainly tend to catch water at the bottoms of the loops. Nothing good could come from that. If the coil was laid out vertically and fed from the top the moisture could be drained from the first stage cyclone. It might even blow the moisture out with the horizontal layout if you drained the first stage while the pump is running.
 
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The number one problem all these inexpensive compressors have is excessive heat. Cooling cost money. If you compare any of these inexpensive compressors to say a Bauer, or any professional class pump, it is those differences that cost the money. My Bauer has 4 stages and between each stage there is a coil of forced air cooled SS tubing and a drain-able moisture trap. You will note that these cheap pumps use water to cool because it is less expensive and more efficient that air cooling. I'm not knocking the OP's mod at all. It works. I like the idea of enhancing the water cooled theme with a welding torch cooler and a water cooled heat exchanger between stages as well.. However, there comes a point where the enhancing mods cost more than buying a pro unit up front........jus saying.
 
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