Appointment with PhD supervisor

I am a recent PhD student. My adviser is really a very nice kind and open-minded guy. He is always open to discuss about subjects of my interest. As I am almost at the half of my first year, my rhythm of working has evolved from making lectures to doing something concrete. So, I have started to contact him more often since one month. How often a PhD student can see his supervisor ? Is it really disturbing to send him some results to take his opinion every week ? For the moment, he does not seem to be disturbed but is there some "implicit" norms that escape me ?

Thanks in advance.