Thank you Alaskagirl, indeed it is Lava Burst (just found out last night). I got it here in Vancouver,BC in a little flower shop, but they didn't know anything about this orchid, their producer doesn't give them any tag with the plants... I was lucky it is not something more difficult to identify
I love the small reddish flowers and the psb are cute (I love compact plants).
I read online that this orchid blooms 2 to 3 times a year
! It seem to like S/H, so I'll give it a try.
I hope your will bloom soon !