In Japanese, it seems to be called a Machuugrill. It is fired by charcoal and the grill arrows are just air. It seems to be some convection heating with the temperature moderated by water. Translation dictionaries don't include it all. What is closest term for this grill?
The grill in question seems to be the Loyly Smokeless BBQ (「ロウリュ」無煙バーベキューグリル "Rouryu" muen bābekyū guriru), a proprietary device by a Japanese company of the same name and intended primarily for camping use or for charcoal grilling in small outdoor spaces.
These are not particularly common even in Japan, in fact I'd never heard of this concept before. "Smokeless grills" are a common product category, but the term usually refers to electric or battery-operated grills, not this unusual charcoal-and-steam combo.
