Systems and methods of fluid operated concealed sprinklers within closed cavities

A sprinkler system, comprising:

• a building structure that defines a cavity;
• and
• a sprinkler, comprising:
• a body that defines an inlet coupled with one or more pipes and an outlet coupled with the inlet, the outlet around an axis;
• a seal that seals the outlet to prevent fluid from the one or more pipes from flowing through the outlet;
• an activation element coupled with the seal, the activation element changes from a first state to a second state to allow the fluid to flow through the outlet;
• a housing comprising a first housing end coupled with the body and a second housing end that is outward from the axis, the housing positioned in the cavity, the housing defines a chamber around the activation element, the activation element is between the first housing end and the second housing end;
• a cover plate coupled with the housing;
• and
• a wall that extends from the cover plate, towards the activation element, to an inner edge that spaced from the second housing end, to form an air flow channel into the chamber to the activation element along the wall, the air flow channel comprising a channel inlet defining a gap between the cover plate and the second housing end, at least one of the cover plate and the wall are removably coupled with the body.