US 12,239,867 B2
Sprinkler head
Masaharu Chiba, Tokyo (JP); Yutaka Tateishi, Tokyo (JP); and Kazuma Ito, Tokyo (JP)
Assigned to SENJU SPRINKLER CO., LTD., Tokyo (JP)
Appl. No. 17/781,626
Filed by SENJU SPRINKLER CO., LTD., Tokyo (JP)
PCT Filed Dec. 23, 2020, PCT No. PCT/JP2020/048259
§ 371(c)(1), (2) Date Jun. 1, 2022,
PCT Pub. No. WO2021/132382, PCT Pub. Date Jul. 1, 2021.
Claims priority of application No. 2019-232182 (JP), filed on Dec. 24, 2019.
Prior Publication US 2023/0038975 A1, Feb. 9, 2023
Int. Cl. A62C 37/09 (2006.01); A62C 37/12 (2006.01)
CPC A62C 37/09 (2013.01) [A62C 37/12 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A sprinkler head comprising:
a body having a slit that is open to an outer peripheral surface of the body;
a heat collector held by the body in such a manner as to project from a lower end of the body; and
an escutcheon including a cylindrical portion that engages with the body and a plate portion that has an outer peripheral edge extending outward from a lower end of the cylindrical portion, the outer peripheral edge being capable of being brought into contact with a ceiling surface,
wherein the heat collector is exposed with respect to the ceiling surface in an installed state such that the heat collector is uncovered,
wherein the cylindrical portion has a missing portion that lacks a surrounding wall of the cylindrical portion,
wherein the body is capable of being held, with respect to the cylindrical portion, at anywhere between a first holding position and at a second holding position in accordance with an insertion depth of the body with respect to the cylindrical portion,
wherein the sprinkler head forms, at the first holding position, a first airflow path in which a communication portion that is open to the lower end of the body serves as a first introduction port for outside air and in which the missing portion of the cylindrical portion serves as, by overlapping the slit of the body, a first exit through which the outside air that has flowed in the body is discharged to an area above a ceiling, and
wherein the sprinkler head forms, at the second holding position, a second airflow path in which a gap that is formed between the escutcheon and the heat collector serves as a second introduction port for the outside air and in which the missing portion of the cylindrical portion serves as a second exit through which the outside air is discharged to the area above the ceiling, the heat collector has a plurality of openings on a periphery of a side surface of the heat collector, the plurality of openings partially overlapped with the missing portion in a horizontal plane.