A thermal triggering element having a vessel body with an outer wall formed from a rupturing material, and having a cavity enclosed by the outer wall and situated in the interior of the vessel body, and in which a triggering liquid is enclosed. The vessel body is formed so as to extend along an axial direction, with a tubular central section extending in the axial direction, and with two end sections located at the respective axial ends and in which the cavity is closed off in the manner of a cap. In order for the thermal triggering element to be protected against damage by shocks, the triggering element has a permanently acting reinforcement which reinforces the rupturing material with respect to shock loads acting transversely with respect to the longitudinal direction.

To provide a protector for a heat-sensitive element of a sprinkler head, the protector being configured to be removably attached to a sprinkler head to protect a heat-sensitive element of the sprinkler head and being configured to be easily removed after completion of installation of the sprinkler head. A protector is to be attached to a sprinkler head including: a main body including a nozzle; frame arms extending from the main body in a water discharge direction of the nozzle; and a heat-sensitive element disposed between the frame arms. The protector includes: an opening through which the heat-sensitive element is insertable into the protector; a base opposite to the opening; lateral faces extending from the base toward the opening and lying adjacent to the frame arms; a flat face provided on an inner side of the base and of the lateral faces; and projections provided on the lateral faces.

To provide a protector for a heat-sensitive element of a sprinkler head, the protector being configured to be removably attached to a sprinkler head to protect a heat-sensitive element of the sprinkler head and being configured to be easily removed after completion of installation of the sprinkler head. A protector is to be attached to a sprinkler head including: a main body including a nozzle; frame arms extending from the main body in a water discharge direction of the nozzle; and a heat-sensitive element disposed between the frame arms. The protector includes: an opening through which the heat-sensitive element is insertable into the protector; a base opposite to the opening; lateral faces extending from the base toward the opening and lying adjacent to the frame arms; a flat face provided on an inner side of the base and of the lateral faces; and projections provided on the lateral faces.

A dry sprinkler assembly for fire suppression uses a tube within a pipe element to maintain a spring loaded valve in a closed position at the end of the pipe element connected to a piping network. The tube is held against the biasing force of the valve's spring by a plug acted on by the temperature sensitive trigger of the sprinkler mounted on the opposite end of the pipe element.

A fire suppression sprinkler adapted to receive arcuate surfaces of a grooved coupling is retainable to the coupling in a pre-assembled state. The coupling joins the sprinkler in facing axial end to end relation directly to grooved pipe. The sprinkler has a monolithic body which defines a bore having an inlet and an outlet. A groove, positioned between the inlet and the outlet extends around the body. A projection, positioned between the groove and the outlet also extends around the body.

A fire suppression sprinkler adapted to receive arcuate surfaces of a grooved coupling is retainable to the coupling in a pre-assembled state. The coupling joins the sprinkler in facing axial end to end relation directly to grooved pipe. The sprinkler has a monolithic body which defines a bore having an inlet and an outlet. A groove, positioned between the inlet and the outlet extends around the body. A projection, positioned between the groove and the outlet also extends around the body.

A battery module including a cell stack formed by stacking a plurality of battery cells; a module frame coupled to one side or both sides of the cell stack; and a fire extinguishing unit accommodated in the module frame to eject a fire extinguishing agent at a reference temperature or above.

A battery module including a cell stack formed by stacking a plurality of battery cells; a module frame coupled to one side or both sides of the cell stack; and a fire extinguishing unit accommodated in the module frame to eject a fire extinguishing agent at a reference temperature or above.

The present disclosure discloses a closed water mist nozzle with active opening, comprising a nozzle body (1) and a sensitive part provided on the nozzle body (1), and a starting element for changing the state of the sensitive part is further arranged on the nozzle body (1); the starting element can be used for heating or impacting the sensitive part to make the sensitive part crack or fall off; the sensitive part is a fusible alloy column or a temperature-sensing glass bulb; the material of fusible alloy column is bismuth-tin alloy; the closed water mist nozzle with active opening of the present disclosure can be actively controlled by controlling the breakage of the temperature-sensing glass ball, which is of a wider application prospect.

The present disclosure discloses a closed water mist nozzle with active opening, comprising a nozzle body (1) and a sensitive part provided on the nozzle body (1), and a starting element for changing the state of the sensitive part is further arranged on the nozzle body (1); the starting element can be used for heating or impacting the sensitive part to make the sensitive part crack or fall off; the sensitive part is a fusible alloy column or a temperature-sensing glass bulb; the material of fusible alloy column is bismuth-tin alloy; the closed water mist nozzle with active opening of the present disclosure can be actively controlled by controlling the breakage of the temperature-sensing glass ball, which is of a wider application prospect.