SU23850A1 - Fire detector - Google Patents

Description

The present invention relates to a fire detector device using a low-melting body, when it is melted, the circuit of the signal circuit is first closed and then opened.

In the schematic drawing of FIG. 1 shows a top view of the fire detector with the top plate removed; FIG. 2 and 3 - end view of it before and after signaling; FIG. 4 is a side view.

In a special way curved springs / and 2 (Fig. 1, 2 and 3),. B.1 The contacts of the signal circuit are normally connected with a metal Moscow 3 bridge (Fig. 2) fixed in lever 4. The latter is straining from its working (horizontal) position under the action of the spring 5 which is depressing it (Fig. 2, 3 and 4) slides down, which is prevented by bar 6, made of a low-melting material (for example; p, wax). The latter rests on the other end of the bar on the sharpened bar 7 so that, when voznyky Hem a fire, the bar is loosened under the influence of the spring

5 cut off with the indicated pD and released lever 4. In this case, the contact springs / and 2 of the signal circuit must first be opened, and then when moving rshag 4 downward, the subsequent short circuit by bridge 5. The lever 4 is provided with an optical pointer 5 (Fig. 4). For the supply of wires From the source t; eye clamps provided //.

The subject matter of the invention.

- A fire detector using a low-melting body, which is melted to close or open the signal circuit, characterized in that the low-melting body is designed as a bar 6 and serves at one end as a stop for the spring pressed lever 4, rests with its other end on taper bar 7 so that when the bar is softened

6on cut the bar 7 and release the lever 4,