EP 0041163 B1 19840801 - THERMALLY OPERATED SAFETY DEVICE FOR BOILERS IN CLOSED-CIRCUIT HEATING PLANTS
Title (en)
THERMALLY OPERATED SAFETY DEVICE FOR BOILERS IN CLOSED-CIRCUIT HEATING PLANTS
Publication
Application
Priority
DE 3020797 A 19800531
Abstract (en)
[origin: EP0041163A2] 1. Thermically controlled safety device for boilers (10) heated with solid fuels in closed heating installations, with which, in case of an over temperature in the heating installation, cold fresh water from the delivery conduit is taken into the system of the heating installation and hot heating water is let off into a drain (44), comprising a fresh water supply conduit (20) conducted to the system of the heating installation and connected to the delivery conduit, in which supply conduit a pressure reducer (22), a temperature controlled valve (34) and a tube separater (24) are arranged in series, and a drain conduit (42) connected to the system of the heating installation, in which a thermic drain safety device (38) is provided, the thermic drain safety device (38) being controlled by the same temperature sensor (36) as the temperature controlled valve (34), which temperature sensor (36) is exposed to the heating water temperature, and opening at a slightly higher temperature than this valve, characterized in that (a) the tube separator (24) has a passage port (30) of large diameter and a control port (32) of small diameter (b) the passage port (30) is connected directly to the outlet (66) of the pressure reducer (22), and (c) the control port (32) likewise connected to the outlet (66) of the pressure reducer is governed by the temperature controlled valve (34) formed as disc valve, which is controlled by a valve stem (46) longitudinally movable by the actuating member (40) of the temperature sensor (36) and also controlling the valve disc (104) of the thermic drain safety device (38).
IPC 1-7
IPC 8 full level
F24D 19/10 (2006.01); F24H 9/20 (2006.01)
CPC (source: EP US)
F24D 19/1009 (2013.01 - US); F24H 9/2057 (2013.01 - EP)
Designated contracting state (EPC)
AT CH DE FR LI SE
DOCDB simple family (publication)
EP 0041163 A2 19811209; EP 0041163 A3 19820120; EP 0041163 B1 19840801; AT E8814 T1 19840815; DE 3020797 A1 19811217; DE 3165205 D1 19840906; DK 228881 A 19811201; NO 151384 B 19841217; NO 151384 C 19850327; NO 811815 L 19811201
DOCDB simple family (application)
EP 81103711 A 19810514; AT 81103711 T 19810514; DE 3020797 A 19800531; DE 3165205 T 19810514; DK 228881 A 19810526; NO 811815 A 19810529