EP 0150087 B1 19880316 - A THERMAL LIMITING DEVICE
Title (en)
A THERMAL LIMITING DEVICE
Publication
Application
Priority
GB 8401621 A 19840121
Abstract (en)
[origin: EP0150087A1] A thermal limiting device (10) is provided in heating apparatus including four infra-red-emitting, tungsten-halogen lamps (5 to 8) supported above a layer (2) of themally-insulative material. The device (10) consists of a metallic wire (11) arranged to de-energise the lamps (5 to 8) when it is subjected to a predetermined temperature. The wire (11) is disposed within a quartz tube (12), which selectively transmits and absorbs infra-red radiation of different wavelengths. A thermally-conductive tube (14), having an infra-red-reflective outer surface, is located between the wire (11) and quartz tube (12). The tube (14) prevents infra-red radiation transmitted through the quartz tube (12) from reaching the wire (11), whilst infra-red radiation absorbed by the tube (12) heats the wire (11) by thermal conduction and convection.
IPC 1-7
IPC 8 full level
F24C 7/08 (2006.01); H05B 1/02 (2006.01); H05B 3/68 (2006.01); H05B 3/74 (2006.01)
CPC (source: EP)
H05B 3/744 (2013.01); H05B 3/746 (2013.01); H05B 2213/04 (2013.01)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0150087 A1 19850731; EP 0150087 B1 19880316; AT E33085 T1 19880415; DE 3561912 D1 19880421; GB 8401621 D0 19840222
DOCDB simple family (application)
EP 85300161 A 19850110; AT 85300161 T 19850110; DE 3561912 T 19850110; GB 8401621 A 19840121