EP 0989366 A1 20000329 - A valve unit for automatically regulating the flow-rate of a fuel gas
Title (en)
A valve unit for automatically regulating the flow-rate of a fuel gas
Title (de)
Ventileinheit zur automatischen Regelung der Brenngasdurchflussmenge
Title (fr)
Une unité de soupape pour commander automatiquement le débit de gaz
Publication
Application
Priority
IT PD980164 A 19980701
Abstract (en)
The valve unit described is for automatically regulating the flow-rate of a fuel gas to a device for heating a fluid in dependence on variations in the flow-rate of the fluid through the heating device. The unit comprises means (36) for bringing about, in the fluid, a pressure differential correlated with the flow-rate of fluid flowing through a pipe (36a), actuator means (35a) which are supplied with the pressure differential in order to generate a signal correlated with the pressure-differential value, and means (4,10), controlled by the actuator means (35a), for regulating the flow-rate of fuel gas in order to vary the flow-rate of gas in a manner correlated with the fluid-pressure differential; the means for regulating the flow-rate of gas comprise a pressure regulator (4, 10) with a diaphragm (19), and the actuator means (35a) act on the regulating means by means of the control mediated by the pressure regulator (4, 10). <IMAGE>
IPC 1-7
IPC 8 full level
F23N 1/08 (2006.01)
CPC (source: EP)
F23N 1/087 (2013.01); F23N 2225/06 (2020.01); F23N 2235/16 (2020.01); F23N 2235/20 (2020.01); F23N 2235/24 (2020.01)
Citation (search report)
- [A] EP 0035147 A1 19810909 - VAILLANT JOH GMBH & CO [DE], et al
- [A] EP 0697563 A1 19960221 - INTEGRA SRL [IT]
- [A] PATENT ABSTRACTS OF JAPAN vol. 007, no. 104 (M - 212) 6 May 1983 (1983-05-06)
- [A] PATENT ABSTRACTS OF JAPAN vol. 004, no. 060 (M - 010) 6 May 1980 (1980-05-06)
- [A] PATENT ABSTRACTS OF JAPAN vol. 004, no. 060 (M - 010) 6 May 1980 (1980-05-06)
Designated contracting state (EPC)
DE ES FR GB IT NL
DOCDB simple family (publication)
DOCDB simple family (application)
EP 99202043 A 19990624; IT PD980164 A 19980701