EP 1146288 A1 20011017 - Proportional control gas valve
Title (en)
Proportional control gas valve
Title (de)
Proportionales Gasregelventil
Title (fr)
Soupape de commande proportionelle à gaz
Publication
Application
Priority
EP 00108147 A 20000413
Abstract (en)
A proportional control gas valve includes a valve body formed with an inlet having a first orifice, a first chamber communication with the inlet through the orifice, a second chamber formed with a balancing orifice and a second orifice, a third chamber in communication with the first chamber through the balancing orifice, a fourth chamber in communication with the first chamber via the second orifice, a fifth chamber in communication with the fourth chamber, and an outlet in communication with the fifth chamber, a solenoid assembly mounted in the first chamber for controlling gas flowing from the first chamber to the fourth chamber via the second orifice, a main diaphragm arranged between the inlet and the third chamber, a valve spring mounted under the main diaphragm and urging the main diaphragm to move upwardly to close a passage from the inlet to the third chamber, a regulation diaphragm mounted inside the fifth chamber, a regulation spring mounted on the regulation diaphragm, an adjust stem connected with the regulation diaphragm for controlling gas flow rate from the fourth chamber to the outlet, and a servomotor drivingly connected with the adjust stem, whereby the proportional control gas valve only requires a small amount of energy to control the gas pressure and flow rate simultaneously. <IMAGE>
IPC 1-7
IPC 8 full level
F23N 1/00 (2006.01)
CPC (source: EP)
F23N 1/007 (2013.01); F23N 2225/04 (2020.01); F23N 2235/14 (2020.01); F23N 2235/16 (2020.01); F23N 2235/20 (2020.01)
Citation (search report)
- [Y] US 5413141 A 19950509 - DIETIKER PAUL [US]
- [Y] DE 3841816 A1 19900719 - VAILLANT JOH GMBH & CO [DE]
- [A] EP 0113876 A2 19840725 - HONEYWELL INC [US]
- [A] EP 0614050 A1 19940907 - VAILLANT JOH GMBH & CO [DE]
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 00108147 A 20000413