EP 2541156 A1 20130102 - GAS BOILER HAVING A HYBRID OPEN-AND-CLOSED-TYPE EXPANSION TANK
Title (en)
GAS BOILER HAVING A HYBRID OPEN-AND-CLOSED-TYPE EXPANSION TANK
Title (de)
GASHEIZKESSEL MIT HYBRIDEM ÖFFNUNGS- UND VERSCHLUSSEXPANSIONSTANK
Title (fr)
CHAUDIÈRE À GAZ COMPRENANT UN VASE D'EXPANSION HYDRIDE DU TYPE OUVERT ET FERMÉ
Publication
Application
Priority
- KR 20100016923 A 20100225
- KR 2010007971 W 20101111
Abstract (en)
The present invention relates to a gas boiler having a hybrid open-and-closed-type expansion tank that is controlled to adopt an open configuration when water must be added into the boiler so as to enable water to be easily added regardless of the water pressure of a tap, and adopt a closed configuration when the boiler operates after water is added so as to maintain the pressure within the expansion tank at a suitable level during switching, to thereby enable heating water to flow smoothly and the boiler to operate smoothly. For this purpose, a gas boiler of the present invention, having an expansion tank for storing circulated heating water therein and absorbing pressure changes in the heating water, comprises: a water level sensor for sensing whether or not the water level of heating water in the expansion tank lies within a set water level range; an air vent provided at one side of the expansion tank, for opening and closing an air outlet that is in communication with the atmosphere in accordance with changes in the water level in the expansion tank; and an overpressure safety valve provided at an upper portion of the expansion tank, for maintaining the pressure inside the expansion tank below a certain pressure.
IPC 8 full level
F24D 3/10 (2006.01); F24D 19/10 (2006.01); F24H 9/18 (2006.01)
CPC (source: EP US)
F24D 3/08 (2013.01 - EP); F24D 3/1008 (2013.01 - EP); F24D 3/1041 (2013.01 - EP); F24D 19/1066 (2013.01 - EP US)
Citation (search report)
See references of WO 2011105677A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2541156 A1 20130102; CN 102822605 A 20121212; CN 102822605 B 20141231; KR 101155707 B1 20120614; KR 20110097206 A 20110831; WO 2011105677 A1 20110901
DOCDB simple family (application)
EP 10846704 A 20101111; CN 201080065933 A 20101111; KR 20100016923 A 20100225; KR 2010007971 W 20101111