(19)
(11) EP 2 664 858 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
07.09.2016 Bulletin 2016/36

(43) Date of publication A2:
20.11.2013 Bulletin 2013/47

(21) Application number: 13167832.8

(22) Date of filing: 15.05.2013
(51) International Patent Classification (IPC): 
F24D 3/08(2006.01)
F24H 9/14(2006.01)
 F24D 17/00(2006.01)
(84) Designated Contracting States:
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
Designated Extension States:
BA ME

(30) Priority: 19.05.2012 CN 201210171125

(71) Applicant: Vaillant GmbH
42859 Remscheid (DE)

(72) Inventors:
  • Kupka, Thomas
    51467 Bergisch Gladbach (DE)
  • Zhu, Zhongqin
    No.69 Wuxi (CN)

(74) Representative: Hocker, Thomas 
Vaillant GmbH Berghauser Strasse 40
42859 Remscheid
42859 Remscheid (DE)

   


(54) Gas water heater attachable with an adapter to realize central heating function


(57) The present invention discloses an adapter capable of being attached to a gas water heater to achieve a central heating function. The adapter comprises a heat exchanger having a first fluid passageway capable of being intercommunicated to the gas water heater, and a second fluid passageway interchanging heat but physically isolated with said first fluid passageway; a first diverter valve connected to the first fluid passageway and being operable to selectively connect the first fluid passageway to the gas water heater thereby allowing fluid fed from the gas water heater to pass through the first fluid passageway. By employing the adapter as described above, the existing gas water heater can be upgraded to a gas boiler by simple modifications. As a result, the total invest is reduced for users, and cost of development and manufacturing is decreased for manufactures.







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