(19)
(11) EP 2 325 569 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
06.08.2014 Bulletin 2014/32

(43) Date of publication A2:
25.05.2011 Bulletin 2011/21

(21) Application number: 10187447.7

(22) Date of filing: 13.10.2010
(51) International Patent Classification (IPC): 
F24D 17/02(2006.01)
F28D 7/04(2006.01)
F28D 1/02(2006.01)
 F28D 1/047(2006.01)
F28D 7/08(2006.01)
F28D 20/00(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: 14.10.2009 JP 2009236955
15.10.2009 JP 2009238070

(71) Applicant: Panasonic Corporation
Kadoma-shi Osaka 571-8501 (JP)

(72) Inventors:
  • Yamamoto, Teruo
    OSAKA 571-8501 (JP)
  • Imagawa, Tsuneko
    OSAKA 571-8501 (JP)
  • Nishiyama, Yoshitsugu
    OSAKA 571-8501 (JP)
  • Ohama, Masahiro
    OSAKA 571-8501 (JP)
  • Kuramoto, Tetsuhide
    OSAKA 571-8501 (JP)
  • Watanabe, Shinji
    OSAKA 571-8501 (JP)
  • Nakatani, Kazuhito
    OSAKA 571-8501 (JP)

(74) Representative: Eisenführ Speiser 
Patentanwälte Rechtsanwälte PartGmbB Postfach 31 02 60
80102 München
80102 München (DE)

   


(54) Hot water supply apparatus


(57) A hot water supply apparatus comprising a hot water tank 1, a pipe disposed in the hot water tank 1, and a heat exchanger 9 for exchanging between heat of hot water in the hot water tank 1 and heat of water flowing through the pipe, wherein the pipe is disposed in the hot water tank 1 substantially in a form of a horizontal plane, and heating efficiency of the hot water tank 1 is enhanced.





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