Title:
DENITRIFYING DEVICE FOR WATER HEATER, AND WATER HEATER
Document Type and Number:
Japanese Patent JP2008121981
Kind Code:
A
Abstract:
To provide a water heater draining water as safer water or safely recycling it as bathtub water by eliminating nitrate nitrogen contained in drain water in the water heater of high heat efficiency utilizing the sensible heat and latent heat of combustion gas.
Drain water condensed in a secondary heat exchanger 17 is led to an ion exchange resin part 20 where nitrate nitrogen is eliminated. The drain water is further led to a neutralization tank 22 and neutralized. The thus-treated drain water is discharged to a reheating circuit connected to a bath adapter 56 of a bathtub 55 and discharged into the bathtub 55 from the reheating circuit.
Inventors:
IGUCHI MASAHIRO
UENO NAOTO
NAKATSUKA YUJI
UENO NAOTO
NAKATSUKA YUJI
Application Number:
JP2006306310A
Publication Date:
May 29, 2008
Filing Date:
November 13, 2006
Export Citation:
Assignee:
NORITZ CORP
International Classes:
F24H9/16; B01J49/00; C02F1/42; F24H1/14; F24H9/00
Attorney, Agent or Firm:
Masafusa Nakano