Title:
HOT WATER STORAGE WATER HEATER
Document Type and Number:
Japanese Patent JP2017116123
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a hot water storage water heater capable of recovering heat of hot water in a bathtub and utilizing it for hot water supply, with a simple structure.SOLUTION: A hot water storage water heater includes: a hot water storage tank; a circulation circuit for connecting an upper part and a lower part of the hot water storage tank, and including a circulation pump and a heat exchanger; and a bathtub circuit for connecting between a bathtub and the heat exchanger, and including a bathtub pump and bathtub temperature detection means. It also includes: a plurality of tank temperature detection means added to different height positions of the hot water storage tank; and average temperature calculation means for calculating an average temperature of hot water in the hot water storage tank from detection temperature of these tank temperature detection means. In the case where a bathtub temperature detected by the bathtub temperature detection means by driving the bathtub pump by an instruction of a heat recovery operation of the bathtub is higher than a hot water average temperature calculated by the average temperature calculation means by a predetermined temperature or greater, the heat recovery operation of the bathtub is performed by driving the circulation pump and the bathtub pump.SELECTED DRAWING: Figure 1
Inventors:
YAMANE SHOTA
Application Number:
JP2015248835A
Publication Date:
June 29, 2017
Filing Date:
December 21, 2015
Export Citation:
Assignee:
NORITZ CORP
International Classes:
F24H1/00; F24H1/18
Attorney, Agent or Firm:
Toshio Okamura