Title:
HOT WATER HEATER
Document Type and Number:
Japanese Patent JP2017129290
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To solve the problem that further improvement of hot water storage efficiency is required since a heat insulation performance of a hot water tank 1 is improved or means for suppressing a radiation amount by covering piping with a heat insulation material is used for storing high-temperature hot water that is heated by heating means 4 in the hot water tank 1 while suppressing the radiation amount but the radiation amount cannot be sufficiently suppressed and the hot water storage efficiency is not improved because of a radiation loss.SOLUTION: In a hot water storage type hot water heater, a control device 20 comprises boiling operation control means 21 for performing a boiling operation by controlling a heating circulation pump 19 and the heating means 4 in such a manner that a temperature stratification is formed like a high-temperature layer in an upper part of the hot water tank 1 and a low-temperature layer in a lower part of the hot water tank 1. In the hot water storage type hot water heater, an inner diameter of a heating returning pipe 6 is made smaller than an inner diameter of a heating outgoing pipe 5.SELECTED DRAWING: Figure 2
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Inventors:
SHIGA HIROKI
YACHITA TAKAAKI
KIMURA KAZUTO
OKADA YOSHIHIDE
YACHITA TAKAAKI
KIMURA KAZUTO
OKADA YOSHIHIDE
Application Number:
JP2016007335A
Publication Date:
July 27, 2017
Filing Date:
January 18, 2016
Export Citation:
Assignee:
CORONA CORP
International Classes:
F24H1/18
Domestic Patent References:
| JP2008164191A | 2008-07-17 | |||
| JP2011117694A | 2011-06-16 | |||
| JP2007332833A | 2007-12-27 |
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