HOT WATER SUPPLY DEVICE AND FLOW VOLUMEN CONTROL METHOD

Title:

HOT WATER SUPPLY DEVICE AND FLOW VOLUMEN CONTROL METHOD

Document Type and Number:

WIPO Patent Application WO/2012/137281

Kind Code:

A1

Abstract:

Provided is a hot water supply device with which the adhesion of scale can be suppressed at the inner wall of a to-be-heated liquid flow path within a heat exchanger with which the hot water supply device is formed, and a decrease in the heat exchange capability and obstruction of the flow path due to the adhesion of scale can be suppressed. A pulsing motion is applied to a to-be-heated liquid circulating in a tank (1) and a heat exchanger (3), thus peeling away scale which has precipitated on the inner wall (heat transfer surface) of a to-be-heated liquid flow path (31) in the heat exchanger (3), and the frequency of circulation of to-be-heated liquid circulating between the tank and the heat exchanger is controlled to three or less. A circulation control unit (101) causes the to-be-heated liquid passing through the to-be-heated liquid flow path (31) of the heat exchanger (3) to move with a pulsing motion, and controls the flow volume of the to-be-heated liquid passing through the to-be-heated liquid flow path (31) such that the frequency of circulation, which is determined on the basis of the total volume of the to-be-heated liquid stored in the tank (1), the time required for the total volume of the to-be-heated liquid in the tank (1) to reach a prescribed temperature, and the flow volume of the to-be-heated liquid passing through the to-be-heated liquid flow path (31), and which indicates the frequency with which the total volume of the to-be-heated liquid stored in the tank (1) passes through the heat exchanger (3), is three or less.

Inventors:

FURUKAWA SEIJI (JP)
MIYA KAZUHIRO (JP)
KAMIYA TOSHIYUKI (JP)
SAITO TADASHI (JP)

Application Number:

PCT/JP2011/058459

Publication Date:

October 11, 2012

Filing Date:

April 01, 2011

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP (JP)
FURUKAWA SEIJI (JP)
MIYA KAZUHIRO (JP)
KAMIYA TOSHIYUKI (JP)
SAITO TADASHI (JP)

International Classes:

F28G7/00

Foreign References:

JP2009243797A	2009-10-22
JP2010091123A	2010-04-22
JP2005221109A	2005-08-18
JP2010175160A	2010-08-12
JP2005221109A	2005-08-18

Other References: