HEAT PUMP WATER HEATER - MATSUSHITA ELECTRIC IND CO LTD

Title:

HEAT PUMP WATER HEATER

Document Type and Number:

WIPO Patent Application WO/2003/069236

Kind Code:

A1

Abstract:

A heat pump water heater of instantaneous water heating type, comprising at least either of 1) a load setting part for setting a heating amount by a heat exchanger and a heating control part for controlling the heating amount according to the set value, 2) a heating part for heating water in front and rear routes including the water flow passage of the heat exchanger, 3) a plurality of compressors, and 4) a plurality of heat pump cycles, wherein city water is passed directly in the water flow passage of the heat exchanger exchanging heat between a refrigerant flow passage and the water flow passage and hot water delivered from the water flow passage is put in use, whereby the rise of water temperature at the start of hot water supply can be increased and also a controllability and an efficiency can be improved.

Inventors:

KUNIMOTO KEIJIRO (JP)
WATANABE TAKESHI (JP)
KONDO RYUTA (JP)
MATSUMOTO SATOSHI (JP)
IMABAYASHI SATOSHI (JP)

Application Number:

PCT/JP2003/001366

Publication Date:

August 21, 2003

Filing Date:

February 10, 2003

Export Citation:

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Assignee:

MATSUSHITA ELECTRIC IND CO LTD (JP)
KUNIMOTO KEIJIRO (JP)
WATANABE TAKESHI (JP)
KONDO RYUTA (JP)
MATSUMOTO SATOSHI (JP)
IMABAYASHI SATOSHI (JP)

International Classes:

F24D17/02; F24D19/10; F25B30/02; F25B9/00; (IPC1-7): F24H1/00; F25B30/02

Foreign References:

JPH10311597A	1998-11-24
JPS61246541A	1986-11-01
JPS6053733A	1985-03-27
JPH10253155A	1998-09-25
JPH10318604A	1998-12-04
JP2002005515A	2002-01-09
EP1167896A2	2002-01-02
JP2001041573A	2001-02-16

Other References: