CO2 WATER HEATER - MAEKAWA SEISAKUSHO KK

Title:

CO2 WATER HEATER

Document Type and Number:

WIPO Patent Application WO/2015/129456

Kind Code:

A1

Abstract:

In the present invention, the following are provided: a CO2 circulation path (14); a compressor (16), gas cooler (18), and expansion valve (20) which are provided on the CO2 circulation path (14); a bypass path (30) that bypasses the expansion valve (20); and a super critical tank (32) and flow-rate adjusting valves (34, 35) which are provided on the bypass path (30). The CO2 circulation path (14) includes CO2 branching paths (14b, 14c) which branch in series into two systems, between the compressor (16) and a down-stream position of the expansion valve (20). Air heat source heat exchangers (22a, 22b) are provided on the CO2 branching path (14b), and a water heat source heat exchanger (24) is provided on the CO2 branching path (14c). Provided are the following: electromagnetic valves (48, 50) that selectively switch the CO2 path for the CO2 branching paths (14b, 14c); and blowers (46) that generate an air flow for the air heat source heat exchangers (22a, 22b).

Inventors:

KATAOKA MASAKI (JP)
ONO YUJI (JP)
YOKOYAMA TAKASHI (JP)
WATANABE HIROSHI (JP)

Application Number:

PCT/JP2015/053707

Publication Date:

September 03, 2015

Filing Date:

February 10, 2015

Export Citation:

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Assignee:

MAEKAWA SEISAKUSHO KK (JP)

International Classes:

F25B5/02; F24H1/00; F25B1/00; F25B41/00

Foreign References:

JP2006125769A	2006-05-18
JP2007303807A	2007-11-22
JP2011521194A	2011-07-21
JP2010281552A	2010-12-16
JP2012037203A	2012-02-23
JP2010236725A	2010-10-21
JP2014020766A	2014-02-03
JP2010012949A	2010-01-21
JP2009133543A	2009-06-18
JP2011169584A	2011-09-01

Other References: