Title:
AIR CONDITIONING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2011/045977
Kind Code:
A1
Abstract:
In order to provide both a compression cycle and a natural circulation cycle and to increase dehumidifying capabilities while demonstrating heating and cooling capabilities, even when the difference between a room temperature and an outside air temperature at or below the room temperature is minimal, an air conditioning apparatus is configured such that a circular cycle, which connects, in the following order, a compressor (1), a first flow channel switching valve (2), a heat source-side heat exchanger (4), a first flow regulating valve (5), a second usage-side heat exchanger (7), a second flow regulating valve (9), and a third usage-side heat exchanger (8), is formed; a second flow channel switching valve (3) is provided, in addition to the first flow channel switching valve (2), between the first flow channel switching valve (2) and the heat source-side heat exchanger (4); and an additional first usage-side heat exchanger (6) is provided between the second flow channel switching valve (3) and the first flow regulating valve (5). As a result of this configuration, dehumidifying capabilities can be maintained during peak cooling/heating, even when the difference between the outside temperature and the room temperature is minimal, by forming a compression cycle with all of the heat exchangers and using a natural circulation cycle in conjunction with the compression cycle.
Inventors:
TAKAFUJI RYOICHI (JP)
KOMATSU TOMOHIRO (JP)
KOTANI MASANAO (JP)
KOMATSU TOMOHIRO (JP)
KOTANI MASANAO (JP)
Application Number:
PCT/JP2010/063639
Publication Date:
April 21, 2011
Filing Date:
August 11, 2010
Export Citation:
Assignee:
HITACHI LTD (JP)
TAKAFUJI RYOICHI (JP)
KOMATSU TOMOHIRO (JP)
KOTANI MASANAO (JP)
TAKAFUJI RYOICHI (JP)
KOMATSU TOMOHIRO (JP)
KOTANI MASANAO (JP)
International Classes:
F25B1/00; F24F11/02; F25B13/00
Domestic Patent References:
| WO2009087733A1 | 2009-07-16 |
Foreign References:
| JP2000074515A | 2000-03-14 | |||
| JP2000111190A | 2000-04-18 | |||
| JPS6152172U | 1986-04-08 |
Attorney, Agent or Firm:
The Patent Body Corporate TAKEWA INTERNATIONAL PATENT OFFICE (JP)
Patent business corporation Takekazu international patent firm (JP)
Patent business corporation Takekazu international patent firm (JP)
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