Title:
COOLANT FILLING METHOD IN A REFRIGERATION DEVICE USING CARBON DIOXIDE AS COOLANT
Document Type and Number:
WIPO Patent Application WO/2008/018480
Kind Code:
A1
Abstract:
Provided is a coolant filling method in a refrigeration device using carbon dioxide as
a coolant, which method can reduce the time required for coolant filling and the
time required until operation is enabled after the coolant filling. The coolant filling
method in an air conditioner (1) using carbon dioxide as a coolant includes: a
first coolant filling step and a second coolant filling step. The first coolant filling
step fills a coolant in a gaseous state into a coolant filling object including coolant
communication pipes (6, 7) until the pressure of the coolant filling object increases
to a predetermined pressure from the filling start. The second coolant filling
step fills a coolant in a liquid state into the coolant filling object until the
coolant amount filled in the coolant filling object reaches a predetermined
amount after the first coolant filling step.
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Inventors:
MATSUOKA HIROMUNE (JP)
KURIHARA TOSHIYUKI (JP)
KURIHARA TOSHIYUKI (JP)
Application Number:
PCT/JP2007/065479
Publication Date:
February 14, 2008
Filing Date:
August 08, 2007
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
MATSUOKA HIROMUNE (JP)
KURIHARA TOSHIYUKI (JP)
MATSUOKA HIROMUNE (JP)
KURIHARA TOSHIYUKI (JP)
International Classes:
F25B45/00; F25B1/00
Foreign References:
JP2001074342A | 2001-03-23 | |||
JPS5255015A | 1977-05-06 | |||
JP2003120897A | 2003-04-23 | |||
JP3012260U | 1995-06-13 |
Other References:
See also references of EP 2051029A4
Attorney, Agent or Firm:
ONO, Yukio et al. (South Forest Bldg.1-4-19, Minamimori-machi, Kita-ku,Osaka-sh, Osaka 54, JP)
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