Title:
REFRIGERANT AMOUNT DETERMINATION METHOD AND REFRIGERANT AMOUNT DETERMINATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/062485
Kind Code:
A1
Abstract:
Provided is a refrigerant amount determination method and refrigerant amount determination device capable of ascertaining an appropriate refrigerant filling amount according to the length of refrigerant connection piping in a refrigeration device having a refrigerant circuit in which a gas-liquid two-phase refrigerant flows in liquid-side refrigerant connection piping. This method determines the amount of refrigerant to be filled in a refrigeration device comprising a refrigerant circuit (10) having connected therein: a compressor (21); an outdoor heat exchanger (22) which functions as a condenser; an outdoor expansion valve (28); indoor heat exchangers (41a, 41b) which function as evaporators; liquid-side refrigerant connection piping (5) which sends, to the indoor heat exchangers (41a, 41b), refrigerant decompressed at the outdoor expansion valve (28) after passing through the outdoor heat exchanger (22); and gas-side refrigerant connection piping (6) which sends, to an intake side of the compressor (21), refrigerant that has passed through the indoor heat exchangers (41a, 41b). The amount of refrigerant to be filled in the refrigerant circuit (10) is determined such that the greater the length of the liquid-side refrigerant communication piping (5), the greater the amount of refrigerant per unit length of the liquid-side refrigerant connection piping (5).
Inventors:
YAMADA TAKURO
NAKAGAWA YUUSUKE
HONDA MASAHIRO
OKA YUUSUKE
SASAYAMA HIROKI
NAKAGAWA YUUSUKE
HONDA MASAHIRO
OKA YUUSUKE
SASAYAMA HIROKI
Application Number:
PCT/JP2017/035480
Publication Date:
April 05, 2018
Filing Date:
September 29, 2017
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
International Classes:
F25B49/02; F25B5/02
Domestic Patent References:
| WO2015063837A1 | 2015-05-07 | |||
| WO2011111114A1 | 2011-09-15 | |||
| WO2016051606A1 | 2016-04-07 | |||
| WO2016110974A1 | 2016-07-14 |
Foreign References:
| JPH1163745A | 1999-03-05 | |||
| JP2006183953A | 2006-07-13 |
Other References:
See also references of EP 3521733A4
Attorney, Agent or Firm:
SHINJYU GLOBAL IP (JP)
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