Title:
FREEZING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2021/065914
Kind Code:
A1
Abstract:
A freezing apparatus according to the present invention sets a volume ratio between an outdoor heat exchanger and an indoor heat exchanger to a volume ratio suited for an HFO-based refrigerant, and suppresses an excess or deficiency of the refrigerant. The refrigerant is an HFO refrigerant or a mixed refrigerant containing an HFO refrigerant, and the indoor heat exchanger (41) and the outdoor heat exchanger (23) are both cross-fin-type heat exchangers or stacked heat exchangers. Moreover, if the outdoor heat exchanger (23) has a one-row configuration, a volume ratio S [%] of the outdoor heat exchanger (23) with respect to the indoor heat exchanger (41) satisfies the relational expression of 100≤S≤1.0112E-03×ρ^2-1.5836E+00×ρ+8.2472E+02, in which ρ [kg/m^3] is the average density of a saturated liquid-gas at a condensation temperature of 45ºC.
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Inventors:
IWATA IKUHIRO
KUMAKURA EIJI
YAMADA TAKURO
KAJI RYUHEI
HIROKAWA TOMOKI
KUMAKURA EIJI
YAMADA TAKURO
KAJI RYUHEI
HIROKAWA TOMOKI
Application Number:
PCT/JP2020/036922
Publication Date:
April 08, 2021
Filing Date:
September 29, 2020
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
International Classes:
F25B39/00; F24F1/0059; F25B1/00; F25B49/02
Domestic Patent References:
| WO2014118953A1 | 2014-08-07 | |||
| WO2016110974A1 | 2016-07-14 |
Foreign References:
| JP2002089978A | 2002-03-27 | |||
| JP2001132987A | 2001-05-18 | |||
| JP2012077983A | 2012-04-19 | |||
| JP2012077983A | 2012-04-19 |
Other References:
See also references of EP 4040083A4
Attorney, Agent or Firm:
SHINJYU GLOBAL IP (JP)
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