Title:
REFRIGERANT CYCLE SYSTEM AND METHOD
Document Type and Number:
WIPO Patent Application WO/2020/179825
Kind Code:
A1
Abstract:
An air conditioning device of the present invention comprises: a plurality of use-side units (3a, 3b, 3c, 3d) having a first refrigerant circuit; a heat source-side unit (2) having a second refrigerant circuit; a communication pipe group (5, 6); and relay units (4A, 4B). The relay units (4A, 4B) are disposed between the first refrigerant circuit and the second refrigerant circuit, and shut off a combustible refrigerant flowing through the communication pipe group. The plurality of use-side units include a first use-side unit group (81) which is a group of two or more use-side units. The relay unit (4A) shuts off the refrigerant flow between the first refrigerant circuit of the first use-side unit group (81) and the second refrigerant circuit. The communication pipe group includes a first communication pipe group (5ab, 5a, 5b, 6ab, 6a, 6b) connecting the first refrigerant circuit of the first use-side unit group and a first refrigerant shut-off part. The length of the first communication pipe group and/or the internal volume of the first communication pipe group is determined on the basis of information regarding the capacity of two of the use-side units of the first use-side unit group.
Inventors:
OHURA RYUUTA
KOTANI TAKUYA
KOTANI TAKUYA
Application Number:
PCT/JP2020/009202
Publication Date:
September 10, 2020
Filing Date:
March 04, 2020
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
International Classes:
F25B13/00; F24F1/32; F24F11/36; F25B1/00; F25B41/00; F25B41/04; F25B49/02
Domestic Patent References:
| WO2017203606A1 | 2017-11-30 |
Foreign References:
| JP2018077040A | 2018-05-17 | |||
| JPH0332760B2 | 1991-05-14 | |||
| JP2019113258A | 2019-07-11 | |||
| JP2019045103A | 2019-03-22 | |||
| JP2017009267A | 2017-01-12 |
Other References:
See also references of EP 3936788A4
Attorney, Agent or Firm:
SHINJYU GLOBAL IP (JP)
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