Title:
AIR CONDITIONING SYSTEM
Document Type and Number:
Japanese Patent JP2023007076
Kind Code:
A
Abstract:
To enable heat recovery by using an auxiliary heat exchanger during a defrosting operation in an air conditioning system including the heat recovery auxiliary heat exchanger.SOLUTION: An air conditioning system 100 includes: an outdoor unit 110 having a heat source side refrigerant circuit RC1; a plurality of indoor units 120 each having an indoor heat exchanger 52; switching units 70 each having an intermediate refrigerant circuit RC3; and a heat recovery unit 130 having an auxiliary refrigerant circuit RC2 including an air supply side auxiliary heat exchanger 131 and an air exhaust side auxiliary heat exchanger 132. The heat source side refrigerant circuit RC1 and the intermediate refrigerant circuit RC3 are connected by a first communication pipe 11 in which a liquid refrigerant flows, a second communication pipe 12 in which a high-pressure gas refrigerant flows and a third communication pipe 13 in which a low-pressure gas refrigerant flows. The auxiliary refrigerant circuit RC2 is connected to the first communication pipe 11 and the second communication pipe 12 between the heat source side refrigerant circuit RC1 and the intermediate refrigerant circuit RC3, and includes a bypass pipe 16 connecting auxiliary refrigerant piping 135 and the first communication pipe 11.SELECTED DRAWING: Figure 2
Inventors:
FUKUYAMA YUTA
MATSUOKA SHINYA
NAKANISHI TAKAYA
MATSUOKA SHINYA
NAKANISHI TAKAYA
Application Number:
JP2021110091A
Publication Date:
January 18, 2023
Filing Date:
July 01, 2021
Export Citation:
Assignee:
DAIKIN IND LTD
International Classes:
F25B29/00; F24F7/08; F24F11/41; F25B1/00; F25B47/02
Attorney, Agent or Firm:
Patent Attorney Corporation Suncrest International Patent Office