US 11,988,399 B2
Central air-conditioning system
Qihui Zhu, Ningbo (CN); Ang Li, Ningbo (CN); Haifeng Fu, Ningbo (CN); Yaqun Cao, Ningbo (CN); and Bingsong Yu, Ningbo (CN)
Assigned to Ningbo Fotile Kitchen Ware Co., Ltd., Ningbo (CN)
Appl. No. 17/250,532
Filed by Ningbo Fotile Kitchen Ware Co., Ltd., Ningbo (CN)
PCT Filed Aug. 2, 2019, PCT No. PCT/CN2019/098977
§ 371(c)(1), (2) Date Feb. 1, 2021,
PCT Pub. No. WO2020/025036, PCT Pub. Date Feb. 6, 2020.
Claims priority of application No. 201810867392.X (CN), filed on Aug. 2, 2018.
Prior Publication US 2021/0310669 A1, Oct. 7, 2021
Int. Cl. F24F 1/0011 (2019.01); F24F 1/0063 (2019.01); F24C 15/20 (2006.01); F24F 7/08 (2006.01); F24F 13/06 (2006.01); F24F 13/30 (2006.01); F24F 13/02 (2006.01); F24F 1/0323 (2019.01); F24F 5/00 (2006.01)
CPC F24F 1/0011 (2013.01) [F24C 15/20 (2013.01); F24C 15/2035 (2013.01); F24F 1/0063 (2019.02); F24F 1/0323 (2019.02); F24F 5/0096 (2013.01); F24F 7/08 (2013.01); F24F 13/02 (2013.01); F24F 13/0227 (2013.01); F24F 13/06 (2013.01); F24F 13/30 (2013.01); F24F 2221/18 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A central air-conditioning system installed with a plurality of kitchens and a public flue (6), the system comprising a plurality of air-conditioning assemblies (1) and a plurality of range hood assemblies (2);
each air-conditioning assembly (1) comprising a compressor (11), a first heat exchanger (12) and a second heat exchanger (13) which are connected with each other through refrigerating medium pipes (14);
each range hood assembly (2) having an air outlet (21);
wherein,
each range hood assembly (2) is disposed inside each kitchen (5), and all the range hood assemblies (2) are in communication with the public flue (6);
a third heat exchanger (3) is disposed inside the public flue (6), the second heat exchanger (13) of each air-conditioning assembly (1) is connected with the third heat exchanger (3) through a secondary refrigerant channel (4) with two ends;
the secondary refrigerant from one end of each secondary refrigerant channel (4) exchanges heat inside the corresponding second heat exchanger (13), and the secondary refrigerant from the other end of each secondary refrigerant channel (4) exchanges heat inside the third heat exchanger (3).