US 9,810,463 B2
Integrated air conditioning system and control device thereof
Kenya Murakami, Hachioji (JP); Masaki Takahashi, Hachioji (JP); Taiji Mori, Yokohama (JP); Shunsuke Ohga, Chiba (JP); Shuhei Shibata, Hino (JP); and Yuichiro Minegishi, Hino (JP)
Assigned to FUJI ELECTRIC CO., LTD., Kawasaki-Shi (JP)
Appl. No. 14/372,393
Filed by FUJI ELECTRIC CO., LTD., Kawasaki-shi, Kanagawa (JP)
PCT Filed Feb. 21, 2013, PCT No. PCT/JP2013/054394
§ 371(c)(1), (2) Date Jul. 15, 2014,
PCT Pub. No. WO2013/125650, PCT Pub. Date Aug. 29, 2013.
Claims priority of application No. 2012-036854 (JP), filed on Feb. 22, 2012.
Prior Publication US 2015/0000317 A1, Jan. 1, 2015
Int. Cl. F25D 21/06 (2006.01); G05D 23/32 (2006.01); F25B 27/00 (2006.01); F25D 21/14 (2006.01); G01M 1/38 (2006.01); F25B 49/02 (2006.01); F24F 12/00 (2006.01); H05K 7/20 (2006.01); F25B 1/00 (2006.01); F25D 17/06 (2006.01); F24F 11/00 (2006.01)
CPC F25B 49/02 (2013.01) [F24F 12/002 (2013.01); F25B 1/005 (2013.01); F25D 17/06 (2013.01); H05K 7/20836 (2013.01); F24F 2011/0006 (2013.01); F25B 2600/00 (2013.01); Y02B 30/563 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An integrated air conditioning system, comprising:
an indirect outdoor air cooler having a first heat exchanger for passing through indoor air as warm air, a second heat exchanger for passing through outdoor air, and piping and a pump for circulating a fluid through the first heat exchanger and the second heat exchanger;
an air conditioner operated on a basis of a compression refrigeration cycle and having an evaporator, a compressor, and a condenser, for passing the indoor air, after having passed through the first heat exchanger, to convert to cold air;
a common fan for passing the outdoor air through the second heat exchanger and the condenser; and
a control device,
wherein the control device sets an operation mode from among a first mode for performing an individual operation of the indirect outdoor air cooler, a second mode for performing an individual operation of the air conditioner, or a third mode for performing a combined operation of the air conditioner and the indirect outdoor air cooler, and executes operation control of the air conditioner and/or the indirect outdoor air cooler according to the operation mode,
the control device has a mode determining device to determine the operation mode based on a temperature of the cold air, a temperature of the warm air, and a temperature of the outdoor air,
the control device has a first computing device for calculating a maximum cooling capacity of the indirect outdoor air cooler based on a difference between the temperature of the warm air and the temperature of the outdoor air, and
the mode determining device determines the operation mode using the maximum cooling capacity.