US 12,264,860 B2
Water chiller, water output adjustment method and air conditioning system
Jiang Hu, Guangdong (CN); Lifeng Shen, Guangdong (CN); Pei Qian, Guangdong (CN); and Baolin Zhou, Guangdong (CN)
Assigned to Gree Electric Appliances, Inc. of Zhuhai, Guangdong (CN)
Appl. No. 17/628,663
Filed by Gree Electric Appliances, Inc. of Zhuhai, Guangdong (CN)
PCT Filed Jul. 6, 2020, PCT No. PCT/CN2020/100378
§ 371(c)(1), (2) Date Jan. 20, 2022,
PCT Pub. No. WO2021/036510, PCT Pub. Date Mar. 4, 2021.
Claims priority of application No. 201910818683.4 (CN), filed on Aug. 30, 2019.
Prior Publication US 2022/0252315 A1, Aug. 11, 2022
Int. Cl. F25B 49/00 (2006.01); F24F 11/88 (2018.01); F24F 11/89 (2018.01); F24F 140/12 (2018.01)
CPC F25B 49/00 (2013.01) [F24F 11/88 (2018.01); F24F 11/89 (2018.01); F24F 2140/12 (2018.01); F25B 2700/19 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A water chiller, comprising: at least two cooling towers used in parallel, a water pressure balance adjustment circuit, and a main control board, wherein each of the at least two cooling towers comprises a water pressure pre-adjustment circuit, the main control board is configured to control the water pressure pre-adjustment circuit to realize real-time water output adjustment of the each of the at least two cooling towers, and control the water pressure balance adjustment circuit to achieve a water output balance adjustment among multiple cooling towers,
wherein the water pressure pre-adjustment circuit comprises: a water pressure detection module, a water pressure control module and a first comparison module, wherein the water pressure control module receives a water pressure control signal from the main control board and outputs a control signal, and the first comparison module is configured to compare the control signal output by the water pressure control module with a water pressure detection signal output by the water pressure detection module to obtain a first comparison result, and output a water output adjustment signal to a pump of the each of the at least two cooling towers according to the first comparison result.