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1. (WO2017185514) COOLING AND HEATING AIR CONDITIONER, COOLING-ONLY AIR CONDITIONER, AND CONTROL METHOD FOR AIR CONDITIONER

Pub. No.:    WO/2017/185514    International Application No.:    PCT/CN2016/087933
Publication Date: Fri Nov 03 00:59:59 CET 2017 International Filing Date: Fri Jul 01 01:59:59 CEST 2016
IPC: F25B 1/10
F25B 13/00
F25B 41/06
F25B 49/02
F25B 43/00
Applicants: GD MIDEA AIR-CONDITIONING EQUIPMENT CO., LTD.
广东美的制冷设备有限公司
MIDEA GROUP CO., LTD.
美的集团股份有限公司
Inventors: YANG, Yaxin
杨亚新
LI, Jinbo
李金波
LIU, Tuanshun
刘湍顺
QI, Wenduan
戚文端
CHEN, Mingyu
陈明瑜
REN, Chao
任超
SUN, Xing
孙兴
WEI, Hongtao
魏洪涛
Title: COOLING AND HEATING AIR CONDITIONER, COOLING-ONLY AIR CONDITIONER, AND CONTROL METHOD FOR AIR CONDITIONER
Abstract:
A cooling and heating air conditioner (100), cooling-only air conditioner (100), and control method for an air conditioner (100). The cooling and heating air conditioner (100) comprises: a two-cylinder compressor (1), a reversing assembly (2), an outdoor heat exchanger (3), an indoor heat exchanger (4), a vapor-liquid separator (5), and a refrigerant radiator (9). The two-cylinder compressor (1) has an air discharge volume ratio of a second cylinder (12) to a first cylinder (11) having a value within the range of 1-10%. The vapor-liquid separator (5) comprises a gas outlet (m), a first interface (f), and a second interface (g). The gas outlet (m) is connected to the second cylinder (12), a first throttling element (6) is connected in series between the first interface (f) and the outdoor heat exchanger (3), and a second throttling element (7) is connected in series between the second interface (g) and the indoor heat exchanger (4). The refrigerant radiator (9) used for heat dissipation of electrical control elements is connected in series between the first throttling element (6) and the first interface (f); alternatively, the refrigerant radiator (9) is connected in series between the second throttling element (7) and the second interface (g). By means of the above arrangement, the present invention effectively improves energy efficiency of an air conditioner, facilitates energy saving and emission reduction, improves heat exchange efficiency, and provides effective cooling to electrical control elements.