US 11,892,215 B2
Heat pump unit and control method thereof, control device, heat pump system, and combined supply system
Wenwei Gao, Nanjing (CN); Yufeng Jing, Nanjing (CN); and Miao Chen, Nanjing (CN)
Assigned to A. O. Smith Corporation, Milwaukee, WI (US)
Filed by A. O. Smith (China) Water Heater Co. Ltd., Nanjing (CN)
Filed on Feb. 28, 2022, as Appl. No. 17/681,895.
Claims priority of application No. 202110223517.7 (CN), filed on Mar. 1, 2021.
Prior Publication US 2022/0275987 A1, Sep. 1, 2022
Int. Cl. F25B 49/02 (2006.01); F25B 30/02 (2006.01)
CPC F25B 49/02 (2013.01) [F25B 30/02 (2013.01)] 26 Claims
OG exemplary drawing
 
1. A control method for a heat pump unit, wherein the method comprises the steps of:
determining a current ambient temperature;
acquiring a first output capability set corresponding to the heat pump unit operating at a first preset energy efficiency ratio set at the current ambient temperature;
acquiring a total demand load demanded by an indoor area having a heating demand or a cooling demand;
comparing the first output capability set and the total demand load;
determining that the total demand load is smaller than the first output capability set; and
causing the heat pump unit to operate in accordance with the first output capability set in response to determining that the total demand load is smaller than the first output capability set.