公开(公告)号：US20220228772A1

公开(公告)日：2022-07-21

申请号：US17439958

申请日：2019-05-10

申请人： Mitsubishi Electric Corporation

发明人： Kenta MURATA ,  Keisuke TAKAYAMA ,  Yusuke SATO ,  Hiroki HIROSAKI ,  Toru KOIDE

IPC分类号： F24H4/04 ,  F24H9/20

摘要： A heat storage system includes a compressor that compresses refrigerant; a heat storage tank that stores a heating medium; heat exchange means provided outside the heat storage tank for heating the heating medium using heat of the refrigerant compressed by the compressor; a heat accumulating circuit including a feed path that feeds the heating medium flowing out of the heat storage tank to the heat exchange means, a return path that returns the heating medium heated by the heat exchange means into the heat storage tank, and a pump that circulates the heating medium; and control means capable of executing an initial operation that controls an operating frequency of the compressor at the beginning of a heat accumulating operation in which the heating medium heated by the heat exchange means is accumulated in the heat storage tank. The initial operation includes a first operation that maintains the operating frequency at a first frequency and, after the first operation, a second operation that maintains the operating frequency at a second frequency higher than the first frequency.